What is the empirical of compound (X) going through the following decomposition reaction?

78,695 results, page 35

college Chemistry

1. If 25 grams of Iron (III) hydroxide is dissolved in a 500mL volumetric flask, what is the Molarity of the solution? 2. An unknown metal has a volume of 5.25 mL and a density 2.71 g/mL. What is the weight of the metal in grams? 3. An unknown metal, heated to an unknown ...

Chemistry

Okay so I'm doing an assignemtn and one of the questions has stumped me. It asks: The solid fuel booster rockets on the space shuttle employ a mixture of aluminium and ammonium perchlorate. The reaction is: 2Al(s) + 2NH4ClO4(s) → Al2O3(s) + 2NO(g) + 3H2O(g) + 2HCl(g) ...

AP Chemistry

in a coffee-cup calorimeter, 50.0 mL of 0.100 M AgNO3 and 50.0 mL of 0.100 M of HCl are mixed to yield the following reaction: Ag+ (aq) + Cl- (aq) >> AgCl (s) the two solutions were initially at 22.60 degree celsius, and the final temperature is 23.40 degree celsius. ...

AP Chemistry

in a coffee-cup calorimeter, 50.0 mL of 0.100 M AgNO3 and 50.0 mL of 0.100 M of HCl are mixed to yield the following reaction: Ag+ (aq) + Cl- (aq) >> AgCl (s) the two solutions were initially at 22.60 degree celsius, and the final temperature is 23.40 degree celsius. ...

math

Erica's average rate going uphill was 80% of her average rate going downhill over the same route, and it took Erica 10 minutes longer to go up the hill than to go down the hill. What was the total number of minutes Erica spent going uphill and downhill?

Chemistry

HELP! we just started kinetics and i have no clue how to solve this problem. For the reaction between reactants A and B below, if 4.925 moles of A is placed into a flask with excess B it is found that the amount of A remaining after 6.85 seconds is 2.737 moles. 2A (g) + B (g...

sita college

It took 20 seconds for a certain volume of oxygen to effuse through an orifice(small opening) at 298K. How long will it take the same volume of each of the following gases to effuse through the same orifice at the same temperature?. The gases are hydrogen, helium, and chlorine...

Chem II

The equilibrium constant of a reaction is 12.6. If the rate constant of the reverse reaction is 5.1 x 10 -2 the rate constant for the forward reaction is _____ 0.32 0.16 0.64 0.08 I don't even know where to start on this question. Any direction will help

English

1. James Joyce was a great master of stream of consciousness. simple sentence*** compound sentence complex sentence compound-complex sentence 2. Joyce's, however, owed much to French novelist who had used the technique much earlier. simple sentence compound sentence complex ...

Chemistry

A sample of iron(II) sulfate was heated in an evacuated container to 920 K, where the following reactions occurred. Reaction (a): 2 FeSO4(s)--> Fe2O3(s) + SO3(g) + SO2(g) Reaction (b): SO3(g)--> SO2(g) + 1/2 O2(g) After equilibrium was reached, the total pressure was 0....

English

A dependent clause and an independent clause joined together form a: A. compound sentence. B. simple sentence. C. compound-complex sentence. D. complex sentence. D

chemistry

For which of the reactions listed below will Gibbs free energy always be negative? A. An exothermic reaction that increases in entropy B. An endothermic reaction that decreases in entropy C. An endothermic reaction that increases in entropy D. An exothermic reaction that ...

chemistry-Chemical Formulas And Reactions

What is the balaced equation for the decomposition of aluminum chloride? 2AlCl3==> 2Al + 3Cl2 if it simply decomposes and nothing else is added.

chemistry

A pair of students performs an experiment in which they collect 27 g CaO from the decomposition of 41 g CaCO3. Are these results reasonable? Explain your answer using percentage yield.

Chemistry

Calculate the mass of H2O produced by the decomposition of 2.21g of CuCO3 x Cu (OH)2. What happend to this water? This question is incredibly important and I am stuck on it, thank you very much for your help

algebra

Could somebody tell me in simple terms why equating coefficients works in partial fraction decomposition? Like a simplified proof or something? I don't understand why.

s.t mary's school

what amout of zinc will be required to generate sufficient hydrogen to completely combined with oxygen obtained by complete decomposition of 30 g of potassium clorate?

English

1) In the story "A Meeting in the Dark," John's character advances the plot and communicates the theme through each of the following conflicts except. A)man vs. man B)man vs. nature C)man vs. society D)man vs. himself 2) Read the following sentences that reflects John's ...

chemistry

When 4.167 g of a unknown compound is added to 34.1 g of a particular solvent, the freezing point of that solvent decreases by 0.8 °C. Determine the molar mass of the unknown compound. (The freezing point constant of the solvent is 2.82 °C/m).

chemistry

The chemical reaction N2(g) + 3 H2(g) ↔ 2 NH3(g) is at equilibrium. An experimenter injects a small amount of N2 into the reaction chamber. What happens to the forward reaction rate right after the injection of the N2?What happens to the reverse reaction rate right after...

chemistry

The chemical reaction N2(g) + 3 H2(g) ↔ 2 NH3(g) is at equilibrium. An experimenter injects a small amount of N2 into the reaction chamber. What happens to the forward reaction rate right after the injection of the N2? What happens to the reverse reaction rate right ...

chemistry

lactic acid is the avid responsible for the sour test in spit milk. on the basis of combustion analysis, it's percentage composition by mass is 40.00% carbon, 6.71%hydrogen and x% oxygen. a. Calculate the empirical formula of lactic acid b. The molar mass of lactic acid is 90g...

Chemistry

The reaction 2NO(g) + 2H2(g) N2(g) + 2H2O(g) goes twice as fast when the concentration of H2 is doubled but four times as fast when the concentration of NO is doubled. What is the overall reaction order? I did it like this: k[NO]^m[H2]^n 2r=[H2]^n, meaning that the order for ...

chemistry

Which of the following is a molecular compound that contains five atoms per molecule? germanium tetrabromide dinitrogen monoxide dinitrogen pentoxide nitrogen diselenide please explain. I am having a very hard time comprehending this stuff thanks

Chemistry

The equilibrium constant for the reaction of bromine and chlorine to form bromine chloride under certain conditions is 4.7x10-2. Cl2(g) + Br2(g) --> 2BrCl(g) K= 4.7 x 10-2 What is the equilibrium constant for the following reaction under the same conditions? 1/2 Cl2(g) + 1/...

Chemistry

Does the reaction between CO2(g) + Mg(OH)2(aq) produce MgCO3(s) + H2O(l) or Mg(HCO3)2 ??? Normally, Mg(CO3)2 but I suspect an excess of CO2 will produce the bicarbonate. For example, CO2(g) + Ca(OH)2(aq) ==> CaCO3(s) + H2O(l) and that is often done by exhaling into a flask ...

Geometry Question

B is the midpoint of segment AC and D is the midpoint of segment CE. Solve for x, given BD=3x+5 and AE=4x+20. Sorry I couldn't get the link for the picture but, the diagram is a picture of a triangle with a C at the top, and A and E on the bottom angles, with segment BD going ...

chemistry help !!!!!!!!!!!!!!!!

Benzoic acid react with NH2 group Draw the product of this reaction, name the new functional group produced, state the type of reaction that has occurred, name any other products of the reaction and briefly explain how you arrived at your answer.( one or two sentences.)

chemistry

Hgl2(s)=2NaNOg(ag) a combination,decomposition,single replacement or double replacement

chem

For a double replacement reaction to occur, is it that one of the products must be insoluble and form a solid? There has to be some mechanism to remove the products from the reaction so that the reaction does not proceed in the reverse direction. Product needs to be removed: ...

chemistry

The reaction between 0.0272 g of Mg with an excess of water was carried out in an ice calorimeter. The volume of water decreased by 0.19 mL during the reaction. a) Write the equation that occurs. Is it a redox? b) Calculate the enthalpy of reaction? i have no clue how to ...

chemistry

Use the following pair of reduction half-reactions to design a galvanic cell. Then write in the proper coefficient for each of the species involved in the overall reaction. Water molecules and protons are not shown in the half-reactions, but may be needed in the overall ...

geometry

find the slope of a line that passes through the following points. (4,5) and (3,0) using the perpendicular and parallel slopes write slope intercept form equations for both perpendicular and parallel lines all perpendicular lines pass through the point(2,5) and parallel lines...

English

Complete the following sentence with a preposition that shows a time relationship. Owen will need to take a nap _______ going to the concert. A. Before B. In place of C. Instead of D. Because of I think its A?

maths

expand each of the following using the compound angle formulae a. cos(A - B) b. sin(alpher + alpher) c. cos(alpher + 70°)

Chemistry - Combustion Method

This question is confusing me the way its presented and also is relating it to the combustion method that is used to analyze carbon and hydrogen. It can be used to give percent N. It says a sample of a compound that weighs 8.75 mg gave 1.59 mL of N2 at 25 degrees Celsius and ...

Chemistry

A solution was made by dissolving 62.07 grams of a compound in 500g of water. The compound was not ionic. The freezing point of the solution was measured and found to be -1.86 degrees celsius. Using the Kf value in your textbook, the molar mass of this conpound can be ...

Compound math

(Future Value) Suppose you invest $8000 into an account that pays an annual interest rate of 6.2%. How much is in the account after 30 years if a. simple interest is compound monthly? b. interest is compounded monthly? c. interest is compounded daily?

english 1

1. which of these is a complete sentence ? ( 1point ) A. although the weather is sometimes warm in early march b, forecasters predicted six more weeks of winter this year** c, the old saying “ in like a lion , out like a lamb “ with practice both kendra and jason mastered ...

English

Indentify the choice that best describes the scentences. When I arrived at the office, I found that the principle was out; apparently, he had contracted the same sickness as half the school. A- simple B- compound C- complex D- compound complex* I'm pretty sure the answer is d...

Chemistry

I had to perform an experiment for rate of reaction. The point of the experiment was to show how changes in reactant concentration, temperature, and catalyst presence can affect the rate of a reaction. The reaction that we studied was H2O2 + 2I^- + 2H^+ -> I2 + 2H2O We had ...

Chemistry

How do you find out the number of moles in a certain amount of grams of a element or compound. After that, how do you find the number of atoms/molecules in that element or compound. Thanks grams/molar mass = # mols There are 6.02 x 10^23 molecules in a mol of anything.

chemistry

wen determining the formula for a compound its important to no the valance no of each element suppose element a has a valance no of 3 an element b has a valence no of 2 if the two elements combine then wen writing the formula for the resulting compound wat subscript no will be...

chemistry

The concentration of a certain ionic compound in aqueous solution is 0.186mol/L . It is only solute in the solution. The concentration of pottassium ions in the same solution ia 0.558mol/L. Explain why the concentrations of the ions in the solution are different. What might ...

chemistry

How many grams of aluminum is produced from the decomposition of 34grams of aluminum oxide

Chemistry(Please help, thank you!)

A study of the system, H2(g) + I2(g) == 2 HI(g), was carried out. Kc = 54.9 at 699.0 K (Kelvin) for this reaction. A system was charged with 2.50 moles of HI in a 5.00 liter vessel as the only component initially. The system was brought up to 699.0 K and allowed to reach ...

chemistry

What change do you expect if the value of the reaction quotient is greater than the value of the equilibrium constant? A. The rate of the forward reaction is greater than the rate of the reverse reaction. More reactant forms. B. The rate of the forward reaction is greater than...

Armwood

Abby’s bus left at 2:00, going southbound at 55 mph. Bob’s went northbound starting at 3:00, going only 45 mph. How long will it take for them to get 420 miles apart? Round to the nearest tenth if necessary

Chemistry

Phosgenite, a lead compound with the formula Pb2Cl2CO3, is found in Egyptian cosmetics. Phosgenite was prepared by the reaction of PbO, NaCl , and CO2. An unbalanced equation of the reactant mixture is PbO (s) + NaCl (aq) + H2O (l) + CO2 (g) \rightarrow Pb2Cl2CO3 (s) + NaOH (...

chemistry

The chemical substance in natural gas is a compound called methane. Its molecules are composed of carbon and hydrogen and each molecule contains four atoms of hydrogen and one atom of carbon. In this compound, 0.33597g of hydrogen is combined with 1g of C12. Use this ...

science

1. Which of the following explains why your body may contain a carbon atom that was present in George Washington’s body in 1776? (1 point) Carbon moves in a one-way direction through living organisms only. Carbon moves in a one-way direction from the atmosphere and then ...

chemistry

Using data in table below and S °(C2H6(g))= 229.5 J·mol-1·K-1, calculate ÄfS° for C2H6(g) in J·mol-1·K-1. Compound S °, J·mol-1·K-1 Compound S °, J·mol-1·K-1 C(s) 5.69 H2(g) 130.6 I am sorry , last time i did not show my working. thanks for helping me . Delta S= ...

Chemistry

A 3.000 gram sample of an unknown compound containing the elements carbon, hydrogen, and nitrogen is analyzed by combustion. The combustion releases 4.714 grams of carbon dioxide and 1.500 grams of nitrogen. If 25 molecules have a combined mass of 4.65 x 10⁻²¹ grams, ...

chemistry

Benzoic acid reacts with water to form the benzoate ion by the following reaction C6H5COOH(aq) + H2O(l) ⇀↽ C6H5COO−(aq) + H3O +(aq) The equilibrium constant for this reaction is 6.4 x 10−5 . In a 0.1 M solution of benzoic acid, what is the concentration...

Stoichiometry Problems

How many grams of phosphorus can be obtained from the decomposition pf 45kg of POCL3. 2 POCL3 --(> 2P + 3Cl2 + O2

chemistry

N2 (g) + 3H2 (g) → 2NH3 (g)ΔH = -92.6 Calculate ΔH (in kJ) for the decomposition of 30.5 g NH3 (g) into N2 (g) and H2 (g)

chemistry

O3 ----> O + O2 Decomposition What is happening as it decomposes to O and O2 instead of O2 that is decomposes to naturally? How might you fix this issue?

Chemistry

Nitroglycerin, C3H5(NO3)3, a solid explosive compound, decomposes to carbon dioxide, water vapor, nitrogen, and oxygen. (a) Calculate the total volume of gases when collected at 1.2 atm and 25 degrees Celsius from 2.6*10^2 g of nitroglycerin. (b) What are the partial pressures...

Math

Raymond puts the money he inherited in an investment that earns 4.4% per year, compound semi-annually. After 12 years his investment had grown to $35,402.06. Raymond then invested the $35,403.06 at 5% per year, compound quarterly for the next 5 years.

Chemistry

The iodide ion can be oxidized in an acidic solution by hydrogen peroxide. One proposed mechanism for the reaction is as follows: Step 1: H2O2 (aq) + I-(aq) → H2O (l) + OI-(aq) slow Step 2: H+(aq) + OI-(aq) → HOI(aq) fast Step 3: HOI (aq) + H+(aq) + I-(aq) → ...

Calculus

Posted by CMM on Wednesday, October 13, 2010 at 12:50am. Calculate the following: a) Find g(f(1)) b) Find lim x-> 1+ g(f(x)) c) Find f(g(0)) d) Find lim x->0- f(g(x)) f(x)= 1-x, x<1 1, x=1 x-1, x>1 g(x)= -x, x<0 2, x=0 x+2, x>0 This is where it gets hard. I ...

chem

hydrogen gas can be produced in the laboratory through the reaction of magnesium metal with hydrochloric acid: mg(s)+2hcl(aq)→mgcl2(aq)+h2(g) when 21.0g of mg reacts, what volume, in liters, of h2 gas is produced at 20∘c and 760 mmhg ?

chemistry

I need help with Part 2 Part 1. Record the following for each of the three experiments: (a) Mass of the empty calorimeter (g): 11.600 g (b) Initial temperature in the calorimeter (C): 21.00 (c) Maximum temperature in the calorimeter from the reaction (C): 29.27, 34.78, 40.29 (...

Chemistry

Shown below is the chemical equation for the thermal decomposition of calcium carbonate. CaCO3(s) <-> CaO(s) + CO2(g) H°rxn = 175 kJ How will the amount (not concentration) of CaCO3(s) change with the following stresses? CO2(g) is removed? Decrease, Increase or No ...

Chemistry

When 0.500 g of an unknown compound was dissolved in 15.0 g benzene, the freezing point depression was determined to be 0320C . The molar mass of the unknown compound is ? g/mol. (The freezing point depression constant for benzene is 512C kgmol .

Math

When interest is compounded once a year, the formula for compound interest is A=P(1+r)t in the formula, A represents the amount of money after t years, p represents the principal, and interest rate written as a decimal. If p=$500 r=3% and t=2 What is the amount of compound ...

chemistry

For combustion of 10 grams of C4H10 excess of O2, You are obtained 25 grams of CO2 according to the reaction (to balance): C4H10+ O2→ CO2+ H2O Calculate the reaction yield of the reaction. please,could anyone help me to solve this problem.

Reaction Kinetics

I have been studying a journal, and their objective is to find the ignition temperature, which can shift a reaction from being kinetics-controlled to being diffusion-controlled. What is the advantage of a reaction being diffusion-controlled over a reaction being kinetics-...

chemistry

N2(g) + 3 F2(g) → 2 NF3(g) ΔH° = –264 kJ/mol ΔS° = –278 J/(mol∙K) a. Using the information provided above (only), calculate the maximum amount of non-PΔV work that can be accomplished through this reaction at a temperature of 500°C. b. ...

Chemistry

Which of the following statements is incorrect concerning the thermochemical equation below? 2SO3(g)  2SO2(g) + O2(g); H° = 198 kJ a. The enthalpy of the reactants exceeds that of the products. b. The reaction is endothermic. c. For the reaction 2SO2(g) + O2(g...

Chemistry

Which of the following statements is incorrect concerning the thermochemical equation below? 2SO3(g)  2SO2(g) + O2(g); H° = 198 kJ a. The enthalpy of the reactants exceeds that of the products. b. The reaction is endothermic. c. For the reaction 2SO2(g) + O2(g...

chemistry

1) What is the chemical formula for the compound formed between thallium(iii) and bromine? 2) What is the chemical formula for the compound formed between thallium(iii) and sulfur? HINT!: each compound wil be neutral. What is the charge of the thallium(iii) ion? What is the ...

AP Chem

How many mL of 3.84 M HCL are required to consume 4.12g of Zinc in the following reaction? Zn(s) + 2HCL(aq)----> ZnCl2(aq) + H2(g)

chem

what substance is oxidized in following reaction 4 HCl+MnO2 and Cl2+2H2O+MnCl2

Chemistry

determine the redox reaction represented by the following cell notation Mg Mg2 Cu2 Cu

Chem

What is the enthalpy for the following reaction? overall: C2H4+H2O--->C2H5OH is -1411kJ correct??

Chemistry

A piece of cadmium is placed in a solution in which [Cd^2+]=[Sn^2+]=1.00M. Will the following reaction proceed spontaneously? Cd(s)+Sn^2+(aq)-->Cd^2+(aq)+Sn(s)

chemistry

Consider the following reaction Al(OH)3 + 3HCL ____>ALCL3 How many milliltres of 0.8 M HCL will react with 2g of AL(OH)3 ??

College Chemistry

Estimate the enthalpy change for the following reaction OH(g)+CH4(g)==>CH3(g)+H2O(g)

chemistry

What is Delta H rxn for the following chemical reaction? H2O(l) + CCl4(l)-> COCl2(g) + 2HCl(g)

science

which of the following does not affect reaction rate balancin, temperature surface area or concentration?

chemistry

what are the products of the following reaction. CH3COOH+CH3CH2OH---> (there is an H+ above the dotted arrow line)

Chemistry

Find delta G knot for the following reaction: 2Ch3OH(l) + 3O2(g) --> 2CO2(g) + 4H2O(g)

chemistry

complete the following double displacement reaction and indicate the states: KCl+AgNO3=

chemistry

Calculate the standard reduction potential for the reaction of Cu(III) to Cu(II) Use the following data: 1) Cu^+3 + 2e^- -> Cu^+, E°1 = 1.28 V 2) Cu^+2 + e^- -> Cu^+, E°2 = 0.15 V 3) Cu^+2 + 2e^- -> Cu(s), E°3 = 0.34 V 4) Cu^+ + e^- -> Cu(s), E°4 = 0.52 V

chemistry

consider the following equilibrum reaction: 2NO yield N2 + O2. Take:delta H=-18.0KJ/M

chemistry

consider the following equilibrum reaction: 2NO yield N2 + O2. Take:delta H=-18.0KJ/M

Chemistry

For the following battery: Cd(s) | CdCl2(aq) || Cl–(aq) | Cl2(l) | C(s) Write the reduction half reaction for the C(s) electrode.

Chemistry

The equilibrium constant for the following reaction is 7.2 x 10-10. What is the [H+] in a solution 1.0 M of this acid? HCN + H2O --> H3O+ + CN-

Nuclear 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

Given the following reaction at equilibrium, if Kc = 1.90 x 1019 at 25.0 °C, Kp = __________. H2 (g) + Br2 (g) ↔ 2 HBr (g)

Chemistry

What coefficient of H+ balances the atoms in the following half-reaction? H^+ + MnO2 Mn^2+ + H2O A.1 B.2 C.3 D.4 I think this is B...?

CHEMISTRY HELP !!!!

Complete the following fission reaction 1/0 n + 235/92 U ---> 236/92 Te + _____ +2 (1/2)n a) 97/40 Zr b) 99/40 Zr c) 99/38 Sr d) 95/42 Mo e) 96/41 Y Answer is A or B not sure

chemistry

What is the value of A in the following nuclear reaction? 212/84Po→208/82Pb+A/ZX

chemistry

Determine if the following reaction is spontaneous under standard conditions. Zn(s) + 4 CN¡V(aq) + Ag2CrO4(s) „³ Zn(CN)42¡V(aq) + 2 Ag(s) + CrO42¡V(aq)

Chemistry

Balance the following redox reaction in basic solution. H2(g)+Fe3+(aq) ---> H2O(l)+Fe2+(aq)

Chemistry

I'm supposed to find the quantum numbers for a 5py orbital. I'm not sure how to do this, can anyone help? N=5 l = 4 3 2 1 0, for p you want l = 1 ml= -1 0 +1 representing px, py, and pz orbitals. ms= +1/2 and -1/2. Look at a diagram in your book for the px, py, and pz orbitals...

Calculus

Determine the equation of the line described by the given information. a) slope -2/3, passing through (0,6) b) passing through points (2,7) and (6,11) c) parallel to y=4x-6 passing through point (2,6)

chemistry

At constant volume, the heat of combustion of a particular compound is –3334.0 kJ/mol. When 1.569 g of this compound (molar mass = 125.76 g/mol) was burned in a bomb calorimeter, the temperature of the calorimeter (including its contents) rose by 5.173 °C. What is the heat ...

chemistry

At constant volume, the heat of combustion of a particular compound is –3323.0 kJ/mol. When 1.489 g of this compound (molar mass = 131.02 g/mol) was burned in a bomb calorimeter, the temperature of the calorimeter (including its contents) rose by 8.077 °C. What is the heat ...

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