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maksim [4K]
3 years ago
9

What is the mass, in grams, of potassium in 12.5 g of k

Chemistry
1 answer:
anyanavicka [17]3 years ago
7 0

Answer:

Option d)3.32 g is correct.

Explanation:

hope this helps

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4.4 grams of CO2 represents how many moles?
jeka57 [31]

Answer:

1) Moles of CO 2 = Given mass / Molecular mass of CO 2 = 4.4 / 44 = 0.1 mole. 2) Molecules of CO2 in 0.1 moles of CO2 = 0.1 x 6.023 x 10 23 = 6.023 x 10 22 molecules 3) 44 gram (molecular wt of CO 2) contains 2 moles atom of oxygen therefore 4.4 gram of CO2 will contain = 2 /44 *4.4 = 0.2 moles atom of Oxygen.

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3 years ago
What are two factors that can affect salinity?
Oxana [17]

Answer:

precipitation and evaporation

Explanation:

salinity :salt concentration

Precipitation: this brings freshwater into the ocean which are not salty, so it is diluting its salt concentration.

evaporation: takes all the water and leaves the salt behind

5 0
3 years ago
The discrete group of atoms that are held together by sharing valence electrons
Pepsi [2]

Answer:

Molecule

Explanation:

Molecule is defined as the discrete group of atoms that are held together by sharing valence electrons.

This is because two or more atoms is known as a molecule and for electron sharing to occur then there must be a minimum of two atoms which is also known as a molecule present in the sharing process.

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3 years ago
A farmer plants corn in nutrient rich soil. The corn plants absorb nutrients from the soil in order to grow and perform life pro
ratelena [41]

Answer:

It will make the soil dry out and lose nutrance, the soil will be unusable in later years. plz give me brainleist

8 0
3 years ago
What is the correct order of star colors from hottest to coolest?
juin [17]

Answer: The answer is blue, white, yellow-white, orange.

Explanation: These are the two basic reasons for different star colors:

Temperature – cooler stars are red, warmer ones are orange through yellow and white. The hottest stars shine with blue light

Age – As a star ages it produces different chemicals which burn at different temperatures. We can use a star’s color to show its relative age

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3 years ago
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