Answer:
14
Explanation:
A=pi × r²
153.86 = 3.14 × r²
Divide both sides of the equation by 3.14
it becomes:
r²=153.86÷3.14
r²=49
taking the square root for both sides of the equation
r = 7
and
diameter = 2 × radius
diameter = 2 × 7 = 14
Explanation:
Such problems, including homelessness, teen parenting, substance abuse,, complicate students' efforts to learn. Other social problems, such as vandalism, school violence, and the dropout rate, are exacerbated when students feel alienated from the school structure.
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The mole fraction of the non-volatile solute in the solution is 0.13.
<h3>Mole fraction of solute </h3>
Using law of vapor pressure formula
Mole fraction of the non-volatile solute=Vapor pressure of the pure acetone-Vapor pressure of the solution /Vapor pressure of the pure acetone
Where:
Vapor pressure of the pure solvent (acetone) =266 torr
Vapor pressure of the solution =232torr
Mole fraction of solute = ?
Let plug in the formula
Mole fraction of the non-volatile solute=266-232/266
Mole fraction of the non-volatile solute=34/266
Mole fraction of the non-volatile solute=0.127
Mole fraction of the non-volatile solute=0.13 (Approximately)
Inconclusion the mole fraction of the non-volatile solute in the solution is 0.13.
Learn more about mole fraction of the non-volatile solute here: brainly.com/question/14114576
Answer:
Explanation:
No of postal carrier required each day
= 26942 / 900
= 29.935 ( approx )
= 30
5% of 30 = 1.5
Total postal carrier required each day = 30 +1.5
= 31.5
or 32
