Answer:
2.60 M
Explanation:
M1V1=M2V2
Where
M1 = ?
V1 = 20.9 mL
M2 = 2.548 M
V2 = 21.39 mL
(?)(20.9 mL) = (2.548 M)(21.39 mL)
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(20.9 mL) (20.9 mL)
? = (54.50)/(20.9) = 2.60 M
(Side Note: the mL cancel each other out to leave M units only)
Answer:
New volume is 271 mL
Explanation:
To determine the volume for a gas, when the pressure remains constant we follow this ratio:
V₁ / T₁ = V₂ / T₂
Remember the Ideal Gases Law → P . V = n . R . T
That's why we propose V / T
We need to determine the Absolute T°
25°C + 273 = 298 K
50°C + 273 = 323 K
We convert the volume from mL to L → 250 mL . 1L / 1000 mL = 0.250L
Now we replace: 0.250L / 298K = V₂ / 323K
V₂ = (0.250L / 298K) . 323K → 0.271 L
In conclussion volume of a gas will be increased, while the temperature is also increased and the pressure remains constant.
Answer: Molarity is the concentration of x moles of solute in 1 L
Answer:
Salt is the pure substance out of them all.