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Elis [28]
2 years ago
14

2. Name the type of reaction.

Chemistry
1 answer:
Sliva [168]2 years ago
5 0

Answer:

1.) Single Displacement Reaction

2.) Synthesis Reaction

3.) Single Displacement Reaction

4.) Decomposition Reaction

5.) Double Displacement Reaction

Explanation:

Single Displacement Reaction: a reaction in which an element is swapped out for another in a molecule

Double Displacement Reaction: a reaction in which the cation of one molecule is swapped out with the cation of another

Decomposition Reaction: a reaction in which a molecule breaks down into smaller molecules/atoms

Synthesis Reaction: a reaction in which atoms or molecules come together to create a larger molecule

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2 years ago
There is about 1.0 g of calcium as Ca2+ in 1.0 L of milk. What is the molarity of Ca2+ in milk?
meriva

Explanation:

It is known that molarity is the number of moles present in a liter of solution.

           Molarity = \frac{\text{no. of moles}}{volume}

Also, number of moles equal mass divided by molar mass. And, molar mass of calcium is 40.07 g/mol.

               No. of moles = \frac{mass}{\text{molar mass}}

                                     = \frac{1.0 g}{40.07 g/mol}

                                     = 0.025 mol

Therefore, calculate the molarity as follows.

             Molarity = \frac{\text{no. of moles}}{volume}

                            = \frac{0.025 mol}{1.0 L}  

                            = 0.025 M

Thus, we can conclude that molarity of Ca^{2+} in milk is 0.025 M.

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3 years ago
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