chemistry! URGENT

60,827 results, page 61

chemistry

what did amedeo avogadro contribute to the atomic theory?

physics/chemistry

is conductivity a physical or chemical property

chemistry

At which temperature is NaCl more soluble in water, 0°C or 90°C? 0°C 90°C

Chemistry

A detergent solution has a pH of 11.63 at 25°C. What is the hydroxide-ion [OH-] concentration?

Chemistry

How do you draw a lewis dot structure of s3o

chemistry

what are three common ores from which copper can be extracted

chemistry

A Solute That Removes Hydrogen Ions from Solution

Chemistry

What compounds can be formed by the reaction of K2SO4 and BaCI2?

chemistry

calculate the pH of 20.00mL of 2.00 M HCl diluted to 0.500 L

chemistry

what isw the density of N2O,a gas at STP?

chemistry

How do you balance a chemical reaction word equation?!

chemistry

Which has the higher boiling point? (a) CH3CH2CH2CH2CH3 or (b) CH3CH2CH2CH2CH2CH2CH2CH3

chemistry

questions related to yield of chemical reaction.

Chemistry

Calculate the [H+], [OH ‾ ], and the pH of 0.16 M solutions of: hydroxylamine (HONH2, Kb = 1.1 10-8)

chemistry

how many moles of suctose are in 0.8L of a 2M solution? How many molecules of sucrose is this?

chemistry

What would happen if O2 were added to N2(g) + O2(g) 2NO(g) at equilibrium?

Chemistry

How many mL of 5.5 M KOH are needed to prepare 300 mL of 1.2 M NaOH?

Chemistry

Consider a solution containing 0.150 M Ba(OH)2. Calulate the pH.

chemistry

Mr=112.11 and 0.146mg/mL how do I change thiss to mmol/L

chemistry

please give me an example of a nanocomposite material

chemistry

The approximate pH of a 3.0 x 10-3 M solution of the strong acid H2SO4 is a) 3.5 b) 3.0 c) 2.5 d) 2.2 e) -3.0 how do you do this?

chemistry

The Ka for HOBr is 2.4 x 10-9. Thus, you can report the pKb for OBr– as a) 4.2 x 10-6 b) 9.62 c) 5.38 d) 8.62 e) 1.38 help!

Chemistry

Which one is the LR? Ag or S? 2Ag + S → Ag2S = 216 g Ag + 32 g S

chemistry

Write a balanced reaction for the formation of Fe2O3 (s)?????

chemistry

v=555mL at 1.00 atm. what is the volume at 689 torr?

Chemistry

So,my second method is correct isn't it? The answer is -78.4kJ?

Chemistry

How many mL of 3.0 M HCL are required to neutralize 250 mL of 2.0 M MgCL2 ?

Chemistry

Lewis Structure of Freon (CCI2F2)? And what is shape?

Chemistry

Empirical formula 12.67 aluminum, 19.73 nitrogen, 67.60 oxygen

chemistry

What is the volume at STP, in liters, occupied by 26.4 g of F2 gas?

chemistry

make 98.5 mL of 1.25 M barium nitrate from a 4.50 M solution. i do not know what to do with this information

Chemistry

How many moles of O are there in 32.4g N2O5, how many oxygen and nitrogen atoms are there in the 32.4g?

Chemistry

What is the pH of 1.0M Na2SO3 (aq)solution at 25C? a) 3.40 b) 6.03 c) 10.60 d) 7.96 e) 10.40 How can I get ph from only the Molarity?

chemistry

write the oxidation and reduction half reactions for mg+au^+---->mg^2^++au

Chemistry

How many moles of C2H2 are produced by 3.5 mol CaC2?

Chemistry

How can you determine which colorless liquid is less dense?

Chemistry

How many mL of .48 M NaOH are needed to react with 2.00 moles of H3PO4?

Chemistry

Attn: Dr. Bob Thank you so much for your help on this--greatly appreciated!

chemistry

Is calcium oxalate, CaC2O4, soluble in water?

chemistry

what is the density of carbon dioxide at 26.5 degrees C and 755 mm Hg?

Chemistry

Are the concentrations of CO, H2O, CO2 and H2 necessarily equal

chemistry

give at least 3 atoms with its isotopes and its application?

Chemistry

what are the rules used to determine the solubility of salt?

chemistry

What is the volume of 2.8 × 106 molecules He? Answer in units of L

chemistry

What is the density of propane (CH3CH2CH3) gas at 25°C and 65.0 cm Hg? (1atm=76 cm Hg)

chemistry

how to explain that HCL is a stronger acid than HOCL?

chemistry

If 2.3 mol of has a volume of 1.1 L at 289 K , what is the pressure in atm ?

chemistry

How many moles of ions are contained in 1.4 L of a 1.6 M solution of Mg(NO3)2?

Chemistry

If 84 g of CO2 were produced, how many grams of butanol were burned?

chemistry

How many moles of sodium are equal to 5.72 x 1025 atoms?

chemistry

What makes #Ag2S+2Al(s)=Al2S3+6Ag(s) ?

chemistry

2-octanol and 1-phenilethanol. which one more polarity?

Chemistry

Will 1-propanol and 1-butanol form an ideal solution?

Chemistry

0.200 moles of NaF are added to 1L 2.0 molar HF. What is the pH? a) 2.14 b) 6.70 c) 10.80 d) 3.00 e) 7.00

Chemistry

Complete each ionic equation Cu+2 + SO4-2 + 4H2O ---->

chemistry

which of the following is not a driving force for a chemical reaction?

chemistry

Calculate the pH of a 2.5x10-5 M lithium hydroxide solution.

Chemistry

What is the oxidation state of: O2 HSO4- Na2HPO4 CrCl3

Chemistry

What is the Net Ionic Reaction for NaOH(aq) + H2SO4(aq)-->

Chemistry

How many chloride ions are present in 21.0 grams of CaCl2?

Chemistry

What is the concentration of H+ in a solution containing 73.0 g of HCl in 0.5 L of water?

Chemistry

What is the pH of a solution of 0.1 M silver hydroxide, which is only 10% ionized?

Chemistry

A solution contains I-, Br- and OH- ions. If Ag+ is added, what will the precipitate(s) be?

chemistry

how-do-i-make-hydrochloric-acid-more-concentrated

chemistry

what is the base ionization constant expression for ammonia?

chemistry

what mass of KCl can be dissolved in 200.0g of water at 15.0C?

Chemistry

Can a solution of CrCl3 be stored in an aluminum container?

chemistry

How many joules to vaporize 1.5 L of H2O at 19 degrees Celsius?

chemistry

What is the value of delta G at melting point of ice?

Chemistry

calculate [H] and [OH] for a .01M calcium hydroxide solution?

chemistry

What is the BCA table for Potassium iodide and chlorine

Honors Chemistry

How many moles are in 4.36 L of oxygen gas at STP?

Chemistry

Which has the higher vapor pressure, acetone or octane?

Chemistry

Is there a net ionic equation for Ca(NO3)2 and K2CrO4?

Chemistry

Convert from 5.6 moles of Cl2 (g) to liters at STP

chemistry

theoretical pH 14-0.5(pKb-log[base]) = ? please help

chemistry

how will know the hydroxide concentration for a solution with a pH of 10 at 25 degree celsius?

Chemistry

Why does a pressure cooker reduce cooking time?

Chemistry

How many mols of dinitrogen monoxide are contained in 56.0L at STP?

Chemistry

What massof iron is contained in 86.6 grams if FeSO4?

Chemistry

Show how an atomic structure look like

Chemistry..please help!

Write the equation of lime n balance it!

Chemistry..please help!

Write the equation of lime n balance it!

Chemistry..please help!

Write the equation of lime n balance it!

Chemistry..please help!

Write the equation of lime n balance it!

Chemistry..please help!

Write the equation of lime n balance it!

Chemistry-please help quick!!

Which radical is copper sulphate?

Chemistry-please help!

What is the chemical formula for alluminium hydroxide?

Chemistry-please help!

What is the chemical formula for alluminium hydroxide?

Chemistry

Is ClO2>- a Bronsted acid, base, or both?

Chemistry

How many ml of water should I add to a 5 ml NaOCl ( 5.25%) to make it 1.0%. Thank you.

chemistry

What is the energy of an electron with a principle quantum number of n=2

chemistry

What is the oxidation state and covalency of [AlBr(Na3)5]+5

chemistry

I have a question. For Fe|Fe^+2 (1M)| Cu|Cu^+2 (1M why did you use Fe^2+ ==> Fe^3+ + e Eo = -0.771 ? instead of: Fe ---> Fe^+2 + 2e ? thank you..

Chemistry

What is the value of K for this aqueous reaction at 298 K? A+B<==> C+D delta G= 23.41 kJ?

chemistry

How much ethanol is required to make a 2L of a 70%ww solution?

chemistry

determine the mass of FeSO4 in sample Y that you use

chemistry

why did the solution turn to pink at the end of the titration ?

Chemistry

What are two reasons for precise but inaccurate measurements?

chemistry

boiling point of ammonia is lower than benzene. why?

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