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Anastaziya [24]
3 years ago
8

What is the half life of this element? A. 80 days B. 40 days C. 5 days D. 10 days

Chemistry
1 answer:
masha68 [24]3 years ago
4 0

Answer:

c. 5days

Explanation:

there is no question but if it's a graph

the answer is 5days

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gavmur [86]
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There is water on the pan of the scale as you measure the mass of an object. If you were to ignore the water, what would be the
mihalych1998 [28]
Remember that density refers to the "mass per unit volume" of an object.

So, if an object had a mass of 100 grams and a volume of 100 milliliters, the density would be 100 grams / 100 ml.

In the question, water on the surface of the scale would add weight, so the mass of the object that you're weighing would appear to be heavier than it really is. If that happens, you'll incorrectly assume that the density is GREATER than it really is

As an example, suppose that there was 5 ml of water on the surface of the scale. Water has a density of 1 gram per milliliter (1 g/ml) so the water would add 5 grams to the object's weight. If we use the example above, the mass of the object would seem to be 105 grams, rather than 100 grams. So, you would calculate:

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density = 1.05 g/ml

The effect on density would be that it would erroneously appear to be greater

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6 0
3 years ago
How do you balance redox equations in acidic solutions?
Anuta_ua [19.1K]

Answer:

First, balance the half-reactions

Second, equalize the electrons

Third,add two reaction equations to get final answer

Explanation:

For example

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(i) Balancing the half reactions

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(iii)

Add the two where electrons and some Hydrogen ions will cancel out

5H₂C₂O₄+6H⁺+2MnO₄⁻---->10CO₂+2Mn²⁺+8H₂O

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3 years ago
Is water wet? or is it just an experience?
polet [3.4K]
WATER is wet to make it a more marketable commodity
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3 years ago
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