Secondary air pollutants are the ones that are formed as a result of reactions
between primary pollutants and other elements in the atmosphere, such as ozone

5 0

3 years ago

Catalysts increase reaction rates by lowering the activation energy of a reaction.

Setler [38]

The answer is true, catalysts increase rates by lowering the activation energy of a reaction. Catalysts lower the reaction energy and so the reaction occurs faster. Enzymes perform the role of biological catalysts. Most metabolic pathways of the body are controlled by enzymes. Enzymes by classification are proteins. <span />

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3 years ago

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Muriatic acid, an industrial grade of concentrated HCl, is used to clean masonry and cement. Its concentration is 11.7 M. For ro

spin [16.1K]

383 mL of 3.50 M muriatic acid solution

Explanation:

First we calculate the number of moles of HCl:

number of moles = mass / molecular weight

number of moles of HCl = 47.7 / 35.5 = 1.34 moles

Now to determine the volume of the 3.50 M muriatic acid (clorhidric acid) solution, we use the following formula:

molar concentration = number of moles / volume (L)