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3 years ago

Enter the number of electrons in each energy level (shell) for each of the elements. If the energy level does not contain any

Chemistry

1 answer:

kondor19780726 [428]3 years ago

4 0

Answer:

ne=1s2,2s2,2p6,

ar=1s2,2s2,2p6,3s2,3p6

ca=1s2,2s2,2p6,3s2,3p6,4s2

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The atmosphere protects us from all of the following except (4 points)

denis-greek [22]

Global warming, Cosmic Background radiation (even though most is blocked not ALL), and pollution.

8 0

4 years ago

Chlorofluorocarbons such as CCl2F and CCI,F, have been linked to ozone depletion in Antarctica. In 1994, these gases were found

Ilya [14]

Answer:

a) molarity of CCl3F = 1.12 × 10^-11 mol/dm³

Molarity of CCl2F2 = 2.20 × 10^-11 mol/dm³

B) molarity of CCL3F = 7.96 × 10 ^-13 mol/dm³

Molarity of CCl2F2 = 1.55 × 10^-12 mol/dm³

Explanation:

Using the ideal gas equation:

PV = nRT

Further explanations are found in the attachment below.

4 0

4 years ago

Is garlic powder a pure substance

CaHeK987 [17]

Answer: most store-bought isnt

Explanation:

there typically a lot of addivitves

8 0

3 years ago

How could you use two beakers distilled water two hot plates two thermometers and salt to test if adding salt affects the boilin

ICE Princess25 [194]

You are given two beakers, distilled water, two hot plates, two thermometers and salt. These materials are enough in order to test the effect of salt in the boiling point water. To do this, you set up two beakers. In one of the beakers, you add pure distilled water and nothing else. For the other beaker, you put a solution of salt and water. You place these beakers on separate hot plates and place inside the beakers the thermometers. You heat these substances until they boil and then you measure the boiling points of the substances. You would observe that the boiling point of the solution would have a higher boiling point than the pure liquid.

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4 years ago

Which of the following conditions must be met for a volume ratio to be created from a balanced chemical equation?

Gnesinka [82]

Answer: Option (b) is the correct answer.

Explanation:

According to ideal gas law, the product of pressure and volume is equal to the product of number of moles, gas constant and temperature.

Mathematically, PV = nRT

So, when there are two gases with equal number of moles behaving ideally then the ideal gas equation will be as follows.

$\frac{P_{1}V_{1}}{T_{1}}$ = $\frac{P_{2}V_{2}}{T_{2}}$

and $\frac{V_{1}}{V_{2}}$ = $\frac{P_{2}T_{1}}{P_{1}T_{2}}$

Hence, when temperature and pressure of both the gases will be constant then $\frac{V_{1}}{V_{2}}$ = 1.

Thus, we can conclude that constant temperature and pressure is the conditions that must be met for a volume ratio to be created from a balanced chemical equation.

4 0

3 years ago

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