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Juliette [100K]
3 years ago
9

What is the chemical formula for sodium sulfate?

Chemistry
1 answer:
yan [13]3 years ago
5 0

Hello!

When finding the chemical formula of a compound, we will need to find the charges of each element/bond.

Looking at our period table, sodium has a +1 charge, written as Na 1+, and sulfate has a charge of -2, and it is written as SO4 2-.

Now, we need to make the charges equivalent. To do this, we need to "criss-cross" the charges. This means that sodium will need to additional atoms to make the charges equal, and sulfate will need one.

Therefore, the chemical formula for sodium sulfate is: Na2SO4.

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The main function of the circulatory system (at least a paragraph)!
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The circulatory system moves blood in our bodies. The blood can move oxygen and nutrients to our muscles and limbs. The heartbeat pushes the blood, and the blood cells carry glucose. 
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3 years ago
How are independent and dependent variables related?
shtirl [24]
They are pretty much the cause and effect. The independent variable that is being changed in the experiment, so it is the cause. The dependant variable is the result of change the independant variable, so the effect.
3 0
3 years ago
Consider the following mechanism.
solong [7]

Answer :

(a) The overall equation is:

ClO^-(aq)+I^-(aq)\rightarrow Cl^-(aq)+IO^-(aq)

(b) The intermediates are  :

OH^-(aq),HClO(aq)\text{ and }HIO(aq)

Explanation :

<u>Part (a) :</u>

(1) ClO^-(aq)+H_2O(l)\rightarrow HClO(aq)+OH^-(aq)   (fast)

(2) I^-(aq)+HClO(aq)\rightarrow HIO(aq)+Cl^-(aq)    (slow)

(3) OH^-(aq)+HIO(aq)\rightarrow H_2O(l)+IO^-(aq)   (fast)

By adding the three equations and cancelling the common terms on both side, we will get the overall equation.

ClO^-(aq)+I^-(aq)\rightarrow Cl^-(aq)+IO^-(aq)

<u>Part (b)  :</u>

Intermediates are generated and consumed in the mechanism and do not include in the overall equation.

Since, intermediates will not include in the overall mechanism.

The intermediates are  :

OH^-(aq),HClO(aq)\text{ and }HIO(aq)

7 0
3 years ago
PLZ HELP ITS A TEST AND GIVE ME THE RIGHT ANSWER
Rzqust [24]
There’s no question?
6 0
3 years ago
Calculate the Density of the substances below to determine if they will float or sink in water.
Reil [10]

Explanation:

If the density of the object is more than that of water, it will sink. Otherwise it will float. The density of water is 1 g/mL.

Substance 1,

Mass, m = 450 g, Volume, V = 90 mL

Density = mass/volume

So,

d_1=\dfrac{450}{90}\\\\=5\ g/mL

It will sink.

Substance 2,

Mass, m = 35 g, Volume, V = 70 mL

Density = mass/volume

So,

d_2=\dfrac{35}{70}\\\\=0.5\ g/mL

It will float.

Substance 3,

Mass, m = 24 g, Volume, V = 12 mL

Density = mass/volume

So,

d_3=\dfrac{24}{12}\\\\=2\ g/mL

It will sink.

7 0
2 years ago
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