3 years ago

Select the compound in which chlorine is assigned the oxidation number +5.

Chemistry

2 answers:

Ad libitum [116K]3 years ago

8 0

The answer is d.
Hope this helps plz give brainliest!

inn [45]3 years ago

4 0

Answer:

The answer is d

Explanation:

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What is the mass of 7 x 10^28 atoms of Fe?

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Answer:

6 x 10⁶ g Fe

Explanation:

Step 1: Set up dimensional analysis

7 x 10²⁸ atoms Fe (1 mol Fe/6.02 x 10²³ atoms Fe)(55.85 g Fe/1 mol Fe)

Step 2: Multiply, divide, and cancel out units

atoms Fe and atoms Fe cancel out.

mol Fe and mol Fe cancel out.

We should be left with g Fe.

7 x 10²⁸/6.02 x 10²³ = 116279 mol Fe

116279(55.85) = 6.49 x 10⁶ g Fe

Step 3: Sig figs

There is only 1 sig fig in this problem.

6.49 x 10⁶ g Fe ≈ 6 x 10⁶ g Fe

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