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3 years ago

Which statements describe Earth's continents? Check all that apply.

Chemistry

1 answer:

kari74 [83]3 years ago

8 0

Answer:

A continent is a large distinct landmass.

There are seven continents on Earth.

Continents cover two-thirds of Earth’s surface.

Explanation:

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WILL MARK B!

melisa1 [442]

Answer:

Bro don't cheat in online exams bro

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3 years ago

24. A sports ball is inflated to an internal pressure of 1.85 atm at room temperature (25 °C). If the ball is then played with o

baherus [9]

Answer: The correct answer is Option B.

Explanation:

To calculate the final pressure of the system, we use the equation given by Gay-Lussac Law. This law states that pressure of the gas is directly proportional to the temperature of the gas at constant volume.

Mathematically,

$\frac{P_1}{T_1}=\frac{P_2}{T_2}$ (at constant volume)

where,

$P_1\text{ and }T_1$ are the initial pressure and temperature of the gas.

$P_2\text{ and }T_2$ are the final pressure and temperature of the gas.

We are given:

Conversion factor: $T(K)=T(^oC)+273$

$P_1=1.85atm\\T_1=25^oC=(25+273)K=298K\\P_2=?atm\\T_2=7.5^oC=(7.5+273)K=280.5$

Putting values in above equation, we get:

$\frac{1.85atm}{298K}=\frac{P_2}{280.5K}\\\\P_2=1.74atm$

Hence, the correct answer is Option B.

6 0

3 years ago

zimovet [89]

Answer:

B. False

Explanation:

step by step explanation

6 0

3 years ago

Read 2 more answers

88.5 mol of P4O10 contains how many moles of P?

ra1l [238]

This problem can be solved directly using stoichiometry. We can actually see that for every mol of P4O10, there are 4 moles of P. Therefore the total moles of P is:

moles P = 88.5 moles P4O10 * (4 moles P / 1 mole P4O10)

moles P = 354 moles P

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4 years ago

Read 2 more answers

What is a good essential question for the subject molecular compounds

Mashutka [201]

Why do molecules combined into chains?

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3 years ago