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3 years ago

55 points say 5 "55" times

Chemistry

2 answers:

Aneli [31]3 years ago

3 0

Answer:

5555555555555555555555555555555555555555555555555555555

erica [24]3 years ago

3 0

Answer:

5555555555555555555555555555555555555555555555555555555

Explanation:

5555555555555555555555555555555555555555555555555555555

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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

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

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The stearic acid/hexane solution contains 0.1 g of stearic acid per 1 ml of solution. what is the molarity of this solution? g

melisa1 [442]

Stearic acid formula is CH₃(CH₂)₁₆COOH
The molecular mass of stearic acid is 284.48 g/mol
The mass of stearic acid in 1 ml of solution is 0.1 g
Therefore number of moles in 1 ml is - 0.1 g / 284.48 g/mol = 0.000352 mol
Molarity is number of moles in 1 L of solution
If 1 ml contains - 0.000352 mol
Then 1 L solution contains - 0.000352 /1 x 1000 = 0.352 mol/L
Therefore molarity is 0.352 M

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