All categories

2 years ago

Is air a homogeneous heterogeneous mixture or substance

Chemistry

1 answer:

Olegator [25]2 years ago

5 0

Answer:

look at the explanation

Explanation:

The air that you breathe is a homogeneous mixture of oxygen, nitrogen, argon, and carbon dioxide, along with other elements in smaller amounts. Because each layer of the Earth's atmosphere has a different density, each layer of air is its own homogeneous mixture.

Hope this helps. :)

You might be interested in

Drag each quantity to the correct location on the table. Complete the table of bond energies and bond lengths. 125 pm 145 pm 167

stiv31 [10]

Answer: N-N: 145 pm and 167 KJ/mol

N=N: 125 pm, 418 KJ/mol

And N2: 110 pm , 942 KJ/mol

Explanation: Bond length is inversily proportional to bond energy.

Greater the bond length , smaller the bond energy and vice-versa.

7 0

3 years ago

A constant current of 0.350 A is passed through an electrolytic cell containing molten CrCl₂ for 21.7 h. What mass of Cr(s) is p

zhuklara [117]

An electrochemical cell can generate or use electrical energy. The mass of solid chromium that will be deposited on the electrochemical plate is 7.17 gm.

<h3>What is current?</h3>

Current in an electrochemical cell is the ratio of the quantity of electricity in columns and time in seconds.

Given,

Current (I) = 0.350 A

Time = 21.7 hours

Molar mass of chromium = 52.0 g/mol

First time is converted into seconds:

1 hour = 3600 seconds

21.7 hours = 76020 seconds

The quantity of electricity flowing in the electrochemical solution is calculated as:

$\begin{aligned} \rm Q & = \rm It\\\\& = 0.350 \times 76020 \\\\& = 26607\;\rm C \end{aligned}$

Electricity required for depositing 1 mole or 52.0 g chromium is calculated as:

In electrochemical solution, chromium chloride is dissociated as:

$\rm CrCl_{2} \rightarrow Cr^{2+} + 2 Cl^{-} \\\\\rm Cr^{2+} +2 e^{-} \rightarrow Cr$

Two moles of electrons are needed to deposit 52.0 g of chromium.

If, 1 electron = 96500 C

Then, 2 electron = 193000 C

The mass of chromium deposited is calculated as:

193000 C = 52 g chromium

So, 26607 C = $\dfrac{26607 \times 52}{193000} = 7.17 \;\rm gm$

Therefore, 7.17 gm of chromium is produced.

Learn more about an electrochemical cell here:

brainly.com/question/20355190

#SPJ1

4 0

2 years ago

What happens in a stationary front?

lions [1.4K]

Answer:

c a cold air mass and a warm air mass meet with neither moving

4 0

3 years ago

ANSWER QUICK PLEASE <br> WORTH 100 POINTS

sukhopar [10]

Answer:

Explanation:

Volume is defined as the space occupied by an object or substance irrespective of its state of matter.The conversion used from millimeter to liter is:

1 milliiliter = 0.001 L

Therefore, we can convert the volume of sample from 2.5 ml in liters as follows.

2.5 ml in liters = 2.5ml x 0.001 L/1ml

= 0.0025 L

Thus, we can conclude that the volume of given sample in liter is 0.0025 L

Hope this helps! :)

6 0

2 years ago

What is the name of a solution whose concentration of solute is equal to the maximum concentration that is predicted from the so

Alona [7]

Normally, you would call this a saturated solution.<span />

5 0

3 years ago

Is air a homogeneous heterogeneous mixture or substance￼

Is air a homogeneous heterogeneous mixture or substance