One million atoms of a particular element have a mass of 1.99x10ˆ-17 grams.
How many moles of this element are there?
What is the molar mass of this element?
What is the identity of this element?

Question

One million atoms of a particular element have a mass of 1.99x10ˆ-17 grams.
How many moles of this element are there?
What is the molar mass of this element?
What is the identity of this element?

chmvijay · Answer

1,000, 000 atoms has mass of 1.99*10^-17
6.023 *10^23 atoms has mass of = 1.99*10^-17 * 1000000   / 6.023*10^23

cn u solve the above maths

avogardro no makes one mole of that element and it is the atomic mass of that element

anonymous · Answer

Thanks chmvijay! Let me start on this one and I let you know if I have any other questions!

anonymous · Answer

Ok, I'm getting a negative number. What am I doing wrong?

joannablackwelder · Answer

Make sure the -17 is an exponent. Can you write what you have done?

anonymous · Answer

(1.99x10^-17) x 1000000 = 1.99x10^-11
(1.99x10^-11) / (6.023x10^23) = 3.304001328x10^-35