Time remaining:
Easy Mole questions (SHOW CALCULATIONS CLEARLY)

Chemistry
Tutor: None Selected Time limit: 0 Hours

1- How many items are in 1.00 moles of Carbon?

2- How many grams of carbon are in 1.50 moles of Carbon?

3- How many moles of Hydrogen gas are in 5.04 grams of Hydrogen gas?

4- How many molecules of Carbon Dioxide (CO2) are in 88 grams of CO2

Mar 19th, 2015

1)  6.023 x10^23 atoms. 

1 mole of anything is 6.023 x10^23 units.

2) 1 mole of Carbon = 12 grams

1.5 mole = 1.5 x 12 = 18 grams

3) 5.04 grams hydrogen gas (1 mole H2/2.016 grams) 

= 2.5 moles hydrogen gas 

4) Atomic mass of CO2 = 12 + 32 = 44

88 grams is 2 mole of CO2.

1 Mole = 6.023 x10^23 molecules

2 Mole = 12.046 x10^23 molecules


Mar 19th, 2015

This is great!

But can you please elaborate further on question 3?

Much appreciated!

Mar 19th, 2015

Sure....give me 5 min.


Mar 19th, 2015

5.04 grams hydrogen gas

Hydrogen gas = H2 Whose atomic mass = 2.016 g

{ As, the atomic mass of H = 1.008 g }

1 mole H2 = 2.016 grams

 x mole of hydrogen = 5.04 grams

By unitary method:

1/x = 2.016/5.04

x = 5.04 / 2.016 = 2.5 moles

Hence, 2.5 moles hydrogen gas is the answer.

Dont forget to best the solution !!

For any more questions always remember, one tutor is always with you !!!!!!!!!

Mar 19th, 2015

Studypool's Notebank makes it easy to buy and sell old notes, study guides, reviews, etc.
Click to visit
The Notebank
...
Mar 19th, 2015
...
Mar 19th, 2015
Dec 4th, 2016
check_circle
Mark as Final Answer
check_circle
Unmark as Final Answer
check_circle
Final Answer

Secure Information

Content will be erased after question is completed.

check_circle
Final Answer