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atroni [7]
2 years ago
10

All of the following are diatomic molecules except? a)H b)Br c) CI d)S

Chemistry
2 answers:
xxTIMURxx [149]2 years ago
8 0
<span>d)S is not one of them. 

Here's an easy way to remember them, attached: </span>

Oksana_A [137]2 years ago
8 0
Sulphur is not one of them
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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:

                                          6 Sr + P4 → 2 Sr₃P₂

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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