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finlep [7]
3 years ago
12

How many atoms, in PCI3, and how can I tell

Chemistry
1 answer:
Leya [2.2K]3 years ago
8 0

Answer:

one Phosphorus atom and three Chlorine atoms, having a chemical formula of PCl3. It is a volatile liquid that reacts with water and releases HCl gas. It is a toxic compound but is used in several industries.Jul 23, 2021

Explanation:

i am so srry if this is wrong

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Assuming the boiling point increased by 2 °C, what is the approximate molality of NaCl when the video ends? Kbp(water) = 0.512
makkiz [27]

Answer : The molality of NaCl is, 1.95 mol/kg

Explanation :

Formula used for Elevation in boiling point :

\Delta T_b=i\times k_b\times m

where,

\Delta T_b = change in boiling point = 2^oC

k_b = boiling point constant  for water = 0.512^oC/m

m = molality

i = Van't Hoff factor = 2 (for electrolyte)

The dissociation NaCl will be,

NaCl\rightarrow Na^++Cl^{-}

So, Van't Hoff factor = Number of solute particles = Na^++Cl^{-} = 1 + 1 = 2

Now put all the given values in the above formula, we get:

2^oC=2\times (0.512^oC/m)\times m

m=1.95mol/kg

Therefore, the molality of NaCl is, 1.95 mol/kg

6 0
3 years ago
Why is it necessary to know the temperature of the reactants and the products of a reaction in order to determine change in the
Crank

Answer:

Free Energy (G) can either increase or decrease for a reaction when the temperature increases. It depends on the entropy (S) change. The change in a quantity is represented by the Greek letter delta. ... Hence, when the temperature increases the numeric value of the free energy becomes larger.

Explanation:

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3 years ago
A sound wave is traveling at 6,420 m/s and has a frequency of 600 Hz.
kolbaska11 [484]

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astraxan [27]
The empirical formula for a compound that has
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Explanation:

done

..................

3 0
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