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3 years ago

A gas at a pressure of 501 kpa

1 answer:

6 0

Use the combined gas law. It's (P1V1)/T1 = (P2V2)/T2.

P1 = 501 kPa, V1 = 5.2 L, T1 = 298 K*; P2 is your unknown, V2 = 7 L, T2 = 372 K*.

*In problems like this, you must always convert Celsius to Kelvin by adding 273 - or 273.15 if you want to be more specific. I used 273.

you should get 465.8387 kPa.

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The climate of an area can be different from its weather. Which of the following statements describes the climate of an area?

KatRina [158]

Answer:

Explanation:

because on the first alphabet they've been specific of the weather partaking in the area

5 0

3 years ago

many reactive chemicals are stored in containers filled with Argon gas for safekeeping what about Argon's atomic structure makes

Ulleksa [173]

Answer:

Argon has 8 valence electrons making it non reactive.

Explanation:

Reactive chemicals are store in containers filled with Argon gas because the argon gas is non reactive. This is true because the argon gas has completely filled octet structure.

This can further be explained by writing the electronic configuration of argon.

The electronic configuration of argon is given below:

Ar (18) => 1s² 2s²2p⁶ 3s²3p⁶

Valence electron => 3s²3p⁶ = 2 + 6 = 8

From the above illustration, we can see that the outermost shell (i.e 3s²3p⁶) is having 8 electrons indicating that it is completely filled as the maximum number of electrons any shell can accommodate outside the first shell is 8 electrons. Thus, argon has 8 valence electrons ( i.e electrons in the outermost shell) and hence it is non reactive as the outermost shell is completely filled.

4 0

3 years ago

Can someone please describe what they’re seeing in this picture?

Oduvanchick [21]

Answer:

In the given figure, There are two atoms -

Sodium ( Na )
Chlorine ( Cl )

sodium has one electron in valence shell and to get noble gas configuration ( stability ) it need to donate the outer most electron.

whereas,

chlorine has 7 electrons in valence shell and to get noble gas configuration ( stability ) it need to get one more electron.

in this condition Na ( sodium ) donates it's outermost electron to Cl ( chlorine ) and both became stable.

but now sodium has more number of protons than the electrons hence it get positive (+) charge and chlorine has more electrons than the protons hence it get negative (-) charge

so, they get stick to each other by strong electrostatic force acting on the charged atoms and forms a salt " NaCl " ( sodium chloride ) .

i hope it helped you.....

5 0

3 years ago

A fruit and oatmeal bar contains 142 nutritional calories. Convert this energy to calories

Alekssandra [29.7K]

Answer is: a fruit and oatmeal bar contains 142000 calories.
A nutritional calorie, or kilocalorie, is equal to 1000 calories.
E = 142 kcal · 1000 cal/kcal.
E = 142 000 cal.
Calorie (cal), or small calorie, is the amount of energy needed to heat one gram of water by one degree Celsius.
One small calorie is approximately 4.2 joules.
A calorie is a unit of energy.

8 0

3 years ago

What is the formula for tricarbon heptafluoride? C2F3 CF7 C3F7 C773

bagirrra123 [75]

Answer:

C3F7

'Tri' means 3

Tricarbon means 3 carbon

"Hepta" means 7

Fluoridez molecular formula is "F"

hence F7

3 0

3 years ago