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3 years ago

Correctly label the parts of the water cycle enter our answer in the space provided and include the question numbers

Chemistry

1 answer:

strojnjashka [21]3 years ago

3 0

The correct matches are:

1 - Evaporation;

This process is caused by the heat of the Sun. Basically, the water turns into gaseous form and because it is very light it goes up into the atmosphere.

2 - Condensation;

Once the water vapor reaches certain heights in the atmosphere, it starts to condensate. This means that the water vapor turns into liquid form again, becoming small drops of water and forming a cloud.

3 - Precipitation;

Once the drops of water are formed, under the influence of the gravity, they start to fall on the surface of the Earth. This is known as precipitation.

4 - Runoff;

Once the water from the precipitation reaches the land, the water moves from the higher toward the lower areas. This is know as runoff.

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Balance Cr2O3+Mg -->Cr + MgO

fiasKO [112]

Balancing means there are equal amount of molecules on each side, both reactant and products. This is a method I like to do.

Under, I count how many molecules are in each side.

Cr2O3+Mg -->Cr + MgO

Cr: 2 1

O: 3 1

Mg: 1 1

Let's guess and make the number of oxygens equal on both sides.

Cr2O3+Mg -->Cr + 3MgO

Cr: 2 1

O: 3 3 EQUAL

Mg: 1 3

See what we did there? We multiplied the MgO on the products side by 3 so we can have 3 oxygens. Now let's multiply the Mg on the reactants by three so Mg AND O can be equal.

Cr2O3+3Mg -->Cr + 3 MgO

Cr: 2 1

O: 3 3 EQUAL

Mg: 3 3 EQUAL

Finally, we just need to multiply the loner Cr in the products side by two to make it equal for all elements.

Cr2O3+3Mg -->2Cr + 3 MgO

6 0

3 years ago

What is the molar mass of HBR

alexdok [17]

Answer:

Molar mass of bromine is equal to $80.9119$

Explanation:

The molar mass of HBr is equal to the sum of atomic weight of Bromine.

Atomic Weight of hydrogen is equal to $1.00794$

Atomic Weight of Bromine is equal to $79.904$

Molar mass of Bromine

= Atomic Weight of hydrogen + Atomic Weight of Bromine

Molar mass of Bromine $= 79.904 + 1.00794 = 80.9119$

3 0

3 years ago

Molecule of water contains hydrogen and oxygen in a 1:8 ratio by mass. This is a statement of __________.A) the law of multiple

fgiga [73]

Answer:

The correct answer is B.

Explanation:

The molecule of water has 2 atoms of hydrogen and 1 atom of oxygen.

The ratio of masses are given as:

$2\times 1 g/mol: 1\times 16 g/mol= 1 : 8$

This illustrates the law of definite proportions which is also known as law of constant compositions .

The law states that 'the elements combining to form compound always combine in a fixed ratio by their mass.'

Whereas :

Law of multiple proportion states that when two elements combine with each other to form more than one compounds , the mass of one element with respect to the fixed mass of another element are in ratio of small whole numbers.

Law of conservation of mass states that mass can neither be created nor be destroyed but it can only be transformed from one form to another form.

In a balanced chemical reaction ,total mass on the reactant side must be equal to the total mass on the product side.

Law of conservation of energy states that energy can neither be created nor be destroyed but it can only be transformed from one form to another form.

7 0

4 years ago

The volume of 160. g of CO initially at 273 K and 1.00 bar increases by a factor of two in different processes. Take CP,m to be

mel-nik [20]

Answer:

Explanation:

w eFedfweF edf SEDFAsFGFSDSFG BAEWRDA G

5 0

3 years ago

Gravitational force acts on two objects with which attribute? A. mass B. force C. orbit D. speed

Svetlanka [38]

It is force I believe