3 years ago

Question 2 (0.5 points)

1 answer:

4 0

MARITIME POLAR - cold and dry humid
MARITIME TROPICAL - warm and humid.
CONTINENTAL - Warm and humid.
ARTIC AIR - Extremely cold and dry.
MARITIME - Of or related to the sea.

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A gas with an empirical formula C2H2O has a molecular weight of 120.6g/mol. A possible molecular formula for the gas is

Virty [35]

M(C2H2O)= 12.0*2 +1.0*2 +16.0 = 42 g/mol is a molar mass for empirical formula.

120.6g/mol/42g/mol ≈ 3

So, empirical formula should be increased 3 times,

and molecular formula is C6H6O3.

Answer is D.

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3 years ago

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Johnny should have thrown away the unused chemicals because they still could have mixed with the other chemicals and it could cause a reaction.

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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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4 years ago

i don't get it how the question says select all that apply and only give us one answer don't you think its common sense that the

Klio2033 [76]

You should probably ask your teacher the next day, there may be a mistake.

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3 years ago

A 500g piece of Aluminum has a temperature increase of 7 degrees. The specific heat of Aluminum is 0.900 J/gC. If you were using

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Answer:

is it 500 g

Explanation:

cause m stands for mass

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2 years ago