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Rasek [7]
2 years ago
11

If 10.0 liters of H2(g) at stp is heated to a temperature of 546 K what is the new volume

Chemistry
1 answer:
Damm [24]2 years ago
8 0
Answer is: new volume is 19,99 L.
V₁(H₂) = 10,0 L.
T₁(H₂) = 0°C = 273,15 K.
T₂(H₂) = 546 K.
V₂(H₂) = ?
Charles' Law:  The Temperature-Volume Law - <span>the volume of a given amount of gas held at constant pressure is directly proportional to the Kelvin temperature:
V</span>₁/T₁ = V₂/T₂.
<span>10,0 L/273,15 K = V</span>₂/546 K.
<span>V</span>₂ = 19,99 L.<span>
</span>
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When an athlete gets hurt they apply sometimes an instant cold pack to the injury. The instant cold pack works by mixing two che
NeX [460]

Answer:

The evidence showing that there is a chemical reaction taking place is the instantaneous temperature drop once the cold pack is shaken.

Explanation:

When an athlete applies a cold pack to the injury, they shake it before, mixing the water and <em>ammonium-nitrate fertilizer</em> inside the cold pack. This mixing is an endothermic reaction, which means it absorbs heat. In turn, the temperature falls to 35 F for around 10 minutes.

3 0
2 years ago
The equilibrium constant for the reaction sr(s) + mg2+(aq) ⇌ sr2+(aq) + mg(s) is 2.69 × 1012 at 25°c. calculate e o for a cell m
Mariulka [41]
Sr(s)+Mg²+(aq)→Sr²+(aq)+Mg(s)
Number of e-'s transfered are, n=2. Equilibrium constant,
K=2.69×10∧12
ΔG=-2.303RT logK
R=gasconstant=8.314J/mol-k
T= temperature in K= 25 oC=25+273=298K
The value we get ΔG = -70922.3J. But ΔG = -nFE
n= number of e-'s transfered in the reaction =2
F= farady = 96500C
E=potential of the cell is what?
∴E = ΔG.nF
=-(-70922.3)/2×96500)
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8 0
2 years ago
9) After lab, all of Darrel’s friends looked at his data and laughed and laughed. They told him that he was 30.8% too low in the
zaharov [31]
If he was 30.8% too low, it means that he was at 69.2% of the boiling point needed. So 50o C is 69.2% of total.

In order to know what 100% is, you can divide the number by it's percentage and then multiply it by a hundred.

So: 50/30.8=1.623
1.623*100=162.3
So the correct boiling point of the liquid he was working with in the lab is 162.3 oC
3 0
2 years ago
Read 2 more answers
Iron has a density of 7.87 g/cm^3 . What mass of iron would be required to cover a football playing surface of 120 yds x 60 yds
shtirl [24]

Answer:

6.8)39.?:8594+35.;5956:.53)6.494?6(

4 0
2 years ago
568 cm3 of chlorine at 25° C will occupy what volume at -25° C while the pressure remains constant?
Vsevolod [243]

Answer:

474.3 cm³

Explanation:

Given data:

Initial volume of chlorine gas = 568 cm³

Initial temperature = 25°C

Final volume = ?

Final temperature =  -25°C

Solution:

Initial temperature = 25°C (25+273 = 297 K)

Final temperature =  -25°C (-25 +273 = 248 K)

The given problem will be solve through the Charles Law.

According to this law, The volume of given amount of a gas is directly proportional to its temperature at constant number of moles and pressure.

Mathematical expression:

V₁/T₁ = V₂/T₂

V₁ = Initial volume

T₁ = Initial temperature

V₂ = Final volume  

T₂ = Final temperature

Now we will put the values in formula.

V₁/T₁ = V₂/T₂

V₂ = V₁T₂/T₁  

V₂ = 568 cm³ × 248 K /297 K

V₂ = 140864 cm³.K / 297 K

V₂ = 474.3 cm³

6 0
2 years ago
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