Moles to Grams
Calculate how many grams are in 0.700 moles of H2O2?
H2O2 is 34.0146 grams/mole.
You multiply the moles given by the substance's molar mass:
0.700 mole x 34.0146 grams/mole = 23.8 grams
Convert 25.0 grams of KMnO4 to moles.
round to the nearest Thousandths place
The molar mass of KMnO4 is 158.034 grams/mole.
25/158.034=.158 moles
Calculate the molar mass of CuSO4.
Round to the nearest hundredths place.
Answer: What is 159.61 g/mol?
Calculate the mass percent of N in N205.
Round to the hundredth in a percentage.
Answer: What is 25.94%?
How many molecules can be found in 3.91 x 1012 moles of xenon?
2.36*1036 molecules of Xenon
Convert 2.50 moles of KClO3 to grams.
Round the nearest Whole number
KClO3 is 122.550 grams/mole.
2.50 moles x 122.550 grams/mole = 306 grams
calculate how many moles are in 17.0 grams of H2O2
Round to the nearest thousandths place
17/ 34.0146=.500 moles
Calculate the molar mass of CaCOH.
Round to the nearest hundredths place.
Answer: What is 69.09grams.
Calculate the mass percent of N in NH4Cl.
Round to the hundredth in a percentage.
Answer: What is 26.19%?
If you had a bottle that contained 5.69x1024 moles of water, how many atoms of water does the bottle hold?
3.43*1048 molecules of H2O
How many grams are there in 4.50 moles of Ba(NO2)2?
Answer: What is 1030 grams?
What is 1.2 grams of SO3 in moles?
Round to the nearest thousandths place
Answer: What is 0.014 moles?
Calculate the molar mass of Cr4(P2O7)3.
Round to the nearest hundredths place.
Answer: What is 729.81 g/mol ?
Calculate the mass percent of N in C2H8N2?
Round to the hundredth in a percentage.
Answer: What is 46.62%?
A particular sample of water contains 1.2 x 1024 moles, how many molecules of water is this?
7.22 molecules of Water
How many grams are in 0.83 molecules of HCl?
4.96*1023 g
How many moles of C12H22O11 are present in 3.0 x 102 g of the compound?
Answer: What is.98 moles
What is the molar mass of Zn(C2H3O2)2
Answer: What is 183.50 g/mol?
Calculate the mass percent of N in C9H15N5O
Round to the hundredth in a percentage.
Answer: What is 33.47%
How many atoms is 20.0g of chlorine gas, Cl2?
This is Double Conversion-
Grams to moles Then Moles to grams
1.70×1023 molecules Cl2
You figure out how many grams of the compound you have. Let's say you have 1000 g molecules/CO2
Convert to grams-
This is a double conversion equation
Answer: What is 7.31 x 10-20 g.
If we want to find the number of moles of HCl from 100g of HCl, what is the correct choice to put inside the parentheses for the numerator and denominator?
100*( / )= 2.74moles
molar mass= 36.46
Think about the equation for grams to moles
Answer: What is 1 mole/ 36.46 * 100= 2.74 moles
What is the Molar Mass of C12H24O6?
Answer: What is 264.122 g/mol?
Calculate the mass percent of N in C14H22N20.
Round to the hundredth in a percentage.
Answer: What is 11.96%?
A sample of NH3 gas occupies 75.0 liters at standard conditions. How many molecules is this?
Double conversion:
liters to Moles then Moles to Molecules
2.02 molecules of Azane