The density of a substance is 1.63g/mL. what is the mass of 250 mL of the substance in grams?

Density of substance:- 1.63g/ml

Volume of substance:- 250 ml

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Mass of the substance.

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So the mass of the substance is 407.5 g

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so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer