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3 years ago

Write a balanced chemical equation for the reaction of aqueous solutions of lead(II) nitrate and potassium iodide

Chemistry

1 answer:

Wittaler [7]3 years ago

6 0

Answer: Pb(NO3)2(aq) + 2KI(aq) —> PbI2(s) + 2KNO3(aq)

Explanation:

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Dvinal [7]

Answer:

Parallel Circuit

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3 years ago

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Can you please help me?

lorasvet [3.4K]

Answer:

60 moles of NaF

Explanation:

The balanced equation for the reaction is given below:

Al(NO3)3 + 3NaF —> 3NaNO3 + AlF3

From the balanced equation above,

3 moles of NaF reacted to produce 1 mole of AlF3.

Therefore, Xmol of NaF will react to produce 20 moles of AlF3 i.e

Xmol of NaF = 3 x 20

Xmol of NaF = 60 moles

Therefore, 60 moles of NaF are required to produce 20 moles of AlF3.

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3 years ago

I need help I can't chose between A or D

djyliett [7]

That’s a hard one, but honestly i would go with a.

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3 years ago

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A 36.2 g object has a heat capacity of 12.5 J/ oC. How much energy (in J) is required to raise the temperature by 5.73 oC?

iren2701 [21]

Answer:

$\Delta H=2592.825\ J$

Explanation:

The expression for the calculation of the enthalpy change of a process is shown below as:-

$\Delta H=m\times C\times \Delta T$

Where,

$\Delta H$ is the enthalpy change

m is the mass

C is the specific heat capacity

$\Delta T$ is the temperature change

Thus, given that:-

Mass of object = 36.2 g

Specific heat = 12.5 J/g°C

$\Delta T=5.73\ ^0C$

So,

$\Delta H=36.2\times 12.5\times 5.73\ J=2592.825\ J$

$\Delta H=2592.825\ J$

7 0

3 years ago

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1) A block of aluminum has a mass of 40.5

-Dominant- [34]

Answer:

15 ml

Explanation:

$\frac{40,5}{y}=\frac{2,7}{1}$

2,7y=40,5

y=40,5/2,7=405/27= 15ml

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3 years ago