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xeze [42]
3 years ago
15

Order these clouds from highest (1) to lowest (3):

Chemistry
1 answer:
tatiyna3 years ago
5 0
Stratus clouds reside below the 6,000ft range.
Altocumulus clouds reside in the 6,500-20,000ft range.
Cirrus clouds reside above the 20,000ft range.

Ordered from highest to lowest, the sequence of clouds will be:
Cirrus
Altocumulus
Stratus
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Write the electronic configuration of the Na +, Mg2 +, Ca2 + and Rb + ions.
satela [25.4K]

Answer:

pen

Explanation:

7 0
3 years ago
Which statement is true about the gravity?
REY [17]

Answer:

B.

Explanation:

Gravity acts on all masses equally, even though the effects on both masses.

Hope it helps you! ^^



8 0
2 years ago
A sample of nitrogen gas occupies a volume of 2.55 L when it is at 755 mm Hg and 23 degrees Celsius. Use this information to det
ivolga24 [154]

<u>Answer:</u> The number of moles of nitrogen gas are 0.1043 moles and the pressure when volume and temperature has changed is 461.6 mmHg

<u>Explanation:</u>

To calculate the amount of nitrogen gas, we use the equation given by ideal gas which follows:

PV=nRT

where,

P = pressure of the gas = 755 mmHg

V = Volume of the gas = 2.55 L

T = Temperature of the gas = 23^oC=[23+273]K=296K

R = Gas constant = 62.364\text{ L.mmHg }mol^{-1}K^{-1}

n = number of moles of nitrogen gas = ?

Putting values in above equation, we get:

755mmHg\times 2.55L=n\times 62.364\text{ L.mmHg }mol^{-1}K^{-1}\times 296K\\\\n=\frac{755\times 2.55}{62.364\times 296}=0.1043mol

To calculate the pressure when temperature and volume has changed, we use the equation given by combined gas law.

The equation follows:

\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}

where,

P_1,V_1\text{ and }T_1 are the initial pressure, volume and temperature of the gas

P_2,V_2\text{ and }T_2 are the final pressure, volume and temperature of the gas

We are given:

P_1=755mmHg\\V_1=2.55mL\\T_1=23^oC=[23+273]K=296K\\P_2=?\\V_2=4.10L\\T_2=18^oC=[18+273]K=291K

Putting values in above equation, we get:

\frac{755mmHg\times 2.55L}{296K}=\frac{P_2\times 4.10L}{291K}\\\\P_2=\frac{755\times 2.55\times 291}{4.10\times 296}=461.6mmHg

Hence, the number of moles of nitrogen gas are 0.1043 moles and the pressure when volume and temperature has changed is 461.6 mmHg

6 0
3 years ago
Read 2 more answers
It is easier to determine the electron configurations for the p-block elements in periods 1, 2, and 3 than to determine the elec
andreyandreev [35.5K]

Answer:

See Explanation

Explanation:

Because you have to get through the d-block electron configurations for the rest of the p-block elements which is a hassle to do. You need to know how to account for electron stability, from which subshell to remove electrons, etc. because it is all weird for d-block.

8 0
2 years ago
The combined gas laws relates which of the following
atroni [7]

Explanation:

The ideal gas law or equation can also be reduced to the general gas law or the combined gas law.

Let us assume that n = 1;

   From PV = nRT     ideal gas law

        \frac{PV}{T} = R (constant) if n = 1

Therefore, the combined gas law is;

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

The expression is a combination of Boyle's Law and Charles's law.

learn more:

Boyle's law brainly.com/question/8928288

#learnwithBrainly

4 0
2 years ago
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