<span>It has to be 100mL as total mass = 400g
Moles HCl = 0.05; moles Ba(OH)2 = 0.15
If volume HCl is 100mL then moles HCl = 0.05 and Ba(OH)2 is excess
If 2 moles HCl release 118 kJ then
0.05 moles HCl releases 2.95 kJ
q = cm deltaT
c=4.18 x 10-3 kJ/c.g
DeltaT = q/cm = 2.95/4.18 x 10-3 x 400 = 1.76 degrees rise so final temp = 1.76+ 25</span>
Answer: prokaryotes (single celled micro-organisms/microbes)
Explanation: The first living things on Earth, single-celled micro-organisms or microbes lacking a cell nucleus or cell membrane known as prokaryotes, seem to have first appeared on Earth almost four billion years ago, just a few hundred million years after the formation of the Earth itself.
It's a deep rift valley which runs along the middle of the ridge along almost its entire length.
The trend in life expectancy in india is that it has been rising. But still life expectancy in india compared to the rest of the world is lower because of low economics air pollution and disease
