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Maurinko [17]
3 years ago
8

Methanol (CH3OH) is an organic solvent with a boiling point of 64.5°C. How many grams of mercury(II) bromide (HgBr2, MM = 360.4)

must be dissolved in 542.6 of methanol if the solution has a boiling point of 66.0? The Kb for methanol is 0.86 °C/molal. Assume ideal behavior. (+6 points for submitted work) Your Answer: Answer units​
Chemistry
1 answer:
Softa [21]3 years ago
3 0

Answer:

What is the formula for elevation in boiling point?

Explanation:

The elevation in boiling point (ΔTb) is proportional to the concentration of the solute in the solution. It can be calculated via the following equation. Where, i is the Van't Hoff factor.

...

Boiling Point Elevation Formula.

Solvent Kb value (in oC.kg.mol-1)

Chloroform 3.63

Benzene 2.53

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Empirical formula of a compound if a 50.0 g sample of it contains 9.1g Na ,20.6 g Cr ,and 22.2 g O
denpristay [2]

Answer:

The empirical formula of a compound is Na2Cr2O7

Explanation:

Empirical formula is defined as the lowest ratio of elements present in any substance. In order to determine the empirical formula for a substance containing these elements we have to follow some steps.

1.In the first step, we have to divide the given mass of an element with its molecular mass to convert the mass to moles.

No. of moles of Na=Given Mass of Na/Molecular Mass of Na=9.1/23=0.396

Similarly, the moles of Cr and O in that compound were calculated and found as 0.396 and 1.3875, respectively.

2. Then the next step is to determine the lowest moles and divide all the moles with that lowest mole. As here the lowest mole is 0.396. So on dividing the moles of Na, Cr and O with 0.396, we will obtain the ratio as 1:1:3.5.

3. As the ratio consists of a fractional number, we have to multiply it with the smallest possible integer to convert it to whole number. In this case, if we multiply it with 2 , we will get the ratio as 2:2:7.

Thus, the empirical formula for the compound can be written as Na2Cr2O7.

5 0
4 years ago
Geothermal energy is possible where there is <br><br>a.wind<br>b.oil<br>c.coal<br>d.magma
Leviafan [203]

D magma hope this helps

8 0
4 years ago
If you wanted to make .5 L of a 1 mole/L (M) of MgSO4 solution, how many grams of MgSO4 would you use?
tino4ka555 [31]

Answer:

0.5 grams

Explanation:

8 0
3 years ago
Which of the following transfers carbon from the nonliving environment to the living environment?
ludmilkaskok [199]
Decomposing because it was being eaten to be decomposed into particles.<span />
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How can you use graphs to calculate the displacement of an object?
Gala2k [10]

The area covered by a velocity-time graph

Explanation:

One important graphical method to the solution of displacement of an object is find the area covered by the curve. Displacement is the distance covered by a body during a particular period in time.

  • A velocity-time graph has velocity on the vertical axis and time on the horizontal axis.
  • With acceleration, the curve takes shapes and changes. There are periods of no acceleration,constant velocity, deceleration often observed on a velocity-time graph.
  • Using this, one can determine the displacement of an object looking for the area of the shape the curve covers.

Learn more:

brainly.com/question/568302

brainly.com/question/11220787

#learnwithBrainly

4 0
3 years ago
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