chemistry! URGENT

59,905 results, page 86

Chemistry

How can you determine which acid solutions (all at 0.10 M) has the highest concentration of anions?

chemistry

What factors affect the rate of diffusion of one gas through another

chemistry

what is the relationship between the area a force is applied to and the resulting pressure?

chemistry

how are the absolute temperature and volume of a gas at constant pressure related?

chemistry

how many grams of kno3 should be used to prepare 2.00 l of a 0.500m solution

chemistry

how many grams of kno3 should be used to prepare 2.00 l of a 0.500m solution

chemistry

how many grams of kno3 should be used to prepare 2.00 l of a 0.500m solution

chemistry

how many grams of kno3 should be used to prepare 2.00 l of a 0.500m solution

chemistry

how many kg of h20 must be added to 75.5g of Ca(NO3)2 to form a 0.500 m solution?

Chemistry

What gas is produced when hydrochloric acid is reacted with ammonium carbonate?

Chemistry

What volume of 0.130 M NaOH is needed to neutralize 4.00 g of benzoic acid?

chemistry

Calculate the amount of heat (in calories) released when the 1.2 g sample was burned.

chemistry

write the reaction for the neutralization of nitric acid with calcium hydroxide.

chemistry

name a metal carbonate that doesn't decompose when heated with a bunsen burner.

chemistry

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

chemistry

would measuring dimensions of a solid always be possible? Explain thanks =]

chemistry

A radio wave has a frequency of 3.6 * 10 10 Hz. What is the energy of one photon of this radiation? thank you.

Organic Chemistry

what is meant by "resolving" an enantiomer pair? what are some ways in which it can be done?

chemistry

STRUCTURE OF HNO4,(CH3)2SO,(CrO4)2-,NH4NO3,FNO3

Chemistry

What type of bond is formed in the reaction 4Fe(s)+3O2(g)? Rust?

chemistry

How many molecules of O2 are in a 3.5 liter container? How many atoms? Must show work.

chemistry

the solubility product expression for BiS3 is Ksp= a.[Bi2^3][S3^2-]. b. [Bi^3+][S^2-]. c. [Bi^3+]^2 [S^2-]^3 d. none of these

chemistry

What is the mathematical relationship between Boltzmann distribution and relative energy?

college chemistry

how do I calculate the amount of heat lost by the metal, qmetal?

Chemistry

what is the importance of the weak intermolecular bonding in organic carbon compounds

Chemistry

it says: calculate the number of grams of NH3 produced when 21.0 g of H2 react with N2.

chemistry

what is the concentarion of hyrdoxide ions in 250ml 1.1mol/l of calcium hydroxide

Organic chemistry

is benzoic acid soluble in water, 1.0M NaOH, 1.0M HCl?

chemistry

At what temperature (in degrees C) does acetone have Pvap= 102 mmHg?

chemistry

how do i name the ionic compound bythis formula (NH4)2Cr2O7

Chemistry

how do i find which substances are most likely to obey raoult's law?

chemistry

Which of the following has the largest molar mass? A. isopropanol B. Water C. ethanol

CHEMISTRY

TO WHAT SPEED MUST AN ELECTRON BE ACCELERATED FOR IT TO HAVE A WAVELENGTH OF 3.0CM?

Chemistry

Here is a chemical reaction Fe + O2--> Fe2+O3 what was Antonie Lavoiser rusting?

chemistry

how many grams of propane are in a 35L container at 40 degrees and 900 torr?

chemistry

how many grams of propane are in a 35L container at 40 degrees and 900 torr?

chemistry

What quantity of heat is required to vaporize 32.5 g of liquid water at 100°C?

Chemistry

DrBob222 please help me answer the question that I posted pleaseee, pleaseeee

chemistry

the molarity of ferric ion in a .060 M solution of Fe2(SO4)3 is?

Chemistry

An endothermic process absorbs 138kJ. How many calories of heat are absorbed?

chemistry

which is the only noble gas listed that is stable at 0 degrees celsius?

Chemistry

What is the solubility of calcium iodide (in g per 100 cc of cold water)?

Chemistry

What type of extraction can be used to separate Hexane and a substance soluble in it?

chemistry

Can someone give the fomula of finding the molar volume of oxygen

chemistry

How many moles of water are contained in 0.250 mol of CuSo4 x 5H2O?

chemistry

Why must bromine be added slowly to trans-cinnamic acid?

chemistry

What is the freezing point of a solution of 5grams of CaCO3 and 10ml of H20?

chemistry

What element is undergoing reduction in the following reaction? Zn(s) + AgNO3(aq) --> Zn(NO3)2 + 2 Ag(s)

Chemistry

What is the balanced ionic equation between bromine and sodium bisulfite??? thanks

chemistry

what about HCN, HCLO4, H2SO4 , are they strong acids or weak

Chemistry

Which type of stoichiometric calculation does not require the use of the molar mass?

chemistry 1

what is the value of the coefficient for cobalt when the following equation is balanced Co(s)+ O2 (g)> Co2O3(s)

chemistry

How many grams of NaN3 are required to produce 17.4 ft3 of nitrogen gas?

chemistry

What is a complete ionic equation for the reaction between Pb(NO3)2 and NaI?

chemistry

how many moles are in a 65L sample of chlorine gas at 10degrees Celcius?

chemistry

double indicator titration of phosphoric acid with sodium hydroxide

chemistry

how do u calcualte the percent of hydrogen and carbon if given their mass in grams?

chemistry

How many moles of O2 are needed to combine with 0.646 mol Al to give Al2O3?

chemistry

How many moles of O2 are needed to combine with 0.646 mol Al to give Al2O3?

Chemistry

What would be the most likely product(s) when you react CuI with NH4OH?

chemistry

how many grams of solute are in 250ml of 0.500M glycerin . (C3H8O3=92.1 amu)?

chemistry

Determine the number of molecules of ethanol (C2H5OH) in 47.0 g. Can someone explain to me how to do this?

chemistry

How many moles of O2 are needed to combine with 0.288 mol Al to give Al2O3?

chemistry

what happens when sulphate ions are added to hydrochloric acid and then heated?

chemistry

Which of the following molecules is polar? 1. CH4 2. BH3 3. NH3 4. CF4 5. H2

chemistry

How could you recover sucrose or sodium chloride once it has dissolved in water?

chemistry

what is the product of reaction K3(Al(C2O4)3).3H2O with KMnO4 in the present of H2SO4?

chemistry

what happens when you place sodium hydroxide and water into a calorimeter?

Chemistry

Which of the following species would NOT function as an oxidizing agent? a. MnO4- b. Mn+2 c. H+ d. S e. Br-

Chemistry

why do elements within a group have similar chemical properties?

chemistry

What is the equation of the preparation of K3[Al(C2O4)3].3H2O using Al2(SO4)3?

Chemistry

How many mL of 0.225M HCl would be required to titrate 6.00 grams of KOH?

Chemistry

What is the density of carbon monoxide gas at 127 celcius and 763 mm Hg?

Chemistry

How many mL of 0.225M HCl would be required to titrate 6.00 grams of KOH?

chemistry

what two metals that will not generate hydrogen gas when treated with an acid?

chemistry

how many grams of oxygen are formed when 500gof dinitrogen monoxide decomposes?

chemistry

How much water is added to 5.28 grams of ethanol to get a concentration of 1.67M?

Chemistry

How many grams of CuSo4 x 5h20 to prepare 100 mL of a .10M solution?

Chemistry

A 1.50 M solution containing 25 Grams of Al(OH)3 would occupy what volume in liters?

chemistry

What quantity of heat is required to warm 53.7 g of liquid water from 0°C to 100°C?

college chemistry

How do you calculate delta[S2O8 2-] in iodine clock reaction?

Chemistry

Determine the concentration of a dioxin solution whose percent absorbance is 0.40%

Chemistry

Rank the elements B, Al, Na, Mg from largest to smallest atomic radius. Would it be: Al, Mg, Na, B?

chemistry

According to this chemical reaction, which is the number of grams of Fe produce from 14 moles of H2?

chemistry

how can you fill a flask with pure oxygen without mixing it with air

chemistry

what is the molar change in enthalpy when 100 g of ice is heated from -18.2C to -7.2C?(C=37.4 J/K*mol)

Chemistry

The two most common forms of elemental carbon are graphite and

chemistry

What is the solubility of CaF2 in a buffer solution containing .30 M HCHO2 and .20 M NaCHO2?

Chemistry

Determine the density of chlorine gas at 22C and 1.00 atm pressure.

College Chemistry

Quick Question - For a spontaneous reaction, ΔS°>0 and K >1. Is this always?

Chemistry

Have I balanced this equation correctly CN + NaOCL---OCN + NaCl

Chemistry

For which one of the following reactions is the value of H°rxn equal to H°f for the product?

chemistry

What is the complete ionic equation for CaS(aq) +CuCl2(aq)=CuS(s)+CaCl2(aq)

chemistry

How many grams of oxygen are required to react with 0.128 lead(II) sulfide?

chemistry

How many kilojoules are needed to vaporize 3.00 liter of ethanol at 78 degree celcieus?

chemistry

whatmass of (NH4)3SO4 is required to prepare 500cm3 of m/4 solution

CHEMISTRY

how many grams are contained in 0.50 mol of each compound? HCl Na2SO4 C2H2 and Al(OH)3?

chemistry

at what temperature does 16.3 g of nitrogen gas have a pressure of 1.25 atm in a 25.0 - L tank?

11th grade chemistry

in 1D there are 4g of Zinc. How many moles of Barium Hydroxide are required?

Chemistry

what is the pressure exerted by 32g of 0xygen(O2) in a 22.0 L container at 30.0`C? What Law do I use?

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