Answer:
Explanation:
Blood is an essential part of the circulatory system in the human body. The main function of blood is that it helps to transport materials to different parts of the body where they are need. Blood helps carry waste materials of metabolism from where they are produced to the excretory system. It helps carry oxygen round the body system and it takes out carbon dioxide that is not needed by the body.
Some part of the blood sees to fighting foreign bodies in the system. They are called whiteblood cells. There is no immune system without the white blood cells.
Answer:
Explanation:
P = 2.35g
Cl= 0.539 g
% MASS = mass of X/ mass of a compound
% mass of P = 2.35 / (2.35+ 0.539) = 81.34%
% mass of Cl = 0.539 /(2.35+ 0.539) = 18.66 %
To find the molar mass<span> of </span>Ba(NO3)2<span>, determine the </span>molar masses of all the atoms that form it. The Molar mass for Barium nitrate is <span>261.337 g/mol.</span>
Answer: Three samples that can be used to test for poisons are blood samples, hair samples, and gastric contents samples.
Advantages of hair samples area is that it can indicate past exposure to toxins or poisons and also provide information on how long the exposure has been going on. Poisons can sometimes be detected in hair for long periods of time. The advantages of gastric contents samples area is it shows whether the poison was digested or not. An advantage of blood samples is that it’s the most useful toxicological samples. The disadvantage of hair samples is that the results can be tainted by external sources. The disadvantage of gastric content samples is that it doesn’t always show which toxin was digested. The disadvantage of blood samples is if taken near or from the heart it may have artificially high levels of toxins that wouldn’t reflect the amount distributed throughout the body at the time of death.
Explanation:
Answer:
The answer to your question is 2 molecules
Explanation:
Unbalanced chemical reaction
H₂(g) + N₂(g) ⇒ NH₃ (g)
Reactants Elements Products
2 H 3
2 N 1
Balanced chemical reaction
3H₂(g) + N₂(g) ⇒ 2NH₃ (g)
Reactants Elements Products
6 H 6
2 N 2
From the balanced chemical reaction we conclude that when 3 molecules of hydrogen react with one molecule of nitrogen, 2 molecules of ammonia will be formed.
