234 Uranium has three common isotopes. If the abundance of *U is 0.01%, the abundance of U is 0.71%, and the abundance of U is 99.28%, what is the average atomic mass of uranium? 235 238

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Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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а 1 (а)
234
Uranium has three common isotopes. If the abundance of
U is 0.01%, the
235
´U is 0.71%, and the abundance of
238
abundance of
´U is 99.28%, what is the
average atomic mass of uranium?
Q
1(b)
A graduated cylinder has a mass of 80g when empty. When 20mL of water is added,
the graduated cylinder has a mass of 100g. If a stone is added to the graduated
cylinder, the water level rises to 45mL and the total mass is 156g. What is the
density of the stone in g/cm3?
Q 1 (с)
How many grams are there in 985mL of nitrogen (N2) at 0.0°C and 1.00×10°mmHg?
Transcribed Image Text:а 1 (а) 234 Uranium has three common isotopes. If the abundance of U is 0.01%, the 235 ´U is 0.71%, and the abundance of 238 abundance of ´U is 99.28%, what is the average atomic mass of uranium? Q 1(b) A graduated cylinder has a mass of 80g when empty. When 20mL of water is added, the graduated cylinder has a mass of 100g. If a stone is added to the graduated cylinder, the water level rises to 45mL and the total mass is 156g. What is the density of the stone in g/cm3? Q 1 (с) How many grams are there in 985mL of nitrogen (N2) at 0.0°C and 1.00×10°mmHg?
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