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3 years ago

Why is there a vast amount of salt water on Earth?

Chemistry

1 answer:

Diano4ka-milaya [45]3 years ago

3 0

Water is an excellent solvent, salt is carried by the water due to erosion and carried to the ocean.

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What reaction occurs spontaneously?

Dimas [21]

Answer: Exergonic reactions

Explanation: From the research I did, exergonic reactions occur spontaneously because they don't need the addition of energy to occur.

I hope this helps!

4 0

3 years ago

What quantities are conserved when balancing a chemical reaction?

EleoNora [17]

The mass in a chemical reaction remains (mostly) the same.

(except for radiation/nuclear fission, in which mass gets converted into energy)

8 0

3 years ago

(9443+45−9.9) (9443+45−9.9) ×8.4× 10 6

ozzi

Booooooommmm!.................

6 0

4 years ago

Outline the steps needed to determine the limiting reactant when 30.0 g of propane, C3H8, is burned with 75.0 g of oxygen.

kumpel [21]

Answer : The limiting reactant is $O_2$

Explanation : Given,

Mass of $C_3H_8$ = 30.0 g

Mass of $O_2$ = 75.0 g

Molar mass of $C_3H_8$ = 44 g/mole

Molar mass of $O_2$ = 32 g/mole

First we have to calculate the moles of $C_3H_8$ and $O_2$ .

$\text{ Moles of }C_3H_8=\frac{\text{ Mass of }C_3H_8}{\text{ Molar mass of }C_3H_8}=\frac{30.0g}{44g/mole}=0.682moles$

$\text{ Moles of }O_2=\frac{\text{ Mass of }O_2}{\text{ Molar mass of }O_2}=\frac{75.0g}{32g/mole}=2.34moles$

Now we have to calculate the limiting and excess reagent.

The balanced chemical reaction is,

$C_3H_8+5O_2\rightarrow 3CO_2+4H_2O$

From the balanced reaction we conclude that

As, 5 mole of $O_2$ react with 1 mole of $C_3H_8$

So, 2.34 moles of $O_2$ react with $\frac{2.34}{5}\times 1=0.468$ moles of $C_3H_8$

From this we conclude that, $C_3H_8$ is an excess reagent because the given moles are greater than the required moles and $O_2$ is a limiting reagent and it limits the formation of product.

Therefore, the limiting reactant is $O_2$

5 0

3 years ago

The proton has a mass of?

aliina [53]

The relative mass is 1

3 0

3 years ago