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Some atoms, like hydrogen and nitrogen, exist naturally as d…
Some atoms, like hydrogen and nitrogen, exist naturally as diatomic molecules.
How many quarts is 500. milliliters? (3 min.) 1L = 1.057 qt…
How many quarts is 500. milliliters? (3 min.) 1L = 1.057 qt
An unknown compound contains 58.37 mass percent bromine and…
An unknown compound contains 58.37 mass percent bromine and 41.63 mass percent fluorine. Determine its empirical formula. Atomic Mass Bromine (Br) = 79.904 g/mol Atomic Mass Fluorine (F) = 18.998 g/mol
Some atoms, like hydrogen and nitrogen, exist naturally as d…
Some atoms, like hydrogen and nitrogen, exist naturally as diatomic molecules.
6 min. What is the theoretical yield, in grams, of Cl2 when…
6 min. What is the theoretical yield, in grams, of Cl2 when 16.0 g of MnO2 and 30.0 g of HCl react according to the following chemical equation? MnO2 + 4HCl
Iron has a density of 7.87 g/mL. What mass of iron has a vo…
Iron has a density of 7.87 g/mL. What mass of iron has a volume of 5.97 mL? (3 min.)
Calculate the heat absorbed when 28.6 g of water is heated f…
Calculate the heat absorbed when 28.6 g of water is heated from 22.0°C to 78.3°C (specific heat of water = 4.184 J/(g·K)). 1 J = 1000 kJ. 4 min. HINT: Notice the units on the answers provided.
Iron has a density of 7.87 g/mL. What mass of iron has a vo…
Iron has a density of 7.87 g/mL. What mass of iron has a volume of 5.97 mL? (3 min.)
Consider a gas sample with a volume of 1.50 L at a constant…
Consider a gas sample with a volume of 1.50 L at a constant temperature. If the pressure is changed from 2.30 atm to 3.60 atm, what will the final volume be? 4 min.