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3 years ago

What are the 3 body systems that process the molecules from the food we eat and the air we breathe?

Chemistry

1 answer:

Ludmilka [50]3 years ago

4 0

Answer:

respiratory, digestive and circulatory system

Explanation:

the respiratory system brings oxygen into the lungs when you breathe. the digestive system breaks food down into nutrients such as glucose. the circulatory system transports glucose and other nutrients from the digestive system to the cells.

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2. Hydrocarbons consist of carbon and hydrogen. 5.7 g of a hydrocarbon contains 4.8 g of carbon.

zaharov [31]

Answer:

The molecular formula of the hydrocarbon compound is C₈H₁₈

Explanation:

The type of chemical substance in the question = Hydrocarbon

The mass of the hydrocarbon = 5.7 g

The mass of carbon in the given hydrocarbon (sample) = 4.8 g

The relative molecular mas of the hydrocarbon = 114 g

Therefore, the mass of hydrogen in the sample, H = 5.7 g - 4.8 g = 0.9 g

The ratio of the mass of carbon in the sample = 4.8/5.7

The ratio of the mass of hydrogen in the sample = 0.9/5.7

By the law of constant composition, we have;

The mass of carbon in a mole of the hydrocarbon = (4.8/5.7) × 114 g = 96 g

The molar mass of carbon, C = 12 g/mol

The number of moles of carbon in a mole of the hydrocarbon, 'n₁', is given as follows;

n₁ = 96 g/12 g = 8 moles

The mass of hydrogen in a mole of the hydrocarbon = (0.9/5.7) × 114 g = 18 g

The molar mass of hydrogen, H ≈ 1 g/mol

The number of moles of hydrogen in a mole of the hydrocarbon, 'n₂', is given as follows;

n₂ = 48 g/1 g = 18 moles

Therefore, in each each molecule of the compound, we have have 8 atoms of carbon, 'C', and 18 atoms of hydrogen, 'H'

Therefore, we get;

The molecular formula of the hydrocarbon compound is C₈H₁₈ which is the chemical formula for the hydrocarbon also known as octane

7 0

3 years ago

What is the result of multiplying

vlabodo [156]

Answer:

i believe it's C

Explanation:

the result of multiplying (2.5 * 1010) and (3.5 x 10-7) is 8.8.10^3

5 0

2 years ago

“Fine sediment buries the organism, and pressure eventually squeezes out the liquid and gas parts of the remains, leaving only a

wlad13 [49]

Decomposition I believe. hope this helps

4 0

3 years ago

1.The movement of particles from a less crowded area to a more crowded area requires

Harrizon [31]

1. Energy as particles can't move without kinetic (movement) energy
2. I think it's Diffusion and Active Transport

7 0

4 years ago

How many electrons in an atom can have each of the following quantum number or sublevel designations?

storchak [24]

10 electrons in an atom can have each of the 3d quantum number or sublevel designations.

<h3>What are four quantum numbers?</h3>

Quantum numbers are used to characterize the values of conserved quantities in a quantum system's dynamics in both quantum physics and chemistry.

1) The "n" sign refers to the principal quantum number. It shows how many shells there are.

2) The "l" sign indicates the azimuthal quantum number. It gives the form of the orbitals and their angular momentum. 0 to n-1 make up its range.

3) " $m_{l}$ " stands for the magnetic quantum number. It serves as a cue for spatial orientation. The range of it is -l to +l.

4) Spin quantum number, represented by the symbol " $m_{s}$ ". It shows how the electron is spinning.

Learn more about quantum numbers here:

brainly.com/question/14288557

#SPJ4

4 0

2 years ago