3 years ago

Complete the following molecular models to represent balanced equations by

Chemistry

1 answer:

trasher [3.6K]3 years ago

7 0

Answer:

I do not know the Answer I'm just trying to get my point

Explanation:

Thank you

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Due Today!!!

Taya2010 [7]

Answer B hope this helps

5 0

3 years ago

Calcium hydroxide, Ca(OH)2, is an ionic compound with a solubility product constant, Ksp, of 6.5×10–6. Calculate the solubility

kari74 [83]

Answer: The solubility of this compound in pure water is 0.012 M

Explanation:

Solubility product is defined as the equilibrium constant in which a solid ionic compound is dissolved to produce its ions in solution. It is represented as $K_{sp}$

The equation for the ionization of the is given as:

$Ca(OH)_2\rightarrow Ca^{2+}+2OH^-$

By stoichiometry of the reaction:

1 mole of $Ca(OH)_2$ gives 1 mole of $Ca^{2+}$ and 2 mole of $OH^-$

When the solubility of $Ca(OH)_2$ is S moles/liter, then the solubility of $Ca^{2+}$ will be S moles\liter and solubility of $OH^-$ will be 2S moles/liter.

$K_{sp}=[Ca^{2+}][OH^{-}]^2$

$6.5\times 10^{-6}=[S][2S]^2$

$S=0.012M$

Thus solubility of this compound in pure water is 0.012 M

5 0

3 years ago

Looking at this graph below. What was the coldest wind chill?

Natasha_Volkova [10]

Wait! Where is the graph?

8 0

3 years ago

Suppose that 7.25 x 10^22 atoms of a hypothetical element have a mass of 3.88 g. What would be the molar mass (g/mol) of this el

S_A_V [24]

Answer:

32.23 to 4 significant figures.

Explanation:

The molar mass of the element is the mass of 6.022 * 10^23 atoms (Avogadro's number).

So by proportion it is 6.022 * 10^23 * 3.88 / 7.25 * 10^22

= 32.23 to 4 significant figures.

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4 years ago

A Transair plane is flying east at 275 km/h. A Worldair plane is flying west at 275 km/h. Are the two planes flying at the same

finlep [7]

I think thier speed may differ relatively due the movement of wind on each sides. itz very obvious that they change even the time of the day may count

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4 years ago