Q1) What is the mass of a 4.00 L sample of a liquid that has a density of 0.941

Question

Q1)

What is the mass of a 4.00 L sample of a liquid that has a density of 0.941 g/mL ?

Express your answer using three significant figures.

m=

Q3)A box contains a mixture of small copper spheres and small lead spheres. The total volume of both metals is measured by the displacement of water to be 437 cm3 and the total mass is 4.20 kg .

Part A

What percentage of the spheres are copper?

Q2)

Determine the mass of oxygen in a 7.5 g sample of Cr2(CO3)3.

Express your answer to two significant figures and include the appropriate units.

m(O) =

Explanation / Answer

Answer

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