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brilliants [131]
2 years ago
15

Que son fórmulas químicas ​

Chemistry
1 answer:
RSB [31]2 years ago
6 0

Answer:

dont know if you asking to translate or not but here is a translation from spanish to english:

in english: what are chemical formulas

the answer in english is: a mathematical relationship or rule expressed in symbols.

in spanish: una relación o regla matemática expresada en símbolos.

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Benzene has a specific gravity of 0.88. if it was spilled in a river what would it do?
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As we know,
                    Density of Benzene  =  876 Kg/m³
And,
                    Density of Water       =  997 Kg/m³
So,
     Specific Gravity is calculated as,

                     Specific Gravity  =  Density of Benzene / Density of Water

                     Specific Gravity    =   876 Kg/m³ / 997 Kg/m³

                     Specific Gravity    =  0.878

Every object having specific gravity less than 1 will float on water and if value is greater than 1 then it will sink.

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3 years ago
For an experiment, a student needs a compound that has the following properties.
Neporo4naja [7]
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2 years ago
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What is the percent yield of a reaction in which 200. g of phosphorus trichloride reacts with excess water to form 91.0 g of hcl
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Answer is: <span>yield of a reaction is 56,4%.
</span>Chemical reaction: PCl₃ + 3H₂O → 3HCl + H₃PO₃.
m(PCl₃) = 200 g.
m(HCl) = 91,0 g.
n(PCl₃) = m(PCl₃) ÷ M(PCl₃).
n(PCl₃) = 200 g ÷ 137,33 g/mol.
n(PCl₃) = 1,46 mol.
n(HCl) = m(HCl) ÷ M(HCl).
n(HCl) = 91 g ÷ 36,45 g/mol.
n(HCl) = 2,47 mol.
From reaction: n(PCl₃) : n(HCl) = 1 : 3.
n(HCl) = 1,46 mol · 3 = 4,38 mol.
Yield of reaction: 2,47 mol ÷ 4,38 mol · 100% = 56,4%.
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3 years ago
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