Ask a New Question

Question

how do you calculate the mass of water that will be produced when 5.0 grams of H2 is reacted with excess O2?
14 years ago

Answers

Damon
one O atom for every 2 H atoms
every H atom weighs 1 unit
every H2 molecule weighs 2 units
every O atom weighs 16 units
the sum of 2 units and 16 units is 18 units, the H2O mass
so
2/18 = Hydrogen mass / water mass = 1/9
so
(1/9) of our water mass is 5 grams
9*5 = 45 grams
14 years ago

Related Questions

Calculate the mass of 0.250 L of ethyl acetate , if the density of ethyl acetate is 0.90g / ml . calculate the mass at 15.0 L at NH3 at 27 digree Celsius and 900 mm hg? Calculate the mass of 3.7dm^3 of hydrogen at 21.5°c and a pressure of 102Pa? Calculate the mass of 15.0L at 27 degree celcius and 900mmHg Calculate the mass of Fe(NH4)2(SO4)26H2O in your unknown sample. Show you work. Average mass of... Calculate the mass of Fe(NH4)2(SO4)26H2O in your unknown sample. Show you work. Average mass of u... Calculate the mass of a 0.265-mL sample of a liquid with a density of 0.660 g/mL. Calculate the mass of 30.0 L of NH3 at 37° C and 900. mm Hg. Show calculation solutions. calculate the mass of 8.22*10^23 atoms of rubidium Calculate the mass of 2.94*10^ 17 atoms of hafnium.
Ask a New Question
Archives Contact Us Privacy Policy Terms of Use