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ruslelena [56]
3 years ago
10

Calculate the relative formula mass for KMnO4

Chemistry
1 answer:
GarryVolchara [31]3 years ago
4 0

Explanation:

please mark me as brainlest

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M(8,7) is the midpoint of rs. The coordinates of s are (9,5) what is the coordinates of r
Darya [45]

Answer:

Coordinate or r = (7,9).

Explanation:

Data obtained from the question include the following:

Mid point = (8,7)

Coordinate of S = (9,5)

Coordinate of r =...?

We shall determine the coordinate of r as follow:

Let the coordinate of r be (x2, y2)

Mid point = (x1 + x2)/2 , (y1 + y2)/2

Mid point = (8,7)

Coordinate of S = (9,5)

x1 = 9

y1 = 5

x2 =?

y2 =?

The value of x2 can be obtained as follow:

8 = (x1 + x2)/2

8 = (9 + x2)/2

Cross multiply

9 + x2 = 2 × 8

9 + x2 = 16

Collect like terms

x2 = 16 – 9

x2 = 7

The value of y2 can be obtained as follow:

5 = (y1 + y2)/2

7 = (5 + y2)/2

Cross multiply

5 + y2 = 2 × 7

5 + y2 = 14

Collect like terms

y2 = 14 – 5

y2 = 9

Coordinate of r = (x2, y2)

Coordinate or r = (7,9)

3 0
4 years ago
Planets X and Y orbit each other in space. Which changes would have the greatest effect on increasing the gravitational attracti
liubo4ka [24]

Answer:

halving, the mass of planet X and halving the distance between the planets

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What can we do to protect our oceans ?
Tju [1.3M]
Pick up plastic, reduce waste, reduce pollutants
7 0
3 years ago
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Which event is an example of melting?
avanturin [10]

Answer:

A. Wax drips down the side of a lot candle.

Explanation:

The chemical change from solid to liquid. This is a combustion reaction, so carbon dioxide gas and water vapour is also produced but you can't see them

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Convert 10 liter into m3.
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0.01 cubic meters
Hope this helps
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3 years ago
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