The two quantities in this module for which we will develop unit factors to do dimensional analysis with chemical substances are mass and volume.
What is chemical substances?Chemical substances are any material made up of atoms and molecules that have distinct chemical properties. They include elements, compounds, and mixtures of elements and compounds. Chemical substances are the building blocks of all matter, from the atoms and molecules that make up the smallest particles to the complex structures of living organisms. Chemical substances can exist in various states, such as solid, liquid, and gas, and can react with other substances to form new compounds or break down into simpler substances. Chemical substances are important in many areas of science, including chemistry, biology, geology, and physics.
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The following questions refer to the hypothetical reaction A + B products. The kinetics data given can be analyzed to answer the questions. [A]0 [B]0 Rate of decrease (mol/L) (mol/L) of [A] (M/s) 5.0 5.0 X 10.0 5.0 2X 5.0 10.0 2X Time (s) [B] (mol/L) 10.0 100 20.0 100 30.0 100 62. The rate law for the reaction is Rate = k[A]x[B]y. What are the values of x and y? A) x = 0 y = 1 B) x = 1 y = 0 C) x = 1 y = 1 D) x = 2 y = 1 E) x = 1 y = 2
To determine the rate law for the reaction A + B -> products, we need to examine how the rate of the reaction changes as the concentrations of A and B change. From the given data, we can see that when the concentration of A is doubled, the rate of the reaction also doubles. Similarly, when the concentration of B is doubled, the rate of the reaction also doubles. This indicates that the rate of the reaction is directly proportional to the concentrations of both A and B.
Based on this information, the rate law for the reaction can be expressed as Rate = k[A]*[B], where k is the rate constant. The exponents x and y in the rate law represent the order of the reaction with respect to A and B, respectively. Since the rate of the reaction is directly proportional to the concentrations of both A and B, the exponents x and y would both be equal to 1.
Therefore, the values of x and y are C) x = 1 and y = 1.
Identify the following chemical reaction: 8 Cu + S8 → 8 CuS
Combination reaction: 8 Cu + S8 8 CuS in terms of chemistry. There are multiple reactants and multiple products.
Combination reaction: what is it?Combination reactions occur when two or more substances combine to form a single new substance. Composite processes are also referred to as synthetic reactions. The typical structure of an active components is A+BAB. A combination reaction occurs when two components combine to form a compound.
What qualities make into a combination reaction?A combination synthesis can involve any number of different reactants. A non-metal and a metal combinations reaction every time leads to an electrolytic process. Combination conformational changes fall into one of three categories. In particular, they consist of two elements combined, two compounds combined, and one element combined with one compound.
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The molar mass of bismuth (\ce{Bi}BiB, i) is \pu{208. 98 g/mol}208. 98 g/mol208, point, 98, space, g, slash, m, o, l. Calculate the mass in grams of a sample of \ce{Bi}BiB, i containing \pu{7. 35x10^23}7. 35×10 23 7, point, 35, times, 10, start superscript, 23, end superscript atoms
The mass in grams of a sample of Bi with 7.35 1023 atoms should be 255 grams.
What does molar mass in chemistry refer to?A substance's mass is measured in grams per mole, or molar mass. The molar mass of a substance can be determined, as demonstrated in this video, by adding the molar masses of the substance's constituent atoms. The substance's molar mass can then be used to determine the number of moles in the substance and converted to mass.
The molar mass of Bi is 208.98 g/mol.
1 mole Bi = 208.98 g/mol = 6.023×10²³ no of atoms
So, the mass in grams should be
mass = ( 208.98 g/mol ×7.35 × 10²³) ÷ (6.023×10²³)
mass = 255 grams.
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Safety standards require a pool to add 333 chlorine tablets to every 2{,}0002,0002, comma, 000 liters of water. Today, the lifeguards at Park Pool added 888 chlorine tablets to their pool's 10{,}00010,00010, comma, 000 liters of water. How does Park Pool's chlorine compare to the safety standards
Compared to safety standards, that would be too little chlorine:
10,000 gallons is five times as much water as 2,000.
Therefore, Park's pool needs five times as much chlorine as is required for 2,000 gallons to meet safety regulations.
5 times 3 pills of chlorine equals 15 tablets. For Mark to meet safety standards, 15 chlorine tablets would be required. Use one three-inch tablet for every 10,000 gallons of pool water rather than stuffing your chlorinator or floater to the brim with tablets. This quantity of pills should be sufficient to maintain a good chlorine level if you shock your water once a week.
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Solid iron (III) hydroxide decomposes to produce iron (III) oxide and water vapor. If 0. 75 L of water vapor are isolated in the labat STP what was the percent yield of water vapor if you startedthe reaction with 8. 0 grams of iron (III) hydroxide?
The percent yield of water vapor is 1000%, which is not possible and this is an indication that the experiment has not been done accurately or there is an error in the data, or the reaction is not a complete reaction.
To calculate the percent yield of a reaction, you need to know the theoretical yield (the maximum amount of product that could be produced based on the balanced equation) and the actual yield (the amount of product that was actually produced in the lab). To find the theoretical yield, you can use the balanced equation for the reaction and the amount of reactant that was used.
The balanced equation for the decomposition of iron(III) hydroxide is:
Fe(OH)3 --> Fe2O3 + H2O
We are given that 8.0 g of Fe(OH)3 was used in the reaction.
From the balanced equation, we can see that for every 1 mole of Fe(OH)3 that reacts, 1 mole of H2O is produced.
The molar mass of Fe(OH)3 is 106 g/mol
so the amount of moles of Fe(OH)3 is 8.0 g / 106 g/mol = 0.075 moles
The theoretical yield of H2O would then be 0.075 moles.
We also know that 0.75 L of H2O is isolated at STP, which is equivalent to 0.75 moles of H2O.
The percent yield can be calculated by dividing the actual yield by the theoretical yield, and multiplying by 100%.
% yield = (actual yield / theoretical yield) * 100%
% yield = (0.75 moles / 0.075 moles) * 100%
% yield = 10 * 100%
% yield = 1000%
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Why are incandescent light bulbs considered to be lower efficiency than LED bulbs?
#1: A greater percentage of the energy output of the incandescent bulb goes toward heat.
#2: A greater amount of energy is required for the same light output from the LED bulb.
#3: A smaller amount of energy is wasted by the incandescent bulb.
#4: A smaller percentage of the energy output of the LED bulb goes toward light.
A smaller amount of energy is wasted by the incandescent bulb.
Why are incandescent light bulbs less efficient?Because so much energy (90%) is used to produce heat instead of light, incandescent lights are the least efficient of all current lighting options.A typical incandescent source emits around 2% of its energy as usable visible light and the rest 98% as waste heat. Incandescent bulbs have a high likelihood of burning out regularly and need to be replaced annually.Incandescent bulbs are inefficient since they only produce 10% of light and 90% of heat. Additionally, incandescent lights don't last as long as CFLs and LEDs do. A 12-watt LED bulb lasts 25,000 hours, compared to 1,000 hours for an incandescent bulb, 10,000 hours for a CFL, and 15 hours for a CFL.To learn more about incandescent light bulbs refers to:
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Suppose that 20 mL of 2.50 x 10^-2 M aqueous H 2 SO 4 is required to neutralize 10.0 mL of an aqueous solution of KOH. What is the molarity of the KOH solution
The molarity of KOH solution will be 0.75 M.
The amount of moles of solute per liter of solution is known as molarity (M). Molarity is defined as moles of solute per liter of solution. To ascertain the concentration of an identified analyte, titration is a typical laboratory technique for quantitative chemical analysis. A standard solution with a known concentration and volume is prepared as the reagent, also known as the titrant or titrator.
The balanced equation is
[tex]H_{2} SO_{4}[/tex]+ 2KOH = [tex]2H_{2} O[/tex]+ [tex]K_{2} SO_{4}[/tex]
2.50 x [tex]10^{-2}[/tex] M= [tex]\frac{x}{0.2 L}[/tex]
So, 0.75 M KOH.
So, The molarity of KOH solution will be 0.75 M.
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What mass of HCI is needed to
generate 45.2 g of AICI3?
2AI + 6HCI → 2AICI3 + 3H2
AICI3: 133.33 g/mol
HCI: 36.46 g/mol
[?] g AlCl3
the data in the table show the amount of 500 g sample of sodium-24 over time. make a graph of the data (remember to label all axes and title the graph)
The amount of sodium-24 decreases to approximately 125 g.
What is sodium?Sodium is a chemical element with the symbol Na on the periodic table. It is a soft, silvery-white, highly reactive metal and is a member of the alkali metal group of chemical elements.
The graph below shows the amount of 500 g sample of sodium-24 over time. The x-axis of the graph represents time (in hours), and the y-axis represents the amount of sodium-24 (in grams). The title of the graph is "Amount of sodium-24 in 500 g Sample Over Time".
The graph shows that the amount of sodium-24 in the sample decreases over time. After 24 hours, the amount of sodium-24 in the sample decreases to approximately 375 g. After 48 hours, the amount of sodium-24 decreases to approximately 250 g. After 72 hours, the amount of sodium-24 decreases to approximately 125 g.
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Which freezes faster, hot water or cold water?
Answer: Hot water freezes faster.
Explanation: It is because of the Mpemba effect taking place, and even though it seems impossible, it could have less dissolved gas in it, or even take up less mass because of this.
Indicate whether F3C−C≡N is linear, planar, or neither.
O linear
O planar
O neither linear nor planar
Left C would be neither linear and neither planar since, in accordance with the preceding definition, it has a tetrahedral form.
Which is better, planar or non-planar?Since no links cross one another, graph A is planar. Because so many connections overlap, graph B is not plane. Additionally, graph B's linkages cannot be rearranged in a way that makes it planar.
How does one recognize planar?A compound is said to be planar if every atom inside it is located on the same plane. - Take the organic compound, for example. When the carbon atoms of an organic molecule lay within a single plane, the complex is referred to as a planar compound.
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How many moles of CH3CH2OH are contained in 548 mL of 0.0788 M CH3CH2OH solution?
0.0432 moles of CH3CH2OH are contained in 548 mL of a 0.0788 M CH3CH2OH solution.
what is molarity?Molarity is a unit of concentration that expresses the amount of solute in a solution in terms of moles of solute per liter of solvent. It is represented by the symbol M. It is calculated by dividing the number of moles of solute by the number of liters of solvent in the solution. For example, a 0.5 M solution of NaCl would contain 0.5 moles of NaCl dissolved in every liter of water.
To determine the number of moles of a solute in a solution, you can use the formula: moles = (concentration (M) x liters of solution).
In this case, the concentration of the CH3CH2OH solution is given as 0.0788 M and the volume is given as 548 mL. Converting mL to L by multiplying it by 10^-3, we get 0.548 L. By applying the formula, moles = 0.0788 M x 0.548 L = 0.0432 moles of CH3CH2OH.
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If you see an uncharacterized container that has a white crystalline residue on the outside, what should you do
What is the total number of moles contained in 115 grams
of C₂H5OH?
A. 1.00
B. 1.50
C. 2.50
D. 3.00
The total number of moles contained in 115 grams of C₂H5OH is 2.50 moles .
What is the term "mole"?The term "mole" refers to the quantity of a substance that has the same amount of subatomic particles (ions, molecules, or atoms) as there are carbon atoms.
Atomic weight of carbon(C)= 12 gm
Atomic weight of Hydrogen (H)=1 gm
Atomic weight of oxygen (o)=16 gm
∴Molecula weight of C2H5OH =(12×2 + 1×6 + 16×1) gm
24 + 6 + 16 gm = 46 gm
∴ 46 gm of C2H5OH contains 1 mole
1 gm of C2H5OH contain = 1/46 moles
115 gm of C2H5OH contains = 115×1/46 moles
⇒2.5 moles
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Which of the following is the net ionic equation for the reaction between aqueous sodium fluoride and hydrochloric acid? (A) NaF (aq) + HCI (aq) → Naci (aq) + HF (aq) (B) Na+ (aq) + F- (aq) + H+ (aq) + CI+ (aq) → Na+ (aq) + Cl - (aq) + HF (aq) (C) Na+ (aq) + CI+ (aq) → NaCl (aq) (D) F- (aq) + H+ (aq) → HF (aq)
The net ionic equation for the reaction between aqueous sodium fluoride and hydrochloric acid is B. Na+ (aq) + F- (aq) + H+ (aq) + Cl- (aq) → Na+ (aq) + Cl- (aq) + HF (aq)
This is the net ionic equation for the reaction between aqueous sodium fluoride and hydrochloric acid. The balanced equation for this reaction is NaF (aq) + HCl (aq) → NaCl (aq) +HF (aq).
The net ionic equation is derived by canceling out the spectator ions, which are ions that don't participate in the chemical reaction. In this case, Na+ and Cl- are spectator ions, which means that they don't participate in the reaction and are present in the same form on both sides of the equation. Therefore, they are cancelled out, leaving the net ionic equation Na+ (aq) + F- (aq) + H+ (aq) + Cl- (aq) → Na+ (aq) + Cl- (aq) + HF (aq).
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a sample of n2o gas has a density of 3.10 g/l at 298 k.what must be the pressure of the gas (in mmhg)?
To determine the pressure of a gas, we need to use the ideal gas law, which states that PV = nRT, where P is pressure, V is volume, n is the number of moles, R is the ideal gas constant, and T is the temperature in Kelvin.
We can re-arrange the ideal gas law to solve for pressure:
P = (nRT) / V
We are given that the density of the gas is 3.10 g/L, which we can use to calculate the volume of the gas. Density is defined as mass/volume, so we can rearrange the equation to find volume:
V = mass/density
We know the density is 3.10 g/L, and the mass is n * molar mass of N2O.
Molar mass of N2O = (14.01 + 2 * 16.00) g/mol = 44.01 g/mol
The volume of the gas is:
V = mass / density = n * molar mass of N2O / 3.10 g/L
Now we have all the information needed to use the ideal gas law to determine the pressure of the gas.
We are given that the temperature of the gas is 298K.
We can use the ideal gas constant R = 0.0821 Latm/molK
Plugging in the known values:
P = (nRT) / V = (n * 0.0821 Latm/molK * 298K) / (n * molar mass of N2O / 3.10 g/L)
P = (0.0821 * 298) / (44.01 / 3.10) atm
To convert the pressure in atm to mmHg, we need to multiply the pressure by 760 (1 atm = 760 mmHg)
P = (0.0821 * 298) / (44.01 / 3.10) * 760 mmHg
The pressure of the N2O gas is approximately 739.07 mmHg at 298K and density of 3.10 g/L.
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Which of the following is incorrect:
A. Protons contribute to the mass of the atom
B. Electrons have a negative charge
c. Neutrons are found in the nucleus of the atom
d. Electrons, neutrons and protons all have the same mass
Answer: D
Explanation:
electrons have no mass
What element has 4 protons 6 neutrons and 4 electrons
Answer:
Beryllium is the element that is atomic number 4 on the periodic table.
How many grams do 5.6 × 1026 atoms of helium weigh?
One mole of Helium contains 6.02 × 10²³ atoms. Mass of one mole is 4 g. Then, He containing 5.6 × 10²⁶ atoms weighs 3720.9 g.
What is Avogadro number?Any substance containing 6.02 × 10²³ atoms is called one mole of that substance. This number is called Avogadro number. Thus, one mole of every element contains Avogadro number of atoms.
Helium is second element in periodic table. Atomic mass of helium that is mass of one mole = 4 g
4 g contains 6.02 × 10²³ atoms. Then weight of He containing 5.6 × 10²⁶ atoms is calculated as follows:
no. of moles = 5.6 × 10²⁶/ 6.02 × 10²³ = 930.2
mass of 930.2 moles = 930.2 × 4 =3720.9 g
Therefore, the mass of He containing 5.6 × 10²⁶ atoms is 3720.9 g.
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Tropospheric ozone is rapidly consumed in many reactions, including:
SO3(g) + NO(g) --------> NO2(g) + O2(g)
Use the following data to calculate the instantaneous rate of the preceding reaction at t = 0. 000 s and t = 0. 0520 s. Express your answers to three significant figures.
Time (s) [NO] (M)0. 000 2. 00 x 10^-80. 0110 1. 80 x 10^-80. 0270 1. 60 x 10^-80. 0520 1. 40 x 10^-80. 1020 1. 20 x 10^-8
Part 1:
For t = 0. 000 s: ________ M/sPart 2:For t = 0. 052 s: _________ M/s
Part-1 The instantaneous rate at 0.000s is 1.8 ×10⁻⁷m/s.
Part-2 The instantaneous rate at 0.0s is 5.3×10⁻⁸m/s.
What do the terms average rate and instantaneous rate mean?The concentration change over a chosen time period is the average rate. When you take the measurements makes a difference. The instantaneous rate is the rate that exists at a specific time. The solution is found at that point by determining the slope of the tangent to the concentration vs. time curve.
Given chemical reaction,
SO₃(g) + NO(g) --------> NO₂(g) + O₂(g)
t = 0. 000s
instantaneous rate = 1.38×10⁻⁸ - 2.0×10⁻⁸/0.011 - 0.000
instantaneous rate = 1.8 ×10⁻⁷m/s
Therefore the instantaneous rate at 0.000s is 1.8 ×10⁻⁷m/s.
for t = 0.052s,
instantaneous rate = 1.2×10⁻⁸ - 1.6×10⁻⁸/0.102 - 0.027
instantaneous rate = 5.3×10⁻⁸m/s.
Therefore the instantaneous rate at 0.0s is 5.3×10⁻⁸m/s.
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In the molecules below, areas that have a partial negative charge are pink and areas that have a partial positive charge are blue.
The attractive force between these two molecules has most likely been produced by
covalent bonds.
dipole-dipole interactions.
dipole-induced dipole interactions.
London dispersion forces.
The attractive force (intermolecular force) between these two molecules has most likely been produced by dipole-dipole interactions.
The correct option is B.
What are intermolecular forces?Intermolecular forces are forces of attraction or repulsion that act between atoms and other kinds of nearby particles, such as atoms or ions, to mediate interactions between molecules.
Some intermolecular forces are:
covalent bonds.dipole-dipole interactions.dipole-induced dipole interactions.London dispersion forces.Considering the given molecules in the diagram:
Each molecule is made up of two distinct components, and as a result, each molecule has a constant bond dipole.
The attractive forces are dipole-dipole attractions because the dipoles do not cancel. The dipole-dipole attractions are substantially stronger than the dipole-induced dipole and London dispersion forces.
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A 50.0 mLmL sample of 0.200 MM sodium hydroxide is titrated with 0.200 MM nitric acid. Calculate the pHpH in the titration after the addition of 60.0 mLmL of 0.200 MHNO3MHNO3 .
A rough estimate of the excess pH of the solution is 1.74.
The answer to the question is that the concentration of NaOH is 0.2 M.
The question also states that the concentration of HNO3 is equal to that of NaOH, which is 0.2 M.
The volumes of sodium hydroxide and nitric acid that are provided to us are 50 mL and 60 mL, respectively. This implies that adding the two will result in the final volume.
= 50 plus 60 equals 110, or 0.11 liters
We know that there is a neutralizing reaction between NaOH and HNO3 based on theory. Then, as a means of answering the question, we record the aforementioned equation.
OH⁻ + H⁺ ---> H₂O
Finally, we apply logarithm to get our final answer
pH = - log [ H⁺ ]
pH = - log [0.01818]
pH = 1.74
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Determine the number of atoms of each element in the following: 4Fe2O3
Answer:
hi, I haven't done this in a while, but I think this is it!
Explanation:
20
8 Iron Atoms
12 Oxygen Atoms
HCl(aq)+NaOH(aq)→NaCl(aq)+H2O(l)
A student had two dilute, colorless solutions, HCl(aq) and NaOH(aq), which were at the same temperature. The student combined the solutions, and the reaction represented above occurred. Which of the following results would be evidence that a chemical reaction took place?
'The temperature of the reaction mixture increases' would be evidence that a chemical reaction took place.
What is a dilute solution?
A dilute solution is a solution that contains fewer solute particles than a more concentrated solution. Dilute solutions are generally less concentrated than more concentrated solutions and are often made by adding more solvent to the solution.
When a chemical reaction takes place, energy is released in the form of heat. This increase in temperature is basically known as an exothermic reaction. An increase in temperature is a sign that a chemical reaction has taken place, as the reaction mixture is absorbing the energy released from the reaction.
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Matter with a ___ luster reflects little light from its surface.
Fill the blank
Matter with a Dull luster reflects little light from its surface.
Minerals with dull luster reflect very little light.
What is Luster?The term "luster" refers to the light reflection from a mineral's surface. To define lustre, mineralogists use specific terminology. The mineral's metallic or non-metallic nature can be used to categorise lustre in a straightforward manner. Metallic lustre can be seen in opaque, sparkling minerals like pyrite. Quartz is one example of a mineral with a non-metallic shine.
Metallic lustre denotes a sheen akin to polished metal. Clean, polished chunks of chrome, steel, titanium, copper, and brass, as well as many other minerals, all have a metallic shine. The most prevalent nonmetallic lustre is glassy, which denotes that the mineral's surface reflects light like glass. The most typical sort of mineral, feldspars, must have a pearly shine to be recognised. Similar to how pearls reflect light, pearly lustre describes a delicate iridescence or colour play in the reflected light. To reflect light with a silky sheen is to be silky. The sheen of hardened bacon fat is comparable to that of grease.Light is reflected relatively little by minerals with a poor sheen. It takes a little practise to spot lustre. Keep in mind to separate shine from colour.What is Dull Luster?Due to their coarse granulations, which scatter light in all directions and resemble a Lambertian reflector, dull (or earthy) minerals have little to no shine. Kaolinite is one Example.
Different types of non-metallic lusterLuster Appearance
Adamantine Sparkly
Earthy Dull, clay-like
Pearly Pearl-like
Resinous Like resins, such as tree sap
Silky Soft-looking with long fibers
Vitreous Glassy
What are Minerals?Minerals are inorganic solids that exist in nature and have a distinct chemical composition and crystal lattice structure. Even though thousands of minerals in the earth have been found, only ten minerals—plagioclase, quartz, orthoclase, amphibole, pyroxene, olivine, calcite, biotite, garnet, and clay—make up the majority of the crust's volume.
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A bank robber i driving north on Catchem Lane at 90 mph to avoid be arreted. Peed
velocity
acceleration
The robber is driving at a constant velocity of 90 mph and is not accelerating/decelerating, which means their acceleration is 0 mph/sec.
What is velocity?A vector quantity that has magnitude and direction is velocity. In time, it is the rate at which the displacement changes. You can calculate speed using the formula speed = distance/time. This is a way of measuring how fast something is moving in a particular direction. Acceleration, or the rate at which an object's velocity changes, is closely related to velocity. As a vector quantity, velocity has both direction and magnitude. To maintain constant velocity, the object must be moving in the same direction at a constant velocity.
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The complete question is as follows:
A bank robber is driving north on Catchem Lane at 90 mph to avoid be arrested. Calculate:
Speed
Velocity
Acceleration
How many grams of Pb would be required to make 119 g H2O? Pb+PbO2+2H2SO4=2PbSO4+2H2O. Pb: 207.2 g/mol. H20: 18.o2 g/mol
The amount, in grams of Pb that would be required to make 119 g of [tex]H_2O[/tex] will be 685.17 grams.
Stoichiometric problemThe balanced equation of the reaction would be as follows:
[tex]Pb+PbO_2+2H_2SO_4--- > 2PbSO_4+2H_2O[/tex]
The mole ratio of Pb to [tex]H_2O[/tex] is 1:2.
Recall that, mole = mass/molar mass.
Molar mass of [tex]H_2O[/tex] = 18 g/mol
Mole of 119 g of [tex]H_2O[/tex] = 119/18 = 6.61 mol
From the established mole ratio, the equivalent mole of Pb that would be required will be:
1/2 x 6.61 = 3.31 mol
Mass = mole x molar mass
The molar mass of Pb is 207 g/mol
Mass of 3.31 mol Pb = 3.31 x 207
= 685.17 grams
In other words, the amount of Pb that would be required to make 119 g of [tex]H_2O[/tex] according to the illustrated reaction will be 685.17 grams.
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The "Great Ocean Conveyor Belt" is an ocean current that helps move heat energy around the earth and keeps our atmosphere more liveable. This ocean current is caused by differences in water density. These differences are caused mainly by
A.) Chemical content and surface winds
B.) Salinity and surface winds
C.) Water temperatures and salinity
D.) Water temperatures and geographical formations
I NEED ANSWER ASAP
The ocean current is caused by differences in water density. The difference in the density of water is mainly caused by the temperature and salinity of water.
What is density?Density of a substance is the measure of its mass per unit volume. It describes how closely its particles are packed within a given volume. Density of a substance is dependent on the temperature and pressure also.
The density of water is affected by the temperature and salinity. Water has its maximum density at 4 ° C. The more saline is water, more will be the density. Because, more ions or salts makes water denser.
The density vary with variations in temperature and salinity. This variation causes water currents from the denser areas to the less dense areas. Ocean currents are also affected by the gravity.
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Will someone please help me with these physics questions.
Now assume that all of the potential energy went into kinetic right as it is about to hit the bottom. What would be the value for the kinetic energy? a. less
b. same
c. more
d. not information
The potential energy will go into kinetic right as it is about to hit the bottom. Then, the value will be the b) same for the kinetic energy.
When an object falls, its potential energy decreases, and its kinetic energy increases. A decrease in the potential energy is exactly the same as an increase in the kinetic energy. According to the law of conservation of energy, just before the lamp stops, the potential energy at the top of the lamp and the kinetic energy at the bottom must be equal. At the foot of the hill, the potential energy is zero and the final energy is all kinetic energy. We can equate these two values according to the law of conservation of energy. Adding the kinetic energy and the potential energy gives a constant (KE+PE=constant).
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anybody know the answer for these
KI - Ionic compound, KCl - Ionic compound,
C₆H₁₂O₆ - Covalent compound, KNO₃ - Ionic compound,
C₆H₄Cl₂ - Covalent compound, C₆H₅COOH - Covalent compound
CH₃COOH - Covalent compound, Parafin wax - Covalent
HCl - Covalent compound
What are ionic and covalent compounds?Ionic compounds can be classified as compounds formed between cation ions and an anion. A cation can be described as an electropositive ion and has the tendency to donate valence electrons. Similarly, anions are electronegative ions and have a tendency to accept electrons.
In an ionic compound, an ionic bond contains the complete transfer of electrons, therefore, there exists an electrostatic force of attraction that forms a strong bond.
In a covalent compound, the covalent bond exhibits the mutual sharing of electrons. Shared pairs of electrons are hard to give away as nuclei of two chemical elements together share the electrons and produce a bond stronger.
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