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earnstyle [38]
3 years ago
15

40 PTS HELP HELP HELP!

Chemistry
2 answers:
alisha [4.7K]3 years ago
8 0

Answer:

Point one

Explanation:

Hope this helps :))

Shkiper50 [21]3 years ago
7 0

Answer:

As per the property of plane mirror the image of an object always forms in front of mirror at same distance as that of distance of object.

Also the distance must be measure perpendicular from the mirror

so here the perpendicular position of clip from mirror is to find out so that its image it to be locate behind the mirror at same distance

Here image is always virtual to position must be behind the mirror

so the correct position of the pin image must be position 3

so correct answer here is

3

Explanation:

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An experiment reacts 20.4 g of zinc metal with a solution containing an excess of iron (III) sulfate. After the reaction, 10.8 g
quester [9]

Answer:

The answer to your question is 92.7%

Explanation:

Balanced Chemical reaction

                             3 Zn  + Fe₂(SO₄)₃   ⇒   2Fe   +   3ZnSO₄

Molecular weight

Zinc = 65.4 x 3 = 196.2g

Iron (III) = 56 x 2 = 112 g

Proportions  

                           196.2 g of Zinc ------------------ 112 g of Iron

                            20.4 g of Zinc  -----------------   x

                            x = (20.4 x 112) / 196.2

                            x = 2284.8/196.2

                            x = 11.65 g of Iron

% yield = \frac{10.8}{11.65}  x 100

% yield = 0.927 x 100

% yield = 92.7

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