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olya-2409 [2.1K]
3 years ago
10

Someone answer this please.

Chemistry
2 answers:
Brut [27]3 years ago
7 0

Answer:

54.5% is the correct answer

Nataly_w [17]3 years ago
6 0

Answer: The percent composition of oxygen is 54.5%

Explanation:

Below I have attached my work through, but essentially the percent composition relies on finding the mass of the oxygens and dividing it by the mass of the whole compound. The masses of the elements can be found on the periodic table and added together to get a mass of the whole compound- ascorbic acid. Then, you turn this proportion into a percent by multiplying by 100%.

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Enter the formula for the polyatomic ion in MnCO3.
joja [24]
The formula is Mn2+CO2= MnCO3
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3 years ago
The density of copper is 9.0g/cm3 and the mass of a copper coin is 0.31g. Calculate the volume of the coin.
Lady_Fox [76]
Multiply 9.0g/cm3 by 0.31g = 2.79cm3
6 0
4 years ago
If the separation between two charges increases, how does the force
Leona [35]

The force reduces

Explanation:

According to Coulomb's law, the force between the charges will reduce if the separation between the charges increases.

Coulomb's law states that "the force between two charges is a directly proportional to the product of the magnitude of the charges and inversely proportional to the square of their separation.".

                  F = \frac{K q_{1} q_{2} }{r^{2} }

where F is the electric field force

            K is the constant of the field

       q_{1} is charge 1

         q_{2} is charge 2

                 r is the separation

We see that the separation is inversely proportional to the force between the charges. The larger the separation, the weaker or smaller the force.

learn more:

Newton's laws brainly.com/question/11411375

#learnwithBrainly

5 0
3 years ago
Rank the ions in each set in order of increasing size, and explain your ranking:
Paha777 [63]

Explanation:

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Therefore, ions are ranked according to their increase in size as follows.

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When an atom tends to gain electrons then it acquires a negative charge. This means that size of the atom increases.  

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Similarly, order of increasing size of O^{2-}, F^{-}, N^{3-} is as follows.

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Enzyme Substrate Products

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Trypsin Protein Peptides + Amino Acids

6 0
3 years ago
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