CHEMISTRY (WEBWORK)

58,560 results, page 89

Chemistry

How many liters of chlorine gas can be produced when 0.98 L of HCl react with excess O2 at STP?

Chemistry

How many liters of chlorine gas can be produced when 0.98 L of HCl react with excess O2 at STP?

Chemistry

How many liters of chlorine gas can be produced when 0.98 L of HCl react with excess O2 at STP?

Chemistry

How many grams of carbon dioxide are produced in C3H8+5O2 -> 3CO2+4H2O

Chemistry

What mass of HNO3 is present in 248.6 mL of a nitric acid solution having a pH = 5.04?

Chemistry

If the percent yield was 81.5%, how many grams of aluminum were used to prepare 20.0 g of potassium alum?

chemistry

If 2.0 mL of 0.80M copper (II) sulfate and 8.0 mL of water are mixed, what is the concentration of the resulting solution?

ap chemistry

what volume of 0.0100 M NaOH must be added to 1.00 L of 0.0500 M HOCl to acheive a PH of 8.00?

chemistry

Current is applied to an aqueous solution of lithium sulfide. What is the cathode and what is the anode?

chemistry

2. Aluminum chloride was a product in step 6. How could you instruct your lab partner to recover it.

chemistry

write the conjugate base for the following: A.) HCN= B.) HPO4^2- = C.) NH4+ = D.) HC2H3O2=

chemistry

DrBob222 No. 0.30 isn't the correct answer either. I'm going to ask my prof about it tomorrow.

Chemistry

How many moles of nitric acid will be produced when .51 mole of dinitrogen pentoxide reacts

chemistry

2. Aluminum chloride was a product in step 6. How could you instruct your lab partner to recover it.

Chemistry

What is the concentration of the SCN- ion in the stock solution of 2.00 x 10-3 M NaSCN in 0.10M HNO3?

Chemistry

Why was gravity filtration used instead of evaporation to isolate the calcium cabornate?

Chemistry

Is there any periodicity in the maximumm oxidation number for elements 11 through 17? If so, explain your answer.

Chemistry

Calculate the equivalent mass of each of the following acids. a) HC2H3O2 b) KHCO3 c) H2SO3

AP CHEMISTRY

Calculate the equivalent mass of each of the following acids. a) HC2H3O2 b) KHCO3 c) H2SO3

Chemistry

what is the chemical equation of copper II oxide and carbon monoxide (include phases)?

chemistry

If you have 2 moles of glucose in 8 liters of solution, what is the molarfity of this sol;ution?

chemistry

solve under rate of reaction: 1)Mno4^- + Fe2^+=Mn2^+ + Fe3^+

chemistry

solve under rate of reaction: 1)Mno4^- + Fe2^+=Mn2^+ + Fe3^+

chemistry

solve under rate of reaction: 1)Mno4^- + Fe2^+=Mn2^+ + Fe3^+

Chemistry

3.54*10^7 g of TiCl4(g) are reacted completely. If 7.91*10^6 g of Ti(s) is actually obtained, calculate the percent yield.

chemistry

ewhat is the solubility of X in mol/dm3 if 25cm3 of its saturated solution contains 4.0g of X

chemistry

how does the number of electron pairs around a central atom determines its shape

Chemistry honors

You have 2.657 x 10^2 mL of oxygen gas (O2) at 7.02 x 10^2 mm of Hg and 46 oC. What is the mass of the sample in milligrams?

Chemistry

At constant pressure, which of these systems do work on the surroundings? Check all that apply. A(s) + 2B(g) ---> C(g) 2A(g) + B(g) ---> 4C(g) A(g) + 2B(g) ---> 2C(g) A(s) + B(s) ---> C(g)

Chemistry

How many mL of .150 M sodium hydroxide is required to neutralize 25 mL of .125 M of phosphoric acid?

chemistry

which is the best salt to use to melt ice without any side effects

chemistry

which is the best salt to use to melt ice without any side effects

Chemistry

What is the density of CO2 at STP in g/L? How would I do this problem using dimensional analysis?

chemistry

Determine the mass of Co(NO3)2•6 H2O to prepare 250 mL of a 0.50 M stock solution.

chemistry

how much concentrated 12 M hydrochloric acid is needed to prepare 100 mL of a 2.0 M solution?

Chemistry

How many grams of H2(g) can theoretically be produced from a 5-g sample of magnesium metal and excess HCl(aq)?

Chemistry

What would the IUPAC name of the molecule: H2C=C=CH2 be? is 1,2-propene right?

chemistry

please help calculate the volume of a cylinder that is 4.476 mm in height and 17.00mm in diameter

chemistry

Based on electronegativity values, which bond has the highest degree of ionic character: H--S Si--Cl Cs--Br?

chemistry

How does Le Chatelier's principle explain the result you obtained after the addition of NaOH?

Chemistry

Calculate the molality of a solution prepared by dissolving 31.6 g of Fe2O3 in 750. g of water

Chemistry PLZ HELP!!!!!

distinguish between aorphous and crystalline soilds and give an example of each

Chemistry

What is the volume occupied by 12.3 g or argon gas at a pressure of 1.17 atm and a temperature of 455K?

Chemistry

16. You have a series of four chemical reactions (1--> 2 --> 3 --> 4). How do you calculate the H2 if you know the other H values? H2 = (H1)(H3)/(H4) H2 = H4 (H1 + H3) H2 = H1 + H3 + H4 H2 = H1 + H3 H4

Chemistry

What 3 compunds can be used to prepare oxygen in the laboratory? What are the reactions for each of the three compounds?

chemistry

What volume will 12.0 g of oxygen gas occupy at 25 degrees celcius and a pressure of 52.7 kPa?

Chemistry

What amperage is required to plate out .250 mol Cr from a Cr+3 solution in a period of 8.00 h?

Chemistry

Is an endothermic reaction more likely to be spontaneous at a higher or lower temperature??

Chemistry

How much limestone in kilograms is required to completely neutralize a 3.8 x 109 L lake with a pH of 5.5?

chemistry

why would it be undesirable to wash the crude halide with aqueous sodium hydroxide

CHEMISTRY

WHAT IS THE COST PER KJ TO PRODUCE METHANOL, ETHANOL, PARIFFIN, PROPANOL,AND BUTANOL?

chemistry

At what temperature does 14.2 g of nitrogen gas have a pressure of 3.25 atm in a 14.0 liter tank?

Analytical Chemistry

How many millimoles and molecules of solute are in 500 ml of a solution that is 5.41 ppm KMnO4?

chemistry

With the aid of chemical equation only describe how butane can be converted to but-2-ene

chemistry

How much heat (in Kj ) is required to warm 10.0g  of ice, initially at -11.0 C, to steam at 112.0 C?

Chemistry

How much heat (in Kj ) is required to warm 10.0g  of ice, initially at -11.0 C, to steam at 112.0 C?

chemistry

3CaCl2+2Na3PO4 -----------> 1Ca3(PO4)2+6NaCl Did I correctly balance this equation?

Chemistry

What is the compound name for Sb2(CrO4)5? This is the only question I am having trouble with.

chemistry

which liquids are effected by an electric field and why 1-chloropropane, pentane, tetrachloromethane, cyclopentane

chemistry

How many moles of a gas will occupy a volume of 0.53 L at a temperature of 343 K and a pressure of 2.6 atm ?

chemistry

what is the change in heat when 23.5g water vapor at 100C condenses to liquid 18.50C

chemistry

N2+2H2=N2H4 What is the concentration of H2 at equalibrium when (N2)=.033 and (N2H2)= .042 M? Keq=5.29

Chemistry

What is the [CrO4] in a 2.5 L saturated solution of lead (II) chromate to which 0.05 mol Pb(NO3)2 is added?

chemistry

how many grams of NaOH would be needed to make 896mL of a 139 M solution

Chemistry

What is the molarity of a solution prepared by dissolving 4.92 g of calicum nitrate in 250 mL of water?

Chemistry

A 55.0-mg sample of Al(OH)3 is reacted with 0.200M HCl. How many milliters of the acid are needed to neutralize the Al(OH)3.

CHEMISTRY

what volume of 0.100 M NaCl is needed to react completely with 5.00 mL of 0.200 M Pb(NO3)2?

Chemistry

Explain the Hyberdaization scheme for the central atom&the molecular geometry of CO2.

chemistry

What is the molarity of a solution prepared by dissolving 2.41 g of potassium iodide, KI in 100 mL of water?

Chemistry

How do burn patterns reflect heat flow with the presence or absence of oxygen.

Chemistry

What can you say about the energy spread of the radiation emitted by an atomic gas?

Chemistry

Calculate the volume of NaOH 0.5 mol/L necessary to neutralize 300 mL of HCl 0.2 M.

Chemistry

How many moles of Xe gas are there in a container of Xe with a volume of 1.5L, and a pressure of 1.25 atm, and a temperature of 150C?

Chemistry

Calculate the KA of formic acid if 2.3 g of it is dissolved in 1 litre of water to give [H+] of 0.003 M.

chemistry

How many calories will be needed to melt that 50 grams of snow (report as 1 significant figure)?

chemistry

0.540 g of bromine combine with 0.858 g of iodine to yield a compound X.Its % composition is

Chemistry

Calculate the grams of solute required to make 2500mL of 90% saline solution?

chemistry

determine the amount in grams of H2SO4 required to make 3.0L of 1.15M Nacl

gen chemistry

final volume obtained when a 1.5M KOH solution is dilued to 1.25M

gen chemistry

calculate the percent m/v concentration of a 5L solution containing 500g NaCl

Chemistry help please?

order these highest PH to the lowest PH Ca(OH)2(aq) HCN(aq) NH3(aq) LIOH(aq) HCI(aq)

Chemistry

What is the balanced equation for the neutralization of lactic acid using Sodium bicarbonate?

Chemistry

Are the renew molecules or ions formed when SO2(g) mix with CaCl2, HCl?

Science: Chemistry

What does the nose detect when it "smells" something? What evidence is there support your answer?

chemistry

What chemical substance is in red cabbage which serves as an indicator for acids and bases?

chemistry

Which of these is a homogeneous mixture? A. a salad B. seawater C. soil D. raisin bread help me please!!

Chemistry

How many milliliters of a .5M HNO3 (aq) is needed to completely neutralize 100mL of a 0.10M KOH (aq)?

Chemistry

Indicate how many stereoisomers are possible for each compound. b) tetrahedral [NiCl2Br2]2– c) octahedral [Fe(CO)4BrCl]

chemistry

what is the equilibrium expression for P4(s) +5O2(g)<====>P4O10(s) I think it is 1/[O2]^5 but the answer says [P4010]/[P4][O2]^5

chemistry

If the iodine value obtained for an experiment is negative,could this be due to an experimental error?

Chemistry

For the following fusion reaction, calculate the change in energy per mole. 2/1 H + 3/2 He -> 4/2 He + 1/1 H

Chemistry

For the following fusion reaction, calculate the change in energy per mole. 2/1 H + 3/2 He -> 4/2 He + 1/1 H

chemistry

what the rules to be followed in performing he 4 fundamental operaions using scientific notation?

Chemistry

The density of a liquid is 3.22 g/mL. How many milliliters are there in 2.62 kg? If you answer this could you give me an explanation of how to solve it in the future

Chemistry

What concentration of aqueous NaOH solution freezes at negative 3.2 degrees celsius ?

chemistry

What is the final temperature of 15.0 g water initialy at 5.5 degrees celcius when 1140 J is added?

chemistry

calculate the volume occupied by 10^22moleculesof a gas 300k and 760mm pressure

Chemistry

What is the balanced equation for copper (II) sulfate pentahydrate and potassium oxalate monohydrate?

chemistry

how much NaOH which is 25% pure required to neutralise 100mL 10N HCl

Chemistry

I am stuck on this question: what mass of KCl in grams when 2.00 lbs KC10 3 is decomposed?

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