, 16.05.2020batopusong81

# How to m-ethylbenzenesulfonic acid synthesized from benzene​

1. 2AgNO3 + BaCl2 --- 2AgCl + Ba(NO3)2

2. 3MgCl2 + 2Na3PO4 --- Mg3(PO4)2 + 6NaCl

3. 2 Fe(OH)3 + 3H2SO4 --- Fe2(SO4)3 + 6H2O

Good Day

Problem:

In every chemical reaction of Substance A, the sum of the weights of the products formed is greater than the initial weight of A which undergoes a reaction. Substance X,in turn, undergoes a chemical reaction in which the combined weight of the products is exactly equal to the initial weight of X which reacted. What kind of substances are A and X?

Substance A is a pure compound or substance (element or compound)

When we combined   Na  +  Cl₂  ⇒ NaCl

NaCl has a greater mass than Na

NaCl has a greater mass than Cl₂

Substance X is a mixture (the substances are just mixed and the chemical constituents stay the same.)

Hope it helps...=)

Hello!

If 15 ml of alcohol is added to 50 ml of H20. What is the concentration of the solution ?

We have the following information:

% v/v (percentage of volume per volume) = ?

V1 (solute volume) = 15 mL

V (volume of the solution) = solute + solvent = 15 + 50 = 65 mL

We apply the data to the formula of volume percentage of the solute per volume of solution, we will have:

The concentration of the solution is approximately 23%

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