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Leno4ka [110]
3 years ago
14

At what temperatures is a reaction that has a positive change in entropy

Chemistry
1 answer:
Setler [38]3 years ago
3 0

Answer:

the answer is A

I made a chart for AP chem if you want to refer to it.

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What are the importance of chemistry?​
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1 year ago
Sugar has a lower melting point than salt because sugar is made of _________.
il63 [147K]
The correct answer is Crystals.

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4 0
3 years ago
What is the osmotic pressure, in torr, of a 3.00% solution of NaCl in water when the temperature of the solution is 45 ºC? Enter
Anit [1.1K]

213034 torr is the osmotic pressure.

Explanation:

osmotic pressure is calculated by the formula:

osmotic pressure= iCrT

where i= no. of solute

c= concentration in mol/litre

R= Universal Gas constant

T = temp

It is given that solution is 3% which is 3gms in 100 ml.

let us calculate the concentration in moles/litre

3gm/100ml*1000ml/1L*1mol NaCl/55.84g NaCl

= 5.372 gm/litre

Putting the values in the formula,                   Temp in Kelvin 318.5K

osmotic pressure= 2*5.372*0.083 * 318.5                 Gas constant  0.083

                              = 284.023 bar or 213018 torr.                 c=  5.372 moles/L                                                                              

                                                                                    i=2 for NaCl

4 0
3 years ago
Which statement is true about the radii of Na and Na+?
kicyunya [14]

Answer:

Na has a larger atomic radius than Na+.

Explanation:

5 0
2 years ago
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