chemistry! URGENT

59,905 results, page 50

Chemistry

Assuming complete dissociation, what is the pH of a 3.73 mg/L Ba(OH)2 solution?

Chemistry

What fraction of glutamate is charged in milk

chemistry

N_v/N_s =Ae ^-change Hv/kT. What is the value of e^? Thanks.

Chemistry

how do i know which compounds to put the roman numeral in?

chemistry

What are the values of [H3O+] and [OH−] for a solution with pH = 3.86?

chemistry

Why is limiting reactant important in stoichemestry?

Chemistry

Is oxygen considered an diatomic molecule?

chemistry

how do u find the percantage composition of an element?

chemistry

If the ground state is 4S^2 , what is the name of the element

Chemistry

What is uncertainty and how can I calculate it ? For example, 0.001 +/- ?

chemistry

What is the combustion of ethane (dicarbon hexahydride)

chemistry

2 nacl (aq) + h2so4 ==> na2so4 (aq) + 2 hci (g)

chemistry

If we have a concentration of H+ at 5 x 10-2 mol/L, what is the pH value? A. -1.30 B. 0 C. 1.3 D. 2.6

chemistry

what the balance equation for solid carbon

chemistry

Except for rubidium and caesium,___

Chemistry

How do you find the [OH-] of a 1x10^-3 M solution of NH4Cl?

Chemistry

what would the product be of HNO3 is heated

chemistry

0.05naoh in 2and half ml naoh?

Chemistry

What is the pH of a solution whose [H3O+] is 9.2× 10^−9 M?

CHEMISTRY.

what would be the VSEPR shape of pyridine?

Chemistry

what is chemical equation for the preparation of siliconcarbide

CHEMISTRY.

what would be the VSEPR shape of pyridine?

Chemistry

Uranium 235 problem that exits

Chemistry

What does each electron outside of a nucleus occupy?

chemistry

what type of bonding is phosphoric acid?

Chemistry 2

CALCULATE THE SOLUBILITY OF CuBr in 0.69 M NH3

chemistry

what is the hybridization of each atom for hydrocyanic acid?

chemistry

what is a complete and incomplete combustion reaction ??

Chemistry

Why organic compound are volatile in nature

Chemistry

Which halogen has the lowest electron affinity?

Chemistry

what is the pH of 0.80 M NaCN? What is the concentration of HCN in the solution?

Chemistry

To remove temporary hardness we may use ?!!!

Chemistry

what three substances are usually electrolytes?

Chemistry

What is the % mass/volume of a 3.00 M solution of NaCl?

Chemistry

What is the % mass/volume of a 3.00 M solution of NaCl?

Chemistry

The pH of a .200M HBrO solution is 4.67. What is the acids Ka?

Chemistry

if you produce 5.7 of H2O, how many liters of O2 will be required?

chemistry

What is the monomer and polymer structure of DNA?

chemistry

what will be the pH of a solution NaOH with the concentration 2,2.10mol

chemistry

If the pH of an aqueous solution is 5, what is the OH− concentration?

chemistry

calculate the no. of molecules in 16g of methane is:

physical chemistry

the no. of atoms in 558.5g of Fe (at wt = 55.85u) is:

Chemistry

What is the mass of a proton? Is it 1g, 1amu, or something else?

chemistry

What is the concentration of a 1:2 dilution of a 0.6 M NaHCO3 solution?

CHEMISTRY

Why does hydrogen electrode have 0.00 V ? or assumed that has 0.00 V ?

chemistry

So i if do 4 x250/100 i will get the answer for the prob?

Chemistry

Calculate PH of 0.05 M solution of ammonium acetate

chemistry

How many grams are there in 2.5 moles of CuSO4.5H2O?

chemistry

kc expression for aluminum+hydrochloric acid

chemistry

How many moles of atoms are there in 32g of sulfur?

chemistry

ferusamoniumsulphate reaction with sulphuric acid

chemistry

explain how to prepare a 200cm,0.25 ofH2SO4

Chemistry

How do you cope with a fire on your labatory bench?

chemistry

medicine you would find in your house?

chemistry

Given that PVnR=T, solve for n if P = 36.0, V = 8.6, R = 0.08, and T = 200

chemistry

what is the mass of oxygen in a 5.6 g sample of Al(NO3)3.

CHEMISTRY

How do the indicators work , by changing color ?

Chemistry

What is 100mL of water + 45.00g of ice?

chemistry

Identify the functional groups in menthol

chemistry

Discuss how you would separate Fe+3 from Ca2+

chemistry

How many grams are in 2.5 moles of magnesium hydroxide

chemistry

Can you make a 2 carbon molecule of Ketone?

Chemistry

What is the numerical value of one mole?

Chemistry

define pressure how many mm Hg are in 875.1kPa

Chemistry

How many atoms of nitrogen are in 3.00g of N2O5?

chemistry

1/10^-8 in scientific notation. I need help please.

chemistry

What is the pH of a 100g/l solution of potassium cyanide?

chemistry

How many moles of Ca(OH)2 are in 4.10 kg of Ca(OH)2? Answer in units of mol

chemistry

V1= 38.8 n1= 1.60*10^-3 V2= 49.9 n2= ? How do we solve for n2 using avogadro's law?

chemistry

What is the correct formula for calcium nitrate

Chemistry

How do we use 2 indicators to confirm the pH of a solution?

chemistry

how many moles of HCL are contained in 34.7 mL of 8.00 M solution ?

Chemistry

What is the molarity of 35.0 of NaCl in 125 mL of water?

chemistry

263 mL ethanol to its mass in grams

chemistry

How many grams of O2 are contained in a 25.0L sample at 5.20 atm and 28.0C?

chemistry

how many moles of Kl are present in 500 ml of a 0.2 M solution?

chemistry

what is the molality of 18 g NaCl in 200 g of H2O?

CHEMISTRY

What is the pH of a solution with [H3O+] = 1 x 10-9 M? My answer is pH=9. is that correct

chemistry

what wil be the molarity if it increases from 20 c to 100 c?

chemistry

grams of potassium permanganate are in 2.58 moles i don't get it ? help

chemistry

Can somebody please answer my question.

chemistry

Calculate the number of moles in 74.1 g Pb(C2H3O2)2.

chemistry

a radioisotope is called a tracer when it is used to

Chemistry

What are some cons of becoming a pharmacologist?

Chemistry

What is the address of the 11 th electron of magnesium? And how do you determine this?

chemistry

How to prepare 250.0 mL of 0.076M NaOH?

Chemistry

Outline the prepartion of 2-chlorobutane from an alcohol?

chemistry

An equilibrium is dynamic. true or false

chemistry

2) At 298K, what are the molarities of pure water?

Chemistry

What is the enthalpy change when 25 g's of PCl5 are decomposed /\ H= 90

Chemistry

calculate the density of NH3 at S650mm of Hg

chemistry

How many grams of carbon are in 2.42 moles of C2H6

Chemistry Help

WHAT???? which of these are electrolytes?? CH3CH2OCH2OH PCl3 Na2CO3 O2

Chemistry

Calculate the pOH of a 0.410 M Ba(OH) solution.

chemistry

How many kilocalories are required to produce 12.7g of aluminum?

Chemistry

Find the Density of xenon of STP

chemistry

why gasoline wouldn't dissolve in water ?

Chemistry

Calculate the mass of 5.35 mol of iodine

chemistry

what's the lewis dot diagram for methanol?

chemistry

How to prepare 14M Sulfuric acid

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