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4 years ago

1. What controls the cell? 2. Calls can be many and _

1 answer:

4 0

Hey mate!
You stuck?

1.) The cell structure which controls the activities of the cell is the nucleus.

2.) Cells can be many ____ and _____ : Shapes; Sizes

Hope this helps! :)

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The valence electrons largely determine the

ss7ja [257]

Valence electrons largely determine the chemical properties of an element.

8 0

3 years ago

A cylinder with a movable piston contains 2.00 g of helium, He, at room temperature. More helium was added to the cylinder and t

mr Goodwill [35]

Answer : The mass of helium added to the cylinder was, 1.5 grams

Explanation :

Avogadro's law : It is defined as the volume of gas is directly proportional to the number of moles of gas at constant pressure and temperature.

$V\propto n$

or,

$\frac{V_1}{n_1}=\frac{V_2}{n_2}$

where,

$V_1$ = initial volume of gas = 2.00 L

$V_2$ = final volume of gas = 3.50 L

$n_1$ = initial moles of gas = $\frac{\text{Mass of He}}{\text{Molar mass of He}}=\frac{2.00g}{4g/mol}=0.5mol$

$n_2$ = final temperature of gas = ?

Now put all the given values in the above equation, we get:

$\frac{2.00L}{0.5mol}=\frac{3.50L}{n_2}$

$n_2=0.875mol$

Now we have to calculate the mass of helium were added to the cylinder.

$\text{Mass of He}=\text{Moles of He}\times \text{Molar mass of He}$

$\text{Mass of He}=0.875mol\times 4g/mol=3.5g$

Mass of helium added = 3.5 - 2.00 = 1.5 g

Thus, the mass of helium added to the cylinder was, 1.5 grams

8 0

3 years ago

What Is atomic radius

lesya692 [45]

Answer:

The atomic radius is the measure of the size of its atoms.

~batmans wife dun dun dun...

3 0

4 years ago

Read 2 more answers

Which particles are found in the nucleus of an argon atom

LuckyWell [14K]

Answer:

) protons and electrons (2) protons and neutrons (3) protons and neutrons (4) positrons and electrons

Explanation:

Hopes this helps

7 0

3 years ago

Read 2 more answers

The mass of the liquid in the graduated cylinder shown above

Arisa [49]

Answer:

there should be a picture to go with this question. it will give you the mass which is needed to calculate the density.

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3 years ago

1. What controls the cell? 2. Calls can be many ____ and _____

1. What controls the cell? 2. Calls can be many and _