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2 years ago

1. Identify whether each of the elements is a metal, non-metal, or metalloid:

Chemistry

2 answers:

lina2011 [118]2 years ago

8 0

Answer:

Ruthenium → metalloid
Neon → non-metal
Germanium → metalloid
Neptunium → metal
Iodine → non-metal
Strontium → metal
Caesium → metal
Europium → metal

Liono4ka [1.6K]2 years ago

3 0

Answer:

neon - non metal

Explanation:

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Answer: The molar mass of unknown triprotic acid is 97.66 g/mol

Explanation:

To calculate the molarity of acid, we use the equation given by neutralization reaction:

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where,

$n_1,M_1\text{ and }V_1$ are the n-factor, molarity and volume of triprotic acid

$n_2,M_2\text{ and }V_2$ are the n-factor, molarity and volume of base which is NaOH.

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To calculate the molecular mass of solute, we use the equation used to calculate the molarity of solution:

$\text{Molarity of the solution}=\frac{\text{Mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Volume of solution (in mL)}}$

We are given:

Molarity of solution = 0.0077 M

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Volume of solution = 250 mL

Putting values in above equation, we get:

$0.0077M=\frac{0.188\times 1000}{\text{Molar mass of triprotic acid}\times 250}\\\\\text{Molar mass of triprotic acid}=97.66g/mol$

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2 years ago

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