Answer:
it should be that I'm pretty sure it's Newton's law
Answer:
I, II
Explanation:
The circulatory system is made up of blood vessels that carry blood away from and towards the heart. Arteries carry blood away from the heart and veins carry blood back to the heart. The circulatory system carries oxygen, nutrients, and hormones to cells, and removes waste products, like carbon dioxide.
Answer:
The molality is 0.504 molal
Explanation:
Step 1: Data given
Mass of NaCl = 25.00 grams
Molar mass NaCl = 58.44 g/mol
Mass of water = 850.0grams
Step 2: Calculate moles NaCl
Moles NaCl = mass NaCl / molar mass NaCl
Moles NaCl = 25.0 grams / 58.44 g/mol
Moles NaCl = 0.428 moles
Step 3: Calculate molality
Molality = moles NaCl / mass H2O
Molality = 0.428 moles / 0.850 kg
Molality = 0.504 molal
The molality is 0.504 molal
Since the choices are not listed, it would be difficult to identify what is really the answer. The best I could do is to list some of the environmental consequences of the use of nuclear energy. This type of energy is said to have the lowest impact on the environment since it does not have eany emission that would cause air pollution, its waste is isolated from the environment and would only need a small amount of area of land. Although it has the lowest impact, it would still have an effect on the environment. One would be the amount of radiation that will be emitted when a meltdown would happen. This would affect not only the environment but all of the living things including humans. Also, it could cause eutrophication from the wastes. <span />
The chemical formula for ammonia is NH3. So first, you need to find the molar mass of ammonia (how many grams in one mole).
N=14g
H3=3g
So one mole of NH3 is 17 grams, you can divide 82.9 grams by 17 grams to find the number of molecules. The answer should be 4.876 moles (molecules) of ammonia. Hope this helps!