Chemistry

Consider the following equilibrium:

Consider the following equilibrium: 2NO(g) + O2(g)2NO2(g) Given that we start with 0.037M NO(g) and 0.037M O2(g) AND end with 0.015M NO2, what is the equilibrium constant for this reaction and what

HELP IN CHEMISTRY PLEASE !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

1.) what is the change in the atomic number when an atom emits a beta particle ? a.) decrease by 2 b.) decrease by 4 c.) increase by 2 d.) increase by 4 2.) what is the change in atomic number when a

AP Chemistry Problem. Please someone help!! Not Hard!

Your 1.1 cubic foot GE microwave oven generates 1100 watts of microwaves at a frequency of 2.45 GHz. a. What is the wavelength of the microwave radiation being emitted? b. How many photons per second

2 characteristics of a base and two characteristics of an acid

help please-These answers depend on whether the base and acid are Bronston-Lowery or Lewis Acid: (BL) Has a hydrogen to donate, (L) Can accept an electron pair, (both) pH Base: (BL) Can accept a hydr

The phrase "like dissolves like" is frequently used in describing solutions. What is "like"

a)their densities b)their heats of formation c) their molar masses d) their molecular polarities-d) their molecular polarities ionics dissolve in polar water. or DMSO non ionic covalent organics dis

Carbon Dioxide Chemistry Question

Bubbles rise in a newly opened bottle of a carbon beverage. This action is explained by the fact that carbon dioxide is less soluble in water when a) pressure is increased b) pressure is reduced c) t

Challenge for Chemistry lovers.....

How to calculate the time taken by an electron to complete one revolution in any given orbit. OR The actual question in the Q-paper was: In an atom two electrons move around the nucleus in circular o

Chemistry Question about Moles and Solutes

If one mole of each of these solutes is added to the same amount of water, which solution has the highest boiling point and lowest freezing point? a) MgSO4 b) MgCl2 c) AlCl3 d) KI-The answer is the c

Use Boyle's law to find P1... read on please

Use Boyles Law to find P1 given: V1= 2X10^5 mL V2= 2.7X10^3 mL P2= 178 mm Hg Answer in units of mm Hg please! *I tried this problem like 4 times and still got it wrong, please help!-P1V1 = P2V2 P1 *

Using Charles Law, Find T2 when given... read on for more info plz

Hey, im having trouble with my Chem HW, i tried this problem a bunch of times and for some reason keep getting it wrong, can you help? Thanks! The pressure on a gas at -87 degrees C is doubled, but it

URGENT PLEASE! Stoichiometry Question..!

1) 1.56g of As2S3,0.140g of water,1.23g of nitric acid,and 3.50g of sodium nitrate are reacted to the following equation:3As2S3+4H2O+10HNO3+18NaNO3--------------… What mass of H3AsO4 is produced?-3 As

URGENT! Mass in g of C3H7Cl produced if 400 g of propane react w/ excess Cl gas according to equation below

Mass in g of 1-chloropropane (C3H7Cl) produced if 400 grams of propane react with excess Cl gas according to the equation C3H8 + Cl2 --> C3H7Cl + HCl? PLEASE ANSWER SOON.-C3H8 + Cl2 → C3H7Cl + HCl (

A solution that is formed by combining 400 mL of 0.025 molar HCl with 600 mL of 0.015 molar NaOH has a pH of

The reaction:HCl(aq) + NaOH(aq) --> NaCl(aq) + H2O(l) First you need to know the moles of each constituent added. moles HCl = Volume(in L) x molarity(in mole/L) = (0.400 L)(0.025 M) = 0.0100 mole HC

Help with a few chem questions

Can someone answer these for me? =) 1) Molarity is: A) the number of moles of a substance in a sample B) the concentration of a solution in grams per litre C) the concentration of a solution in mol

Which of these is a non-electrolyte when dissolved in water

a) acetic acid b) sodium chloride c) sulfuric acid d) sodium hydroxide e) ethanol-E. Ethanol