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melisa1 [442]
3 years ago
9

Air is mainly a mixture of nitrogen and oxygen. Which gas is the main component?

Chemistry
2 answers:
NARA [144]3 years ago
8 0

Answer:

Nitrogen is the main component because it comprises 78% of total air while oxygen comprises 21%

.

Cloud [144]3 years ago
8 0

Answer:nitrogen

Explanation:

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What is the ionsphere in the layers of the atmosphere?
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Hi!

The Ionosphere, also known as the Ozone Layer, is a layer in the atmosphere that is home to Ozone gas. This layer protects earth from ultraviolet (UV) radiation.

Hope this helps :)
5 0
3 years ago
How many milliliters of 0. 0850 m naoh are required to titrate 25. 0 ml of 0. 0720 m hbr to the equivalence point?
charle [14.2K]

The volume of 0.0850 M NaOH is required to titrate 25.0 ml of 0.0720 M is 21.176 ml.

<h3>What are normality and molarity?</h3>

Normality is defined as the number of equivalents per litre of the solution

It is given by

Normality = number of equivalents / 1 L of solution

Molarity is defined as the number of moles of solute present in one litre of solution

Molarity = moles of solute / 1 litre of solution

Relationship between molarity and normality

Normality = Molarity × Acidity or Basicity of a salt

Here, the Acidity Of NaOH is 1 and the basicity of HBr is also 1.

Thus, Normality = Molarity

We know, N₁V₁ = N₂V₂

We can also write it as M₁V₁ = M₂V₂

V1 = \frac{M_2V_2}{M_!}

Substitute M₁ = 0.0850 M, M₂ = 0.0720 M, V₂= 25 ml

V1 = 21.176 ml

Hence, The volume of 0. 0850 m NaOH are required to titrate 25. 0 ml of 0. 0720 m is 21.176 ml.

Learn more about Normality and molarity:

brainly.com/question/9754178

#SPJ4

3 0
2 years ago
Read 2 more answers
In the reaction 2k + 2h2o → 2koh + h2, which compound has an element ratio of 2 : 1? h2o h2 k koh
Semenov [28]
The compound that has the element ratio 2:1 is 2H20. 
In 2H2O, four atoms of hydrogen react with two hydrogen of oxygen to form molecules of water. Four divided by two will give two, that implies ratio 2;1. This implies that, two atoms of hydrogen will react with one atom of oxygen to give a molecule of water.<span />
4 0
4 years ago
In an acidic solution
Marysya12 [62]

Explanation:

option A is the correct answer of this question

3 0
3 years ago
What is true of the electron configurations of the transition metals?
Tcecarenko [31]

Answer:

The electron configuration for the first row transition metals consists of 4s and 3d subshells with an argon (noble gas) core. This only applies to the first row transition metals, adjustments will be necessary when writing the electron configuration for the other rows of transition metals.

Explanation:

4 0
3 years ago
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