Chemistry

How many moles of ag contain 4.49 x 10 to the 23rd atoms ag

One mole contains 6.022x10^23 atomsTherefore 4.49x10^23/6.022x10^23=0.746 or 7.46x10^-1

What are the poducts of the double displacement reaction between aq hydrogen bromide and aq sodium hydroxide

Aq stands for aquaous-You get water and aqueous sodium bromide. HBr(aq)+NaOH(aq)-------------> H2O(l)+NaBr(aq)

Help solve Zero Factor Property: 2x ^2=18x-36

2x ^2=18x-36-2x^2=18x-36 2x^2-18x+36 (move the right side stuff over) Then(2*36) which = 72. You have to find the 2 #s that multiply to get 72 and that add to -18 choices [minus negatives] (1*72, 2*3

The data below were collected for the following reaction:

2NO2(g) + F2(g) -> 2NO2F(g) [NO2 (M)][F2 (M)]Initial Rate (M/s) 0.1000.1000.026 0.2000.1000.051 0.2000.2000.103 0.4000.4000.411 what is the rate constant, k? I figured out that the rate law is Rate

Did I do this simple question correctly

What is the volume of 20.4 kg of a solid. The density of this solid is 4.56 g/cm^3 I converted the mass to be the same units as the density. 20.4kg times 1000g/1kg = 20,400 g Then I did 20,400 g div

How many moles of calcium are in 425 g calcium (ca)

Divide by the molar mass of calcium (found on the periodic table). Rigorously: 425g x 1 mol / 40.078g = 10.060432157 moles Rounded down to proper significant figures: 10.6g-425/40 = 10 5/8 moles.

Calculate the # of molecules in 4.0 mol h20

assuming that you are at standard temperature and pressure (0 celcius and 1 atm) u can use avogadros number. which is 6.02x10^23 molecules. so do (4.0 mol h20)/(6.02x10^23/ 1 mol)= 2.408 x 10^24 mole

IUPAC name for CH3(CH2)2CH(CH2CH3)CH(CH3)(CH2)2CH3

Please help! I got 4-ethyl-5-methyloctane but this doesnt seem right-Well, did you draw it out? Wait, that doesnt even quite make sense. I cant follow how the structure goes. Have another look at you

I have a question regarding a Lewis Structure

How is the lewis structure for OCNCO+ Drawn? I know that it is a bent structure, but Im unsure where the lone pairs are placed in order to produce the bent structure. Thanks for any help!-Double bond

What's the best way to solve these two questions

1) Calculate the percentage composition of iron(II) nitrate 6-water Fe(NO3)2.6H2O, otherwise referred to as “iron nitrate hexahydrate” – the normal form of iron(II) nitrate hexahydrate produced by cry

Organic chemistry aldehydes question

When ethanal reactions with HCN and the organic product is hydrolyzed by aqueous acid, organic compound Y is formed When propanal is heated under reflux with acidified potassium dichromate (VI), orga

Law of multiple proportions

I dont understand how the law of multiple proportions work and the definitions online dont help. Can someone explain how it works with an example please?-It simply means that many elements can combine

In which reactions will the equilibrium shift towards reactants

When the pressure is applied A. C(s) + O2(g) CO2(g) B. CaCO3(s) CaO(s) + CO2(g) C. 2Mg(s) + O2(g) 2MgO(s) D. 2H2(g) + O2(g) 2H2O(g)-According to le Chataliers principle increase in P must result i

At 10 degrees Celcius, the water ionization constant, Kw is 2.9 x 10^-15. What is the H3O+ concentration in...

neutral water at this temperature? a. 2.9 x 10^-15 M b. 1.4 x 10^-15 M c. 3.8 x 10^-8 M d. 5.4 x 10^-8 M e. 1.0 x 10^-7 M Please help =]! Be nice if you showed full working Cheers!-Kw = 2.9 x 10^-15

Volume of a given mass of the ideal gas under the constant pressure is

A. proportional to the temperature in K B. proportional to the temperature in C C. reverse proportional to the temperature in K D. reverse proportional to the temperature in C-A. proportional to the t