Chemistry

Caffeine: C8H10N4O2 Consider the molecular formula

Consider the molecular formula for caffeine above. Using only whole numbers with no decimal point, 2 mol of Caffeine has... ?? mol of carbon ?? mol of nitrogen ?? mol of hydrogen and ?? mol of oxyge

What is the chemical formula for sulphuric acid

What is the chemical formula for sulphuric acid ?-Sulphuric acid is H2SO4, it can be called as Hydrogen sulphate,though the term is generally not used.Sulphur dioxide gas is got by burning sulphur,as

Significant figures question

If your number is lets say 1020.3546 and you were supposed to round to something like 2 or 3 significant figures, how would you do it? Could you please gime me other examples as well?-Zeros are the pr

What is the chemical equation for ammonia

anyone?-NH3(g( + H2O(I) ====> NH4OH (ag) The chemical formula for ammonia molecule is NH3. one nitrogen atom is covalently bonded to three hydrogen atoms. Ammina is extremely soluble in water an

Explain this ion question

explain why the ions in sodium hydroxide combine to give the formula NaOH but the ions in beryllium hydroixide combine to give the formula Be(OH)2. The question was in my practice test at school. I g

What is the empirical formula of silver oxide when I have .005792 moles of silver and .005066 moles of oxygen

moles of Ag = .005792 moles of O = .005066 molar ratio Ag : O = 57.92 : 50.66 divide bythe smallest we get Ag : O = 1.143 :1 multiply by 7 Ag : O = 8 : 7 compound is Ag8O7

Acid and base question...

Hi, please explain this question in details... Shampoo used to wash our hair is slightly alkaline. Explain why lime juice can be used as a hair conditional after washing hair with shampoo.(4 marks q

In terms of Ions, how are hydrochloric acid and sulfuric acid similar? And how are they different

both can be completely ionized in water, the difference is sulfuric acid is much stronger than HCl, and sulfuric acid can protonate itself.

What is a capping agent

Please be detailed. What is a capping agent in regards to Organic chemistry and synthesis? Im reading a research article that I have to write a summary paper on, and in reference to further the green

Need help with a molecular equation?? please

The addition of silver nitrate solution, followed by concentration ammonia solution. to a solution of potassium iodide.?-AgNO3 reacts with KI togive a yellow ppt. of AgI .On addition of excess NH3 it

INORGANIC CHEMISTRY: Net Number and Molecular Formula

Can someone please explain this to me? A cubic lattice has the atom X at teach of the corners, Y on each face center, and Z on each edge center. Determine the NET NUMBER of each of these atoms in the

Heterogeneous/homogeneous problem

Im just going through my old chemistry book and studying for my DAT. I want to know what are the answers to this question. Heres a pic of the question below: http://img843.imageshack.us/img843/126/ch

What is the mass range for the potassium hydrogen phthalate necessary to obtain 25 ml titre of 0.15 M NaOH

This is for my chem lab tommorrow! I have no idea how to work this out, please help??-Mol NaOH in 25mL of 0.15M NaOH solution = 25/1000*0.15 = 0.00375 mol NaOH NaOH reacts in 1:1 molar ratio with KHP.

Can someone help with this chemistry concept

Statement:A solid that is insoluble and floats on a liquid is less dense than the liquid, and it displaces a mass of liquid equal to its own mass. The problem that goes with it is: Approximately wha

What is the difference between water vapor and water

I have to draw a model of the differences of pure water vapor and a mixtur of hydrogen gas (formula H {subscript} 2) and oxygen gas (formula O {subscript} 2). How would I do that?-Im not exactly sure