2 years ago

The dark areas on the world map show places with climates that are alike. The table shows information for those places. A

Chemistry

1 answer:

vlabodo [156]2 years ago

6 0

Answer:

Choice B

They are polar climates because they are dry

and cold

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Determine the volume, in liters, occupied by 0.015 molecules of oxygen at STp?

Arlecino [84]

5.58 X $10^{-25}$ Litres is the volume, in liters, occupied by 0.015 molecules of oxygen at STP.

Explanation:

Data given:

molecules of oxygen = 0.015

number of moles of oxygen =?

temperature at STP = 273 K

Pressure at STP = 1 atm

volume = ?

R (gas constant) = 0.08201 L atm/mole K

to convert molecules to moles,

number of moles = $\frac{molecules}{Avagadro's number}$

number of moles = 2.49 x $10^{-26}$

Applying the ideal gas law since the oxygen is at STP,

PV = nRT

rearranging the equation:

V = $\frac{nRT}{P}$

putting the values in the rearranged equation:

V = $\frac{2.49 X10^{-26} X 0.08201 X 273}{1}$

V = 5.58 X $10^{-25}$ Litres.

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3 years ago

The positively charged particles found in the nucleus of an atom are called ______.

Vikentia [17]

The answer is (c) protons

4 0

3 years ago

I really need help please

Greeley [361]

Answer:

I think it's B

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3 years ago

) Calculate the number of moles of sulfuric acid that is contained in 250 mL of 0.500 M sulfuric acid solution

maksim [4K]

Explanation:

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0.500M × (250/1000)L= 0.125moles.

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3 years ago

2. _____ is the distance and direction of an object’s change in position from the starting a. Speed b. Displacement c. Ve

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Displacement is the distance and direction of an object's change in position from the starting.
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