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Inessa [10]
3 years ago
11

A student carries out a chemical reaction that produces a brown powder. How should the student measure the amount of product for

med?
Chemistry
2 answers:
FromTheMoon [43]3 years ago
7 0

Answer:

By measuring the mass on a scale.

Explanation:

When a solid is formed in a reaction (such as a powder), the measure that is taken is the mass on a scale. The solid is separated, for filtration for example. So, to have the mass of it, first, the filter paper is measured alone, then with the solid. The mass of the solid will be the difference between the masses measured.

adoni [48]3 years ago
6 0
The mass of the solid product of the reaction is determined by weighing.
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What is the area of triangle ABC with vertices A(x¹,y¹), B(x²,y²)and C (x³,y³)??????????<br>​
AlexFokin [52]

Answer:

Area = \frac{1}{2}|x_1(y_2 - y_3)+x_2(y_3 - y_1)+x_3(y_1 - y_2)|

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Explanation:

Given

A = (x_1,y_1)

B = (x_2,y_2)

C = (x_3,y_3)

Required

Determine the area

The area of a triangle is :

Area = \frac{1}{2}|A_x(B_y - C_y) + B_x(C_y - A_y) + C_x(A_y - B_y)|

By substituting values for the x and y coordinates of A, B and C;

We have:

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For instance

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B= (2,1)

C = (2,3)

The area is:

Area = \frac{1}{2}|0(1-3) + 2(3-3) + 2(3-1)|

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Area = \frac{1}{2}|4|

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3 years ago
The percent composition of calcium is ?
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