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Pie
3 years ago
8

Help If U Know This.....Please

Chemistry
1 answer:
skad [1K]3 years ago
6 0
Question 5)

1 Hour: 100g
40 Minutes: 50g
20 Minutes: 25g
0 Minutes: 12.5g

Question 6)

160 Days: 80ou
120 Days: 40ou
80 Days: 20ou
40 Days: 10ou
0 Days: 5ou

Every period of time, the radioactive isotopes halve in numbers as they emit radiation.

I think you now know the gist. Try doing the rest yourself.

Good luck.
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Four processes that change rock from one type to another.
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Erosion
waethring
deposition
pressure or heat 
all of this can change the form of rock to another
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2 years ago
List the major types of intermolecular forces in order of increasing strength. Is there some overlap? That is, can the strongest
Doss [256]

Answer:

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Explanation:

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6 0
3 years ago
A student wants to investigate abiotic factors that affect tomato plants.
Julli [10]
Since abiotic is a non living factor B would be the answer because water is abiotic
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How many grams of material is lost in the aqueous phase if two extractions are carried out on 100 mL of a 5% (m/v) aqueous solut
san4es73 [151]

Answer:

4.94g of material

Explanation:

Partition coefficient (Kp) of a substance is defined as the ratio between concentration of organic solution and aqueous solution, that is:

Kp = <em>8 = Concentration in Ethyl acetate / Concentration in water</em>

100mL of a 5% solution contains 5g of material in 100mL of water. Thus:

8 = X / 100mL / (5g-X) / 100mL

<em>Where X is the amount of material in grams that comes to the organic phase.</em>

8 = X / 100mL / (5g-X) / 100mL

8 = 100X / (500-100X)

4000 - 800X = 100X

4000 = 900X

4.44g = X

<em>Thus, in the first extraction you will lost 4.44g of material from the aqueous phase.</em>

And will remain 5g-4.44g = 0.56g.

In the second extraction:

8 = X / 100mL / (0.56g-X) / 100mL

8 = 100X / (56-100X)

448 - 800X = 100X

448 = 900X

0.50g = X

<em>In the second extraction, you will extract 0.50g of material</em>

Thus, after the two extraction you will lost:

4.44g + 0.50g = <em>4.94g of material</em>

<em></em>

6 0
2 years ago
Can gravity be considered a force? Explain your reasoning
bija089 [108]

Answer:

I think that gravity can be considered a force.

Explanation:

As the object falls, it moves faster and faster. Gravity is considered a universal force because it acts between any two masses anywhere in the universe. For example, there is a gravitational pull between the Sun and the Moon. Even small masses attract one another.

Hope this helped! :)

8 0
2 years ago
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