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ikadub [295]
3 years ago
10

How many silver atoms are there in 3.76g of silver?​

Chemistry
1 answer:
melomori [17]3 years ago
5 0
3.76 grams of Silver ( 1 mole Ago/ 107.9 grams) (6.022 X 10^23/1 mole Ag)

2.10 X 10^22 atoms of Silver
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What is the Ka of a 0.0796 M solution of nitrous acid (HNO2) with a pH of 2.95?
Vadim26 [7]

Answer:

Coefficient = 1.58

Exponent = - 5

Explanation:

pH = 2.95

Molar concentration = 0.0796M

Ka = [H+]^2 / [HA]

Ka = [H+]^2 / 0.0796

Therefore ;

[H+] = 10^-2.95

[H+] = 0.0011220 = 1.122 × 10^-3

Ka = [H+] / molar concentration

Ka = [1.122 × 10^-3]^2 / 0.0796

Ka = (1.258884 × 10^-6) / 0.0796

Ka = 15.815 × 10^-6

Ka = 1.58 × 10^-5

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Exponent = - 5

4 0
3 years ago
If the amount of Adams if each type on the left and right sides of a reaction difference what must be done to balance it
Ivanshal [37]

Hey there,

Your answer would be

Coefficients are placed in front of the reactants and/or products

Hope this helps,

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8 0
3 years ago
Plz I need help on this Science question I don’t understand
sashaice [31]

Answer:

A

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7 0
2 years ago
If you start with 6 moles of N2 and 6 moles of H2 (meaning you won't have enough of 1 of the ingredients), how many moles of NH3
Ivahew [28]

Answer:

4molNH_3

Explanation:

Hello there!

In this case, according to the given information it will be firstly necessary to set up the chemical equation taking place:

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We infer we need to calculate the moles of NH3 by using both of the moles of N2 and H2 at the beginning, in order to identify the limiting reactant:

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Thus, since hydrogen yields the fewest moles of ammonia, we conclude that we are just able to yield 4 moles of NH3.

Regards!

8 0
3 years ago
An element has an atomic mass number of 16 and an atomic number of 7
Kitty [74]

Answer: Nitrogen

Explanation: Nitrogen has an atomic number of 7 and an atomic mass of about 14 u

7 0
3 years ago
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