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elixir [45]
3 years ago
7

Which of the following quantities is conserved in a chemical reaction

Chemistry
1 answer:
Nezavi [6.7K]3 years ago
7 0

Answer:

In both nuclear and chemical reactions, two physical quantities are seen to be conserved and unchanging: the number of particles and the total charge. A constant number of particles in nuclear reactions does not imply that mass is conserved.

Explanation:

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How are industrial and agricultural pollution similar?
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Answer:

Both of them are polluting the environment. Industrial pollution is the pollution caused from industries and it can be in different forms such as water waster or air pollution. Agricultural pollution is caused from plants or crops that are grown by the farmers. For example, pesticides that may ruin the soil and is dangerous for our environment.

Explanation:

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What do you know about a solid’s molecules
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3 years ago
When did the level of oxygen in Earth's atmosphere become high enough to sustain aerobic respiration? When did the level of oxyg
Alexeev081 [22]

Answer:

2.4 billion years ago

Explanation:

  • The formation of the tertiary atmosphere, with the re-arrangements of the plates, took  that influenced the long term evolution of the planet that transferred the carbon dioxide to the large continental stores and the surplus oxygen came into formation about 2.4 billion years ago during the massive oxygenation event that leads to the appearance at the end of the banded iron formations.  
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7 0
3 years ago
Please help
KonstantinChe [14]

Answer:  There are 0.5 grams of barium sulfate are present in 250 of 2.0 M BaSO_{4} solution.

Explanation:

Given: Molarity of solution = 2.0 M

Volume of solution = 250 mL

Convert mL int L as follows.

1 mL = 0.001 L\\250 mL = 250 mL \times \frac{0.001 L}{1 mL}\\= 0.25 L

Molarity is the number of moles of solute present in liter of solution. Hence, molarity of the given BaSO_{4} solution is as follows.

Molarity = \frac{mass}{Volume (in L)}\\2.0 M = \frac{mass}{0.25 L}\\mass = 0.5 g

Thus, we can conclude that there are 0.5 grams of barium sulfate are present in 250 of 2.0 M BaSO_{4} solution.

7 0
3 years ago
PLX HELP ASAP
oee [108]

Answer:

B) 10.1g

Explanation:

3 0
3 years ago
Read 2 more answers
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