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german
3 years ago
10

Based on the results the students record, which group makes the most accurate measurements of the object?

Chemistry
1 answer:
Step2247 [10]3 years ago
6 0

Answer:

B.

Explanation:

It’s because when you subtract 78.5 and 77.5 you get 1. And when you do 79.5 and 78.5 you get 1 too. I know this because I got the answer right

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How many grams of mercury can be produced if 18.0 g of mercury (11) oxide decomposes?
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Answer:

18.0 g of mercury (11) oxide decomposes to produce 9.0 grams of mercury

Explanation:

Mercury oxide has molar mass of 216.6 g/ mol. It gas a molecular formula of HgO.

The decomposition of mercury oxide is given by the chemical equation below:

2HgO ----> 2Hg + O₂

2 moles of HgO decomposes to produce 1 mole of Hg

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