c) 2 mol of Kl in 500. g of water
Colligative properties such as melting and boiling points and osmotic pressure all depend on the amount of solute present. The more the concentration of solute present, the greater the degree of display of colligative properties by a solution
Considering the options given, 2 mol of Kl in 500. g of water has the highest concentration and is expected to freeze at the lowest temperature.
5. force and speed
Nuclear fusion in stars causes the hydrogen atoms to collide with each other and form the heavier helium atom. The fusion reaction is therefore:
₁H² + ₁H² → ₂He⁴
Extreme heat in the center of nebulae causes hydrogen atoms to shed their electrons and collide with one another. The force and speed of the collisions cause the smaller, bare nuclei to fuse into large helium nuclei.
All ancient fossils contain C-14
All living things contain more than one isotope of carbon, the most prominent being, carbon -12 and carbon-14.
Carbon-14 is a radioactive isotope of carbon. When the artifact is retrieved, the activity of carbon-14 in that sample is matched with the carbon-14 activity of a living organism. When this is done, the age of the fossil can easily be accurately calculated.
the correct answer is B) C2H4O2
I'm Pretty Sure the answer is C2O2H. If these are the answer choices.