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You have 1.486 × 1023 atoms of helium (He). How many moles of helium do you have?

The molar mass of water is 18.02 g/mol. Given 66.29 g of water, how many moles of water do you have?

The molar mass of methane is 16.04 g/mol. Given 81.33 g of methane, how many moles of methane do you have?

What is 1.2839 × 104 in decimal notation?

Sugar water in a recently stirred glass is an example of …

What is the name of MgSO4 · 7 H2O?

What is the name of the acid, H3PO4?

What is the common name of N2O?

What is the formula for hydroiodic acid?

What is the answer to the question below using the correct number of significant figures? 88.1 + 11.99 = ?