Chemistry

Gallium's most common ion

what is Galliums (GA) most common ion, need to know for chemistry homework.-Ga3+ Its in group IIIA along with B, Al, In, and Tl.

Can you balance equations for these reactions

--potassium chloride + silver nitrate yields chloride + potassium nitrate --calcium oxide + water yields calcium hydroxide --sodium hydroxide reacts with hydrochloric acid to form sodium chloride pl

Chemistry Balancing Equations Help

These 2 problems please, and than you. _Ca3(PO4)2 + _H2SO4 ---> _CaSO4 + _Ca(H2PO4)2 and _H3PO4 + _HCL ---> _PCl5 + _H2O-Ca3(PO4)2 + 2 H2SO4 → 2 CaSO4 + Ca(H2PO4)2 H3PO4 + 5 HCl → PCl5 + 4 H2O

How do you calculate pH given ion concentration

I need step by step directions im so confused!!! A. [OH-]= 1.0•10^-2 M B. [OH-]= 1.0•10^-11 M-pH is the negative log of the concentration of the H+ ion. Because you are given the concentrations of t

Latent heat of fusion of Na is 2.6 kj/mole, how much heat would be needed to melt 46 g of N at 98 Celcius

a. 1.3 b. 5.2 c. 49 d. 19 thanks in advance! any help would be appreciated-You do stochiometry first to find how many moles of Na there are: 46g Na divided by 22.99g(molar mass Na) = 2 mol Na then d

Ideal Gas Equilibrium Question

In an ideal gas mixture, the following reaction is studied: 2 N2O(g) + N2H4(g)⇌3 N2(g) + 2 H2O(g) Initially there are 0.10 moles of N2O and 0.25 moles of N2H4 in a 10.0-L container (with no N2 or

What part of this redox reaction am I missing

Im given the following equation: Mn2+(aq) + NaBiO3(s) --> Bi3+(aq) + MnO4-(aq) I wrote and balanced the half reactions and got: 14 H+ + 2 Mn2+ + 5 NaBiO3 --> 5 Bi3+ + 2 MnO4 + 7 H2O which is right. Ho

How to convert a molarity to g/100mL

I have the concentration/molarity of a sample of vinegar (0.096 mol/L) which I need to convert to grams/100mL. If someone could help or explain how to do this that would be great. Thanks!! :)-Molari

Chemistry Conversion volume to mass

How do you convert from volume to mass? My teacher did not teach us this and it is on my test tomorrow....thanks for the help.-Through density. Densitys units are mass/volume so just multiply density

Help with stoichiometry (sp?) easy question yet i can't get the answer?!

An ionic compound forms when aluminum reacts with oxygen gas. If a sample of the compound contains 4.0 * 10^22 aluminum ions and the yield was 100%, how many oxygen molecules reacted with the aluminum

I would just like to ask for chemistry help! Its not numerical or really scientific they are more like puzzles

A.A package of electrochemical cells that will convert chemical energy to electrical energy as the result of an oxidation-reduction reaction. B.Flared cylinders of polystyrene thermal insulation that

What elements are humans composed of

Learning about elements XD I was just wondering what were made of.-carbon,hydrogen,oxygen,nitrogen,sulfur and phosphates-I think oxygen offcourse umm nitrogen umm hydrogen h2o umm well neon I think he

How many valency of ions does KCl solution have

Your question is not clear, but I think you mean: What are the charges on the K and Cl ions. K is +1, and Cl is -1.

Which one of the following changes will cause a DECREASE in the cell voltage

For the galvanic cell Ni (s) | Ni2+ (1 M) || H+ (1 M) | H2 (1 atm) | Pt (s), which one of the following changes will cause a DECREASE in the cell voltage? a) Increasing the pressure of H2 to 2.0 at

What is neutralization equivalent and what is normality

In plain English ... what is normality? What is neutralization equivalent? How can we explain this with minimal science talk?-Put simply, normality deals with the number of ions in solution that can