chemistry! URGENT

59,905 results, page 44

chemistry

oxidation state of nitrogen in n2h4

chemistry

oxidation state of nitrogen. no2-

chemistry

wat are the main uses of aluminium

chemistry

what is the density of 700 ml of a gas that has a mass of 7 g?

chemistry

How are absorbance and transmission spectra related?

chemistry

What happens to p- toluidine at 225 degres?

Chemistry 11

Which is reactant and product ? 1) C(s)+O2(g)--> CO2 (g) 2) N2(g)+ O2(g) --> 2NO(g)

chemistry

how many significant figures does 221.5 have

chemistry

how many CO molecules do you need to react with water

chemistry

number of mole in 850.5g of zinc

Chemistry

Why does beta radiation take place?

Chemistry

What happens to the beta particle when stopped

ap chemistry

What is the molar mass of glucose, C6H12O6?

chemistry

How do basic and acidic buffers resist pH ?

Chemistry

How do I find the radius of a sulfide ion?

chemistry

How are sugars stored in onions and potatoes?

chemistry

what happen when HS + NO2 +O2 + H2O + BaCl?

chemistry

how many significant figures are there in this measure: 1.000 30

Chemistry

What is the corresponding EM wave for: a) 274nm b) 71nm?

chemistry

explain what is meant by the scientific method

Chemistry

What is the chemical equation for white flour? Thanks!

Chemistry

How can the absorptivity of alumina be varied? Thank you all:)

chemistry

Balance acidic equation PbO2 and Pb

Chemistry

What is the precipitate of K2CrO4 + Al2(SO4)3 ?

chemistry

how do empirical and molecular formulas differ

chemistry

Determine the mass in grams of 2.56*10^24 atoms in Li

Chemistry

Is CaCl2 a solid or is it soluble? I know Ca is is insoluble...

Chemistry

How would I determine the electronegativity of Ethanol?

Chemistry

Is CaCl2 a solid or is it soluble? I know Ca is is insoluble...

chemistry

what is the normality of a. above if the density of the solution is 1.02 g/mL

chemistry

What is the frequency of a photon resulting from the transition of n = 7 ¨ n = 1 ?

Chemistry

Is butyl paraben light sensitive?

chemistry

what is the experimental percent of sulfate in alum?

chemistry

how many C atoms are in 1.50 moles of lactic acid?

chemistry

the weight and charge of and electron is respectively o and -1 1 and 0 1 and -1 0 and +1

chemistry

is CO2 a single atom or molecules?

Chemistry

What is the mass, in grams, of each of the following? 44.3 mol Xe

chemistry

What element has 20 protons and forms a +2 Cation?

CHEMISTRY

iatrochemistry -what is it? -who created it? (facts about him/her)

chemistry

iatrochemistry -what is it? -who created it? cant use wikipedia :s thanks!

Chemistry

What is the enthalpy change when 17.0 g of water is cooled from 36.0°C to 6.40°C?

chemistry

what should i be aware of when heating NH4andCO3

Chemistry

How many carbon atoms are contained in 2.8g of C2H4?

chemistry

what are two resonance structures for SPN

Chemistry

What is the enthalpy change when 19.0 g of water is cooled from 33.0°C to 2.70°C?

Chemistry

What is the enthalpy change when 19.0 g of water is cooled from 33.0°C to 2.70°C?

chemistry

How do you know the number of ions present in a compound.

Chemistry

How is the solubility of a solid affected by temperature?

chemistry

how many oxygen atoms are in 0.25 mole of SO3 ?

chemistry

1.25 g of HClO3 is _________ moles of molecules?

Chemistry

how many moles of Ba(OH)2 are present in 295mL of 0.400 M Ba(OH)2?

Chemistry

Which gas will be made when Mg, Al, or S reacts with HCl?

Chemistry

What is the chemical symbol for bromine vapour?

Chemistry

7.72 g of CuBr2 contains how many bromide (Br-) ions?

chemistry

Lewis dot structure of IF4+

chemistry

What is the lewis dot structure for IBr4-?

chemistry

What is the lewis dot structure of IF2-?

chemistry

what is the percentage of hydrogen in calcium acetate?

chemistry

How many formula units is a 125.8g of Nacl

Chemistry Gd 11

How many product can be produced from 37g of sodium ???

Chemistry

If 20.0 g of N2 has a volume of 4.00 L and a pressure of 6.0 atm, what is its temperature?

chemistry

what is the [H3O+] of a solution that is .01 M in HOCl and .03 M in NaOCl?

chemistry

What is the concentration of hydroxide ions in a solution with a pH of 9.00?

chemistry

how many moles of SO3 will be produced from 9.1 mol O2

chemistry

monoclorur 1 methyl 3 hekzan isomers

Chemistry

Is crystallization a chemical or physical change?

chemistry

The solubility of Fe(OH)2 is 3.00  10-3 g in 2.00 liters at 18°C. What is its Ksp at 18°C?

chemistry

How many moles of negative ions are in 33.7 g of AlF3?

Chemistry

The weak acid HQ has a pKa of 4.89. calculate the [OH-] of .50 M HQ.

Chemistry

Which atom has a larger atomic radius, Ca or Ra? Why?

chemistry

what happens when iron is reacted with iodine

chemistry

How many grams of Au2S can be obtained from 1.17 mol?

Chemistry

Explain why the Noble Gases are unreactive

Chemistry

What is 832 torr converted to atm?

Chemistry

convert @5g of NaCl into moles

chemistry

The ionization potential of N is less than O, but larger than M.

chemistry

How many moles of H2 are in a beaker of 60ml of 2HCL?

Chemistry

how many moles of ozone does the atmosphere hold?

Chemistry

What is the H+ concentration for an aqueous solution with pOH = 4.13 at 25 ?

chemistry

calculate the energy of a wave that has a frequency of 3.5*10^8 m/s

Chemistry

How many moles are there in 569 grams of copper

Chemistry

How many moles are there in 965 grams of boron

chemistry

what is the chemical equation for HCL and NaOH?

Chemistry

Which compound has the formula HC(=O)-O-CH2-CH3?

chemistry

why sugar dissolve in cooking oil

chemistry

does NOCL follow the octet rule

chemistry

How many molecules are 100.00 grams of H2O?

Chemistry

What is the pH when 25 mL of .20 M CH3COOH has been titrated with 35 mL of .10 M NaOH?

chemistry

what is the pH of an .200 M aqueous solution of NaOH?

Chemistry-Emergency

What is the molarity of a 15% solution of Ni3Fe(CN)6?

Chemistry

what is the outer energy level for beryllium?

chemistry

I need an edible suspension HELP!!! :o plz?? :)

chemistry

how many molecules are there in 5 moles of zinc sulfide?

chemistry

How do I determine the type of radiation that has a wavelength of 4.2 nm?

Chemistry

Please help, if you can. If you have a Log (x) = -0.123 ..... What does x = ?

Chemistry

What is the lewis structure for Propanoic Acid?

Chemistry

what is a common physical property of ester?

chemistry

calculate the molarity of 18.0 ml of h2so4 in 2.0l of solution?

chemistry

Prepare 250mL of 2.00%(w/v) CuSO4 from CuSO4x5H2O

Chemistry

Does HCl form a precipitate with NaClO?

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