Answer :
To express the number 38.1 g to three significant figures, we need to round it off to the nearest hundredth place, which is the second decimal place.
22 grammes of Carbon Dioxide include 6 grammes of carbon?
22 grammes of carbon dioxide contain 6 grammes of carbon. The conversion factor between grammes and moles is the molar mass of a chemical. Six moles of oxygen atoms are present in one mole of lead(II) nitrate. According to the chemical formula CuBr2, this compound contains 1 gramme each of copper and bromine.
Which of the subsequent types of bonds holds a single water molecule together?
Hydrogen bonds form between nearby hydrogen and oxygen atoms of adjacent water molecules in the case of water. A bond called a hydrogen bond is produced by the attraction between individual water molecules.
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Question:
"A sample of water contains 38.1 g. To three significant figures, this sample contains how many moles of water molecules?"
