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Leviafan [203]
3 years ago
15

A boy who weighs 30 kg is skateboarding at a speed of 5 m/s. What is the boys kinetic energy?

Chemistry
1 answer:
Assoli18 [71]3 years ago
6 0

the answer is 375 joules

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What effect does the anion of an ionic compound have on the appearance of the solution?
choli [55]

Answer: B. The anion affects the color of the solution more than the intensity of the color.

Explanation:

An ionic bond is gotten when an electron is transferred from a metal atom to a non-metal one. It should be noted that the ionic bonds simply has an anion and a cation.

An anion is formed when a valence election is gained by a non metal while a cation is formed when the metal ion misplaces a valence electron.

The effect of the anion of an ionic compound on the appearance of the solution is that the anion affects the color of the solution more than the intensity of the color.

6 0
3 years ago
Is a flashlight turned on kinetic or potential energy ?
kompoz [17]
Answer: potential energy













8 0
3 years ago
Measurements show that unknown compound X has the following composition: element mass % carbon 41.0% hydrogen 4.58% oxygen 54.6%
anastassius [24]

Answer:

CHO

Explanation:

Carbon = 41%,  Hydrogen = 4.58%, oxygen = 54.6%

Step 1:

Divide through by their respective relative atomic masses

41/ 12,         4.58/1,         54.6/16

3.41              4.58            3.41

Step 2:

Divide by the lowest ratio:

3.41/3.41,      4.58/3.41,     3.41/3.41

1,                    1,                  1

Hence the empirical formula is CHO

8 0
3 years ago
density of a sample of tin is 8 g/'ll when the actual density was 7.28 g/ml. what was the percentage error
riadik2000 [5.3K]

9.9%

|Approximate Value − Exact Value| divided by

|Exact Value| X 100

7 0
3 years ago
A student places a beaker on a hot plate. To the beaker, he adds a clear liquid and a white powder. The mixture instantly begins
Elenna [48]
True, because if it wasn't a chemical reaction it would have proceeded to stay the same. but it begins to bubble.
sorry if this isn't the best answer I'm trying my best.
7 0
4 years ago
Read 2 more answers
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