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docker41 [41]
3 years ago
5

Which Chemical Reaction is balanced?

Chemistry
1 answer:
cupoosta [38]3 years ago
7 0

Answer:

A

Explanation:

The letter A is the correct answer

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Most of the costs associated with using renewable resources are due to
saveliy_v [14]

Answer:

a. overuse of resources is the correct answer.

Explanation:

Renewable resources are available and they are abundant but overuse of these renewable resources will have a negative effect on the surroundings and humans.

Overuse of renewable resources will leads to the depletion of these renewable sources in the future and will also make the ecosystem unbalance.

Renewable resources are solar energy, geothermal energy, biomass energy, wind energy, hydro energy.

Thus renewable resources are threatened due to overuse and it must be carefully used.

6 0
3 years ago
Calcium bicarbonate (Ca(HCO3)2) Ca:H:C:O = 1:2:2 ___ Lithium sulfide (Li:2s) Li:S = 2:__
Anastaziya [24]

Answer: The ratio of atoms in calcium bicarbonate ; Ca : H : C : O = 1:2:2:6.

The ratio of atoms in lithium sulfide; Li : S = 2 : 1

Explanation:

In calcium bicarbonate:Ca(HCO_3)_2

In a molecular formula of calcium carbonate there are:

Number of Calcium atoms = 1

Number of Hydrogen atom = 1 × 2 = 2

Number of Carbon atoms = 1 × 2 = 2

Number of Oxygen atoms = 3 × 2 = 6

So, Ca : H : C : O = 1 : 2 : 2 : 6

In lithium sulfide :Li_2S

In a molecular formula of lithium sulfide there are:

Number of Lithium atoms =  1 × 2 = 2

Number of Sulfur atoms = 1

So, the Li : S = 2 : 1

8 0
3 years ago
Which response includes all of the following processes that are accompanied by an increase in entropy?
dlinn [17]

Answer:

1 and 3.

Explanation:

The entropy measures the randomness of the system, as higher is it, as higher is the entropy. The randomness is associated with the movement and the arrangement of the molecules. Thus, if the molecules are moving faster and are more disorganized, the randomness is greater.

So, the entropy (S) of the phases increases by:

S solid < S liquid < S gases.

1. The substance is going from solid to gas, thus the entropy is increasing.

2. The substance is going from a disorganized way (the molecules of I are disorganized) to an organized way (the molecules join together to form I2), thus the entropy is decreasing.

3. The molecules go from an organized way (the atom are joined together) to a disorganized way, thus the entropy increases.

4. The ions are disorganized and react to form a more organized molecule, thus the entropy decreases.

7 0
3 years ago
Please help me on this.
Anika [276]
True will end up being the answer
6 0
3 years ago
Read 2 more answers
Acids are used to make...<br> 1. mortar and cement<br> 2. baking soda<br> 3. car batteries
mr Goodwill [35]
That is correct! Great Job High School!
7 0
3 years ago
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