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Ludmilka [50]
3 years ago
13

Write the balanced nuclear equation for β− decay of silicon−32. Include both the mass numbers and the atomic numbers with each n

uclear symbol.
Chemistry
1 answer:
Evgen [1.6K]3 years ago
7 0
32/14 Si -> 32/15 P + 0/-1 b
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Select the answer that completes each statement.
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1 colonists

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3 slaves

4 the House of Burgesses

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An alkaline earth hydroxide, M(OH)2, was taken to lab for analysis. The unknown powder was poured into a flask and swirled in ro
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Answer:

1.77 * 10^-3

Explanation:

From the titration formula;

Let

CA = concentration of acid

CB = concentration of base

VA = volume of acid

VB = volume of base

NA = number of moles of acid

NB = number of moles of base

The equation of the reaction is;

M(OH)2(aq) + 2HCl(aq) -------> MCl2(aq) + 2H2O(l)

So;

CAVA/CBVB= NA/NB

CAVANB = CBVBNA

CB= CAVANB/VBNA

CB= 0.173 * 25.10 * 1/28.5 * 2

CB= 4.3423/57

CB= 0.0762 M

This implies that the solubility of M(OH)2 = 0.0762 M

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So

Ksp = x * (2x)^2

Ksp = 4x^3

x = 0.0762

Ksp= 4(0.0762)^3

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To make use of an ionic hydrate for storing solar energy, you place 510.0 kg of sodium sulfate decahydrate on your house roof. A
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Here we have to get the amount of heat will generate by 510.0 kg of sodium sulfate decahydrate at night assuming complete reaction and 100% efficiency of heat transfer.

510.0 kg of sodium sulfate decahydrate will produce 5.603 × 10⁵ kJ of heat energy.  

The molecular weight of sodium sulfate decahydrate (H₂₀Na₂O₁₄S) 322.186 g/mol.

Thus 510.0 kg of H₂₀Na₂O₁₄S is equivalent to \frac{510000g}{322.186g/mol} = 1582.936 mol of H₂₀Na₂O₁₄S.

Now per mole of H₂₀Na₂O₁₄S will transfer 354 kJ heat.

Thus 1582.936 mol will transfer 1582.936 × 354 kJ =  5.603×10⁵ kJ of heat.

Henceforth, 510.0 kg of sodium sulfate decahydrate will produce 5.603 × 10⁵ kJ of heat energy.  

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Where on the periodic table would This element most likely be found
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