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

77,997 results, page 35

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 - 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 ...

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

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 ...

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

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

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 ...

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

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 ...

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

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

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...

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, ...

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 ...

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...

chemistry

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

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.

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

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) → ...

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

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

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 ...

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

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)

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

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 ...

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.

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

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. ...

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

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 ...

Chemistry

At constant volume, the heat of combustion of a particular compound is –3547.0 kJ/mol. When 1.239 g of this compound (molar mass = 196.58 g/mol) was burned in a bomb calorimeter, the temperature of the calorimeter (including its contents) rose by 8.539 °C. What is the heat ...

chemistry

At constant volume, the heat of combustion of a particular compound is –3599.0 kJ/mol. When 1.365 g of this compound (molar mass = 102.90 g/mol) was burned in a bomb calorimeter, the temperature of the calorimeter (including its contents) rose by 7.819 °C. What is the heat ...

chem

At constant volume, the heat of combustion of a particular compound is –3209.0 kJ/mol. When 1.829 g of this compound (molar mass = 159.29 g/mol) was burned in a bomb calorimeter, the temperature of the calorimeter (including its contents) rose by 6.753 °C. What is the heat ...

Chemistry

At constant volume, the heat of combustion of a particular compound is –3949.0 kJ/mol. When 1.331 g of this compound (molar mass = 141.44 g/mol) was burned in a bomb calorimeter, the temperature of the calorimeter (including its contents) rose by 3.837 °C. What is the heat ...

chemistry

At constant volume, the heat of combustion of a particular compound is –3947.0 kJ/mol. When 1.311 g of this compound (molar mass = 136.58 g/mol) was burned in a bomb calorimeter, the temperature of the calorimeter (including its contents) rose by 4.343 °C. What is the heat ...

chemistry

sometimes,instead of percentage composition, you will have the composition of a mass sample. using the actual mass of the sample, determine the empirical formula for compounds that have the following analyses. b. a 13.07g sample of an unknown substance is composed of 9.48g of ...

Chemistry

Which of the following is NOT true for ΔGrxn? A.) If ΔG°rxn > 0, the reaction is spontaneous in the forward direction. B.) If Q = 1, then ΔGrxn = ΔG°rxn.If ΔG°rxn = 0, the reaction is spontaneous in the reverse direction. C.) If ΔG°rxn >...

physics

a race car can be slowed with a constant acceleration of -11m/s2. a.if the car is going 55m/s,how many meters will it travel beofre it stops? b.how many metes will it take to stop a car going twice as fast?

chemistry

The mass of initial magnesium metal used do not affect calculation of determining the empirical formula. Why? Explain in terms of chemical laws.

Psychology

If science depends on observation of empirical data, how can social scientists study nonobservable phenomena, such as thought patterns or imagery?

Chemistry

7.0 mL of 0.64 M HBr reacts with 38 mL of 0.39 M KOH. 1) What are the moles of acid before the reaction? 2) What are the moles of base before the reaction? 3) What is the limiting reagent? 4) How many moles of excess reagent are there after the reaction? 5) what is the ...

anatomy and physiology

Which of the following processes is achieved through osmosis?

Math

Which of the following exponential functions goes through the points (1, 6) and (2, 12)? A.f(x)= 3(2)^x B.f(x)= 2(3)^x C.f(x)= 3(2)^-x D.f(x)= 2(3)^-x

Science

When elemental sulfur,S8,is heated with AgF,a gas forms that contains only sulfur and fluorine. The following tests were done to characterize this gaseous product. *The density of the gas was found to be 0.807g/L at 152mmHg and 35 degrees celsius. *When the gas reacts with ...

chemistry

Given overall reaction: P4 + 10Cl2 ---> 4PCl5 Delta H for the reaction = ? PCl5 -----> PCl3 + Cl2 Delta H = +157 kJ P4 + 6Cl2 ----> 4PCl3 Delta H = -1207 kJ Calculate the Delta H for the overall reaction.

Chemistry

For a reaction N2+O2=2NO If Kc=10-30 at 25°C One Can predict with solid reason? (1) More NO is formed (2) The forward reaction goes to completion (3) The backward reaction goes to completion (4) More reactant can consumed

chemistry

When 0.500 g of an unknown compound was dissolved in 15.0 g benzene, the freezing point depression was determined to be 0.320 C. The molar mass of the unknown compound is ____ (The freezing point depression constant for benzene is 5.12 C kg/mol. )

9th grade chemistry

if you have 55.6 grams of nitrate ions in a compound that consists of nitrate ions and plumbous ions, how many grams of the compound do you have? how do i do this problem im completely stuck!?

Chemistry

A gaseous reaction occurs at a constant pressure of 50.0 atm and releases 69.8 kJ of heat. Before the reaction, the volume of the system was 8.80 L . After the reaction, the volume of the system was 2.80 L . Calculate the total internal energy change, change in U , in kilojoules.

English

I forgot to include the following sentences which are part of the same reading comprehension. Thank you very much. 8) Why couldn't they fly to Merida? Because their seats hadn't been booked. 9) Does the tourist regret going to Merida? Yes, he/she does. He says that if he had ...

finance

I would like to enquire if you could help with the following assignment question. The exact assignment question is: Explain how an investor or analyst should analyse a company's financial statements in order to gain the maximum insight for valuation purposes>Your discussion...

finance

I would like to enquire if you could help with the following assignment question. The exact assignment question is: Explain how an investor or analyst should analyse a company's financial statements in order to gain the maximum insight for valuation purposes>Your discussion...

science, biology

What about combustion reactions makes them different from either synthesis or decomposition reactions?

math factoring

6x4-5t3-200t-163000 how do you factor this it cant be done by common factor or decomposition method..help!!

physics

The classify the as synthesis, decomposition, Single replacement. Double replacement. 2 Al +3NiBr2. 2AlBr3+3Ni

Chemistry - Mole Ratio

How many moles of oxygen are produced from the decomposition of 3.4g of hydrogen peroxide? How many molecules of O2 are produced?

chemistry

Write balanced equations to show the thermal decomposition of calcium nitrate and sodium nitrate.

chemistry

If a sample of a compound of carbon and oxygen contains 3.00g of carbon and 8.00g of oxygen, what is the mass percent of carbon in the compound? A. 27.3% B. 25.0% C. 37.5% D. 3.67% E. 2.67%

Math

write the partial fraction decomposition step by step (-5x^2-8x-3)/(x^3+x^2+x)

Math

write the partial fraction decomposition step by step ((5x-1)/(x^2+4)) - ((4)/(x^2+4)^2)

physics

A bead on a fixed ring and a spring A ring fixed to a support at the top is hanging vertically. A bead of mass m slides through the ring and is connected to the support through a spring of stiffness k as shown in the figure-1. The length of the unstretched spring is almost ...

Chemistry

Can you please someone check my answer for me? a)Determine the number of grams in 0.750 moles of the compound Iron(II)phosphate: Fe3(PO4)2. Answer: b)How many atoms of iron are in 0.750 moles of the compound Iron(III)oxide? Answer:

chemistry

A 2.97 g sample of a molecular compound is dissolved in 103 g of tetrachloromethane (carbon tetrachloride). The normal boiling point of the solution is 61.51C, the normal boiling point of CCl4 is 61.2C. The boiling point constant for CCl4 is 4.95 K · kg/mol. What is the ...

Chemistry

A 5.80 g sample of SiH4 and an excess of oxygen were placed in a reaction container surrounded by 3.40 kg of water. The initial temperature of the water was 14.10°C. At the end of the reaction, the temperature of the water was 48.90°C. Assume the heat was completely absorbed...

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