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Verizon [17]
3 years ago
9

When an atom of oxygen (O) forms an anion by gaining two electrons, what is the anion’s charge?

Chemistry
1 answer:
Rudiy273 years ago
7 0

Answer:

bdndbdjdbdjdbdjdbsidbdidbsjsbsisbsidbd

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Mg has a higher effective nuclear charge than Na because
Alexus [3.1K]

Answer:

magnesium has a greater effective nuclear charge than sodium.

Explanation:

3 0
3 years ago
For Brainliest: Someone please help thank you!
ser-zykov [4K]
Hi,

14H
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3 0
4 years ago
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Perform the given operation and report the answer with the appropriate number of significant figures. 4.910 km - 0.08 km = ?
Digiron [165]

Answer:

4.83 km

Explanation:

Let's consider the following subtraction.

4.910 km - 0.08 km

For an addition or a subtraction, the rule for significant figures is as follows: <em>limit the reported answer to the rightmost column that all numbers have significant figures in common</em>, in this case, 2 figures after the decimal point.

4.910 km - 0.08 km = 4.83 km

5 0
4 years ago
This is the chemical formula for talc (the main ingredient in talcum powder):
MAXImum [283]

Answer : 6.41 moles of silicon are in the sample.

Solution : Given,

Moles of magnesium = 9.62 moles

The given chemical formula for talc is, Mg_3Si_2O_{52}OH_2

From the given chemical formula we conclude that

The stoichiometry of magnesium and silicon is 3 : 2

3 moles of magnesium is equivalent to 2 moles of silicon

9.62 moles of magnesium will be equivalent to \frac{2}{3}\times 9.62=6.41 moles of silicon

Therefore, the number of silicon present in sample are 6.41 moles.

7 0
4 years ago
A double replacement reaction occurs when hydrosulfuric acid (H2S) is mixed with an aqueous solution of Iron (III) bromide. What
NeTakaya
It is the 4th one that is correct and balanced
7 0
3 years ago
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