Question

Question 1

One mole of carbon is how many grams?


= grams


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12

Question 2

Select the best reason as to why chemists use moles in chemistry:


a

atoms are easily observable and measured on the atomic level

b

atoms are too small to measure and observe so we use lots of atoms instead

c

atoms essentially behave like the mammal moles

d

chemists do not chemistry students to understand chemistry

Question 3

How many moles of skittles are in 2.11 x 1024 skittles? You may use dimensional analysis to convert from skittles to moles. 1 mole = 6.02x1023 particles.


= mols of skittles


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Question 4

How many atoms, particles, molecules, or formula units are in one mole of a substance?


= (Three sig figs)


-Use the following format example to enter in your answer: 1x10^4



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Answer 1

3)No. of moles = given no./Avogadro's no.
=2.11 x 10^24/6.02 x 10^23
=0.35 x 10
= 3.5 moles

Hope this helps you!