Answer:
The answer is:
A) Chromium
Option D) Calcium
Option E) Osmium
The next ones are: helium and sodium.
Explanation:
The value of kb of cyclohexane in the given question is; kb = 2.82 °C/m
<h3>Understanding Molality of a Solution</h3>
Molality of solution = (Number of moles of C₆H₄Cl₂)/(Mass of Cyclohexane)
Now;
Number of moles of C₆H₄Cl₂ = Mass/molar mass = 2g/147 g/mol
Number of moles of C₆H₄Cl₂ = 0.0136 mol
Molality of solution = 0.0136/(22.5 * 10⁻³ kg)
Molality of solution = 0.6 m
Now, to find kb for cyclohexane, we will use the formula;
T_b(solution) - T_b(solvent) = kb × molality of solution
Thus;
82.39 - 70 = kb * 0.6
kb = (82.39 - 70)/0.6
kb = 2.82 °C/m
Read more about Molality of Solution at; brainly.com/question/10278982
Answer:
One specific HISTORICAL DEVELOPMENT that led to a change in women's roles in the 1920s was the RATIFICATION of the 19TH AMENDMENT.
WHAT WAS THE 19TH AMENDMENT?
It was an AMENDMENT to the U.S. CONSTITUTION that guaranteed women the right to vote - a right they had been
campaigning for, for decades.
As a result of this amendment, WOMEN played a bigger role in POLITICS in the 1920s by electing those who would pass favorable laws for women and related causes.
Explanation:
HOPE IT WILL HELPS
The dependent variable of an experiment always depends on
The independent variable
