I am pretty sure the answer is periods. Hope it helps. If not what are the answer choices?
An independent variable is the variable that is changed or controlled in a experiment to test the effects on the dependent variable. A dependent variable is the variable being tested and measured. so like is math. the input variable is the independent variable. the output is the dependent variable because it depends on the input variables.
Answer:
4.444... m/s
Explanation:
Because it increases by 40 m/s in 9 seconds so 40/9= 4.444... m/s
Answer: The vapor pressure of methanol solution at 298K is 107.12 torr
Explanation:
As the relative lowering of vapor pressure is directly proportional to the amount of dissolved solute.
The formula for relative lowering of vapor pressure will be,
where,
= relative lowering in vapor pressure
i = Van'T Hoff factor = 1 (for non electrolytes)
= mole fraction of solute =
Given : 38.5 g of urea is present in 142 g of methanol
moles of solute (urea) = 
moles of solvent (methanol) = 
Total moles = moles of solute + moles of solvent = 0.64 + 4.4 = 5.04
= mole fraction of solute =
Thus the vapor pressure of methanol solution at 298K is 107.12 torr
From the conversion table:
1 meter = 100 cm
Therefore, all you need to do to convert <span>0.0075 meters to centimeters is cross multiplication as follows:
</span>0.0075 meters = (<span>0.0075 x 100) / 1 = 0.75 cm</span>
