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A hydrate is a compound that includes water molecules within its crystal structure. During an experiment to determine the percent by mass of water in a hydrated crystal, a student found the mass of the hydrated crystal to be 4.10 grams. After heating
C4H8
4
53.5 g/mol
35.0%
48.5 g
BeO
9.8%
171.3 g
A sample of a substance containing only magnesium and chlorine was tested in the laboratory and was found to be composed of 74.5% chlorine by mass. If the total mass of the sample was 190.2 grams, what was the mass of the magnesium?
C4H8
4
53.5 g/mol
35.0%
48.5 g
BeO
9.8%
171.3 g
The molar mass of Ba(OH)2 is
C4H8
4
53.5 g/mol
35.0%
48.5 g
BeO
9.8%
171.3 g
What is the total number of moles of atoms contained in 1 mole of NH3?
C4H8
4
53.5 g/mol
35.0%
48.5 g
BeO
9.8%
171.3 g
The gram formula mass of NH4Cl is
C4H8
4
53.5 g/mol
35.0%
48.5 g
BeO
9.8%
171.3 g
A substance has an empirical formula of CH2 and a molar mass of 56 g/mol. The molecular formula for this compound is
C4H8
4
53.5 g/mol
35.0%
48.5 g
BeO
9.8%
171.3 g
In which compound is the percent by mass of oxygen the greatest?
C4H8
4
53.5 g/mol
35.0%
48.5 g
BeO
9.8%
171.3 g
What is the percent composition by mass of nitrogen in NH4NO3?
C4H8
4
53.5 g/mol
35.0%
48.5 g
BeO
9.8%
171.3 g
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