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katen-ka-za [31]
2 years ago
9

What would make oppositely charged objects attract each other more?

Chemistry
1 answer:
eduard2 years ago
6 0

Answer:

The correct answer is A. increasing the positive charge of the positively charged object and increasing the negative charge of the negatively charged object

I hope this helped :D

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Find the mistake in this equation:
Lisa [10]

Answer:

Explanation:

It should be

2HCl + Mg --->  MgCl2 + H2

5 0
3 years ago
How many grams of o2 are in a 5.0 mol of the oxygen gas?
allsm [11]
We are tasked to find the amount of O2 in grams given only the number of moles of oxygen gas. To solve the problem, we need first to calculate the molecular weight of oxygen. Based on the periodic table, elemental oxygen has a molecular weight of 16 g/mol. Thus its molecular weight is,
O2=16.0g/mol (2)=32 g/mol

To solve for the amount of compound oxygen in grams, we have,
O2 (g)=5 mol x 32 g/mol =160 g.

This cancel out the mols both in the numerator and denominator leaving only the g as a unit. Therefore, 5 mols of oxygen is equal to 160 g of oxygen.
4 0
3 years ago
For a concentration technique, Stotal is given as 19.31 ± 0.035, Smb is 0.22 ± 0.008, and kA is 0.154 ± 0.007 ppm–1, where Stota
professor190 [17]

Answer:

B

Explanation:

8 0
3 years ago
A sample contains 0.500 mol of aluminum. What is the mass of aluminum in the sample (in grams)?
postnew [5]

Answer:

\boxed {\boxed {\sf About \ 13.5 \ grams \ of \ Al}}

Explanation:

To convert from moles to grams we must use the molar mass, which can be found on the Periodic Table.

  • Aluminum (Al): 26.981538 g/mol

Use this number as a fraction.

\frac{26.981538 \ g \ Al }{1 \ mol \ Al}

Multiply by the given number of moles.

0.500 \ mol \ Al *\frac{26.981538 \ g \ Al }{1 \ mol \ Al}

The moles of aluminum will cancel.

0.500 *\frac{26.981538 \ g \ Al }{1 }

0.500 *26.981538 \ g \ Al

13.490769 \ g  \ Al

The original number of moles, 0.500, has 3 significant figures, so our answer must have the same.

For the number we calculated, that is the tenth place. The 9 in the hundredth place tells us to round the 4 to a 5.

13.5 \ g \ Al

There are about <u>13.5 grams of aluminum</u> in 0.500 moles.

5 0
3 years ago
Read 2 more answers
Water, H2O, is classified as a(n) A) colloid. B) compound. C) element. D) mixture.
MA_775_DIABLO [31]
The answer is <span>B) compound. hope it helps~!!!!!!!!!!!!!!!!!!:)</span>
3 0
4 years ago
Read 2 more answers
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