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yKpoI14uk [10]
3 years ago
5

What are two effects of too much exposure to radiation?

Chemistry
1 answer:
Arada [10]3 years ago
4 0
You can develop acute radiation syndrome or skin cancer.
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12. A helium-filled weather balloon has a volume of 2.4 x 102 L at 99 kPa pressure and a
Luba_88 [7]

Answer:

The answer to your question is 8.74 g of He

Explanation:

Data

V = 2.4 x 10² L

P = 99 kPa

T = 0°C

mass = ?

Process

1.- Convert kPa to atm

P = 99 kPa = 99000 Pa

                   1 atm --------------- 101325 Pa

                    x       ---------------   99000 Pa

                   x = (99000 x 1) / 101325

                   x = 0.977 atm

2.- Convert temperature to °K

°K = 273 + 0

°K = 273

3.- Substitution

      PV = nRT

- Solve for n

      n = PV / RT

      n = (0.977)(2.4 x 10²) / (0.082)(273)

      n = 24.48 / 22.386

      n = 1.093 moles

4.- Calculate the grams of He

          8 g -------------------- 1 mol

           x    -------------------- 1.093 moles

           x = (1.093 x 8) / 1

           x = 8.74 g                      

6 0
3 years ago
Read 2 more answers
What part of a circuit stops the current if it is open
eduard

Answer:

B is the correct answer

Explanation:

Just is

8 0
3 years ago
What elements form chlorides with formula xcl?
dolphi86 [110]
<span>Since chlorine favours a (-1) oxidation state, it forms an ionic bond with group one metals with the formula XCl. All group one metals react vigorously with chlorine gas; and each reaction gets more violent as you move down Group 1 and produces a white crystalline salt. The reaction with chlorine is as follows 2X + Cl2 which gives 2XCl. Where X is an Alkali metal.</span>
4 0
2 years ago
Is carbon monoxide covalent or ionic?
Talja [164]
Covalent since they are both non metals, a metal and a non metal make an ionic bond
7 0
3 years ago
If I have 20g of Sodium, how many moles of Sodium Oxide (Na2O) can be made?
Vika [28.1K]
Mass:20g

Mole=20/[2(23)+16]
=0.32 mil
8 0
3 years ago
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