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Alinara [238K]
3 years ago
13

What is formula of matter

Chemistry
1 answer:
lbvjy [14]3 years ago
6 0

Answer:

density = mass/volume.

Explanation:

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vlabodo [156]

Answer:

C. Pulley.

Explanation:

8 0
3 years ago
Is the gravity a black hole strong enough to keep light from escaping True or False
puteri [66]

Answer:

The gravitational pull of a black hole is so strong that nothing, not even light, can escape once it gets too close. ... Moving at close to the speed of light, these particles ricochet off the event horizon and get hurled outward along the black hole's axis of rotation

(True)

4 0
2 years ago
A student is adding DI water to a volumetric flask to make a 50% solution. Unfortunately, he was not paying attention and filled
dalvyx [7]

Answer:

His results will be skewed because there was more water than stock solution. Which would cause the percentage solution to be less than 50% therefore the density would be less than the actual value.

Explanation:

The solution will have percentage less than that of 50%. Therefore the density would be less than the actual value.

Suppose there should be 50 mL of the solution, and he added 60 mL. So 10 mL of the solution is added more.

Suppose the mass of the solute is m.

Originally, the density is = $\frac{m}{50}$     \left(\frac{\text{mass}}{\text{volume}}\right)

Now after adding extra 10 mL , the density becomes $\frac{m}{60}$.

Therefore, $\frac{m}{50}>\frac{m}{60}$

So the density decreases when we add more solution.

4 0
3 years ago
1. Oxygen<br> full electron configuration
Arada [10]

Answer:

1s^{2} 2s^{2} 2p^{4}

Explanation:

Oxygen has eight eletrons and six valence electrons, giving it the electron configuration of 1s^{2} 2s^{2} 2p^{4}.

7 0
3 years ago
Methods used to reduce sulfur dioxide emissions from smokestacks are an attempt by humans to
olga_2 [115]
The answer is (c) lessen the environmental impact of acid rain. This is because acid rain is mainly due to the <span>sulfur dioxide (and nitrogen oxides) emissions from smokestacks (and motor vehicles). Controlling the sulfur dioxide emissions would mean an attempt to lessen the environmental impact of acid rain.</span>
6 0
3 years ago
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