Answer the following questions 4. What is the number atoms of formula units in 1.75 mol Al?A. 1.05 x1024 atmB. 2.90 x 1024 atmC. 1.05 x1023 atmD. 2.90 x1023 atm5. What is the number of formula units in 25.0 mol NANO3?A. 1.51 x1023 molB. 4.15 x 1023 molC. 1.51 x1025 formula unitsD. 4.15 x1025 formula units6. How many moles contain in 4.65 x 1024 atoms Cu?A. 7.72 atomsB. 7.72 molesC. 2.80 atoms7. How many moles contain in 2.75 x 1025 molecules CH4?a. 1.66 x1023 molesb. 1.66 x 1023 moleculesC. 45.68 molesD. 45.68 molecules8. What is the number of moles of NH3 in a 345g sample of the gas?A. 20.29 mol NH3 B. 2.29 mol NH3C. 5865 mol NH3D. 2.80 molesD. 58.65 mol NH3

Since you have asked multiple type questions, we will solve only first questions for you. If you…

Answered: 4. What is the number atoms of formula…

4. What is the number atoms of formula units in 1.75 mol Al? A. 1.05 x1024 atm B. 2.90 x 1024 atm C. 1.05 x1023 atm D. 2.90 x1023 atm

Introductory Chemistry: A Foundation

9th Edition

ISBN:9781337399425

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter15: Solutions

Section: Chapter Questions

Problem 3CR

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Concept explainers

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.

Question

Answer the following questions

4. What is the number atoms of formula units in 1.75 mol Al?
A. 1.05 x1024 atm
B. 2.90 x 1024 atm
C. 1.05 x1023 atm
D. 2.90 x1023 atm
5. What is the number of formula units in 25.0 mol NANO3?
A. 1.51 x1023 mol
B. 4.15 x 1023 mol
C. 1.51 x1025 formula units
D. 4.15 x1025 formula units
6. How many moles contain in 4.65 x 1024 atoms Cu?
A. 7.72 atoms
B. 7.72 moles
C. 2.80 atoms
7. How many moles contain in 2.75 x 1025 molecules CH4?
a. 1.66 x1023 moles
b. 1.66 x 1023 molecules
C. 45.68 moles
D. 45.68 molecules
8. What is the number of moles of NH3 in a 345g sample of the gas?
A. 20.29 mol NH3 B. 2.29 mol NH3
C. 5865 mol NH3
D. 2.80 moles
D. 58.65 mol NH3

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