# chemistry

The molar mass of HCl is 36.5g use the fact that 1 amu = 1.6605x 10-24g power g to calculate Avogradro’s number.

1. 👍 1
2. 👎 0
3. 👁 210
1. hydrogen nucleus =
1 gram/mol = 1 amu * AV molecules/mol * 1.6605*10^-24 grams/amu
so
AV = 1 /(1.6605*10^-24
= .6022 * 10^24
= 6.022*10^23

1. 👍 1
2. 👎 0
posted by Damon

## Similar Questions

1. ### Chemistry

I need to find the average molar mass of an unknown element. The atomic mass is 120; the mass numbers of isotopes are 295, 296, 297, 298 and 299; the percent of each isotope is 2.356%, 4.325%, 15.652%, 48.452% and 29.215%. The

asked by Joe on October 13, 2012
2. ### Chemistry

I need to find the average molar mass of an unknown element. The atomic mass is 120; the mass numbers of isotopes are 295, 296, 297, 298 and 299; the percent of each isotope is 2.356%, 4.325%, 15.652%, 48.452% and 29.215%. The

asked by Joe on October 14, 2012
3. ### Chemistry

Naturally occurring boron is 80.20% boron-11 (of atomic mass 11.01 amu) and 19.80% of some other isotope form of boron. What must be the atomic mass of this second isotope in order to account for the 10.81 amu average atomic mass

asked by Peter on September 8, 2012
4. ### chemistry

Find the formula mass of the compound H2SO4. 1. 98.09 amu 2. 96.07 amu 3. 97.08 amu 4. 81.08 amu 5. 89.09 amu

5. ### Chemistry

Calculate the mass defect and the binding energy/nucleon of the nuclide 9/4 Be which has a mass of 9.012 182 24 amu. The mass of a proton is 1.007 276 47 amu and the mass of a neutron is 1.008 664 90. one amu= 1.6605*10^-27 and

asked by Michael on June 7, 2010
6. ### Chemistry

Calculate the mass defect and the binding energy/nucleon of the nuclide 9/4 Be which has a mass of 9.012 182 24 amu. The mass of a proton is 1.007 276 47 amu and the mass of a neutron is 1.008 664 90. one amu= 1.6605*10^-27 and

asked by Michael on June 7, 2010
7. ### Chemistry

Hi, Please provide assistance on the following problem. I worked out part of it, but do not know what to do after calculating pH for HCl. Suppose you dissolved 0.0365 grams of HCl in water to give a final volume of 10.0 mL. The

asked by Jeremy on March 19, 2012
8. ### science(conversion factors)

Imagine a particle of dust that masses 25.48ug. What is it's mass in atomic mass units? Round off to appropriate # of significant figures. The answer given in this physics book (Teqnichally not physics hence the conversion

asked by ~christina~ on August 1, 2007
9. ### science

How many grams of hydrochloric acid are required to react completely with 4.30g of zinc? How many molecules of gas will be produced? 1. Write the balanced chemical equation. Zn + 2HCl ==> ZnCl2 + H2 2. Convert grams Zn to mols.

asked by Josh on March 17, 2007
10. ### Chemistry 151

5) How many mL of 1M HCl is used to make the following dilutions? a) 100mL of 0.1M HCl = b) 250mL of 0.5M HCl= c) 10ml of 0.01M HCl= 36.64 is the molar mass of hcl do I divide that into ml?

asked by Selina on March 16, 2014

More Similar Questions