A block of lead displaces a volume of 27.9 mL. What is the mass of this block if the density of the lead is 11.34 g/mL?

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

From the question

volume of lead = 27.9 mL

density = 11.34 g/mL

We have

mass = 11.34 × 27.9 = 316.386

We have the final answer as

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in 1783 cavendish was working with his hydrogen gas and found that when he burned it and condensed the vapor it was water. this was very significant since it disproved the greek theory of elements completely since water was not a simple substance but the product of two gases. it was lavoisier who hearing of the experiment gave cavendish's gas the name hydrogen ("water-producer") and added that hydrogen burned by combining with oxygen and that water was a hydrogen-oxygen combination.

explanation:

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