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Annette [7]
3 years ago
15

Which of the following particles of matter could be stopped by a thin piece of aluminum foil?

Chemistry
2 answers:
Elan Coil [88]3 years ago
7 0
Beta particles can be stopped by a thin sheet of aluminum foil.
Dafna1 [17]3 years ago
6 0
I am leaning towards C.
Alpha particles do not penetrate clothing
Beta particles only damages skin.
Gamma can go through the body

I know that aluminum foil is tougher than skin so that is why I say C
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. How many grams of water would require 4400 joules
Alja [10]

Answer:

The specific heat of water is 4.18 J/g C.

Explanation:

q

=

m

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s

Δ

T

Never forget that!

2200

=

m

⋅

4.18

J

g

⋅

°

C

⋅

66

°

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5 0
2 years ago
onvert the value of Kc to a value of Kp for the following reaction: N2(g)+3H2(g)⇌2NH3(g) Kc = 0.50 at 400 °C.
ale4655 [162]

Answer:

K_p= 0.00016

Explanation:

The relation between Kp and Kc is given below:

K_p= K_c\times (RT)^{\Delta n}

Where,  

Kp is the pressure equilibrium constant

Kc is the molar equilibrium constant

R is gas constant

T is the temperature in Kelvins

Δn = (No. of moles of gaseous products)-(No. of moles of gaseous reactants)

For the first equilibrium reaction:

N_2_{(g)}+3H_2_{(g)}\rightleftharpoons2NH_3_{(g)}

Given: Kc = 0.50

Temperature = 400^oC=[400+273]K=673K

R = 0.082057 L atm.mol⁻¹K⁻¹

Δn = (2)-(3+1) = -2

Thus, Kp is:

K_p= 0.50\times (0.082057\times 673)^{-2}

K_p= 0.00016

6 0
3 years ago
Molar mass in sulfuric acid
EleoNora [17]

Hey there!

Sulfuric acid: H₂SO₄

H: 2 x 1.008 = 2.016

S: 1 x 32.065 = 32.065

O: 4 x 16 = 64

--------------------------------

                 98.081 g/mol

The molar mass of sulfuric acid is 98.081 g/mol.

Hope this helps!

8 0
3 years ago
To change an object from a liquid to a gas _________ must happen
nignag [31]
Evaporation!
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-sublimation is directly from a solid to a gas
-condensation gas to liquid
4 0
2 years ago
Calculate the weighted average
padilas [110]
Of what?
Attach a link or pic 
3 0
3 years ago
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