Answer:
The total number of carbon atoms on the left-hand side of the equation is 6 x 2 = 12.
carbon steel styrofoam silicon gold
Place the materials in the correct order with the most conductive first. 1 2 3 4
The correct order of materials from most conductive to least conductive is as follows:
GoldSiliconCarbon steelStyrofoamWhat is a conductive material?Conductive materials are those that can conduct electricity to a greater or lesser extent.
some electrical Conductors include:
Silver.Gold.Copper.Aluminum.Mercury.Steel.Iron.In conclusion, Silicon is described as a semiconductor material that has moderate conductivity which is widely used in electronic devices such as transistors and integrated circuits.
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How many moles of argon are there in 5.00 x 10² liters of argon at STP?
There are 22.32 moles of argon in 5.00 x 10² liters of argon at STP.
According to Standard Temperature and Pressure (STP) conditions, one mole of any ideal gas occupies a volume of 22.4 liters. Using this information, we can calculate the number of moles of argon, given the volume of 5.00 x 10² liters at STP.
First, we need to determine the number of moles that would occupy a volume of 22.4 liters at STP:
1 mole of Ar = 22.4 liters of Ar
Therefore, 5.00 x 10² liters of Ar = (5.00 x 10²) / 22.4 = 22.32 moles of Ar
Therefore, there are 22.32 moles of argon in 5.00 x 10² liters of argon at STP.
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2. The largest container on popcorn on record was 106 m3. There is water vapor (a gas) inside popcorn kernels. Why does adding heat pop the kernel into corn?
Answer:
Explanation:
h 7
1. (04.05 LC)
What does the atomic number of an atom tell us? (2 points)
O How much the atom weighs
The number of protons in the atom
Which column the element is in on the periodic table
O The number of electrons it is likely to lose
The atomic number provides essential information about an element's identity, including the number of protons and its position in the periodic table, which helps determine its chemical behavior and properties.
The atomic number of an atom tells us:
The number of protons in the atom: The atomic number represents the unique identifier for an element and indicates the number of protons in the nucleus of an atom.
Each element has a distinct atomic number, and this number determines its place on the periodic table. For example, hydrogen has an atomic number of 1, which means it has one proton in its nucleus.
Which column the element is in on the periodic table: The atomic number determines the element's position in the periodic table. Elements are arranged in order of increasing atomic number, and each column (group) on the periodic table represents elements with similar chemical properties.
For instance, all elements in Group 1 have an atomic number of 1 and share similar characteristics, such as a tendency to lose one electron and form a +1 ion.
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5. A container has oxygen and helium in it. The total pressure is known to be 6.75 atm. What is the pressure of oxygen if helium's pressure is 2.25 atm?
4.50 atm
Explanation:Dalton's law of partial pressures lets us find the individual pressures of gases within a mixture.
Dalton's Law of Partial Pressures
Dalton's law of partial pressures states that the total pressure of the mixture is equal to the sum of the partial pressures. Partial pressures refer to the individual pressures of the gases within the mixture. In equation form, Dalton's law of partial pressures is:
[tex]P_{T}= P_{A} +P_{B} +P_{C} ...[/tex]Using this concept and equation, we can find the pressure of oxygen.
Finding P of Oxygen
First, let's write an equation to represent this situation. We know that the total pressure is equal to the pressure of helium plus oxygen.
[tex]P_{T} =P_{He} + P_O[/tex]Now, we can plug in the information we know,
6.75 atm = 2.25 atm + P₀Finally, solve for P₀
P₀ = 4.50 atmRemember that since this calculation is based on measured values, we need to round according to significant figure rules. This means that the pressure of oxygen is 4.50 atm.
The pressure of oxygen if helium's pressure is 2.25 atm is 4.50 atm.
To determine the pressure of oxygen in the container, we can use Dalton's law of partial pressures, which states that the total pressure of a mixture of gases is equal to the sum of the partial pressures of each gas.
In this case, the total pressure is given as 6.75 atm, and the pressure of helium is given as 2.25 atm. We need to find the pressure of oxygen (O2).
According to Dalton's law:
Total pressure = Pressure of oxygen + Pressure of helium
6.75 atm = Pressure of oxygen + 2.25 atm
To find the pressure of oxygen, we can rearrange the equation:
Pressure of oxygen = Total pressure - Pressure of helium
Pressure of oxygen = 6.75 atm - 2.25 atm
Pressure of oxygen = 4.50 atm
Therefore, the pressure of oxygen in the container is 4.50 atm.
This result is obtained by applying Dalton's law, which states that in a mixture of gases, each gas contributes to the total pressure independently. The individual pressures of the gases can be determined by subtracting the pressure of one gas from the total pressure.
In this case, the pressure of oxygen is calculated by subtracting the pressure of helium (known as the partial pressure of helium) from the total pressure of the mixture. This assumes that the gases do not interact chemically, and their behavior can be considered ideal.
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HF+H2o reacts to form ??
Answer:
Explanation:
HF + H2O reacts to form H3O+ (hydronium ion) and F- (fluoride ion).
What is the volume of water (in mL) of 19.5487 g of water (measured at 25.4 °C)?
To determine the volume of water, we need to account for the density of water, which changes with temperature. However, at 25.4°C, the density of water is close enough to 1 g/mL for practical purposes. Therefore, we can approximate the volume of water to be the same as its mass.
Given:
Mass of water = 19.5487 g
Volume of water = Mass of water
Therefore, the volume of water is approximately 19.5487 mL.
Select the correct answer.
Which statement best reflects the development of the central idea of the text?
A.
The Buffalo Soldiers built the Mauna Loa trail as part of their vacation exercises while they were in Honolulu.
B.
Bad weather and primitive working conditions led many of the Buffalo Soldiers to become overworked and underappreciated.
C.
In Honolulu, the Buffalo Soldiers broke down some racial barriers and endured dangerous working conditions to build the Mauna Loa Trail.
D.
Businessman Lorrin Thurston and geologist Thomas Jaggar built the Mauna Loa Trail with the help of the Buffalo Soldiers.
Answer:C. In Honolulu, the Buffalo Soldiers broke down some racial barriers and endured dangerous working conditions to build the Mauna Loa Trail.
Explanation:
Based on the given options, the statement that best reflects the development of the central idea of the text is: "C"
This statement highlights the central idea that the Buffalo Soldiers played a significant role in the construction of the Mauna Loa Trail, overcoming racial barriers and facing challenging working conditions in Honolulu.
How do particles tend to move in solids?
They vibrate about fixed points.
They move randomly through the solid while remaining in close contact with other particles.
They move in orbits around a center.
They move randomly through the solid and separately from other particles.
What is the pressure in bar of a 4.50 L tank with 3.35 moles of oxygen at 39.3 °C? R = 0.08314 L・bar/mol・K.
19.3 bar
Explanation:The ideal gas law allows us to calculate different characteristics of gases.
Ideal Gas Law
One way to calculate different values of gases we can use the ideal gas law. This law was named for the fact that it assumes gases behave "ideally." This means that the gases have perfectly elastic collisions and experience no intermolecular forces (IMFs). In equation form, this law is:
PV = nRTIn the equation, P is pressure, V is volume, n is moles, R is the gas constant, and T is the temperature in Kelvin. It is important to ensure that the units of the gas constant match the units of pressure that you are solving for.
Finding Pressure
To find pressure, we need to plug in the information we know and solve for P. The units of the gas constant we are given already match the pressure, so we do not need to convert. However, the temperature is given in °C not K. This means we need to convert; to do this, add 273 to °C.
39.3 °C + 273 = 312.3KNow, we can plug all of our information into the ideal gas law.
P · 4.50L = 3.35mol · 0.08314L・bar/mol・K · 312.3KTo find P, divide both sides by 4.50.
P = 19.33 barSince the question is based on measured values, we need to round according to significant figure rules. The measured values in the question have 3 sig figs, so our answer should also have 3. This means the pressure is 19.3 bar.
What the expected outcome is, if the MDS is successfully implemented
If the MDS (Minimum Data Set) is successfully implemented, several positive outcomes can be expected. The MDS is a standardized assessment tool used in healthcare settings to evaluate the physical, mental, and psychosocial well-being of patients.
Its successful implementation can lead to improved patient care, more efficient resource allocation, and enhanced data analysis.With the MDS in place, healthcare providers can gather consistent and comprehensive data about patients, enabling better understanding of their needs and tailoring of individualized care plans.
This can result in improved treatment outcomes and patient satisfaction. Additionally, the MDS facilitates effective communication and information sharing among healthcare professionals, leading to coordinated care and reduced errors.From a broader perspective, successful implementation of the MDS allows for accurate and reliable data collection, enabling robust research and evidence-based decision-making.
This can contribute to advancements in healthcare practices, policy development, and quality improvement initiatives. Ultimately, the successful implementation of the MDS can enhance patient outcomes, improve healthcare delivery, and drive positive changes in the healthcare system as a whole.
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How many grams of helium will occupy a volume of 575 mL at 760 mmHg and 20°C?
0.0956 grams of helium will occupy a volume of 575 mL at 760 mmHg and 20°C
To calculate the mass of helium that will occupy a given volume at a specific temperature and pressure, we need to use the ideal gas law equation: PV = nRT. Here's how you can solve the problem:
Convert the volume to liters: 575 mL = 575/1000 = 0.575 L.
Convert the pressure to atmospheres: 760 mmHg = 760/760 = 1 atm.
Convert the temperature to Kelvin: 20°C = 20 + 273.15 = 293.15 K.
Plug the values into the ideal gas law equation: (1 atm) * (0.575 L) = n * (0.0821 L·atm/(mol·K)) * (293.15 K).
Rearrange the equation to solve for n (the number of moles): n = (1 atm * 0.575 L) / (0.0821 L·atm/(mol·K) * 293.15 K).
Calculate the value of n: n = 0.0239 moles.
To find the mass, we need to know the molar mass of helium, which is approximately 4 grams per mole.
Multiply the molar mass by the number of moles: 4 g/mol * 0.0239 moles = 0.0956 grams.
Therefore, approximately 0.0956 grams of helium will occupy a volume of 575 mL at 760 mmHg and 20°C.
Note: The ideal gas law assumes ideal gas behavior, and the calculated result may not be accurate under extreme conditions or for gases that deviate significantly from ideal behavior.
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21. An organic compound C2H4O, has two functional isomers A and B. Isomer A changes blue litmus into red and B has fruity smell.
a Give the reaction for the formation of A by using Grignard's reagent.
b) Convert the isomer A into isomerB?
c) Write a suitable test reaction to distinguish A frommethanoic acid.
(2)
(1)
d) Arrange the following in the decreasing order of their acidic strength and give reason for your
answer
CH;COOH, CICH,COOH, FCH,COOH, C.H;COOH
(2)
e) Identify A and B of the following reactions.
(2)
a)The reaction for the formation of A by using Grignard's reagent.
[tex]CH_3MgBr + HCHO (formaldehyde) - > CH_3CHOH (isomer A)[/tex]
b)The converted isomer A into isomer
[tex]BCH_3CHOH (isomer A) - > H_2SO_4, heat - > CH_3COCH_3 (isomer B)[/tex]
c)A suitable test reaction can be the reaction with sodium bicarbonate [tex](NaHCO_3) is HCOOH + NaHCO3 - > CO_2 + H_2O + NaCO_3[/tex]
[tex]d)CH_3COOH > ClCH_2COOH > FCH_2COOH > CH_3COOH[/tex]
e)Without the specific reactions or compounds mentioned, it is not possible to identify isomer A and isomer B.
a) To form isomer A using Grignard's reagent, we can start with an appropriate Grignard reagent, such as methylmagnesium bromide (CH3MgBr). The reaction can be represented as follows:
[tex]CH_3MgBr + HCHO (formaldehyde) - > CH_3CHOH (isomer A)[/tex]
b) To convert isomer A into isomer B, a dehydration reaction can be performed. For example:
[tex]CH_3CHOH (isomer A) - > H_2SO_4, heat - > CH_3COCH_3 (isomer B)[/tex]
c) To distinguish isomer A from methanoic acid (HCOOH), a suitable test reaction can be the reaction with sodium bicarbonate ([tex]NaHCO_3[/tex]). Methanoic acid, being a carboxylic acid, will react with sodium bicarbonate to produce carbon dioxide (CO2) gas:
[tex]HCOOH + NaHCO_3 - > CO_2 + H_2O + NaCO_3[/tex]
Isomer A, which is an alcohol, will not react with sodium bicarbonate and will not produce carbon dioxide gas.
d) The decreasing order of acidic strength among the given compounds is as follows:
[tex]d)CH_3COOH > ClCH_2COOH > FCH_2COOH > CH_3COOH[/tex]
The reason for this order is the presence of electron-withdrawing groups (such as halogens) in the carboxylic acid compounds. The more electronegative the halogen, the more it can withdraw electron density from the carboxylic acid functional group, making it more acidic.
e) Without the specific reactions or compounds mentioned, it is not possible to identify isomer A and isomer B based on the given information. Further details or reactions are needed to determine the specific compounds involved.
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How many molecules are there in 5.00 moles of glucose, C6H12O6?
There are 3.011 × 10²⁴ molecules of glucose (C₆H₁₂O₆) in 5.00 moles of glucose.
How to find the number of moleculesTo determine the number of molecules in 5.00 moles of glucose C₆H₁₂O₆ we use Avogadro's numbe which is approximately 6.022 × 10^23 molecules per mole.
Number of moles of glucose molecules = Number of moles of glucose × Avogadro's number
number of moles of glucose molecules = 5.00 moles × 6.022 × 10²³molecules/mole
number of moles of glucose molecules = 3.011 × 10²⁴ molecules
we can there fore say that the number of glucose (C₆H₁₂O₆) molecules in 5.00 moles of glucose is 3.011 × 10²⁴ molecules.
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A solution of KC2H3O2 is diluted from its original concentration of 2.3 M to a new concentration 2.1 M. If it’s new volume is 191.8 mL, what was the original volume of the concentration solution?
The original volume of the concentrated solution was 182.7 mL.
To solve this problem, we can use the formula for dilution:
C1V1 = C2V2
Where C1 is the initial concentration, V1 is the initial volume, C2 is the final concentration, and V2 is the final volume.
We are given that the initial concentration (C1) is 2.3 M, the final concentration (C2) is 2.1 M, and the final volume (V2) is 191.8 mL. We want to find the initial volume (V1).
Plugging in the values we know into the dilution formula, we get:
(2.3 M) V1 = (2.1 M) (191.8 mL)
Simplifying this expression, we can solve for V1:
V1 = (2.1 M) (191.8 mL) / (2.3 M)
V1 = 182.7 mL
It's important to note that the units of concentration and volume must be consistent in this formula. In this case, the concentrations are given in units of M (moles per liter), and the volumes are given in units of mL (milliliters).
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a child is 3 feet 5 inches tall. How tall is the child in meters?
The child's height of 3 feet 5 inches is equivalent to 1.04 meters when converted using unit conversion factors.
Explanation:To convert the child's height from feet and inches to meters, you would first have to convert everything to the same unit. The child is 3 feet 5 inches tall. Since one foot is equal to 12 inches, the child's height is equivalent to (3 feet x 12 inches/foot + 5 inches) = 41 inches. There are 2.54 centimeters in an inch, so the child's height in centimeters is (41 inches x 2.54 centimeters/inch) = 104.14 centimeters. There are 100 centimeters in a meter, so the child is 1.04 meters tall, when rounded to two decimal places.
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How many moles of H2can be produced from 0.95 mole of Al?
Answer:
1.43 mol of H2
Explanation:
create the balanced equation:
2Al +6HCl to 2AlCl3 + 3H2
from the equation you can see that 2 mols of Al react with 3 mols of H2. so if you have .95 mols of H2 it is (0.95 mol Al)x(3 mol H2/ 2 mol Al)= 1.43 mol of H2
the mixing of acetic acid with sodium acetate will produce a buffer solution with a pH value
I. < 7.0
II. > 7.0
III. = 7.0
A. I only.
B. II only.
C. III only.
D. II and III.
The mixing of acetic acid with sodium acetate will produce a buffer solution with a pH value is > 7.0, hence option B is correct.
The pH scale determines how acidic or basic water is. The range is 0 to 14, with 7 representing neutrality.
Acidity is indicated by pH values below 7, whereas baseness is shown by pH values above 7. In reality, pH is a measurement of the proportion of free hydrogen and hydroxyl ions in water.
When sodium acetate is added to an acetic acid solution, the pH value rises because the concentration of h+ ions drops as the salt concentration rises in the buffer solution.
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Explain how salt mines produce salt for commercial use
Answer:
Commercial salt is manufactured from rock salt, as well as from seawater and other natural and artificial brines.In solution mining, water is pumped into the underground rock salt deposits to create brine that is then pumped back out to the surface. The brine is then evaporated in huge evaporating vessels to make the familiar white salt. This salt can be used in industry, by food manufacturers and, of course, at the table.
Sample Response: Matter is any substance that has
mass and takes up space. It can be identified using
physical properties such as density. Matter can change
states, which can be measured as boiling and melting
points. It can also be identified based on chemical
properties such as reactivity, flammability, and
composition.
What did you include in your response? Check all that
apply.
Matter is any substance that has mass and takes up
space.
Matter can be identified using physical properties
such as density and the boiling and melting points.
Matter can be identified based on chemical
properties such as reactivity, flammability, and
composition.
Done
The responses that can be included are : matter is any substance that has mass and takes up space, matter can be identified using physical properties, such as density and the boiling and melting points, matter can be identified based on chemical properties such as reactivity, flammability, and composition.
Matter is any substance that has mass and takes up space. This is a fundamental characteristic of matter, distinguishing it from non-material entities. Matter can be identified using physical properties such as density. Density is the measure of how much mass is contained in a given volume of a substance. Additionally, the boiling and melting points of matter can also be used to identify it. These points represent the temperatures at which matter changes from one state to another (e.g., from a solid to a liquid or from a liquid to a gas). Matter can also be identified based on its chemical properties. Chemical properties include reactivity, which refers to how a substance interacts with other substances; flammability, which indicates the ability to burn or ignite; and composition, which refers to the types and proportions of elements or compounds present in a substance. These characteristics and properties help scientists categorize and understand different forms of matter, enabling them to study and manipulate it for various purposes, such as in chemistry, physics, and engineering.
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If you increase the amount of fiber in a product, the total carbs in the product
A. Multiplies
B. Increases
C. Stays the same
D. Decreases
Answer: C. Stays the same
Explanation:
Increasing the amount of fiber in a product does not directly affect the total amount of carbohydrates in the product. Fiber is a type of carbohydrate that is not fully digested by the body, so it is not counted as a part of the total carbohydrate content. Therefore, increasing the fiber content would not change the total carbohydrates in the product.
Consider the general reversible reaction. What is the equilibrium constant expression for the given system?
The correct equilibrium expression for the reaction is shown by option D
What is equilibrium expression?
The law of mass action, from which the equilibrium expression is derived, states that, under constant temperature conditions, at equilibrium, the ratio of the product of the concentrations of the products to the product of the concentrations of the reactants is constant.
The relationship between the concentrations (or partial pressures) of reactants and products in a chemical process at equilibrium is described by an equilibrium expression.
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A 3.60 cm³ sample of solid tin metal has a density of 5.770 g/cm3. What volume does this sample of tin occupy in its liquid state? The density of liquid tin is 6.990g/cm³.
The volume that the sample of tin occupies in its liquid state is approximately 2.974 cm³.
To find the volume of the sample of tin in its liquid state, we can use the concept of density and the given information.
Given:
Initial volume of the sample (solid tin) = 3.60 cm³
Density of solid tin = 5.770 g/cm³
Density of liquid tin = 6.990 g/cm³
To calculate the volume of the sample in its liquid state, we can use the following formula:
Volume = Mass / Density
First, let's calculate the mass of the sample of tin in its solid state using the density and volume information:
Mass of solid tin = Density of solid tin * Volume of solid tin
= 5.770 g/cm³ * 3.60 cm³
Next, we can calculate the volume of the sample in its liquid state using the mass of the sample and the density of liquid tin:
Volume of liquid tin = Mass of solid tin / Density of liquid tin
Now, let's perform the calculations:
Mass of solid tin = 5.770 g/cm³ * 3.60 cm³
= 20.772 g
Volume of liquid tin = Mass of solid tin / Density of liquid tin
= 20.772 g / 6.990 g/cm³
Finally, calculate the volume:
Volume of liquid tin = 2.974 cm³ (approximately)
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A balloon filled with helium gas has a volume of 500 mL at a pressure of 1 atm. The balloon is released and reaches an altitude of 6.5km where the pressure is 0.5 atm. Assuming that the temperature is constant, what volume does the gas occupy at this height?
At an altitude of 6.5 km where the pressure is 0.5 atm, the volume of the gas in the balloon would be 1000 mL.
To solve this problem, we can use Boyle's Law, which states that the pressure and volume of a gas are inversely proportional at constant temperature. Mathematically, Boyle's Law can be expressed as:
P₁V₁ = P₂V₂
where P₁ and V₁ are the initial pressure and volume, and P₂ and V₂ are the final pressure and volume.
In this case, the initial pressure and volume are given as 1 atm and 500 mL, respectively. The final pressure is 0.5 atm, and we need to find the final volume.
Plugging the given values into Boyle's Law, we have:
(1 atm)(500 mL) = (0.5 atm)(V₂)
Simplifying the equation, we get:
500 mL atm = 0.5 V₂ atm
To solve for V₂, we divide both sides of the equation by 0.5 atm:
V₂ = (500 mL atm) / (0.5 atm)
V₂ = 1000 mL
Therefore, at an altitude of 6.5 km where the pressure is 0.5 atm, the volume of the gas in the balloon would be 1000 mL.
It's important to note that this calculation assumes that the temperature remains constant throughout the process. Additionally, in reality, the temperature may change with altitude, which could affect the behavior of the gas.
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What type of compound is represented by the graph at right? A. strong base B. strong acid C. weak base D. weak acid
The type of compound represented by the graph at right is a strong acid (option B).
What is a strong acid?An acid is generally any compound capable of dissociating into its respective constituent ions when in an aqueous solution.
An acid is categorised as strong or weak depending on whether it can dissociate completely or partially. A strong acid dissociates completely in water.
According to this question, HA, when added to water, dissociates into H+ and A- ions, hence, is a strong acid.
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. Liquid crystals have wide practical application due to their optical and electrical properties.
Which of the following statements is INCORRECT about the use of liquid crystals?
A. They can be used as temperature sensors.
B. They are used in the dial of analogue watches.
C. They are used in skin thermography to detect blockage of veins.
D. They can be used to find the point of potential failure in a electrical circuits
Answer:
C. They are used in skin thermography to detect blockage of veins.
Explanation:
Liquid crystals are not typically used in skin thermography to detect blockage of veins. Skin thermography usually relies on infrared imaging to detect and analyze variations in skin temperature, which can indicate potential health issues. Liquid crystals are commonly used in temperature sensors, display technologies (such as in the dial of analog watches), and can be employed in electrical circuits to find potential failure points.
thank you
balanced hydrogen sulphide
If the value of Ksp for Cd (IO3)2 at 25 °C is 2.5 × 10-8, what is the molar solubility of Cd (IO3)2?
To determine the molar solubility of Cd(IO₃)₂, it is required to use the solubility product constant (Ksp) and the stoichiometry of the compound.
Given information,
Ksp = 2.5 × 10⁻⁸
Temperature = 25°C
The balanced equation for the dissolution of Cd(IO₃)₂ is:
Cd(IO₃)₂(s) ⇌ Cd₂+(aq) + 2 IO₃⁻(aq)
The expression for the solubility product constant is given by:
Ksp = [Cd²⁺][IO₃⁻]²
The equilibrium concentrations can be expressed as:
[Cd²⁺] = x mol/L
[IO₃⁻] = 2x mol/L
Substituting these values into the Ksp expression:
Ksp = (x)(2x)² = 4x³
Now,
2.5 × 10⁻⁸ = 4x³
Solving for x:
x³ = (2.5 × 10⁻⁸)/4
x = (2.5 × 10⁻⁸)/[tex]4^{1/3}[/tex]
x = (2.5 × 10⁻⁸)/1.58
x= 1.58 × 10⁻⁸
Therefore, the molar solubility is 1.58 × 10⁻⁸.
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Calculate the relative atomic mass
The relative atomic mass of the sample of rubidium is approximately 48.6.
To calculate the relative atomic mass of the sample of rubidium using the given information, we can use the following steps:
Calculate the contribution of each isotope to the average atomic mass based on their abundance:
Isotope 1: Relative abundance = 72%, Mass number = 48
Isotope 2: Relative abundance = 28%, Mass number = 50
Contribution of isotope 1 = (72/100) * 48
Contribution of isotope 2 = (28/100) * 50
Sum the contributions of each isotope to obtain the average atomic mass:
Average atomic mass = Contribution of isotope 1 + Contribution of isotope 2
Calculate the values for the contributions and sum them up.
Round the average atomic mass to the appropriate number of significant figures.
Let's perform the calculations:
Contribution of isotope 1 = (72/100) * 48 = 34.56
Contribution of isotope 2 = (28/100) * 50 = 14.00
Average atomic mass = Contribution of isotope 1 + Contribution of isotope 2
Average atomic mass = 34.56 + 14.00 = 48.56
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An atom X is 9 times heavier than 1/12 the mass of a carbon-12 atom. What is the relative atomic mass of atom X ?
The relative atomic mass of atom X is 9.
The relative atomic mass of an element is the average mass of its atoms relative to 1/12th the mass of a carbon-12 atom.
Given that atom X is 9 times heavier than 1/12th the mass of a carbon-12 atom, we can calculate the relative atomic mass of X as follows:
Relative atomic mass of X = (9 × 1/12) × relative atomic mass of carbon-12
The relative atomic mass of carbon-12 is defined as exactly 12. Therefore, we have:
Relative atomic mass of X = (9 × 1/12) × 12
= 9
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