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cricket20 [7]
4 years ago
5

hi, 100 points, , will also mark brainly-ist (what's the boiling point of water) ((you don't need to answer that))​

Chemistry
1 answer:
BaLLatris [955]4 years ago
6 0

Answer:

212 degrees F, and 100 degrees C.

Explanation:

If the temperature is held constant (which requires some heat input, since evaporation cools things) the liquid will all evaporate. If the temperature is much above 212 F, the water will boil. That means that it wont just evaporate from the surface but will form vapor bubbles, which then grow, inside the liquid itself.   :)

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The amount of energy that is transferred when one mole of a compound is formed from its component elements in their standard sta
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3 years ago
How would you prepare 1 liter of .030 m copper 2 sulfate pentahydrate?
Ierofanga [76]
Answer is: dissolve 74,9 grams CuSO₄·5H₂O in one liter volumetric flask.
V(CuSO₄·5H₂O) = 1 L.
c(CuSO₄·5H₂O) = 0,30 mol/L.
n(CuSO₄·5H₂O)  = V(CuSO₄·5H₂O) · c(CuSO₄·5H₂O) .
n(CuSO₄·5H₂O) = 1 L · 0,3 mol/L.
n(CuSO₄·5H₂O) = 0,3 mol.
m(CuSO₄·5H₂O) = n(CuSO₄·5H₂O) · M(CuSO₄·5H₂O).
m(CuSO₄·5H₂O) = 0,3 mol · 249,7 g/mol.
m(CuSO₄·5H₂O) = 74,9 g.
5 0
3 years ago
What amount of acid is esterified if a mixture consist initially of 1.0mole of ethanoic acid,1.0mole of ethanol and 1.0mole of w
ale4655 [162]

Answer:

0.54 mole

Explanation:

                                     CH3COOH    CH3CH2OH   CH3COOCH2CH3    H2O​

Initial concentration   1.0 mole         1.0 mole                0 mole                  1.0mol

Change                          - x                   - x                      + x                          + x  

Equilibrium                   (1.0 - x)          (1.0 - x)                   x                       (1.0 + x)

K = [CH3COOCH2CH3]*[H2O​]/[CH3COOH]*[CH3CH2OH]

x*(1.0+x)/(1.0-x)(1.0-x) = 4.0

x+x²=4*(1-x)²

x+x² = 4(1² - 2x + x²)

x + x² = 4 - 8x + 4x²

4 - 8x + 4x²- x² - x= 0

3x² - 9x + 4 = 0

x=2.5 , x=0.54

2.5 mole of acid cannot be esterified, because there is only 1.0 mole of acid,

so answer is 0.54 mole.

3 0
4 years ago
Which compound would produce an acidic aqueous solution? Which compound would produce an acidic aqueous solution? RbH C2H2 PH3 C
Anvisha [2.4K]

Answer:  Option (e) is the correct answer.

Explanation:

A compound that will dissociate in water or an aqueous solution to give hydrogen ions(H^{+}) is known as an acidic substance.

When RbH is dissolved in aqueous solution then it dissociates as follows.

RbH \rightarrow Rb^{+} + H^{-}.

C_{2}H_{2} is non-polar in nature. So, it will not dissociate into ions when dissolved in an aqueous solution.

PH_{3} will also remain neutral and does not dissociate into ions.  

CaH_{2} when dissolved in water then it dissociates as follows.

CaH_{2} \rightarrow Ca^{2+} + 2H^{-}  

Whereas when HF is dissolved in aqueous solution then the reaction will be as follows.

HF \rightarrow H^{+} + F^{-}

Thus, we can conclude that out of the given options HF is the compound which will produce an acidic aqueous solution.

4 0
4 years ago
Read 2 more answers
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lina2011 [118]

Answer:

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