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Komok [63]
3 years ago
13

Which profession is likely to use a radiation shield?

Chemistry
2 answers:
Sidana [21]3 years ago
5 0

Answer:

astronomer

Explanation:

just took the test :)

pantera1 [17]3 years ago
3 0
<span>Which profession is likely to use a radiation shield?
</span><span>A.)dentist
<em><u>B.)astronomer</u></em>
C.)mathematician
D.)geologist

The answer is B: Astronomer

</span>
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What is the molarity of a 0.40 L Solution with 6.2 g KCl?
Kitty [74]

Answer:

Molarity of KCl = 0.03M

Explanation:

Molarity=\frac{W}{GMW} \times \frac{1000}{V(in\,ml)}

Given

Weight of $KCl$ =6.2g

V=0.40 L=400ml

Gram Molecular weight=74.55g

Therefore Molarity = \frac{6.2}{74.55}\times{1000}{400}\\                                =0.03M

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Potassium carbonate dissolves as follows:
lara [203]

The 0.25 volume in liters of 1.0 M K_{2}CO_{3} solution is required to provide 0.5 moles of K(aq).

Calculation,

The Potassium carbonate dissolves as follows:

K_{2}CO_{3}(s) → 2K(aq) +CO_{3}^{-2} (aq)

The mole ratio is 1: 2

It means, the 1 mole K_{2}CO_{3} required to form 2 mole of K(aq).

To provide 0.5 mole of K(aq) = 1 mole ×0.5 mole /2 mole required by K_{2}CO_{3}.

To provide 0.5 mole of K(aq) ,0.25 mole required by K_{2}CO_{3}.

The morality of  K_{2}CO_{3} = 1 M = number of moles / volume in lit

The morality of  K_{2}CO_{3} =   1 M = 0.25 mole/ volume in lit

Volume in lit = 0.25 mole / 1 M = 0.25 mole/mole/lit = 0.25 lit

learn about moles

brainly.com/question/26416088

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