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algol [13]
2 years ago
9

What is the molarity of ZnCl, that forms when 20.0 g of zinc completely reacts with CuCl2, according to the following reaction?

Assume a final
volume of 285 mL

Zn(s) + CuCl2(aq) → ZnCl2(aq) + Cu(s)
Chemistry
1 answer:
laila [671]2 years ago
8 0
1.61m :) use the photo below

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What volume of 0.350 m koh is required to react completely with 24.0 ml of 0.650 m h3po4?
BartSMP [9]

The complete balanced chemical equation for this is:

<span>3KOH  +  H3PO4  -->  K3PO4  +  3H2O</span>

 

First we calculate the number of moles of H3PO4:

moles H3PO4 = 0.650 moles / L * 0.024 L = 0.0156 mol

 

From stoichiometry, 3 moles of KOH is required for every mole of H3PO4, therefore:

moles KOH = 0.0156 mol H3PO4 * (3 moles KOH / 1 mole H3PO4) = 0.0468 mol

 

Calculating for volume given molarity of 0.350 M KOH:

Volume = 0.0468 mol / (0.350 mol / L) = 0.1337 L = 133.7 mL

 

Answer:

<span>133.7 mL KOH</span>

7 0
3 years ago
The H+ ion concentration of a solution is 1 x 10 ^ -5 M. This solution is...
pav-90 [236]

Answer:

To know this

get the pH

pH= -log(H+)

pH= -log(1x10^-5)

pH= 5.

It is Acidic.

Acidic ranges from 1 - 7

It falls within this range

3 0
3 years ago
Isotopes of an element contain the same number of protons but different numbers of _________________.
sp2606 [1]
Neutrons is your answer

7 0
3 years ago
A buret is filled with 0.1517 M naoh A 25.0 mL portion of an unknown acid and two drops of indicator are added to an Erlenmeyer
antiseptic1488 [7]

Answer:

molarity of acid =0.0132 M

Explanation:

We are considering that the unknown acid is monoprotic. Let the acid is HA.

The reaction between NaOH and acid will be:

NaOH+HA--->NaA+H_{2}O

Thus one mole of acid will react with one mole of base.

The moles of base reacted = molarity of NaOH X volume of NaOH

The volume of NaOH used = Final burette reading - Initial reading

Volume of NaOH used = 22.50-0.55= 21.95 mL

Moles of NaOH = 0.1517X21.95=3.33 mmole

The moles of acid reacted = 3.33 mmole

The molarity of acid will be = \frac{mmole}{volumne(mL)}=\frac{0.33}{25}=0.0132M

4 0
3 years ago
2+4 help please i will fail 6th grade
andrey2020 [161]

Answer:

6

Explanation:

lol

4 0
2 years ago
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