Answer:
The answer is c hope it is right if it is rong please tell me tho :)
A 500.0 ml. Glass filled with air is placed into water up-side-down while at 7.0°C. The water is heated to 77°C. How much air bubbles out from under the glass?
The answer is 125 ml air bubbles come out from under the glass
What is Charle's Law ?Charles's Law describes the directly proportional relationship between the volume and temperature (in Kelvin) of a fixed amount of gas, when the pressure is held constant.
V∝T
or express from two volume/temperature points:
[tex]\rm\dfrac{V_{1}}{T_{1}} =\dfrac{V_{2}}{T_{2}}[/tex]
This equation can be used to solve for initial or final value of volume or temperature
under the given condition that pressure and the number of mole of the gas stay the same.
It is given that
V₁ = 500 ml
T₁= 7 + 273 = 280 K
T₂ = 77+273 = 350 K
V₂= ?
Substituting the values in the above in the above equation
[tex]\rm\dfrac{500}{280}} =\dfrac{V_{2}}{350}[/tex]
V₂ = 625 ML
The volume of the glass is still 500 ml,
so, the volume of bubbles is 125 ml.
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What is the molarity of a solution of h3po4 if 10.2 ml is neutralized by 53.5 ml of 0.20m koh what is the molarity of a solution of h3po4 if 10.2 ml is neutralized by 53.5 ml of 0.20m koh 0.67m h3po4 0.15m h3po4 0.35m h3po4 0.37m h3po4
The molarity of the solution of H₃PO₄ needed to neutralize the KOH solution is 0.35 M
Balanced equationH₃PO₄ + 3KOH —> K₃PO₄ + 3H₂O
From the balanced equation above,
The mole ratio of the acid, H₃PO₄ (nA) = 1The mole ratio of the base, KOH (nB) = 3How to determine the molarity of H₃PO₄ Volume of acid, H₃PO₄ (Va) = 10.2 mLMolarity of base, Ca(OH)₂ (Mb) = 0.2 MVolume of base, Ca(OH)₂ (Vb) = 53.5 mL Molarity of acid, H₃PO₄ (Ma) =?MaVa / MbVb = nA / nB
(Ma × 10.2) / (0.2 × 53.5) = 1 / 3
(Ma × 10.2) / 10.7 = 1 / 3
Cross multiply
Ma × 10.2 × 3 = 10.7
Ma × 30.6 = 10.7
Divide both side by 30.6
Ma = 10.7 / 30.6
Ma = 0.35 M
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What will occur when the trough of Wave A overlaps the crest of Wave B?
Destructive interference will occur, causing the new wave to have more energy than Wave A or Wave B.
Constructive interference will occur, causing the new wave to have more energy than Wave A or Wave B.
Destructive interference will occur, causing the new wave to have less energy than Wave A or Wave B.
Constructive interference will occur, causing the new wave to have less energy than Wave A or Wave B.
Answer:
Destructive interference will occur, causing the new wave to have less energy than Wave A or Wave B.
Explanation:
Destructive interference has lesser intensity.
When the trough of Wave A overlaps the crest of Wave B, destructive interference will occur, causing the new wave to have less energy than Wave A or Wave B. Therefore, option C is correct.
What is interference and its types?Interference is the phenomenon that occurs when two or more waves meet and overlap with each other.
There are two types of interference: constructive interference and destructive interference.
Constructive Interference: This occurs when the crest of one wave overlaps with the crest of another wave or the trough of one wave overlaps with the trough of another wave. Destructive Interference: This occurs when the crest of one wave overlaps with the trough of another wave. The resulting wave has a lower intensity, which corresponds to a decrease in energy.Therefore, option C is correct.
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What pressure will 13 moles of propane, C3H8, be in a 300 L tank when held at a constant temperature of 288 K?
The pressure of the given moles of propane with the given volume and temperature is 1.024atm.
What is Ideal Gas Law?The Ideal gas law or general gas equation emphasizes on the state or behavior of a hypothetical ideal gas. It states that "the pressure multiplied by volume is equal to moles multiply by the universal gas constant multiply by temperature.
It is expressed as;
PV = nRT
Where P is pressure, V is volume, n is the amount of substance, T is temperature and R is the ideal gas constant ( 0.08206 Latm/molK )
Given the data in the question;
Amount of gas n = 13molTemperature T = 288KVolume of the gas V = 300LPressure P = ?PV = nRT
P = nRT / V
P = ( 13mol × 0.08206Latm/molK × 288K ) / 300L
P = 307.23264Latm / 300L
P = 1.024atm
Therefore, the pressure of the given moles of propane with the given volume and temperature is 1.024atm.
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ii. If the pressure after landing was 1.0 atm, what was the volume of the passenger's collapsed water bottle? (Assume the bottle collapsed easily and temperature didn't change.) (6 points)
Using the ideal gas equation and Gay Lussac's law, the volume of the passenger's collapsed bottle after landing is 0.0075 L.
What is ideal gas equation?The ideal gas equation shows the relationship between temperature, pressure, volume and number of moles.
The volume of the passenger's collapsed bottle after landing is 0.0075 L.
Given that;
PV = nRT
P = gas pressureV = volume of gasn = number of moles of gasR = molar gas constantT = temperaturen = PV/RT
Hence:
P = 0.75 atm;
V = 0.5 L;
T = 295 K;
R = 0.082 atmL/K.mol
n = 0.75 * 0.5 / 0.082 * 295
n = 0.015 moles
If the pressure after landing was 1.0 atm;
V1n1 = V2n2
V2= V1n1/n2
V2 = 0.5 L * 0.015 moles/ 1 mole
V2 = 0.0075 L
The volume of the passenger's collapsed bottle after landing is 0.0075 L.
Missing parts;
A passenger on an airplane finished a 0.5 L bottle of water during the flight
and replaced the lid. The cabin pressure and temperature were maintained at
0.75 atm and 295 K during the flight. After landing, he noticed his empty water
bottle had collapsed. (12 points)
i. How many moles of gas were in the water bottle?
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A scientist finds a fossil that she thinks might make a good index fossil.
Which characteristic does this fossil most likely have?
Answer: A fossil will usually have remains or impressions of an animal or plant.
Answer:
the answer is b
Explanation:
trust me
what is 750 grams of phosphorus
Answer:
750 g of phosphorus is 750 g of phosphorus
requires temperatures of millions of degrees K
Describe polar and nonpolar molecules
Answer:
Polar molecules occur when there is an electronegativity difference between the bonded atoms. Nonpolar molecules occur when electrons are shared equal between atoms of a diatomic molecule or when polar bonds in a larger molecule cancel each other out.
Explanation:
hope it's helps
elect the correct answer. What is the formula of sulfurous acid? A. H2S B. HSO4 C. H2SO4 D. H2SO3
H2SO3 is the correct answer. I understand school is hard, but WORK HARDER!
Examine the nuclear reaction: Superscript 1 subscript 1 H plus superscript 1 subscript 0 n right arrow superscript 2 subscript 1 H. Why is this classified as a nuclear reaction rather than a chemical reaction? It is not balanced. A new compound is formed. A change has occurred in a nucleus. A new element has been formed.
The reaction that is described in the question is a nuclear reaction because a change has occurred in a nucleus.
What is a nuclear reaction?The term nuclear reaction has to do with a reaction in which there is a transformation of the nucleus of an atom.
As such, the reaction that is described in the question is a nuclear reaction because a change has occurred in a nucleus.
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Answer:
C
Explanation:
Edge 2022
Solid copper (III) wire reacts with sulfur in a synthesis reaction. If 1.35*10^25 atoms of
copper react with 15.0 grams of sulfur, how many grams of product will be produced and
how much excess reactant will be left over?
Moles of copper
No of molecules/Avagadro no1.35×10²⁵/6.022×10²³0.022×10^²2.2molesMass of copper
2.2(63.5)13.97gNow
According to law of conservation of mass
Mass of products=Mass of reactants
13.97+1528.97gWhat substance(s) do you predict will be able to diffuse through the cell membrane and why?
Consider substances that can easily diffuse through the lipid bilayer of the cell membrane, such as the gases oxygen (O2) and carbon dioxide (CO2). These small, fat soluble gasses and other small lipid soluble molecules can dissolve in the membrane and enter or exit the cell following their concentration gradient.
What is the number of electrons shared in the multiple carbon carbon.
Answer:
a single bond will share 2 electrons
double will share 4
so triple will share 6
balance following equation
H2 + _02 → _H20
Answer:
2H2+O2=2H20
Explanation: Since there are 2 Oxygen in the reactants then there must be 2 Oxygen in the products, meaning there is a coefficient of 2 in front of H20 and that makes there be 4 Hydrogen, so adjust the reactants (2 H2)
Describe the type of force which exists between particles in an Ideal gas. Explain why this type of force exists between the particles.
The Intermolecular force is a type of force which exists between particles in an Ideal gas.
What type of force which exists between particles in an Ideal gas?Intermolecular forces are considered weaker attractions that hold molecules in gas close together. This force of attraction is present between molecules or particles.
So we can conclude that the Intermolecular force is a type of force which exists between particles in an Ideal gas.
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What is a major problem with CFCs?
It is a greenhouse gas.
It does not readily break down in the atmosphere.
It isn't a good refrigerant.
It is toxic to breathe.
The major problem with CFCs is that It is a greenhouse gas, Option A is correct.
What are CFC's ?
Chlorofluorocarbons (CFCs) are nontoxic, nonflammable chemicals containing atoms of carbon, chlorine, and fluorine.
They are used in the manufacture of aerosol sprays, blowing agents for foams and packing materials, as solvents, and as refrigerants.
CFCs are classified as halocarbons, a class of compounds that contain atoms of carbon and halogen atoms
The major problem with CFC's is that they are green house gases
It destroys ozone in the upper atmosphere (stratosphere).
CFCs can produce more than 10,000 times as much warming, pound for pound, once they are in the air.
It is not only because of their dramatic warming potential but also
They were found to be the primary cause of the rapidly escalating destruction of the Earth’s ozone layer,
which protects the planet from dangerous, cancer-causing levels of ultraviolet radiation.
Therefore The major problem with CFCs is that It is a greenhouse gas, Option A is correct.
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what is the molar mass of H,S
Answer:
the answer to your question is 1.00784 u
molar mass of H₂S
= 2.Ar H + 1.Ar S
= 2. 1,00784 u + 1. 32,065 u
= 34.08068 u
17. Explain the relationship between atmospheric pressure and the actual boiling point of a liquid.
Answer:
The lower the atmospheric pressure, the lower the boiling point will be. The greater the pressure, the more energy required for liquids to boil, and the higher the boiling point.
All stoichiometry calculations involve what important step?
metric fraction
molar mass fraction
molecules fraction
mole ratio fraction
DONE
Answer:
Mole Ratio Fraction
Explanation:
That's the answer.......
Answer:
DExplanation:
Mole Ratio Fraction
what is the answer to this question? i do not know what the names are
The answer is Ethene.
Produced by heating natural gas.
Which is a non renewable resource A.oil b.sunlight c. Water d.wood
Answer:
(a) Oil
Explanation:
Oil is a renewable source, along with natural gas, coal, and nuclear energy.
lmk is this helped you
~rere
Answer:
A. Oil
Explanation:
Oil, along with natural gas, and coal are called fossil fuels and fossil fuels were formed within the Earth from dead plants and animals millions of years ago.
Which type of wave pushes the medium in the direction of the wave? *
A. transverse wave
B. compression wave
C. neither A nor B
D. both A and B
Answer:
Neither because it’s a longitudinal wave that is supposed to be the answer
Explanation:
Identify the acid, base, conjugate acid, and conjugate base in the following reaction:
HSO4- + NH3 = SO4-2 + NH4+
Answer:
Acid: HSO4-
Base: NH3
Conjugate Acid: NH4+
Conjugate Base: SO4-2
Explanation:
HSO4- gives a H+ to NH3 making NH4+ the conjugate acid.
Same can be said to the base.
Name the following compound:
CH3 - CH₂ - CH₂ - CH₂ - OH
[tex]\qquad\qquad\huge\underline{{\sf Answer}}[/tex]
Here we go ~
There are 4 carbon atoms in the chain, so it's prefix should be " But " and there are only sigma bonds, therefore the primary suffix will be " ane ", and the functional group attached to the end is " OH " denoting alcohol group, so the secondary suffix will be " ol "
Hence, the name of the compound will be ~
[tex]\qquad \sf \dashrightarrow \:Butan - 1 - ol[/tex]
or simply
[tex]\qquad \sf \dashrightarrow \: Butan ol[/tex]
ILL GIVE A BRAINLY PLS HELP
1.) How many O atoms are present in 5.00 moles of H2O?
a.)
3.01x1024 atoms
b.)
3.01 atoms
c.)
5 atoms
d.)
6.02x1024 atoms
2.) A sample of CO2 contains 1.8x1024 molecules. How many moles of carbon dioxide are in this sample?
a.)
6.02x1023 mol
b.)
3 mol
c.)
1.8 mol
d.)
3x1024 mol
Atoms are the unit of the molecule of the compound. The 3.01 x 10²⁴ atoms of oxygen are present in 5 moles of water and 3 moles of carbon dioxide in the sample.
What are atoms?Atoms are the smallest fundamental unit of the compounds that can be given by Avogadro's number.
For calculating the oxygen atoms in 5 mole water:
If 1 mole = 6.02 × 10²³
Then, 5 moles = 5 × 6.02 × 10²³
Hence, 3.01 x 10²⁴ atoms of oxygen are present in 5 moles of water.
Moles of carbon dioxide in the sample is calculated as:
If 1 mole of carbon dioxide = 6.02 × 10²³ molecules
Then moles in 1.8 x 10²⁴ molecules will be,
(1.8 x 10²⁴ molecules) ÷ (6.02 × 10²³ molecules) = 3 moles
Hence, 3 moles of carbon dioxide is present in the sample.
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How does the number of molecules in 1 mol of oxygen compare with the number of molecules in 1 mol of nitrogen?
O 1 mol of oxygen has fewer molecules.
O 1 mol of oxygen has more molecules.
O Each sample has the same number of molecules.
O The molecules cannot be compared without knowing the mass.
Answer:
The molecules cannot be compared without knowing the mass.
CH4(g) + 2O2 (g) →CO2(g) + 2H2O (l), ΔH = -890kj/mol
Calculate much heat is released when 3.5 moles of methane gas undergo a combustion reaction
A combustion reaction is a reaction that reacts with oxygen to produce the product. 3.5 moles of methane release - 3115 kJ/mol of heat.
What is a combustion reaction?A combustion reaction is a chemical reaction that involves the burning of the reactant in the presence of the oxygen molecule to release heat.
The balanced reaction of methane combustion is given as:
CH₄(g) + 2O₂ (g) → CO₂(g) + 2H₂O (l), ΔH = -890 kJ/mol
From the reaction, it can be said that 1 mole of methane combusts to produce -890kJ/mol enthalpy.
So, 3.5 moles will produce, 3.5 × -890kJ/mol = - 3115 kJ/mol.
Therefore, 3.5 moles of methane produce - 3115 kJ/mol heat.
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A bat flew directly toward its cave at a constant velocity for 0.4seconds. It flew 80 centimeters in that time. What was its velocity?
Answer:
Frequency of the ultrasonic sound, f=1000kHz=10
6
Hz
Speed of sound in air, V
a
=340m/s
The wavelength (λ
r
) of the reflected sound is given by the relation:
λ
r
=V/f
=340/10
6
=3.4×10
−4
m.
(b) Frequency of the ultrasonic sound, f=1000kHz=10
6
Hz
Speed of sound in water, V
w
=1486 m/s
The wavelength of the transmitted sound is given as:
λ
r
=1486/10
6
=1.49×10
−3
m.
A gas has a pressure of 98kpa at 30 depress celsiusm. what will the new pressure be if the temperature is increased to 35 degrees celsius
Answer:
99.6 kpa (or maybe 124.2 kpa <======see below)
Explanation:
Assuming constant volume: ( I also assumed +30 C initial temp)
P1/T1 = P2/T2
T2 * P1/T1 = P2 (T must be in K )
(35 + 273.15) * 98 /(273.15 + 30) = 99.6 kpa
Just in case this was -30 C to start, the answer would be 124.2 kpa