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Andre45 [30]
3 years ago
11

Nebulae are enormous clouds in outer space.they are made mostly of hydrogen gas ,helium gas and dust , some nubelae glow brightl

y while others do not .the stars that people see are huge , bright balls of glowing gas . They are made mostly of hydrogen and helium , which statement correctly describes other ways in which nubelae and stars are different
Chemistry
1 answer:
adell [148]3 years ago
3 0
They’re different in regards to the fact that nebulae are not actively burning while stars are
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ANSWER ASAP PLEASE!<br> Balance the following equation:<br> _Fe + _O₂ --&gt; _FeO₃
ira [324]
It would be. 2Fe + 3O2 ——> 2Fe03. You have to make oxygen 6 on both sides in order to balance, then you can do Fe. Which on the right would be 2 by making oxygen 6. Then add the 2 to the other side to balance it.
8 0
3 years ago
Determine the molar solubility of AgBr in a solution containing 0.150 M NaBr. Ksp (AgBr) = 7.7 Ă— 10-13. Determine the molar sol
Kaylis [27]

Hey there!:

Given the reaction:

 NaBr  ⇌  Na⁺ +  Br⁻

  ↓              ↓         ↓

0.150M      0.150M     0.150M


AgBr ⇌ Ag⁺   + Br⁻

 ↓            ↓          ↓

 x            x         0.150M


Therefore:

Ksp = x * 0.150

x = ( 7.7 * 10⁻¹³ ) / 0.150

x = 5.1 * 10⁻¹²


Answer B


Hope that helps!

5 0
3 years ago
How would oxygen be represented in the formula equation for the reaction of methane and oxygen to yield carbon dioxide and water
Lera25 [3.4K]

Answer:

CH4(g) + 2O2(g) → CO2(g) + 2H2O(g)

Explanation:

CH4(g) + 2O2(g) → CO2(g) + 2H2O(g)

Methane + oxygen → carbon dioxide + Water.

The balanced equation above shows the combustion of methane, CH4 in oxygen, O2 to yield carbon dioxide, CO2 and steam, H2O.

The mole ratio of combustion are as follows:

1 mole of CH4 burns in 2 moles of oxygen to produce 1 mole of CO2 and 2 moles of H2O and a lot of heat.

6 0
3 years ago
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timurjin [86]

Answer:

1 L

Explanation:

V1=P2V2/P1

Checking this, it is correct because P and V at constant T has an inverse relationship.

- Hope that helps! Please let me know if you need further explanation.

4 0
3 years ago
Complete the following sentences: 1. The phase change in which a substance changes from a liquid to a gas is ______.
DanielleElmas [232]
1. <span>The phase change in which a substance changes from a liquid to a gas is condensation. The correct option among all the options given is option "c".

2. </span>The phase change in which a substance changes from a solid to a liquid is melting. The correct option among all the options given is option "b".

3. The phase change in which a substance changes from a solid to a gas or vapor without changing to a liquid first is sublimation. The correct option is option "a".
6 0
3 years ago
Read 2 more answers
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