Each term of a chemical compound required for the given statements are in bold letters as depicted below.
<h3>How to define chemical compounds?</h3>
1) The chemical compounds that are present before a reaction occurs is called; reactants
2) The compounds produced from the reaction are called; products
3) Unit of measure, containing Avogadro's number is called; Mole
4) The quantitative proportion of reactants to products is called; Stoichiometry.
5) Two solutions are mixed and an insoluble substance forms; A precipitation reaction
6) An illustration of the reaction that occurs between two or more chemical compounds is called; chemical equation
7) A solid compound that contains water molecules is called hydrates.
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Answer:- 0.0634 M
Explanation:
molarity is defined as the number of moles of solute in 1 L of solution
molar mass of Ni(NO₃)₂ - 182.7 g/mol
number of moles of Ni(NO₃)₂ - 5.80 g/ 182.7 g/mol = 0.0317 mol
number of moles in 500 mL - 0.0317 mol
therefore number of moles in 1000 mL - 0.0317 mol / 500 mL x 1000 mL/L
molarity of the solution is - 0.0634 M
