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3 years ago

How many moles are equal to 13.25 g of water, H2O?

Chemistry

1 answer:

PilotLPTM [1.2K]3 years ago

7 0

Answer:

0.736 moles

Explanation:

mole = mass/molecular mass

mole of H2O = 13.25/18.0

mole of H2O = 0.736

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How many moles are in 525 g of ammonia, NH3? 8940.75 M 0.03 M 30.83 M

victus00 [196]

Answer:

30.83 M

Explanation:

17.03052 re in one mole. So, if you multiply it by 30.83, you will get 535 g of ammonia.

In fact, the detailed answer is 30.827009392549122.

3 0

2 years ago

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What volume of 0.152 M KMnO4 solution would completely react with 20.0 mL of 0.381 M FeSO4 solution according to the following n

ANEK [815]

Answer: The volume of permanganate ion (potassium permanganate) is 10.0 mL

Explanation:

To calculate the number of moles for given molarity, we use the equation:

$\text{Molarity of the solution}=\frac{\text{Moles of solute}}{\text{Volume of solution (in L)}}$ .....(1)

Molarity of ferrous sulfate solution = 0.381 M

Volume of solution = 20.0 mL = 0.020 L (Conversion factor: 1 L = 1000 mL)

Putting values in equation 1, we get:

$0.381M=\frac{\text{Moles of ferrous sulfate}}{0.020L}\\\\\text{Moles of ferrous sulfate}=(0.381mol/L\times 0.020L)=0.00762mol$

For the given chemical equation:

$5Fe^{2+}+8H^++MnO_4^-\rightarrow 5Fe^{3+}+Mn^{2+}+4H_2O$

By Stoichiometry of the reaction:

5 moles of iron (II) ions (ferrous sulfate) reacts with 1 mole of permanganate ion (potassium permanganate)

So, 0.00762 moles of iron (II) ions (ferrous sulfate) will react with = $\frac{1}{5}\times 0.00762=0.00152mol$ of permanganate ion (potassium permanganate)

Now, calculating the volume of permanganate ion (potassium permanganate) by using equation 1, we get:

Molarity of permanganate ion (potassium permanganate) = 0.152 M

Moles of permanganate ion (potassium permanganate) = 0.00152 mol

Putting values in equation 1, we get:

$0.152mol/L=\frac{0.00152mol}{\text{Volume of permanganate ion (potassium permanganate)}}\\\\\text{Volume of permanganate ion (potassium permanganate)}=\frac{0.00152mol}{0.152mol/L}=0.01L=10.0mL$

Hence, the volume of permanganate ion (potassium permanganate) is 10.0 mL

3 0

3 years ago

If you put a fish in a cup of chocolate milk and it dies, does that mean it drowned ?

Bingel [31]

No it means that the liquid is way different then water

8 0

3 years ago

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Please help balance this equation _B2Br6 + _HNO3= _B(NO3)3+_HBr

Trava [24]

Answer: B2Br6 + 6HNO3 → 2B(NO3)3 + 6BrH

Equation

B2Br6+HNO3=B(NO3)3+HBr

B=2 B=1

BR=6 BR=1

H=1 H=1

N=1 N=3

O=3 O=9

ANSWER

B2Br6 + 6HNO3 → 2B(NO3)3 + 6BrH

B=2 B=2

BR=6 BR=6

H=6 H=6

N=6 N=6

O=18 O=18

HOPE THIS HELPS

4 0

3 years ago

In Scratch, when making the jump command for a sprite to jump if the space bar is pressed, you place the command outside the hex

Rzqust [24]

Answer:

that would be true you place it outside the hexagon

Explanation:

6 0

2 years ago