2 years ago

I need help with that box

Chemistry

1 answer:

valkas [14]2 years ago

6 0

I hope this helps.

the first line would be SN, 50, 50, 69

second line would be PT, 78, 78, 117

third line would be MO, 42, 42, 54

fourth line would be NI, 28, 28, 31

fifth line would be U, 92, 92, 146

You might be interested in

How many moles are there in 5.699 liters of neon gas at STP? Express your answer with the appropriate significant figures and un

Svetradugi [14.3K]

Answer:

The number of moles: 0.25442 moles

Explanation:

One mole of Neon gas will occupy 22.4 at STP.

5.699L consists of $\frac{5.699}{22.4}$ = 0.25442 moles.

4 0

2 years ago

Reaction 1

vovangra [49]

Sgshjagajavajsfysbsjavajababhahshs

5 0

2 years ago

Photochemical smog results from the interaction of pollutants in the presence of

atroni [7]

Water vapor in the air

5 0

2 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.

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