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k0ka [10]
4 years ago
9

In which process does a solid change directly into a vapor?

Chemistry
1 answer:
IrinaVladis [17]4 years ago
5 0
In Sublimation, a solid changes directly into a vapor.
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What Celsius temperature, T2, is required to change the volume of the gas sample in Part A (T1 = 23 ∘C , V1= 1.69×103 L ) to a v
andrezito [222]

Answer:

319.15^{o}C[/tex]

Explanation:

When all other variables are constant, we are allowed to use the formula

\frac{T_{2} }{V_{2} } = \frac{T_{1} }{V_{1} } \\Which can be rewritten as T_{2} = \frac{T_{1} V_{2} }{V_{1} }if you make T2 the subject of the formula. This formula is true only if temperature is in Kelvin not degrees Celsius so T1 must be converted to KelvinNow to calculate T2[tex]T_{2}= \frac{296.15K*3.38.10^{3}L }{1.69.10^{3}L }= 592.3K = 319.15^{o}  C

3 0
3 years ago
The vertical columns on the periodic table are called groups, how many groups are there on the periodic table?
Kitty [74]
8 groups, 1 to 7 and most people call group 8 group 0 because the noble gases in group 0 have the outer electron shell full, so for example argon has 18 electrons, so it’s structure is 2.8.8 with its outer shell full. Also the number of the last shell defies what group it’s in, for example sodium is in group 1 so it’s structure is 2.8.1. Hope this helps.
5 0
4 years ago
An acid is hydrogen and one or more nonmetals. <br><br> Select one:<br> True<br> False
dlinn [17]

Answer:

true

Explanation:

hope this helps!

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6 0
2 years ago
Combustion of methanol displayed formula???
Andrew [12]

Answer:

reee, here is your answer.

Explanation: CH3OH(l) + 3O2(g) rightarrow CO2(g) + 3H2O(g) CH3OH(l) + O2(g) rightarrow CO2(g) + 2H20(g) CH3OH(l) + 2O2(g) rightarrow 2CO2(g) + 4H20(g) 2CH3OH(l) + 3O2(g) rightarrow 2CO2(g) + 4H20(g) Correct Calculate Delta H degree rxn at 25 degree C.

6 0
3 years ago
How many formula units make up 20.6 g of magnesium chloride (MgCl2)?
irina [24]

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Explanation:

5 0
3 years ago
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