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3 years ago

Which of the following statements is true about cellular respiration?

2 answers:

8 0

Which of the following statements is true about cellular respiration?
1. I believe the answer is It breaks down food to release energy.

Cellular respiration is a chemical reaction that turns food into energy. The food that mostly used by the organism is carbohydrate. The breakdown of carbohydrate needs oxygen to maximize energy produced. Cellular respiration will create carbon dioxide and water as the side product. Photosynthesis and respiration happen in the living organism.

2. The answer is Diffusion

The question is asking the movement of carbon molecule between seawater(liquid) and air(gas). Gas like carbon dioxide or oxygen can move from the water into the air by diffusion. This allows the seawater organism to utilize oxygen and carbon that vital for its life.

Serjik [45]3 years ago

3 0

DIFFUSION IS WRONG

i just took the test and got it wrong

You might be interested in

A chemist must dilute 97.1 ml of aqueous magnesium fluoride solution until the concentration falls to 389 microMolarity . He'll

mojhsa [17]

Answer:

0.302L

Explanation:

...97.1mL of 1.21m M aqueous magnesium fluoride solution

In this problem the chemist is disolving a solution from 1.21mM = 1.21x10⁻³M, to 389μM = 389x10⁻⁶M. That means the solution must be diluted:

1.21x10⁻³M / 389x10⁻⁶M = 3.11 times

As the initial volume of the original concentration is 97.1mL, the final volume must be:

97.1mL * 3.11 = 302.0mL =

0.302L

6 0

3 years ago

Liquid hexane

maks197457 [2]

Answer: The mass of $H_2O$ produced is 2.52 g

Explanation:

The number of moles is defined as the ratio of the mass of a substance to its molar mass. The equation used is:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$ ......(1)

For hexane:

Given mass of hexane = 1.72 g

Molar mass of hexane = 86.18 g/mol

Putting values in equation 1, we get:

$\text{Moles of hexane}=\frac{1.72g}{86.18g/mol}=0.020mol$

For oxygen gas:

Given mass of oxygen gas = 8.0 g

Molar mass of oxygen gas= 32 g/mol

Putting values in equation 1, we get:

$\text{Moles of water}=\frac{8.0g}{32g/mol}=0.25mol$

The chemical equation for the combustion of hexane follows:

$2C_6H_{14}+19O_2\rightarrow 12CO_2+14H_2O$

By stoichiometry of the reaction:

If 2 moles of hexane reacts with 19 moles of oxygen gas

So, 0.020 moles of hexane will react with = $\frac{19}{2}\times 0.020=0.19mol$ of oxygen gas

As the given amount of oxygen gas is more than the required amount. Thus, it is present in excess and is considered as an excess reagent.

Thus, hexane is considered a limiting reagent because it limits the formation of the product.

By the stoichiometry of the reaction:

If 2 moles of hexane produces 14 moles of $H_2O$

So, 0.020 moles of hexane will produce = $\frac{14}{2}\times 0.020=0.14mol$ of $H_2O$

We know, molar mass of $H_2O$ = 18 g/mol

Putting values in above equation, we get:

$\text{Mass of }H_2O=(0.14mol\times 18g/mol)=2.52g$

Hence, the mass of $H_2O$ produced is 2.52 g

4 0

3 years ago

What is the net ionic equation for the reaction ofFeCl3 and KOH in water?

Levart [38]

Answer:

Fe³⁺(aq) + 3 OH⁻(aq) → Fe(OH)₃(s)

Explanation:

First, we will write the molecular equation because it is the easiest to balance.

FeCl₃(aq) + 3 KOH(aq) → Fe(OH)₃(s) + 3 KCl(aq)

The full ionic equation includes all the ions and the molecular species.

Fe³⁺(aq) + 3 Cl⁻(aq) + 3 K⁺(aq) + 3 OH⁻(aq) → Fe(OH)₃(s) + 3 K⁺(aq) + 3 Cl⁻(aq)

The net ionic equation includes only the ions that participate in the reaction and the molecular species.

Fe³⁺(aq) + 3 OH⁻(aq) → Fe(OH)₃(s)

8 0

3 years ago

.help!!! due today!!! what is happening and how it is demonstrating Newton’s 1st law. make sure you describe inertia and how it

PilotLPTM [1.2K]

Inertia is making the penny keep doing what it is doing so staying the same and if you remove the card then the penny will drop

5 0

3 years ago

How many electrons are orbit the nucleus of an atom with an atomic number of 60?

Sergio039 [100]

Neodymium is a chemical element with symbol Nd and atomic number 60.

7 0

3 years ago