Science

If you are given a sample containg 1.204 x 10 24 molecules of NaCl, what is its weight in grams?

1. 👍 0
2. 👎 0
3. 👁 123
1. since 1 mole has 6.02*10^23 molecules, and mass of 58.45g, you have

12.04/6.02 * 58.45 = 116.9 g

that's 2 moles

1. 👍 0
2. 👎 0
posted by Steve

Similar Questions

1. chemistry

Are there formulas to solve the following problem? Complete the following table by replacing question marks with the correct numbers: (Note: Each horizontal row is a separate example, so in row #1, 175.32 grams of NaCl is how many

asked by alma on February 6, 2015
2. science

Complete the following table by replacing question marks with the correct numbers: (Note: Each horizontal row is a separate example, so in row #1, 175.32 grams of NaCl is how many moles of NaCl and how many molecules of NaCl does

asked by queen on September 14, 2013

Complete the following table by replacing question marks with the correct numbers: (Note: Each horizontal row is a separate example, so in row #1, 175.32 grams of NaCl is how many moles of NaCl and how many molecules of NaCl does

asked by Ella on February 5, 2013
4. chemistry

suppose you have two 1-L flasks one containing N2 at STP the other containg CH4 at STP how do these systems compare with respect to a)number of molecules B)density c)average kinetic energy of the molecules d)rate of effusion

asked by meg on January 26, 2011
5. ap

A volume of equimolar strong acid like HCl is mixed with an equal volume of equimolar strong base like NaOH in a beaker of water. What exists after the reaction? 1. mostly water molecules and HCl, NaOH, and NaCl molecules 2.

asked by cheri on October 1, 2012
6. chemistry

Determine the of mole of water molecules in one mole of a sample of an iron containing (nh4)2so4. FeSO4. nH2O. titrate a solution of the iron containg (solution Y)

asked by fiona on December 3, 2011
7. chemistry

1.what is the volume of NaCl in cubic cm and cubic nm if the Length is 0.563 nm? 2. the density of NaCl is 2.17 g/cm. What is the Mass? 3. Each repeating unit is composed of 4 NaCl molecules. What is the Mass of 1 NaCl molecule?

asked by andi on August 20, 2011
8. Chemistry

A 45 g sample of a ketose with a general formula CnH2nOn gives 18.45 liter of CO2 at 27C and 2 atm and 27 g of water when burned. If 1.204 x 10 23 molecules of this ketose weigh 30 g, what are its molecular and structural formulas

asked by Esmeralda on April 18, 2010
9. Chemistry

A 45 g sample of a ketose with a general formula CnH2nOn gives 18.45 liter of CO2 at 27C and 2 atm and 27 g of water when burned. If 1.204 x 10 23 molecules of this ketose weigh 30 g, what are its molecular and structural formulas

asked by Esmeralda on April 18, 2010
10. bio

You have a sample of NaCl that contains 100 mg/ml NaCl. You are trying to perform an reaction that requires 10ml of 20 mg/ml. Enter in the correct amount (in ml) of Stock NaCl solution you need to use to make 10ml of 20 mg/ml NaCl

asked by mina on March 1, 2011

More Similar Questions