I think the correct answer from the choices listed above is option D. the substances cobalt and barium chloride will not react since cobalt os less active than barium so it does not have enough energy to displace barium in the compound. Hope this answers the question.
Non of the above because protons and neutrons don’t mix with each one there
Answer:
Qualitative
Explanation:
I'm not sure if there was another part to the question, but if you are looking at the color of the sand, that is a qualitative observation.
- Quantitative statements involve numbers. (Ex: The house has 4 bedrooms.)
- Qualitative statements describe characteristics. (Ex: The house is blue.)
The volume of one mole of gas is 22.4 liters at 0 °C and 760 Torr. The volume of the given condition can be calculated using:
(PV)/T = constant
(P₁V₁)/T₁ = (P₂V₂)/T₂
(760 * 22.4)/273 = (792 * V₂) / 321.7
V₂ = 25.3 Liters
The Mr of He = 4
The Mr of Ne = 20
Density of He = 4/25.3 = 0.1581 g/L
Density of Ne = 20/25.3 = 0.7905 g/L
Let x be the fraction of Ne
1 - x is the fraction of He
avg density = sum[(mole fraction * Mr)/V]
0.6048 = (20x + 4(1 - x))/25.3
x = 0.70
Answer: V2= 0.224L
Explanation:
P1=3.55atm, V2= 7.35L, T1= 290, P2= 123atm, V2=?, T2= 307K
Applying general gas equation
P1V1/T1= P2V2/T2
Substitute and Simplify
3.55×7.35/290 = 123×V2/307
V2= 0.224L
