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mestny [16]
3 years ago
12

How does the amount of freshwater on Earth compare to the amount of saltwater on Earth?

Chemistry
1 answer:
wel3 years ago
5 0
Fresh water= 1% Salt water= 99%
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During all chemical reactions, mass, energy, and charge are
choli [55]

Answer:

The correct answer is option 2.

Explanation:

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.

This also means that 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.The total energy of an  remains constant in a chemical  reaction,.

For example:

2H^++S^{2-}\rightarrow H_2S

Mass of reactants = 2\times 1 g/mol + 1\times 32 g/mol = 34 g/mol

Mass of products = (2\times 1 g/mol+1\times 32 g/mol)=34 g/mol

Charge on reactant side = Charge on product side

2\times (+1) +(-2)=0

0=0

7 0
2 years ago
Can someone help me with thins, im to lazy to read rn i did freaking 47 over due homeworkkkk
AysviL [449]
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3 0
3 years ago
A compound contains 73.47% carbon, 10.20% hydrogen and 16.33% by mass of oxygen. The
DochEvi [55]
322 g/mol it’s the answer for the calculate the molecular formula
8 0
2 years ago
Volume is the quantity of two-dimensional space occupied by a liquid, solid, or gas.
expeople1 [14]

Answer:

B.False

Explanation:

Volume is used in 3D shapes, 2D is found by area.

Hope this helps please mark as brainliest ^^

3 0
3 years ago
Read 2 more answers
Determine whether each statement is an example of a physical change or a chemical change. Newspaper yellows in the sun. Physical
miss Akunina [59]

Answer:

the newspaper one is a chemical change because the chemicals in the paper have reacted with something and turned a different color. the wax one is a physical change because it is a change in the phase of matter, which is always a physical change (still the same substance chemically)

7 0
2 years ago
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