# science

how do u calulate the percentage composition of NO2 and mgcl2

You don't. There is no NO2 in MgCl2 which should be obvious.

1. 👍 0
2. 👎 0
3. 👁 46

## Similar Questions

1. ### chem

how do u calulate percentage composition of NO2 [mass N/mass NO2] x 100 = %Nitrogen [mass O2/mass NO2] x 100 =%oxygen

asked by san on March 17, 2007
2. ### science/chem

calculate the percentage composition in NO2 Figure the mol mass of NO2 (atomic mass N + 2*atomic masss O) percent N= atomicmassN/molmassNO2 * 100 percent O= 2*atomicmassO/molmassNO2 *100

asked by racheal on March 22, 2007
3. ### Chemistry

A 1.0-g sample of MgCl2 produced a 10.00C increase in a calorimeter charged with 40.0mL of deionized water. The specific heat is of MgCl2 is 0.750J/C*g. What is the value of delta(s)H for MgCl2? I know that the formula needed is

asked by MB on March 29, 2015
4. ### Chemistry

A 1.0-g sample of MgCl2 produced a 10.00C increase in a calorimeter charged with 40.0mL of deionized water. The specific heat is of MgCl2 is 0.750J/C*g. What is the value of delta(s)H for MgCl2? I know that the formula needed is

asked by M on March 28, 2015
5. ### College Chemistry

If 69.3g of magnesium chloride were produced from a process with a known yield of 78.3%, find the mass of carbon tetrachloride in grams that was used. Equation: 2CCl4 + MgCrO4 -> 2COCl2 + CrO2Cl2 + MgCl2 I was able to solve it but

asked by Bach on March 31, 2010
6. ### Chemistry

In order to make 500.0mL of a 1.835 M MgCl2 solution, then _______g of MgCl2 is needed. Moles of MgCl2= (1.835M)(0.5L)=0.9175mol Molecular Weight of MgCl2= 95.211 g/mol (0.9175mol MgCl2)(95.211 g/mol)= 87.36g of MgCl2 Did I do

asked by Queen on July 30, 2014
7. ### Chemistry

Solutions are made that contain 0.1 moles of each of the following compounds below in 100 g of H2O. Choose the compound whose solution will have the lowest freezing point. NaBr MgCl2---- KClO3 CO2 MgSO4 I know the answer is MgCl2

asked by Angel on February 10, 2010
8. ### chemistry

Find the percentage composition of (NH4)3PO4 What i don't understand is if the mass of the element isnt given how would i calculate?

asked by Rose on January 28, 2015
9. ### science

Which of the following equations correctly describes the relationship between the rate at which NO2 and Cl2 are consumed in the following reaction? 2 NO2(g) + Cl2(g) → 2 NO2Cl(g) A. -d(NO2)/dt = 1/2 [d(Cl2)/dt] B. -d(NO2)/dt = 2

asked by dude on May 16, 2011
10. ### chemistry

Which of the following equations correctly describes the relationship between the rate at which NO2 and Cl2 are consumed in the following reaction? 2 NO2(g) + Cl2(g) → 2 NO2Cl(g) A. -d(NO2)/dt = 1/2 [d(Cl2)/dt] B. -d(NO2)/dt = 2

asked by dude on May 16, 2011

More Similar Questions