Fill in the coefficients that will balance the following reaction:

Chemistry

2 answers:

kumpel [21]3 years ago

8 0

2NaCl + 1CaS →1Na2S + 1CaCl2

Anastaziya [24]3 years ago

5 0

Answer: $2NaCl+CaS\rightarrow Na_2S+CaCl_2$

Explanation: The coefficients of $a_0$ , $a_1$ , $a_2$ , and $a_3$ are 2, 1, 1 and 1 respectively.

According to the law of conservation of mass, the mass of the products must be same as the mass of the reactants in every chemical equation.

In order to do so , the number of atoms of every element must be same on both sides of the equation and thus the chemical equation is balanced.

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Which of the following is the correct name for the compound mgbr2? magnesium bromate magnesium bromide magnesium dibromide magne

Sergeeva-Olga [200]

Correct answer is magnesium bromide. This is an ionic compound with metal forming a positive ion - K+ and halogen forming a negative ion - Br-. When group 7 element form ions they have a suffix -ide. Bromine is the element and when it forms a negative ion bromine is called bromide with the suffix.
Magnesium gives 2 electrons and bromine can take only 1 electron, therefore 2 bromine atoms are needed. Therefore magnesium forms ionic bonds with 2 bromine atoms.
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