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3 years ago

Based on your solubility rules which of the following compounds would form a precipitate water?

Chemistry

1 answer:

Novosadov [1.4K]3 years ago

3 0

H2SO4+NaOH=Na2SO4+H2O

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A family pool holds 10,000 gallons of water. How many cubic centimeters is this?

Ierofanga [76]

Answer:

3.785412e+7cm³

Explanation:

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2 years ago

I need help with this question please and thank you

Tcecarenko [31]

The answer should be B

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3 years ago

Balance the Equation <br>with the steps please:)

vivado [14]

Explanation:

Fe2o3+ 3co ---------. 2fe + 3co2

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3 years ago

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It takes 495.0 kJ of energy to remove 1 mole of electron from an atom on the surface of sodium metal. How much energy does it ta

Zigmanuir [339]

Answer:

$\lambda=241.9\ nm$

Explanation:

The work function of the sodium= 495.0 kJ/mol

It means that

1 mole of electrons can be removed by applying of 495.0 kJ of energy.

Also,

1 mole = $6.023\times 10^{23}\ electrons$

So,

$6.023\times 10^{23}$ electrons can be removed by applying of 495.0 kJ of energy.

1 electron can be removed by applying of $\frac {495.0}{6.023\times 10^{23}}\ kJ$ of energy.

Energy required = $82.18\times 10^{-23}\ kJ$

Also,

1 kJ = 1000 J

So,

Energy required = $82.18\times 10^{-20}\ J$

Also, $E=\frac {h\times c}{\lambda}$

Where,

h is Plank's constant having value $6.626\times 10^{-34}\ Js$

c is the speed of light having value $3\times 10^8\ m/s$

So,

$79.78\times 10^{-20}=\frac {6.626\times 10^{-34}\times 3\times 10^8}{\lambda}$

$\lambda=\frac{6.626\times 10^{-34}\times 3\times 10^8}{82.18\times 10^{-20}}$

$\lambda=\frac{10^{-26}\times \:19.878}{10^{-20}\times \:82.18}$

$\lambda=\frac{19.878}{10^6\times \:82.18}$

$\lambda=2.4188\times 10^{-7}\ m$

Also,

1 m = 10⁻⁹ nm

So,

$\lambda=241.9\ nm$

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3 years ago

The substance which does the dissolving in a solution is called the

iVinArrow [24]

Dissolver is the answer i think because that is what disovling means

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3 years ago

Read 2 more answers