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diamong [38]
3 years ago
7

What happens in cellular respiration?

Chemistry
2 answers:
Paha777 [63]3 years ago
8 0

Answer:

Option B

Explanation:

The reaction can be summarized as

6O2+C6H12O6——›6CO2+6H2O+Heat

fomenos3 years ago
3 0

Answer:

B

Explanation:

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How many grams are in 4.8 moles of Sulfur?
Ainat [17]
153.888 grams are in 4.8 moles of sulfur
5 0
4 years ago
Which of the following best describes an alkali?
julia-pushkina [17]

Answer:

A. Any substance with a pH above 7.

Explanation:

On the pH scale substances whose value is greater than 7 and less than 14 are termed alkali.

Acids have  a pH of less than 7 whereas neutral compounds such as water has pH of 7.

  • An alkali is any substance that produces excess hydroxyl ion in solutions.
  • Water soluble bases are known as alkali.
  • They are usually certain metallic oxides, metallic hydroxides and aqueous ammonia.
7 0
3 years ago
Read 2 more answers
The following reaction shows the products when sulfuric acid and aluminum hydroxide react.
scoray [572]

Leftover: approximately 11.73 g of sulfuric acid.

<h3>Explanation</h3>

Which reactant is <em>in excess</em>?

The theoretical yield of water from Al(OH)₃ is lower than that from H₂SO₄. As a  result,

  • Al(OH)₃ is the limiting reactant.
  • H₂SO₄ is in excess.

How many <em>moles</em> of H₂SO₄ is consumed?

Balanced equation:

2 Al(OH)₃ + 3 H₂SO₄ → Al₂(SO₄)₃ + 6 H₂O

Each mole of Al(OH)₃ corresponds to 3/2 moles of H₂SO4. The formula mass of Al(OH)₃ is 78.003 g/mol. There are 15 / 78.003 = 0.19230 moles of Al(OH)₃ in the five grams of Al(OH)₃ available. Al(OH)₃ is in excess, meaning that all 0.19230 moles will be consumed. Accordingly, 0.19230 × 3/2 = 0.28845 moles of H₂SO₄ will be consumed.

How many <em>grams</em> of H₂SO₄ is consumed?

The molar mass of H₂SO₄ is 98.076 g.mol. The mass of 0.28845 moles of H₂SO₄ is 0.28845 × 98.076 = 28.289 g.

How many <em>grams</em> of H₂SO₄ is in excess?

40 grams of sulfuric acid H₂SO₄ is available. 28.289 grams is consumed. The remaining 40 - 28.289 = 11.711 g is in excess. That's closest to the first option: 11.73 g of sulfuric acid.

6 0
3 years ago
Describe one advantage and one disadvantage of replacing standard bulbs with led lighting
Leno4ka [110]
Advantages

less wasted energy

Reduces fossilisation

Disadvantages

- Expensive

- doesn't look nice ( apparently)



7 0
3 years ago
What is the molarity of a solution of hf if 4.400 moles of hf are added to a container and filled with water to a final volume o
Natasha2012 [34]

Answer is: the molarity of a solution of HF is 0.73 M.

n(HF) = 4.400 mol; amount of hydrofluoric acid.

V(HF) = 6.00 l; volume of hydrofluoric acid.

c(HF) = n(HF) ÷ V(HF).

c(HF) = 4.400 mol ÷ 6.00 l.

c(HF) = 0.733 mol/l; molarity of a solution (hydrofluoric acid).

6 0
3 years ago
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