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Minchanka [31]
2 years ago
15

Defenses such as your skin respiratory system, digestive and circulatory system

Chemistry
2 answers:
Mama L [17]2 years ago
4 0

Answer:

T cell

Explanation:

loris [4]2 years ago
4 0
3. T cell
Is the answer.
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4. A 0.51 kg solution contains 87 mg of potassium iodide. Calculate the W/W concentration
anzhelika [568]

Taking into account the definition of percentage composition, the percent composition of potassium iodide in this sample is 0.017%.

<h3>Definition of percent composition </h3>

The Percentage Composition is a measure of the amount of mass that an element occupies in a compound and indicates the percentage by mass of each element that is part of a compound.

To calculate the percentage of composition, it is necessary to know the mass of the element in a known mass of the compound.

<h3>Percentage Composition in this case</h3>

In this case, you know that a 0.51 kg (or 510000 mg, being 1 kg= 1000000 mg) solution contains 87 mg of potassium iodide.

Dividing the mass amount of potassium iodide present in the compound by the mass of the sample and multiplying it by 100 to obtain a percentage value, the percentage composition of potassium iodide is obtained:

percentage composition of potassium iodide=\frac{87 mg}{510000 mg} x100

<u><em>percentage composition of potassium iodide= 0.017%</em></u>

Finally, the percent composition of potassium iodide in this sample is 0.017%.

Learn more about percent composition:

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3 0
2 years ago
A precipitate of lead(II) chromate can be formed using the reaction below.
Marina86 [1]

Answer:

hi

Explanation:

7 0
2 years ago
During which change of state do atoms lose energy
alexgriva [62]

Answer: Atoms lose energy as a gas changes to a solid.

Explanation:

6 0
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What do green plants capture from the sun?
Elodia [21]

Answer:

light energy

Explanation:

Plants use the energy from the sun to photosynthesize and  make food

hope this helps :)

8 0
3 years ago
A student is given two 10g samples, each a mixture of only nacl(s) and kcl(s) but in different proportions. Which of the followi
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a

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