3 years ago

The atomic nucleus does not contain ____________, which are negatively charged subatomic particles.

1 answer:

3 0

Only protons and neutrons are found in the nucleus of an atom. Electrons reside in orbitals surrounding the nucleus.

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What is the effect of an increase in the average kinetic energy of an object

timofeeve [1]

The effect of an increase in the average kinetic energy of an object would be an increase in the temperature of the object. Temperature is directly proportional to the average kinetic energy of the molecules in the object. Hope this answers the question.

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3 years ago

True or false?<br><br> To decrease the concentration of a<br> solution, add more liquid.

Setler79 [48]

It’s true !!!!!!!!!!!!!!!! N

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2 years ago

How did oxygen come up to make 21% of the earth's present atmosphere?

MakcuM [25]

Tiny organisms known as cyanobacteria, or blue-green algae.

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3 years ago

How many molecules are in 1.5 mole of glucose

GalinKa [24]

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Explanation:

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2 years ago

A gas occupies the volume of 215ml at 15C and 86.4kPa?

kherson [118]

Answer:

About 0.1738 liters

Explanation:

Using the formula PV=nRT, where p represents pressure in atmospheres, v represents volume in liters, n represents the number of moles of ideal gas, R represents the ideal gas constant, and T represents the temperature in kelvin, you can solve this problem. But first, you need to convert to the proper units. 215ml=0.215L, 86.4kPa is about 0.8527 atmospheres, and 15C is 288K. Plugging this into the equation, you get:

$0.8527\cdot 0.215=n \cdot 0.0821 \cdot 288\\n\approx 7.754 \cdot 10^{-3}$

Now that you know the number of moles of gas, you can plug back into the equation with STP conditions:

$1V=7.754 \cdot 10^{-3} \cdot 0.0821 \cdot 273\\V\approx 0.1738L$

Hope this helps!

3 0

3 years ago