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Stella [2.4K]
3 years ago
5

Oxygen gas is esential for living beings why​

Chemistry
2 answers:
Darina [25.2K]3 years ago
8 0
Oxygen plays a critical role in respiration, the energy-producing chemistry that drives the metabolisms of most living things. We humans, along with many other creatures, need oxygen in the air we breathe to stay alive. Oxygen is generated during photosynthesis by plants and many types of microbes.
ludmilkaskok [199]3 years ago
8 0

Answer:

to turn food into energy

your brain need a lot of oxygen

play an important role in your immune system

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Which statement below is the BEST explanation for the differences
IgorC [24]

Answer:

A

Explanation:

Electron geometry describes the arrangement of electron groups. Molecular geometry describes the arrangement of atoms, excluding lone pairs.

7 0
3 years ago
Find [H+] of a 0.056 M hydrofluoric acid solution. Ka = 1.45 x 10-7
brilliants [131]

Answer:  [H^+] of 0.056 M HF solution is 8.96\times 10^{-5}

Explanation:

HF\rightarrow H^+F^-

 cM              0             0

c-c\alpha        c\alpha          c\alpha  

So dissociation constant will be:

K_a=\frac{(c\alpha)^{2}}{c-c\alpha}

Give c= 0.056 M and \alpha = ?

K_a=1.45\times 10^{-7}

Putting in the values we get:

1.45\times 10^{-7}=\frac{(0.056\times \alpha)^2}{(0.056-0.056\times \alpha)}

(\alpha)=0.0016

[H^+]=c\times \alpha

[H^+]=0.056\times 0.0016=8.96\times 10^{-5}  

Thus [H^+] of 0.056 M HF solution is 8.96\times 10^{-5}

8 0
3 years ago
When ionic solids dissolve in water, they produce soluble aqueous cations and anions. For example, adding MgBr2 solids to water
worty [1.4K]

Answer:

Al(NO3)3(s)--------> Al^3+(aq) + 3NO3^-(aq)

Explanation:

The equation shown above describes the dissolution of Al(NO3)3 in water using the lowest coefficients.

This occurs when solid Al(NO3)3 is added to water. It dissolves to give rise to ions as shown. This is a property of all ionic substances.

6 0
3 years ago
Which of these safety features aims to keep nuclear radiation contained
rewona [7]

The safety feature aimed at keeping nuclear radiation contained is steel-reinforced concrete.

<h3>What is nuclear power plant?</h3>

A nuclear power plant is a building with reactors that contain controlled nuclear reactions to produce energy.

Nuclear power plants are able to generate warm water by using atomic properties of matter  (i.e.,m the process of nuclear fission), which is in turn converted into steam to move turbines.

The walls of nuclear power reactors are composed of steel-reinforced concrete in order to avoid radiation release.

In conclusion, the safety standard property that maintains nuclear radiation contained is steel-reinforced concrete.

Learn more about nuclear power plants here:

brainly.com/question/24295936

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4 0
2 years ago
What is density? How do you find it?
Assoli18 [71]

Density is the measure of a mass per unit volume of a material substance

density= Mass/volume

The unit of density is g/cm^3

5 0
2 years ago
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