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ryzh [129]
2 years ago
15

According to the Energy Information Administration (EIA), oil accounts for what percentage of the U.S. energy mix?

Chemistry
1 answer:
stich3 [128]2 years ago
7 0

Answer: answer is b 29%

Explanation:

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Matter doesn't have to take up space as long as it has mass.
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Answer:

Matter always takes space (or has volume).

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3 years ago
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Why is it difficult to accurately represent ammonia and methane on paper?
andrew-mc [135]

Answer:

The correct answer is because the molecular structure.

Explanation:

The difficulty of ammonia and methane to be represented on paper is due to the molecular structure. These compounds have a three-dimensional projection with defined angles. Ammonia presents angles of 109.5º between the atom of Nitrogen and those of Oxygen. The ammonia presents 107.8º between the oxygen atoms.

In the methane molecule, there is 109.5º between the hydrogen molecules and the carbon atom. This results in the need for a 3D representation of the molecule.

Have a nice day!

6 0
3 years ago
What would happen to the moon’s interia were to increase? A the moon will fly into space. B the moon will smash into Earth. C th
Montano1993 [528]

Answer:

B

Explanation:

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3 years ago
I would be so grateful if someone helped me with my lab report. My lab report is about identifying unknown solids.
kipiarov [429]

Answer:

good afternoon

Explanation:

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3 0
2 years ago
13. How many moles of sodium hydroxide are needed to neutralize 50grams of sulfuric acid?
Phoenix [80]

Answer:

1.02mole

Explanation:

The reaction equation is given as:

     2NaOH  +  H₂SO₄ →  Na₂SO₄  + 2H₂O

Given:

Mass of H₂SO₄  = 50g

Unknown:

Number of moles of NaOH = ?

Solution:

To solve this problem, we first find the number of moles of the acid given;

  Number of moles  = \frac{mass}{molar mass}

Molar mass of H₂SO₄ = 2(1) + 32 + 4(16)  = 98g/mol

Now;

   Number of moles = \frac{50}{98}   = 0.51mole

From the balanced reaction equation:

       1 mole of H₂SO₄ will be neutralized by 2 mole of NaOH

     0.51 mole of H₂SO₄ will be neutralized by 2 x 0.51  = 1.02mole of NaOH

6 0
2 years ago
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