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arlik [135]
2 years ago
7

Please help me complete the following table

Chemistry
1 answer:
Tasya [4]2 years ago
5 0

Answer:

1.) Atomic No. 19

No. of proton 19

No. of electron 19

symbol 39K19

2.) Atomic no. 26

Mass No. 56

No. of proton 26

Symbol 56Fe26

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How do double replacement reactions relate to Combustion reactions
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Explanation:

A single-replacement reaction replaces one element for another in a compound.

A double-replacement reaction exchanges the cations (or the anions) of two ionic compounds.

A precipitation reaction is a double-replacement reaction in which one product is a solid precipitate.

Solubility rules are used to predict whether some double-replacement reactions will occur.

3 0
3 years ago
What is the molarity of a solution prepared by dissolving 0.217 mol of ethanol, C2H5OH, in enough water to make 100.0 mL of solu
sergeinik [125]

Answer: 2.17mol/L

Explanation:

C=n/V

n: 0.217mol

V: 100.0mL

1. Convert mL to L (100.0mL/1000 = 0.01L)

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3 years ago
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Answer:

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P₁V₁ = P₂V₂

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P₁ = 3.88 atm                       P₂ = ? atm

V₁ = 7.74 L                           V₂ = 0.23 L

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(3.88 atm)(7.74 L) = P₂(0.23 L)                       <----- Insert values

30.0312 = P₂(0.23 L)                                      <----- Simplify left side

131 = P₂                                                          <----- Divide both sides by 0.23

6 0
1 year ago
Which of the following statements is true of an aqueous solution of sodium chloride?
Ilya [14]

Answer:

What are the statements please

Explanation:

4 0
3 years ago
Help me out please!?
Sholpan [36]

Answer:

area a

Explanation:

6 0
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