PLEASE HURRY I WILL GIVE BRAINLIEST My Chemistry test that is timed! and please show work! I will give BRAINLIEST
Find the mass in grams of 3 x 10²³ molecules of F₂.
What is the percent composition of NiO, if a sample of NiO with a mass of 41.9 g contains 33.1g Ni and 8.8 g O?
What is the percent by mass of hydrogen in aspirin, C₉H₈O₄?
Calculate the molecular formulas of the compounds having the following empirical formulas and molar masses: C₂H₅, 58 g/mol; CH, 78 g/mol; and HgCl, 236.1 g/mol.
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Ican determine the molar mass of an element by looking on the under the atomic mass for the element. for example the molar mass of phosphorus is 30.974 grams/mole. avogadro’s number tells me the amount of representative particles in 1 mole of any substance. this means 12.011 gram sample of carbon and a 32.0 gram sample of sulfur have the same number of atoms.
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