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IrinaVladis [17]
3 years ago
15

Why can't astronomers take a picture of a black hole?

Chemistry
2 answers:
Yakvenalex [24]3 years ago
7 0

Answer:

a

Explanation:

san4es73 [151]3 years ago
5 0

Answer:

Gravity is so strong that even light cannot escape a black hole.

Explanation:

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Which of the following is a consequence of humans using fossil fuels
marusya05 [52]

Answer:

Explanation:

Following are a few consequences of fossil fuels

1. It causes air pollution.

2. When they are burned, they produce toxic substances which leads to global warming.

3. Waste products are hazardous to public health and environment.

4. They are non - renewable and unsustainable.

5. Drilling fossil fuels is a dangerous process

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3 years ago
What was a major accomplishment of the Apollo mission
denpristay [2]
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The <span>major accomplishment of the Apollo missions was to successfully land Americans on the Moon and to return them safely to Earth. One major reason for this was to establish a way for us to travel to other celestial bodies safely so we could research them and study how they work or to see if they are inhabitable.

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3 years ago
What does the mass number of an atom represent?.
mamaluj [8]

Answer:

the sum of the numbers of protons and neutrons present in the nucleus of an atom.

8 0
2 years ago
I need an answer now please asap and you will me marked brainiest please it's missing I need it now.
BaLLatris [955]
I really hope this helps I’ve been there too and I’m just doing this so I get the 20 words and I have the picture

8 0
3 years ago
If 185 mg of acetaminophen were obtained from a tablet containing 350 mg of acetamino- phen, what would be the weight percentage
Alex73 [517]

Percentage recovery gives us an idea of the amount of pure substance recovered after the chemical reaction. Percentage recovery can be more than 100 % or less than 100 %. Usually, in any experiment performed the weight percentage recovery will be less than 100. Percent recovery values greater than 100 show that the recovered compound is contaminated.

Amount of acetaminophen initially taken = 350 mg

Amount of acetaminophen obtained after recovery =185 mg

Weight percentage recovery =\frac{mass recovered}{mass originally taken}*100

                                                = \frac{185 mg}{350 mg}*100

                                               = 52.9%

8 0
3 years ago
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