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Anuta_ua [19.1K]
3 years ago
6

a 32 gram radioactive sample has a half-life of 2 days how much of the original sample remains after 6 days

Chemistry
1 answer:
DiKsa [7]3 years ago
4 0
<span>After 6 days, only 4 grams of the original amount will remain after 6 days. I have attached an image on how to calculate half-life so you can plug your give value into the formula.

</span><span>
To add, </span>half-life means for<span> a substance decaying exponentially, the amount of time it takes for the amount of the substance to diminish by </span>half.

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6. The first system to classify blood types is known as which of the following?
alisha [4.7K]

The first system to classify blood types is known as<u> A-B-O system</u>.

<u>Option: D</u>

<u>Explanation:</u>

The blood group system "ABO" is the categorizing of human blood centered on the hereditary characteristics of red blood cells means erythrocytes as measured by the presence or absence of A and B antigens on the surface of the red cells. Thus individuals may well have blood type A, type B, type O or type AB.

It was absent until 1900, when Karl Landsteiner established the concept at the Vienna University why some blood transfusions were effective while others were lethal. Landsteiner established the blood group mechanism ABO by combining each of his staff's red cells and serum.

7 0
3 years ago
Uhm so im kinda not the brightest so halp
Hoochie [10]

Answer:

(a) 156.41 (b) 10 and 14 (c) 16

Explanation:

Download pdf
3 0
2 years ago
In the dilution process of a solution, the moles of ___________ does not change.
nevsk [136]
Moles of solute does not change.
8 0
3 years ago
If the ratio of the length of a rectangle to its width is 3 to 2, what is the
borishaifa [10]

Answer:

Length of a rectangle whose width is 4 inches is

<u>6 inches</u>

Explanation:

Ratio of length  to its width is 3 to 2

Let length  = L

Let Width  = B

L: B = 3 : 2 (given)

\frac{L}{B} =\frac{3}{2}

Width ,B = 4

Insert  B in above equation

\frac{L}{B} =\frac{3}{2}

\frac{L}{4} =\frac{3}{2}

cross multiply,

L = \frac{3}{2}\times4

L = 6 inches

Conversion(if required) ,

1 inch = 2.54 cm

6 inch = 2.54 (6)

L = 15.24 cm

8 0
2 years ago
What gas law applies to aerosol cans being stored in a cool place?
svetlana [45]
Don't really know if this is what your asking but P1/T1= P2/T2 should show how the pressure varies with temperature (V is left out because it's constant since the gas is trapped in an aerosol can). As the temperature rises the pressure rises and if it gets too high then the can explodes, which is why it should be stored in a cool place. There's also PV=nRT might be kind of hard to find moles (n) though.


3 0
3 years ago
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