Chemistry

What chemical theory explains the difference in boiling points used for fractionation

Help would be much appreciated-Fractional distillation is the separation of a mixture into its component parts, or fractions, such as in separating chemical compounds by their boiling point by heating

How to work out number of electrons transferred in a reaction? good chemist required

How many electrons are transferred in the following reaction? The equation would have to be balanced before answering I assume? SO32-(aq) + MnO4-(aq) → SO42-(aq) + Mn2+(aq) Thanks for the help!-Set

Who uses Silver? And what do they use it for? I NEED AN ANSWER ASAP

I NEED to find out who uses silver and what they use it for. I need it to finish my project due tommorrow on silver. I cant find what people use it fo and what it is used for. :/ HELP!!!!-Im guessing

Kinetic Molecular Theory and Le Chatelier's Principle

Using these two above, explain the competing effects of pressure and temperature on the haber process to produce ammonia. Your answer should be at least 1 paragraph. Do not mind about the paragraph,

What does 15 M HNO3 mean?/Does anything react to lead

its for a element project that i have-It means that there are 15 moles (a unit of measure) of HNO3 in one of that substance. M basically just means moles of that solute per liter. Many things react w

Dysprosium can be cut with a knife, but not sodium... but why

Which can be cut with a knife--sodium or dysprosium? was the question... with google, I found out that it was dysprosium, but I dont know why. Thank you in advance.-i have cut sodium using a knife, s

I have a question about finding a volume given molarity and the mass of another reactant

A 14 mg sample of lead (Pb) was consumed orally and completely solublized by an average persons gut such that all the lead went into the blood stream. What is the minimum (exact) volume of a 0.0195 M

Provide two examples of when empirical and molecular formulas are different.

Provide two examples of when they are the same.-The same H2O CH4 Different Benzene (E = CH, M = C6H6) glucose (M = C6H12O6, E = CH2O)-Different: Hexane - Molecular is C6H14, Empirical is C3H7 Octan

Question about Ammonia

What 2 chemicals can I heat together to produce Ammonia? (NH4) Does Nitride and Hydrogen work? Would appreciate any help out there );-First, the formula of ammonia is NH3, not NH4. Then, havent you he

What kind of careers can you have with a degree in chemistry

What about analytical chemistry?-forensic chemist (in the lab; with further on-the-job training can be a crime scene investigator) research chemist (all areas) environmental testing, research, etc. (i

What is the solution to this problem involving heat

The specific heat of aluminum is 0.215 calories per gram per degree Celsius. Calculate the amount of heat required to raise the temperature of 2.00 kg of aluminum by 10.0 degrees.-(2000 g) (10.0 C) (0

I swam in dihydrogen monoxide! Help!

My sister poured DHMO in my pool. Will it burn my skin?-Farhaan, I presume you are trying to ask about what most people would call water?I can only deduce this from that name, which is widely spread a

Chemistry Atomic Structure Problem.

Ordinary chlorine gas has 2 isotopes 35-Cl-17 and 37-Cl-17 in the Ratio 3:1 Calculate the relative atomic mass [atomic weight] of chlorine. (With Working)-Let us consider 4 atoms of a random Cl sample

Chemistry problem, concentration

Here is the question. 1) Indicate the concentration of each ion present in the solution formed by mixing: 3.60g KCl in 75.0ml of 0.250M CaCl2 solution. Assume that the volumes are additive-Ca2+:.25

Enzyme-catalyzed 0.03 M Find the pH at end of reaction.

There is an enzyme-catalyzed reaction in a solution. It is buffered with 0.04 M PHOSPHATE, pH 7.4. 0.005 mole/liter (M) of acid is formed. What is the pH at the END? ---- Apparently I am supposed