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3 years ago

13

Looking at page 14 of the earth science tables, how does the temperature change as a balloon rises through the Troposphere Strat

osphere and Mesosphere?
Increase, decreases, increases again

Decreases, increases, decreases again

Increases

Decreases

1 answer:

givi [52]3 years ago

5 0

Answer:

Decreases

Explanation:

The temperature decreases when latitude increases.

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Which TWO of the following options are TRUE about atomic mass and mass number?

Citrus2011 [14]

Answer:

E - Atomic mass is calculated by weighted atomic average using all the isotope data available.

G - Mass number is equal to the sum of protons and electrons in an atom.

Explanation:

Take an element

$\\ \bull\sf\longmapsto _{25}Mg^{12}$

Mass no is 25 and atomic no is 12.

7 0

3 years ago

Convert 7.89 x 10^8 molecules of water to liters.

NNADVOKAT [17]

Answer:

2.94 x 10⁻¹⁴L

Explanation:

To solve this problem, we have to assume that the condition of this water is at standard temperature and pressure, STP.

At STP;

1 mole of gas have a volume of 22.4L

So, let us find the number of moles of this water first;

6.02 x 10²³ molecules can be found in 1 mole of a substance

7.89 x 10⁸ molecules will contain $\frac{7.89 x 10^{8} }{6.02 x 10^{23} }$ = 1.31 x 10⁻¹⁵mole of water

So;

Volume of water = 22.4 x 1.31 x 10⁻¹⁵ = 2.94 x 10⁻¹⁴L

5 0

3 years ago

What is the total pressure in atmospheres in a 10.0L vessel containing 2.50 x 10-3 mol H2, 1.00 x 10-3

grigory [225]

Answer:

Total pressure = 16.42× 10⁻⁹atm

Explanation:

Given data:

Moles of H₂ = 2.50 × 10⁻³ mol

Moles of He = 1.00 × 10⁻³ mol

Mass of Ne = 3 × 10⁻⁴ mol

Volume = 10 L

Temperature = 35°C

Total pressure = ?

Solution:

Pressure of hydrogen:

P = nRT / V

P = 2.50 × 10⁻³ mol× 0.0821 atm. L.mol⁻¹ .k⁻¹ × 308 K / 10 L

p = 63.22× 10⁻³ atm. L /10 L

P = 6.3 × 10⁻³atm

Pressure of helium:

P = nRT / V

P = 1.00 × 10⁻³ mol× 0.0821 atm. L.mol⁻¹ .k⁻¹ × 308 K / 10 L

p = 25.29 × 10⁻³ atm. L /10 L

P = 2.53× 10⁻³ atm

Pressure of neon:

P = nRT / V

P = 3 × 10⁻⁴ mol× 0.0821 atm. L.mol⁻¹ .k⁻¹ × 308 K / 10 L

p = 75.86× 10⁻³ atm. L /10 L

P = 7.59× 10⁻³ atm

Total pressure of mixture:

P(mixture) = pressure of hydrogen + pressure of helium+ pressure of neon

P(mixture) = 6.3 × 10⁻³atm + 2.53× 10⁻³ atm + 7.59× 10⁻³ atm

P(mixture) = 16.42× 10⁻⁹atm

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3 years ago

PLEASE HELP!! What happens when nitrogen fills its valence shell?

Sidana [21]

I think the answer is that three electrons are gained, creating N-3

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3 years ago

Read 2 more answers

Pressure of the liquid depends upon the height of the liquid column.

Mandarinka [93]

Answer:

The statement is true.

Explanation:

&he pressure exerted by a liquid depends on the height of the liquid column. Where h is height and ρ is density. As the height increases, pressure will also increase.

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3 years ago