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ryzh [129]
2 years ago
13

A truck travels 110 miles and it speed is 55mi/hr. How long did it take to

Chemistry
1 answer:
hammer [34]2 years ago
4 0

Answer:

2 hours Speed =110/2=55 miles ler hour

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Given 50.0 grams of Strontium, find grams of Phosphorus required for complete reaction
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Answer:

                     Mass = 11.78 g of P₄

Explanation:

                     The balance chemical equation is as follow:

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Step 1: Calculate moles of Sr as;

Moles = Mass / M/Mass

Moles = 50.0 g / 87.62 g/mol

Moles = 0.570 moles

Step 2: Find moles of P₄ as;

According to equation,

6 moles of Sr reacted with  =  1 mole of P₄

So,

0.570 moles of Sr will react with  =  X moles of P₄

Solving for X,

X = 1 mol × 0.570 mol / 6 mol

X = 0.0952 mol of P₄

Step 3: Calculate mass of P₄ as,

Mass = Moles × M.Mass

Mass = 0.0952 mol × 123.89 g/mol

Mass = 11.78 g of P₄

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It's a conductor

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