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Bess [88]
2 years ago
15

What is the density of sample?​

Chemistry
1 answer:
Umnica [9.8K]2 years ago
4 0

Answer:

19

Explanation:

count up from 18 and go up until the arrow

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Radon-222 is a radioactive gas with a half-life of 3.82 days. How long would it take for fifteen-sixteenths of a sample of radon
Fittoniya [83]
Use the formula in terms of half life from the normal exponential functions 
<span>
N(t) = N(0) (1/2) ^ (t/thalf) </span>
<span>
N(0) is the original quantity </span>
<span>
N(t) = quantity remaining at time t </span>
<span>
t is the time </span>
<span>

thalf is half life </span>
<span>
1/16 = (1/2)^(t/3.82) </span>
<span>
16 = 2^(t/3.82) </span>
<span>
4 = t/3.82 </span>
<span>
t = 15.28 days

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
</span>
8 0
3 years ago
What is the relationship between gas particles and pressure​
anygoal [31]

Answer:

For a fixed mass of an ideal gas kept at a fixed temperature, pressure and volume are inversely proportional. Or Boyle's law is a gas law, stating that the pressure and volume of a gas have an inverse relationship. If volume increases, then pressure decreases and vice versa, when the temperature is held constant..

Explanation:

Hope it helps you..

Y-your welcome in advance..

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8 0
2 years ago
Read 2 more answers
What's the definition if blood
ANEK [815]
Blood is a liquid substance flowing through the arteries and veins of the body. In a healthy normal person, approximately 45% of their blood volume are cells (mostly red blood cells, white blood cells and platelets).

hope this helps!
8 0
3 years ago
What is the name for the elements that have some properties of metals and some properties of non-metals
Andrej [43]

Answer: The metalloids are a unique group of elements that share properties of both metals and nonmetals.

Explanation: They're also called the semimetals because of the shared properties of these elements along the dividing line between metals and nonmetals.

8 0
3 years ago
Which statement describes how the binary ionic compound KBr is named?
pshichka [43]

Which statement describes how the binary ionic compound KBr is named? The metal is named first, and the name is unchanged. Which of these is a property of a substance that is composed of atoms that are held together by ionic bonds?

4 0
3 years ago
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