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ELEN [110]
4 years ago
8

Someone plz hello me ASAP it would be appreciated on question 9 btw

Chemistry
1 answer:
Otrada [13]4 years ago
7 0

Answer:

C.

Explanation:

The water is being stored for the time being, and potential energy is, essentially, defined like that. Once the energy is utilized, it will turn into kinetic energy.

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To what final concentration of NH3 must a solution be adjusted to just dissolve 0.060 mol of NiC2O4 (Ksp = 4×10−10) in 1.0 L of
ololo11 [35]
Given:
0.060 mol of NiC2O4
Ksp = 4 x 10⁻¹⁰
1.0 L of solution
Kf of Ni(NH3)6 2⁺ = 1.2 x 10⁹
<span>NiC2O4 + 6NH3 ⇋ Ni(NH3)6 2+ + 2O4 2- </span>
<span>NiC2O4 ⇋ Ni 2+ + C2O4 2- ...Ksp </span>
<span>Ni2+ + 6NH3 ⇋ Ni(NH3)6 2+...Kf </span>

Ksp * Kf = (4 x 10⁻¹⁰) * (1.2 x 10⁹) = 0.48

K = 0.48 = [Ni(NH3)6 2+][C2O4 2-] / [NH3]⁶<span> 
</span>0.48 = (0.060)² / [NH3]⁶<span> ... (dissolved C2O4 2- = 0.060M) 
</span><span>[NH3]</span>⁶<span> = (0.060)</span>²<span> / 0.48 = </span>0.0036 / 0.48 = 0.0075
NH3 = ⁶√0.0075 

NH3 = 0.44 M

3 0
3 years ago
Consider the balanced equation for the following reaction:
wel

Answer:

The amount of ammonia needed is 33.3 g

Therefore, we can also say 1.96 moles of NH₃

Explanation:

The reaction is: 3CuO(s) + 2NH₃(g) → 3H₂O(l) + 3Cu(s) + N₂(g)

If we see stoichiometry, 3 moles of water can be produced by 2 moles of NH₃. We propose this rule of three:

3 moles of water can be produced by 2 mole of ammonia

Then, 2.94 moles of water, must be produced by (2.94 . 2) /3 =1.96 moles of NH₃

If we convert the moles to mass. 1.96 mol . 17 g /1mol = 33.3 g

4 0
4 years ago
What volume of a 1.0 M HCl is required to completely neutralize 25.0 ml of a 1.0 M KOH? 50.0 ml 25.0 ml 75.0 ml 100 ml 1.0 ml
lys-0071 [83]
No need 4 calculatinh
the volume needed is 25.o ml coz it requires the same amt of vol to neutralise koh
5 0
4 years ago
Use this reaction: 3NaOH + H3PO4--&gt; Na3PO4 + 3H20
uranmaximum [27]
The balanced reaction would be as follows:

<span>3NaOH + H3PO4 --> Na3PO4 + 3H20

We are given the concentration and the amount of the reactants to be used. We use these values for the calculations as follows:

</span><span>How many mL of .225 M NaOH will react with 4.568g H3PO4? 

4.568 g (1 mol / 98 g) ( 3 mol NaOH / 1 mol H3PO4 ) ( 1 L / .225 mol NaOH ) = 0.621 L or 621 mL of .225 NaOH</span>
8 0
3 years ago
1.25 is closer to 1.04 or not ?<br> plz heelp
konstantin123 [22]

Answer:

No.

Step-by-step explanation:

When looking at numbers after the decimal point, think of the numbers as real numbers.

In 1.25, think of the .25 as just 25.

Since this is after the decimal point, it is 25 of a 100.

Now, is 25 closer to 4 or not?

Of course, the number has a great distance from 4.

<em>-kiniwih426</em>

Read more on Brainly.com - brainly.com/question/25432061#readmore

3 0
3 years ago
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