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kozerog [31]
3 years ago
8

Can someone help me pls.

Chemistry
1 answer:
OlgaM077 [116]3 years ago
6 0

Answer:

you need to show more thing cause we not going to know what we have to do

Explanation:

and show more detaills

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What is the density of fluorine gas, F2, at STP? E) 0.848 g/L B) 1.18 g/ L C ) 1.70 g/L D) 0.589 g/L
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Answer:

C ) 1.70 g/L

Explanation:

Using ideal gas equation as:

PV=nRT

where,  

P is the pressure

V is the volume

n is the number of moles

T is the temperature  

R is Gas constant having value = 0.0821 L.atm/K.mol

Also,

Moles = mass (m) / Molar mass (M)

Density (d)  = Mass (m) / Volume (V)

So, the ideal gas equation can be written as:

PM=dRt

At STP,

Pressure = 1 atm

Temperature = 273.15 K

Molar mass of fluorine gas = 38 g/mol

Applying the equation as:

1 atm × 38 g/mol = d × 0.0821 L.atm/K.mol × 273.15 K

<u>⇒d = 1.70 g/L</u>

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2 years ago
The sum of protons and neutrons in the nucleus of an atom is called the
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Answer:

The mass number.

Explanation:

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How sensitive to changes in water temperature are coral reefs? To find out, measure the growth of corals in aquariums where the
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Explanation:

A quantitative variable is those that can take a range of values. In this case, the temperature may vary across a range of values associated with the survival of coral reefs.  

A categorical (also known as qualitative) variable is characterized to present finite states. In this case, the coral reefs can survive or not depending on their responses to changes in the temperature.

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answer

Explanation:

sorry I do not know the answer, have a great day

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