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My name is Ann [436]
3 years ago
10

9. Carbon-14 has a half-life of 5,730 years. How many years have passed after 3 half-lives?

Chemistry
1 answer:
ella [17]3 years ago
7 0

Answer:

120 gram sample of a radioactive element, how many grams of that element will be left after 3 half-lives have passed? If you have a 300

Explanation:

Hope this helps!

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Which planets distance from the sun is 778,600,000
Nastasia [14]

Jupiter, I believe?

3 0
3 years ago
A rock has a mass of 416 grams and when placed in a beaker of water, the level rose to 523 mL. The beaker was originally filled
vagabundo [1.1K]

Answer:

The answer is

<h2>2.55 g/mL</h2>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume} \\

From the question

mass = 416 g

volume = final volume of water - initial volume of water

volume = 523 - 360 = 163

volume = 163 mL

The density is

density =  \frac{416}{163}  \\  = 2.552147239...

We have the final answer as

<h3>2.55 g/mL</h3>

Hope this helps you

6 0
3 years ago
Most of the energy from a lower trophic level is converted to
frutty [35]
The correct answer to the question above is heat. Most of the energy from a lower trophic level is converted into heat. When an organism from a higher trophic level consumed an organism from a lower trophic level, it is mostly heat that is being converted to.
5 0
3 years ago
What happens if metal is in acid?<br> I'm having a blank
igomit [66]

Answer:

it dissolves or disintegrates

Explanation:

5 0
2 years ago
As the temperature of one of the four liquids increases, the vapor pressure will
s2008m [1.1K]

Answer:

a) increase exponentially.

Explanation:

The vapor pressure is depend only on temperature.

The vapor pressure of liquid does not depend upon amount of liquid. For example whether the liquid is 50 g or 30 g its vapor pressure will remain same according to the temperature.

The temperature and vapor pressure have exponential relationship. As the temperature of liquid increases its vapor pressure also goes to increase. When the temperature of liquid goes to decrease its vapor pressure also decreases.

The change in vapor pressure of substance when temperature changes is given as,

ln P₂/P₁ = ΔH(va)/R (1/T₁ - 1/T₂)

7 0
3 years ago
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