Chemistry

Did I do this chm question correctly? Grams to molecules

How many molecules are in 3.1x10^-1 g of C9H40 Formula Weight =176 0.31/176 = 0.002 mol 0.002 x 6.022x10^23= 0.01204x10^23 =1.204x10^21-As point out, the molecular weight cited doesnt fit with you

What is the name for H4OH

Its a non-existent compound. No such thing.-that poison, is not possible to be conpound

How to make 50 ppm dye in 500ml? Fyi, my dye has molecular weight of 319.85 g/mol.

Plus, can you show me how to calculate it? Please. Teach me.-ppm does not rely on molar mass 1ppm=1mg per kgor 1 mg/Lif water is used. 50ppm = 50 mg in 1 L or 25mg in 500 ml 0.025g/500ml-50mg/1000ml

Solution Stoich (HELP please ASAP ASAP ASAP)

A stock solution of CuSO4•5H2O was prepared by dissolving 1.6503 g of copper (II) sulfate pentahydrate in sufficient water to make 250.00 mL of solution. a) Calculate the molarity of the stock solutio

I neeeeeeddd help pleeaassee

A) balanced chemical equation for the formation of liquid water from gaseous hydrogen and gaseous oxygen? B) balanced equations of the formation of liquid water from gaseous hydrogen and gaseous oxyg

How to determine whether carbon dioxide has been produced in a chemical reaction

Im going to undergo an acid-carbonate reaction for science class but Im unsure how to show that carbon dioxide was produced in the reaction for my write-up. Any ideas?-Collect the gas that is produced

What is the difference between reacting copper with concentrated nitric acid and dilute nitric acid

I know one produces nitrogen monoxide and the other one produces nitrogen dioxide, but what one is which and why does it occur? (Why does it occur and why does it only occur with copper?) Thanks-3Cu

Yr 11 chemistry help!

1. Write an equation for the production of carbon dioxide from the addition of hydrochioric acid to sodium hydrogencarbonate. 2. write an equation fro the production of C02 from fermenting glucose 3.

Write the chemical equation for the reaction of CH3NH3+ with water. Include physical states and ...

a. Write the chemical equation for the reaction of CH3NH3+ with water. Include physical states and use equilibrium arrow in your answer. b. Write the acidity constant expression for a. c. Write the ch

I'm confused on how to calculate the average atomic mass of this element

Im given the element Neon. It gives me three isotopes of Neon: Ne-20, Ne-21, Ne-22. It then gives me each isotopes Atomic Mass. Then, Im given the natural abundance of each isotope. When Im calcula

HSO4- is amphoteric.

a. Write the equation for the reaction that takes place between HSO4- and the acid HCl. Use equilibrium arrow in your answer. b. Write the equation for the reaction that takes place between HSO4- and

What is chain branching

What is chain branching in chemistry and why does it happen? Ive tried looking at different sites and in books but I cant seem to find one that is easy to understand. Please help!-Chain branching usua

Redox reaction help please

H (aq) + Cr2O7^2- (aq) + C2H5OH(l) = Cr^3+ (aq) + CO2 (g) + H2O(l) I know that oxidation is the loss of electrons and reduction is the gain or electrons, also I know that in this example Cr is reduce

Can you explain balancing equations!

Hi! Can you please help me?! So like you have to have the same number of atoms in each element? Or what? And to do this you use coefficients? Right? Does that make sense? Please help!-I have some tuto

Are the molar masses of these substances similar or very different? How is molar mass related to boiling point

HCl: 36.5 H2S: 34.1 F2: 38.0 Ar: 39.9 Are differences in molar mass sufficient to explain the differences in boiling points?-Differences in molar mass arent always sufficient to explain the differenc