Answer: The final concentration of a solution is 0.350 M
Explanation:
According to the dilution law,
where,
= concentration of concentrated acid solution = 12.0 M
= volume of concentrated acid solution = 35.0 ml
= concentration of diluted acid solution= ?
= volume of another acid solution= 1.20 L = 1200 ml
( 1L=1000ml)
Putting in the values:
The final concentration of a solution prepared by diluting 35.0 mL of 12.0 M HCl to a final volume of 1.20 L is 0.350 M
1-5.037077324x10^23
Use these magic triangles they will help you a lot
Answer:
A)from deep within the earth
Explanation:
B. 1, 1, 1, 2
Explanation:
You only need to balance the NaNO3 on the right. Since there is 2 NO3 on the left, you need to put a 2 in front of the NaNO3 on the right. Everything else is already balanced so the only coefficient needed is 2 in front of the NaNO3.
<u>We are given:</u><u>_______________________________________________</u>
Volume of Gas (V) = 2.5L
Pressure (P) = 1.2 atm
Temperature (T) = 25°C OR 25+273 = 298 K
Universal Gravitational Constant (R) = 0.0821
<u>Solving for number of moles:</u><u>___________________________________</u>
From the Ideal Gas Equation,
PV = nRT
(1.2)(2.5) = n(0.0821)(298) [plugging the given values]
n = [(1.2)(2.5)] / [0.0821*298]
n = 300 / [298*8.21]
n = 0.12 moles
Hence, there are 0.12 moles of Oxygen in 2.5L of 1.2 atm gas when the temperature is 25°C
