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Yakvenalex [24]
3 years ago
8

Why do you think that if you drop two balls, exactly two balls rise on the other side at a similar speed? Why doesn’t one ball f

ly off quickly instead? Why don’t three balls fly off slowly? This is a difficult question, but try your best to think about what you know and what might make sense.
Chemistry
2 answers:
sweet-ann [11.9K]3 years ago
6 0

Answer:

it is the mass of the ball i believe.

Explanation:

Fiesta28 [93]3 years ago
4 0
I think it’s the mass of the ball
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olga2289 [7]

This is genetic engineering.

I hope this helps!

Cheer,s July.

3 0
4 years ago
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If the accepted value for the mass of an object is 20.0g and the student found that the mass of the object was 20.5g what is the
NikAS [45]

Answer:

Results

The percent error between 20 and 20.5 is 2.5%

Explanation:

Percent Error = | (20.5 − 20) / 20 | × 100 = | (0.5) / 20 | × 100 = | 0.025 | × 100 = 2.5% (three decimal places)Percent Error = 2.5%

3 0
3 years ago
23. Select the evidence that Thomson used to conclude his findings.
Ilya [14]

Answer:

The answer is C

Explanation:

Thomson conducted many tests with cathode rays. Which led to his discovery of the electron.

8 0
3 years ago
During radioactive decay, atomic nuclei of unstable isotopes
Troyanec [42]
I think its A. because there are nuclear fusion and nuclear fission
5 0
4 years ago
Monochloroacetic acid (HC2H2ClO2) is a skin irritant that is used in "chemical peels" intended to remove the top layer of dead s
yaroslaw [1]

<u>Answer:</u> The pH of the solution is 1.703

<u>Explanation:</u>

We are given:

Concentration of monochloroacetic acid = 0.31 M

The chemical equation for the dissociation of monochloroacetic acid follows:

                  HC_2H_2ClO_2\rightleftharpoons H^++C_2H_2ClO_2^-

<u>Initial:</u>               0.31

<u>At eqllm:</u>        0.31-x             x            x

The expression of K_a for above equation follows:

K_a=\frac{[H^+][C_2H_2ClO_2^-}}{[HC_2H_2ClO_2]}

We are given:

K_a=1.35\times 10^{-3}

Putting values in above equation follows:

1.35\times 10^{-3}=\frac{x\times x}{(0.31-x)}\\\\x=-0.021,0.0198

Neglecting the negative value of 'x' because concentration cannot be negative.

To calculate the pH of the solution, we use the equation:

pH=-\log[H^+]

pH=-\log (0.0198)\\\\pH=1.703

Hence, the pH of the solution is 1.703

5 0
4 years ago
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