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natulia [17]
3 years ago
6

Does anybody know how to balance chemical equations?

SAT
1 answer:
AleksandrR [38]3 years ago
4 0
Yes my dear~♥️

A chemical equation is a written symbolic representation of a chemical reaction. The reactant chemical(s) are given on the left-hand side and the product chemical(s) on the right-hand side. The law of conservation of mass states that no atoms can be created or destroyed in a chemical reaction, so the number of atoms that are present in the reactants has to balance the number of atoms that are present in the products. Follow this guide to learn how to balance chemical equations differently.

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Work out the area of the parallelogram 13cm 21cm 79 degrees.
yawa3891 [41]

The area of the given parallelogram is approximately

268cm^2

Data given;

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  • b = 21cm
  • angle = 79 degrees
<h3>Area of a Parallelogram</h3>

The area of a parallelogram is the product of its two sides and the sine of the angle (if given).

So the formula of our parallelogram is

A = a.bsinx

x = angle

Substitute the values and solve.

A = 13 * 21 * sin79\\A = 267.98cm^2\\A = 268cm^2

From the calculation above, the area of the parallelogram is approximately 268cm^2

Learn more on area of a parallelogram here;

brainly.com/question/17540452

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Explanation:

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