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Bezzdna [24]
3 years ago
7

State Hess' law of constant heat summation.

Chemistry
1 answer:
AveGali [126]3 years ago
8 0

Answer:

-74.6 kj/mol

Explanation:

you can see the answer at the pic

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How many moles of ammonium ions are in 125 mL of 1.40 M NH4NO3 solution? ________ moles (give answer with correct sig figs in un
Sholpan [36]

The number of mole of ammonium ion, NH₄⁺ in the solution is 0.175 mole

We'll begin by calculating the number of mole of NH₄NO₃ in the solution. This can be obtained as follow:

Volume = 125 mL = 125 / 1000 = 0.125 L

Molarity = 1.40 M

<h3>Mole of NH₄NO₃ =? </h3>

Mole = Molarity x Volume

Mole of NH₄NO₃ = 1.40 × 0.125

<h3>Mole of NH₄NO₃ = 0.175 mole</h3>

Finally, we shall determine the number of mole of ammonium ion, NH₄⁺ in the solution. This can be obtained as follow:

NH₄NO₃(aq) —> NH₄⁺(aq) + NO₃¯(aq)

From the balanced equation above,

1 mole of NH₄NO₃ contains 1 mole of NH₄⁺

Therefore,

0.175 mole of NH₄NO₃ will also contain 0.175 mole of NH₄⁺

Thus, the number of mole of ammonium ion, NH₄⁺ in the solution is 0.175 mole

Learn more: brainly.com/question/25469095

3 0
2 years ago
In general, which of the following statements about electron-pair geometries is true?
Sergio [31]

Answer:

same

Explanation:

3 0
3 years ago
What is the total volume of solution that was dispensed from this burette? before <br><br> after
monitta
Yeah answer should be .6 ml
6 0
3 years ago
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What is the concentration of the acid in this titration 1.2 m 2.4 m 1.95 m 0.98 m 1.98 m
tresset_1 [31]

Answer:

1.95

Explanation:

Just did the test and it was correct!

5 0
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Which reaction is a decomposition reaction?
Artist 52 [7]

Answer:

See the answer below , please.

Explanation:

In a decomposition reaction, a certain compound is "broken" to give two or more different products.

An example for compound AB, giving as products A and B:

AB -> A + B

In the case of water:

2H20 -> 2H2 + 02,  water decomposes giving Hydrogen and Oxygen

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