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Determine the percent by mass

What is the percent composition (percent by mass) of hydrogen in water? Hint:determine the percent composition (percent by mass)
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2. asked by Tayo
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A 45.10 g sample of ethylene glycol (C2H6O2) is dissolved in 250.0 g of water at 25.0 °C. Determine the molarity (M), mole
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2. asked by nay
3. 188 views
An unknown compound has a percent composition of 75.95% C, 17.72% N, and 6.33% H by mass with a molar mass of about 240 g/mol.
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2. asked by ezile
3. 177 views
An unknown compound has a percent composition of 75.95% C, 17.72% N, and 6.33% H by mass with a molar mass of about 240 g/mol.
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2. asked by ezile
3. 151 views
What percent by mass does the water constitute in Na2SO4*10H2O?Determine the formula for the hydrate of cobalt (II) acetate from
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2. asked by Christian
3. 1,054 views
Determine the percent mass composition and the molecular formula of the compound analyzed , such that it’s molar mass is
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2. asked by Lea
3. 146 views
I am completing a lab where I had to determine the mass percent of Mg(OH)2 in an antacid tablet , and I am trying to determine
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2. asked by Peter
3. 498 views
What is the mass of 2H2O in the equation below?The Law of Conservation of Mass can help you determine the mass of a reactant or
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2. 117 views
An unknown compound contains only the three elements C,H, and O. A pure sample of the compound is analyzed and found to be 65.60
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2. asked by some kid
3. 1,537 views
How do you determine the percent composition by mass of a 100 g K2SO4 solution containing a 20-g solute. What is the mole
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2. asked by Sofia
3. 1,079 views