Other Chemistry Answers

conversion of system International is simpler than American engineering system.why?

1) 4g of NaOH is mixed with 1.5L of a solution which has a pH of 1.54, what is the new pH?
2) A solution of 4ml of LiOH of 0.5M and 15ml of 0.1M of H are mixed, what is the new pH?
Pls. answer in complete, your answer is very helpful to me tnx...

How many hydrogen atoms are in 0.1731 mol of H2SO4?

How many molecules are in 71.9 grams of Cl2?

is it true or false that the number of electrons in an orbital depends on the orbital's shape?

(A) What is the system that is buffered?
The system being buffered is Vitamin C also known as Ascorbic Acid.
(B) What is the pH of the system?
3 (5% sol.)
(C) What compounds are responsible for the buffered system?
(D) What benefit does being at this pH serve?
Creating an ascorbate also makes naturally acidic Vitamin C buffered, or pH neutral. This is important for people who have acidic systems and generally makes the vitamin easier to assimilate into the system
(E) How could this system be shifted?
(F) What happens if the pH is shifted 1 pH unit either way (acidic or basic)?


I been stuck on C, E and F

k) Suppose your instructor handed you a bottle of sulfuric acid of unknown concentration. The chemistry department was considering using it for a summer program for elementary students to test rock samples to see if they contain limestone. However, they don't want to give it to the kids if it is too strong, and noone in the department was willing to drop some on their skin, and all the graduate students and TA's were already guinea pigs in other experiments, and the department did not want to compromise the data from that research in any way. So, the task falls to you, the eager undergraduate student.
(2 pts.) First, explain, using a chemical equation, and then describing it, how sulfuric acid could test for the presence of limestone. What specific reaction would be taking place, and what easily noticeable phenomenon would you be looking for when doing this test? Why?

Answer:

[ii] (3 pts.) Suppose you take a 25.00 mL sample of this sulfuric acid solution. You then titrate it with a 0.1322 M potassium hyd

Write a balanced equation and an ionic equation for the reaction that occurs when each substance reacts with a hydrochloric acid solution. Include state symbols.

how many grams of Cl are in 235 grams of CaCl2

show whether seawater of the composition given in the table satisfies electroneurality.( in order to show electro neutrality, the sum of the moralities of the cations multipled of the anions multipied by the charge of the anions)