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ipn [44]
2 years ago
14

Burning something is always a chemical change that requires a fuel and

Chemistry
2 answers:
Misha Larkins [42]2 years ago
8 0
C . oxygen
i had this the other day
mrs_skeptik [129]2 years ago
7 0

Answer:

C

Explanation:

Oxygen is required in combustion because it's plays a reactive role in the process.

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Hydrolamine ,NH2OH , is a reducing agent found in some film developing solutions. How many hydrogen atoms are in 1.80moles of hy
kolezko [41]

Answer:

number of hydrogen atom in 1.8 mole of NH2OH = 9.8\times 10^{22}

Explanation:

percentage of hydrogen in NH2OH = mass of hydrogen / mass of whole molecule

                                                             =\frac{3\times 1}{14+3+16}\times 100

                                                             = 9.09 percentage

therefore number of moles in 1.8 moles of hydroxy amine = \frac{9.09}{100}\times 1.8

                                                                = .16 moles of hydrogen

number of hydrogen atom = (number of moles )×(avagadro number)

                                              = 9.8\times 10^{22} atoms of hydrogen

3 0
3 years ago
Where in the lungs does gas exchange occur
Lina20 [59]

Answer: Between the alveoli and a network of tiny blood vessels called capillaries, which are located in the walls of the alveoli.

7 0
3 years ago
If the pH changes from 5 to 6, the H+ would concentration would?
Strike441 [17]
Decrease by factor 10
5 0
3 years ago
Which is the correct empirical formula for C6H1206?
Bas_tet [7]

Explanation:

the correct empirical formula for C6H12O6 is CH2O...

hope it will help....

8 0
3 years ago
How do invertebrates affect the oxygen levels of compost and soil?.
Digiron [165]

Invertebrates affect the oxygen levels of compost and soil by reducing it.

<h3>How respiration works?</h3>

Cellular respiration is the process by which living organisms obtain energy by breaking down food molecules in their cells.

Every living organism undergoes the process of cellular respiration and make use of oxygen molecules in the process.

This means that invertebrates will make use of the oxygen gas present in compost and the soil for respiration, hereby reducing it.

Learn more about respiration at: brainly.com/question/480297

8 0
2 years ago
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