chemistry! URGENT

60,135 results, page 76

chemistry

how can you find the amount of moles of 50 microliters of 18M H2SO4?

chemistry

what are the solute particles present in boric acid (H3BO3)?

Chemistry

List active metals that can be extracted from their compounds by electrolysis.

Chemistry

How many moles are found in 25 grams of hydrogen chloride gas

chemistry

How can a liquid, soda, contain a gas, carbon dioxide?

Chemistry

balance this equation NaOH + H2SO4 = NaSO4 + H2O

chemistry

Lab report of cations and anions by there precipitate form

chemistry

how much heat does it take to raise the temperature of 0.10 kg of gold bt 25 C?

chemistry

how much heat does it take to raise the temperature of 0.10 kg of gold bt 25 C?

Chemistry colloidExamples...

give me 15 examples for colloid from the drinks that we use

Chemistry

How much heat is required to warm 1.50 kg of sand from 20.0 C to 100.0 C?

chemistry

Calculate the pH of a 0.87 M NaCN solution. Solve it exactly (no assume x=0.1)

Chemistry

What is initial concentration of a sodium acetate if the pH (at epuilibrium) is measured to be 9.30?

chemistry

Calculate the pH when 75.20 mL of 0.114 M HCl is titrated with 0 ml of 0.108 M NaOH

chemistry

Calculate the pH when 75.20 mL of 0.114 M HCl is titrated with 0 ml of 0.108 M NaOH

chemistry

will SrSO4 precipitate when .1g of Na2SO4 are added to 1L of a .01M solution of Sr

chemistry

are compressive strength and brittle the same thing..if not then what is the difference?

Chemistry

Can you label all the functional groups of the Sucrose Molecule?

Chemistry

Calculate the concentration of the hydronium ion([H3Ol+]) for a solution with the pH = 4.5

Chemistry

Calculate the concentration of all species in a 0.240 solution.

Chemistry

Calculate the ratio of NaF to HF required to create a buffer with a pH of 4.00.

Chemistry

How does looking at phases of products and reactants show the Estamation of ÄS?

chemistry

How many grams of solute are present in 785 mL of 0.480 M KBr?

chemistry

pH of HF 5.3*10^-2 M Since HF is a weak acid, I'm not sure which formula to use.

organic chemistry

how to filter when a compound recrystallize at zero degree

chemistry

what mass of H2(g) is produced from the reaction of 5.2g Fe(s) with excess hydrochloric acid?

chemistry

a 0,25M solution of a week acid is 3% dissociated.calculate ka

Chemistry PLZ HELP!!!!!

what do we mean when we describe a molecule as being polar?

Chemistry PLZ HELP!!!!!

how are intermolecular forces different from chemical bonds?

chemistry

What is the mass percent of oxygen in sodium bicarbonate (NaHCOÀ)?

Chemistry PLZ HELP!!!!!

Differentiate between oxide, a peroxide, and a superoxide?

organic chemistry

what happens to so3 when placedat high temp?

Chemistry

What is the boiling point of ethanol when the atmospheric pressure is 60kPa?

Genral Chemistry

What are the pOH and pH of a 0.0125M solution of potassium KOH

chemistry

What is the mass of 4.75 mol of the element iron (Fe)? Answer in units of g

chemistry

What is the percent yield if 23.5 of ethyl chloride is actually formed?

AP Chemistry

What is the pH of a .20M HA solution (Ka=1.0x10^-6) that contains a 0.40M NaA?

chemistry

If 3.0 mol of O2 has a volume of 26.0 L at a pressure of 1.6 atm, what is its temperature in kelvins?

chemistry

how many grams of magnesium carbonate are in a sample that has 1.58 x 10^24 oxygen atoms?

chemistry

What is the final volume V2 in milliliters when 0.600 L of a 40.9 % (m/v) solution is diluted to 20.1 % (m/v)?

Chemistry

Now how many grams of o(2) are needed to produce 1.48x10^24 molecules of co(2)

Chemistry

Which group of elements is most likely to not form ions?

chemistry

If 27.3 g of NaNO3 are needed, what volume of a 5.78 % w/v solution will provide this mass?

Chemistry

In a 0.05M solution of a weak monoprotic acid,[H+]=.0018.What is its Ka?

chemistry

Write ksp for ba3(po4)2 in an aqueous solution

Chemistry

Why can some borax also dissolve at room temperature?

chemistry

For the strong acid solution 9.7×10−3 , determine (H3o+)and (OH-)

chemistry

For the strong acid solution 9.7×10−3 , determine (H3o+)and (OH-)

chemistry

how much heat is needed to convert 30 g of water at 10 C to 110 C

chemistry

Why are hydrogen ions NEVER found in an aqueous solution?

CHEMISTRY

Is CF4 an example of a central atom with an expanded octet?

Chemistry

Please help! I need to calculate the enthalpy change of the POCL3.

Chemistry

How do I identify the reducing agent in a reaction of magnesium with oxygen?

chemistry

the particles protons and neutrons present in atomic nucleus are known as......

chemistry

what is reason for the different atomic masses of the isotopes of an element

Chemistry

How many moles of methanol are dissolved in 1.5 L of water to make a 2.0 m solution?

Chemistry

How many moles of K atoms are there in 152.8247 grams of KMnO4?

AP CHEMISTRY

What does a negative value for a standard potential indicate? PLEASE HELP!!

Chemistry

how many grams of aluminum sulfate are produced if 23.33 g Al reacts with 74.44 G CuSO4

Chemistry

Give the major ideas of the kinetic molecular theory.

chemistry / help please

What is the name of: ZnNO3, of (NH4)2O, of Rb3PO4, or NH4ClO4?

chemistry

why does C4H10 have a higher BP than C2H6,C3H8, CH4

Chemistry

What are some chemical, extensive, and intensive properties of a pencil?

Chemistry

What is the reason that chemists chatagories Fe,Co and Ni in the same group VIIIB?

chemistry

will fe3+ oxidize Sn2+ to Sn4+ in acidic solution?

Chemistry-please help!

What is the meaning of combining power of elements and radicals?

Chemistry-please help!

What is the meaning of combining power of elements and radicals?

chemistry

What is the molality of a solution containing 7.8 g of MgCl2 in 725 g of water?

chemistry

what mass NaOH is required to react exactly with 25.0 ml of 3.0 M H2S04

chemistry

Calculate the value of Kc for 4NH3(g) + 3O2(g)= 2N2(g) + 6H2O(l)

chemistry

if 25.0g of O2 gas has a temperature of 400k and a pressure of 610 mm Hg, what is its volume?

chemistry

Kp for the reaction is 1.47 at 727°S CO2(g) + C(s) 2CO(g) Calculate Kc at this temperature

chemistry

When the following reaction is at equilibrium, which of these relationships is always true? 2 O3(g) 3 O2(g) A. [O3]2 = [O2]3 B. Kc[O2]2 = [O3]3 C. [O3] = [O2] D. Kc[O3]2 = [O2]3 E. Kc[O2]3 = [O3]2

chemistry

What is the final volume in milliliters when 0.698 of a 42.2 (m/v) solution is diluted to 21.1 (m/v)?

chemistry .....please help

Which of these temperatures is closest to 100 K? A. -173 °C B. 18 °C C. 0 °F D. 212 °F

Inorganic Chemistry

1) 5.0 mL of 6.0 x 10^-4 potassium 5.0 mL of the solution prepared above are then mixed with

chemistry

determine the number of moles of FeSO4 in sample Y that you use

chemistry

determine the concentration of Fe2+ ion the prepared solution

chemistry

How many moles of chloride ions are present in 18.4g of CaCl2? I don't know how to set this up...

chemistry

describe a prepare a 0.25 L.0.5 mol standart solution of NaoH

Chemistry

COmbination of nahco3andhcl what is before,after,mixture, and change?

chemistry

On the pH scale, any substance with a value between 8 and 14 is considered _________.

chemistry

Calculate the pH of an Aqueous 3.8 x 10^-5 M solution of barium hydroxide. I need help.

chemistry

chemical formulae which ends with ite,ate and ide

chemistry

calculate the density of a liquid if 47.9mL of it has mass of 49.06g

chemistry

How many liters is 5.8 mole of neon at STP? Show work

Chemistry

When hydrogen reacts with a metal, does it form a cation or an anion?

Chemistry

What is the density of a solution of 9.0% Calcium chloride dissolved in water?

chemistry (lab)

how or where does the hat energy produced by the candle come from ?? help me!

Chemistry

What mass of KBr is required to prepare 8.oo L of .400 M solution?

organic chemistry

how to find ethyl benzoate from methyl benzene

chemistry

Calculate the molality of CsCl in a 19% by mass aqueous solution.

Chemistry

How can you predict the heat of combustion for a substance with no carbon atoms?

chemistry

a piece of copper has a mass 740kg,what is the units in grams

Chemistry

How many moles of H_2 are needed to produce 13.27g of NH_3?

science

what is the best way to study for my chemistry test tomorrow

chemistry

chemical formula for potassium hydrogen sulfide? is it KHS?

Chemistry

What is the reactant when sugar is mixed with water? Also, what is the product?

chemistry

What is the valency and outer most electrons in scandium to zinc?

Chemistry

Would Ti3(PO4)2 be titanium phosPHATE or phosPHIDE

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