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3 years ago

What are the two most abundant elements in the universe

Chemistry

2 answers:

disa [49]3 years ago

5 0

Oxygen and hydrogen....Please mark brainliest...

Yuri [45]3 years ago

4 0

The two most abundant elements in the universe are HYDROGEN AND HELIUM. Hydrogen is the most abundant element followed by helium.
Hydrogen is the lightest of all element and the first element to be formed, followed by helium which has just two atoms.

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What are the branch-chain Alkanes?

snow_tiger [21]

Answer:

The top branch-chain is a Isobutane branch. And the bottom branch chain is a Neopentane branch

7 0

3 years ago

Read 2 more answers

In the Formula 3H2O what is the 3 called

vekshin1

Its very simple .

3H2O ---- three H two O

Its 3 molecules of water

3 0

3 years ago

Read 2 more answers

Please Help Me!

S_A_V [24]

Answer:

The answer to your question is SO₂ + 3H₂ ⇒ H₂S + 2H₂O

Explanation:

Reaction

SO₂ + H₂ ⇒ H₂S + H₂O

Reactants Elements Products

1 Sulfur 1

2 Hydrogen 4

2 Oxygen 1

This reaction is unbalanced so we need to balance it.

SO₂ + 3H₂ ⇒ H₂S + 2H₂O

Reactants Elements Products

1 Sulfur 1

6 Hydrogen 6

2 Oxygen 2

Now, the reaction is balanced

3 0

3 years ago

Concerning Boyle's Law, if you had a gas at a pressure of 101 kPa and decreased the volume of the container holding the gas to o

Viefleur [7K]

Answer:

$P_2=404 kPa$

Explanation:

Hello,

In this case, the Boyle's is mathematically defined via:

$P_1V_1=P_2V_2$

Which stands for an inversely proportional relationship between volume and pressure, it means the higher the volume the lower the pressure and vice versa. In such a way, since the volume is decreased to one quarter, we can write:

$V_2=\frac{1}{4} V_1$

We can compute the new pressure:

$P_2=\frac{P_1V_1}{V_2} =\frac{P_1V_1}{\frac{1}{4} V_1} =\frac{101kPa*V_1}{\frac{1}{4} V_1} \\\\P_2=4*101kPa\\\\\\P_2=404 kPa$

Which means the pressure is increased by a factor of four.

Regards.

7 0

3 years ago

What two sublevels of orbitals contain valence electrons? (s, p, d, or f)?

LuckyWell [14K]

The two sublevels are s and p. These are the main group sublevels

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3 years ago