Answer:
Correct answer is A.
Explanation:
Frequency is the number of oscillations that a wave have per unit time. Since time is measured in seconds, the wave with the highest frequency must register the highest number of oscillation per second. Hence, correct answer is A.
Answer:
Volume is 10.35 L
Explanation:
we are given;
- Initial volume v₁ is 10 L
- Initial pressure, P₁ as 745 mmHg
- New pressure ,P₂ as 720 mmHg
We are required to determine the new volume, V₂
We are going to use the Boyle's law;
According to Boyle's law the volume and the pressure of a fixed mass of a gas are inversely proportional at a constant temperature.
Therefore;
P₁α 1/V
That is;
P = k/V
k = PV
At different conditions;
P₁V₁ = P₂V₂
Rearranging the formula;
V₂ = P₁V₁ ÷ P₂
Thus;
New volume = (10 L× 745 mmHg) ÷ 720 mmHg
= 10.35 L
Thus, the new volume of the gas at the new pressure is 10.35 L
Answer:
b. 12 pesos
Explanation:
Given the following data;
Amount paid = 180 pesos
Amount of pad = 15 pads
To find the cost of each pad, we would use the following expression;
Substituting into the formula, we have;
Cost = 12 pesos
Therefore, the cost of each pad bought by Lorena is 12 pesos.
The molarity of KCl solution made by diluting 75.0 ml of a 0.200M solution to a final volume of 100ml is calculated using the below formula
M1V1=M2V2
M1=0.200 M
V1= 75.0 Ml
V2= 100 ml
M2=?
by making M2 the formula of the subject M2 =M1V1/V2
=75.0 ml x0.200 M/100 Ml = 0.15 M
