The mass of a solid cube is 635 g, and each edge has a length of 6.3 cm.
Find the density of the cube.
Answer in units of kg/m3
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Pbco3 –> pbo+ co2. how many liters of carbon dioxide gas is produced from the decomposition of 32 grams of lead (ll) carbonate?

Areaction is first order with respect to reactant x and second order with respect to reactant y. which statement describes the rate law for this reaction?

If e is the symbol for an element, which two of the following symbols represent isotopes of the same element? 1. e2. e3. ea.1 and 2c.1 and 4b.3 and 4d.2 and 3