a certain reaction has the following generaln form

72,980 results, page 43

chem

Which of the following compounds would be expected to form intermolecular hydrogen bonds in the liquid state? (Select all that apply.) HCO2H CH3OCH3 (dimethyl ether) CH3CO2H (acetic acid) CH3OH (methanol) thanks:)

english 3

In the following stanza from “I heard a Fly buzz—when I died—,” which words form a slant rhyme? The Eyes around—had wrung them dry— / And Breaths were gathering firm / For that last Onset—when the King / Be witnessed—in the Room —

Social Studies

1. Which of the following is NOT a reason that Oglethorpe and the trustees wanted to start the colony of Georgia? A. to help the poor who could not pay their bills B. to help the englich economy C. to form large plantations D. to provide defense I think A is my answer correct?

English

Identify the verb form that correctly completes the following sentence. Have you ever ____ the Skyrush roller coaster at Hershey Park? A. rode B. ride C. riding D. ridden Not 100% if it is A or D... leaning towards A???

psychology

Regarding eyewitness testimony, which of the following statements is TRUE? A. Most victims do not have an adequate weapon focus B. Victims certain of their testimony are usually more accurate C. Eyewitness testimony is generally very accurate D. Perception rarely provides an ...

math

the probability of a computer memory chip being defective is 0.02. which of ghe following statements is true? a) in a shipment of 1000 chips, it is certain that at least one will be defective. b) in a shipment of 100 chips, two will be defective c)the expected number of chips ...

chemistry

One reaction of iron with hydrochloric acid is represented by the following thermochemical equation. Fe(s) + 2HCl(aq) → FeCl2(aq) + H2(g); ΔH°= –87.9 kJ How much heat is liberated at constant pressure if 0.416 g of iron reacts with 42.0 mL of 0.457 M HCl?

College Chemistry

Consider the following reaction that occurs when natural gas is burned. CH4(g) + 2O2(g) ¨ CO2(g) + 2H2O(g) How many moles of water are produced when 6.2 mol of methane are burned? Assume that there is more than enough oxygen present.

Chemistry

Potassium hypobromite, KOBr, converts ammonia to nitrogen by the following reaction. 3KOBr + 2NH3 N2 + 3KBr + 3H2O To prepare 448.2 mL of dry N2, when measured at 22.3 °C and 777.3 torr, what is the minimum number of grams of KOBr required?

Chemistry

Potassium hypobromite, KOBr, converts ammonia to nitrogen by the following reaction. 3KOBr + 2NH3 N2 + 3KBr + 3H2O To prepare 448.2 mL of dry N2, when measured at 22.3 °C and 777.3 torr, what is the minimum number of grams of KOBr required?

Chemistry

Potassium hypobromite, KOBr, converts ammonia to nitrogen by the following reaction. 3KOBr + 2NH3 N2 + 3KBr + 3H2O To prepare 448.2 mL of dry N2, when measured at 22.3 °C and 777.3 torr, what is the minimum number of grams of KOBr required?

chemistry calculations

The following equilibrium partial pressures were measured at 750 deg C. PH2=0.387atm,PCO2=0.152atm,PCO= 0.180 atm,and PH2O=0.252atm. What is the value of the equilibrium constant Kp for the reaction? H2+CO2 ====CO+H2O

Wages Quick reply

All but which one of the following assumptions are included within the model of perfect competition? (Points : 1) employers seek to maximize profits workers have perfect information about wages and job opportunities available workers differ with respect...

biology

During mitosis, when does cleavage form? Does it form near the end of telophase or near the beginning?

Honors Chemistry

Fe2O3 + 2Al --> 2Fe + Al2O3 How many grams of Fe will form when 97.6g Al2O3 form? Please & Thank you

4th grade

write 31 hundred thousands in standard form and 23 ten thosands in standard form

Calculus

F(x) = 1-x and g(x) = 1/x Write in the form (ax + b)/(cx + d) a.What are all the possible values of a, b, c, and d? b.Find all the functions fo the form f (x) = (ax + b)/(cx + d) with the property that f o f^-1 = x

11th grade algebra 2

(1-7) write each function in vertex form (8-10) write each funtion in standard form? 1) Y=x^2+3x-10 2) Y=x^2-9x 3) Y=X^2+x 4) Y=x^2+5x+4 5) Y=4x^2+8x-3 6) Y=(3/4)x^2+9x 7) Y=-2x^2+2x+1 8) Y=(x-3)^2+1 9) Y=2(x-1)^2-3 10)Y=-3(x+4)^2+1

Math

Divide. Write the answer in simplest form. 8 1/6 divided by 2 1/24. I got 4 5/6 is this right? If so what's the simplest form.

Math

How do you write the square root of 3 in exponential form? or any other radical into exponential form

Spanish: Please Help

23. Write the correct verb form in the blank: yo/encontrar. yo ___________ (2 points) 24. Write the correct verb form in the blank: ella/cerrar. ella ___________ (2 points) 25. Write the correct verb form in the blank: nosotros/querer. nosotros ___________ (2 points) 26. Write...

Spanish: Please Help

23. Write the correct verb form in the blank: yo/encontrar. yo ___________ (2 points) 24. Write the correct verb form in the blank: ella/cerrar. ella ___________ (2 points) 25. Write the correct verb form in the blank: nosotros/querer. nosotros ___________ (2 points) 26. Write...

Chemistry

Iron pyrite (FeS2) is the form in which much of the sulfur exists in coal. In the combustion of coal, oxygen reacts with iron pyrite to produce iron(III) oxide and sulfur dioxide, which is a major source of air pollution and a substantial contributor to acid rain. What mass of...

Driver's Ed

1. The natural laws include the law of (1 point) speed limits. gravity*** railroad crossings. yielding. 2. Which of the following should determine whether you need to speed up or slow down? (1 point) how quickly you need to get somewhere how far above the speed limit you are ...

Chem

The entropy of combustion of benzoic acid is zero. This means that... a)combustion is not spontaneous here. b)combustion is spontaneous, however, since the reaction is exothermic. c)combustion is spontaneous, however, since the reaction is endothermic. d)combustion is ...

Chemistry

A first order reaction has an activation enery of 50.0kJ/mol. When a catalyst is added the activation energy of the catalyzed reaction is Ea/2. Calculate the ration of k(uncatalyzed)/k(catalyzed) at 25 degree C.

chemistry(check my answer)

From the Standard Potential Table in your general chemistry textbook: Which reaction has been chosen as the 'standard' against which every other reaction is measured? A. 2H+ + 2e–H2 B. Li+ + e–Li C. O2 + 4H+ + 4e–2H2O D. F2 + 2e–2F– E. H2 + 2e–2H– is it A

chem

The full inoic equation for an electrochemical cell is Br2 + Zn yields 2Br- + Zn2+. write the half reaction that occurs at the anode and the half reaction that occurs at the cathode

chemistry

when a zinc strip is placed in a copper nitrate solution, the strip becomes coated with copper. write down the oxidation half-reaction for the reaction that takes place.

11 U chemistry

Predict the products of a reaction between solid beryllium chloride and solid potassium,write the products in a balanced chemical equation also indicate what type of reaction this is.

Chemistry

if the initial concentration of the reactant in the first order reaction A→products is 0.64 mol/L and the half-life is 30 s, calculate the concentration of reactant 120 s after initiation of the reaction

Chemistry 104

A reaction rate doubles when the temperature increases from 0 degrees Celsius to 10 degrees Celsius, maintaining everything else equal. What is the activation energy for this reaction? (R = 8.314 J/mol K)

Chemistry 104

A reaction rate doubles when the temperature increases from 0 degrees Celsius to 10 degrees Celsius, maintaining everything else equal. What is the activation energy for this reaction? (R = 8.314 J/mol K)

chemistry

n an experiment, Ann mixes concentrated sulfuric acid with water in a reaction test tube. The walls of the test tube turn hot. What type of reaction has occurred?

Chemistry

In a particular redox reaction, MnO2 is oxidized to MnO4– and Cu2 is reduced to Cu . Complete and balance the equation for this reaction in acidic solution. Phases are optional. MnO2 + Cu^2+ ---> MnO4^- + Cu^+

chemistry

In an experiment, Ann mixes concentrated sulfuric acid with water in a reaction test tube. The walls of the test tube turn hot. What type of reaction has occurred?

CHEMISTRY

Write formulas for the compounds that form from Sr and each of the following polyatomic ion: NO−3, SO2−4, PO3−4. APPARENTLY SrNO6, SrSO4 , Sr3PO8 is wrong

CHEMISTRY

Write formulas for the compounds that form from Sr and each of the following polyatomic ion: NO−3, SO2−4, PO3−4. APPARENTLY SrNO6, SrSO4 , Sr3PO8 is wrong

Chemistry

What is the molar heat of reaction? When 0.732 g of Ca metal is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 119C is observed. Assume the solution's final volume is 200.0 mL, the density is 1.00 g/mL, and the heat capacity is 4.184 J/gC. (Note: Pay attention...

business communication

Which of the following best describes these sentences from a congratulations message? Heartiest congratulations on being named plant manager of Maxell Industries. I am certain that you richly deserve this promotion, and I am sure that you are now thinking of expanding your ...

English singulars and plurals

Question 1 A count noun describes something that what? cannot be divided into distinct units can be divided into distinct units has no plural has no singular Question 2 A noncount noun describes something that what? can be divided into distinct units has no plural uses a ...

chemistry BOB

is this the answer to B ) CH3CH2OH + 3O2 → 2CO2 + 3H2O In winemaking, the sugars in grapes undergo fermentation by yeast to yield CH3CH2OH and CO2. During cellular respiration, sugar and ethanol are "burned" to water vapor andCO2. Write a combustion reaction for ethanol...

Chemistry

I mixed 5ml H202 with 5ml KI with 5ml H2SO4 wit Na2So2O3 with 50ml. Now I am trying to figure out all the elementary steps for this reaction. A starch was added in this mixture to measure the reaction time with the thiosulfate and the I2. I was just wonder if anyone could give...

eth 125 culture diversity

• • Select an immigrant group from Ch. 4 of the text. Imagine yourself as a current member of that group, and consider the question, ―Would I want to immigrate to the United States , and why?‖ Think about what opinion you would have of the immigration process, ...

organic chemistry

What will be the effect of adding solid NaHCO3 to hot concentrated H2SO4? Why should the reaction vessel containing a synthesized ester be cooled first before neutralization? My Guess #1: Since neutralization is an exothermic process and the ester is in equilibrium with its ...

chem for Dr. Bob

In the reaction 2 H2(g) + S2(g) reverse reaction arrow 2 H2S(g), Kc = 6.28 multiplied by 103 at 900 K. What is the equilibrium value of [H2] if at equilibrium [H2S] = [S2]1/2?

chemistry reaction rate

2NO(g) + O2(g) → 2NO2(g) + 112 kJ what do you do to increase the reaction rate? decrease in pressure or increase in concentration of NO? HELP!

Chem13

The reaction CO(g) + 2 H2(g)--> CH3OH(g) was studied using a 5.19 L flask and an initial condition of 26.9 g CO and 2.34 g H2. At equilibrium, the flask contains 8.34 g CH3OH. Calculate Kc for this reaction.

chemistry

A reaction occurs where the concentration of reactant A changes from 0.74 moles/liter to 0.63 moles/liter in 20 seconds. what is the average rate of reaction?

chemistry

The percentage yield for the reaction PCL3+Cl2-->PCL5 is 83.2%. What mass of PCL5 is expected from the reaction of 73.7g of PCL3 with excess chlorine?

chemistry

Consider the reaction 2 X2Y+Z2 ⇌ 2 X2YZ which has a rate law of rate= k[X2Y][Z2] Select a possible mechanism for the reaction.

chemistry

The body-centered cubic unit cell of a particular crystalline form of silver is 2.2887A on each side. Calculate the density of this form of silver?

Pre Calc

Derive the equation of the locus of all points that are equidistant from the point F(-3,4) and the line y=-2. Leave your answer in general form. [General Form: ax^2+by^2+cx+dy+e=0]

french- affirmative commands

When you are putting a verb into the tu form of an affirmative comand like don't eat any. Why is it N'en mange pas and not manges (the tu form of manger)

Science

For example HNO2 + H20 ----> H30+ NO2- I don't understand how the hydronium ions form. How do I figure out if a OH- or H30+ will form from the reactant side.

precalculus

Given f(x)=x^2 -3x, find f(2x) in simplest form. so i got that you plug 2x in for x: f(2x)=2x^2-6x is that simplest form? or should it be further condensed into 2x(x-6)? thanks for your time i really appreciate it (:

math

A cat can walk 2,190 miles in 2 hours. How can 2,190/2 be written in expanded form? 1) 2,000+100+90/2 2)200+90+1/2 Write it in quotation form.

Immigration

200-300 word summary that answers all of the following questins: Should United States government policy favor certainkinds of immigrants? Should citizenship preference be givento the neediest applicants? The most talented? the most Oppressed? the Richest? Should applications ...

Chemistry

A first order reaction has a rate constant of 0.0733 s−1. What is the half life for this reaction in seconds? when I plug in the numbers in the formula, my answer was 9.45. But on the computer it says the answer is wrong. How do I find the right answer?

Algebra

10. Write an equation in point-slope form for the line through the given point with the given slope. (5, 2); m=3 a. y+2=3(x-5) *** b. y+2=3x-5 c. y-2=3(x+5) d.y-2=3(x-5) 11. Write an equation in point-slope form for the line through the given point with the given slope. (-10,-...

Chemistry

A mixture initially contains A,B, and C in the following concentrations: A1 = 0.300 M, B1 = 1.15M, and C1 = 0.350 M. The following reaction occurs and equilibrium is established: A+2B <---> C At equilibrium, A2 = 0.190M and C2 = 0.460M. Calculate the value of the ...

chemistry

A volume of 100mL of 1.00 M HCl solution is titrated with 1.00 M NaOH solution. You added the following quantities of 1.00 M NaOH to the reaction flask. Classify the following conditions based on whether they are before the equivalence point, at the equivalence point, or after...

Chemistry

When the oxide of generic metal M is heated at 25.0 °C, only a negligible amount of M is produced. O2M(s) ----> M(s) +O2(g) delta G= 288.9 Kj/mol When this reaction is coupled to the conversion of graphite to carbon dioxide, it becomes spontaneous. What is the chemical ...

satp conditions

Calcium hydride reacts with a vast excess of water to form calcium hydroxide and hydrogen gas. (See the periodic table.) (a) Write a balanced chemical equation for the reaction. (Use the lowest possible coefficients. Include states-of-matter under SATP conditions in your ...

Chemistry

Suppose you tired to carry out a double-replacement reaction by mixing together equal volumes if a solution that contained dissolved NaF and a solution NaCl. Would you expect a reaction, if Si write the balanced chemical equation

chemistry

what would the written chemical reaction be to this problem? How many grams of hydrochloric acid should we use so we have exactly enough to react with 40g of sodium hydroxide? You'll need to write a chemical reaction, balance it, and then perform your calculation.

Chemistry

Using standard enthalpies information, calculate the standard enthalpy change for this reaction: a) (thermite reaction) 2Al(s) + Fe2O3(s) = Al2O3(s) + 2Fe(s) b) Mg(OH)2(s) = MgO(s) + H2O(I) c) N2O4(g) + 4H2(g) = N2(g) + 4H2O(g) d) SiCl4(I) + 2H2O(I) = SiO2(s) + 4HCI(g)

Chemistry

Using standard enthalpies information, calculate the standard enthalpy change for this reaction. a)(thermite reaction) 2Al(s) + Fe2O3(s) = Al2O3(s) + 2Fe(s) b)Mg(OH)2(s) = MgO(s) + H2O(I) c)N2O4(g) + 4H2(g) = N2(g) + 4H2O(g) d)SiCl4(I) + 2H2O(I) = SiO2(s) + 4HCI(g)

Chemistry URGENT!

If the reaction of 0.500 grams of aluminum metal with excess aqueous HCl releases 9.72 kJ of heat, what is the ΔH value for the reaction? 2 Al(s) + 6 HCl(aq) → 2 AlCl3(aq) + 3 H2(g) All I have is: .500gAl*(1 mol Al/26.98gAl) Please and thank you so much!

Chemistry 2

A scientist studying the reaction between decaborane (B10H18) and oxygen mixed 1.00 x 10^2 grams fo oxygen. Compute the masses of all substances present after the reaction went to completion, generating B2O3 and water as the only products.

chemistry

Consider the following reaction CaCl2(aq) + 2Ag2SO4(aq) ! CaSO4(?) + 2AgCl(?) .Which of the following statements is true? 1. Both CaSO4 and AgCl will precipitate from solution. 2. Neither CaSO4 nor AgCl will precipitate from solution. 3. CaSO4 will precipitate from solution, ...

math

A certain sweepstakes ticket has four categories of prizes with the following probabilities of being won: Prize Probability $100,000 1/500,000 $50,000 1/250,000 $20,000 1/200,000 $10,000 1/100,000 What is the expected value of buying these sweepstakes tickets? Select one: a...

math

A certain sweepstakes ticket has four categories of prizes with the following probabilities of being won: Prize Probability $100,000 1/500,000 $50,000 1/250,000 $20,000 1/200,000 $10,000 1/100,000 If each ticket costs $1.00, what is the expected gain or loss? Select one: a. $....

Chemistry

-CORRECTION- N2 + O2 --> 2 NO change in heat (delta H)= 43.2 kcal based on the reaction, which statement is true? a) 43.2 kcal are consumed when 1.00g of O2 reacts b) 43.2 kcal are consumed when 1.00g of N2 reacts c) 43.2 kcal are consumed when 1.00g of NO is produced d) 43...

math - please check me

Identify the amount in the following application In a shipment if 1200 parts, 60 were found to be detective. What percent of the parts were faulty? a. 60 b. 1200 c. what percent d. shipment answer: c Write the following in the standard form of a number. Two billion, nine ...

chemistry

What charge would most likely form on an ion from elements in the following groups? a) Group 1A b) Group 2A c) Group 6A d) Group 7A

biology

which of the following is not a characteristic of life A. maintains homeostasis B. composed of cells C. composed of atoms D. carries out metabolism which of the following must be true to consider something to be alive? A. it must be able to replicate it's DNA B. it must be ...

biology

which of the following is not a characteristic of life A. maintains homeostasis B. composed of cells C. composed of atoms D. carries out metabolism which of the following must be true to consider something to be alive? A. it must be able to replicate it's DNA B. it must be ...

chemistry

for the reaction: 4NH3+5O2=4NO+6H2O; 15.0g of NH3 and 27.5g of O2 were reacted. a). which is the limiting reactant? b).how many moles of NO are formed from the limiting reactant in the above reaction. what would be the first step in this problem?

Chem 3A

please help me with this chemistry problem. 1) Write out a balanced chemical reaction equation for the reaction of magnesium with hydrochloric acid, and then What is the Theoretical Yield after balancing the chemical equation?

general chemistry

In a study of the effect of alcohol dehydrogenase on alcohol at 25.0 °C, the concentration of ethanol in a first-order reaction decreased from 220.0 mmol/L to 56.0 mmol/L in 1.22 x 104s. What is the rate constant for the reaction at 25.0 °C?

Chemistry

Calcium oxide reacts with water in a combination reaction to produce calcium hydroxide: A 2.00-g sample of is reacted with 1.93 g of . How many grams of water remain after the reaction is complete? 0.0714 1.29 0.00 1.04 0.00396

Chemistry

What are the Oxidation and Reducation reactions for these equations : BaCl2 + NaHCO3 -> BaCO3 + NaCl + HCl (carbon is the reduction reaction, but I don't know what the oxidation reaction is) CaCO3 + HCl -> CaCl2 + CO2 + H2O

chemistry

Ethylene gas (C2H2) can be formed from the reaction of calcium carbide (CaC2) with water. What is the reaction rate if 14.2 grams of ethylene gas are produced over 4.00 seconds? The units are mol/s.

Chemistry

A precipitation reaction takes place when a water solution of potassium phosphate, K3PO4, is added to a water solution of cobalt (II) chloride, CoCl2 Write a balanced equation for this reaction

chemistry

an endothermic reaction a to b has an activation energy of 15 kcal per mol and heat of reaction 5 kcal per mol the activation energy for the reaction b to a will be ?

Chemistry

I am stuggling with my chemistry experiment. I am given thr following: The reaction of citric acid and sodium bicarbonate is written as H3C6H5O7(aq) + 3NaHCO3(aq) --> Na3C6H5O7(aq) + 3H2O(l) + 3CO2(g) 1.) Mass of cup A, water, and stirrer = 54.3 g 2.) Mass of sodium ...

Chemistry 1

Imagine that a hypothetical life form is discovered on our moon and transported to Earth. On a hot day, this life form begins to sweat, and it is determined that the heat of vaporization of its sweat is 215 cal/g. The scientist observing the extraterrestrial life form also ...

Mathematics

write the following simultaneous equations in the form of AX= B where A,X and B are matrices 11x+6y=6 9x+5y=7 hence write the solution for x and y as a product of two matrices.

Mathematics

write the following simultaneous equations in the form of AX= B where A,X and B are matrices 11x+6y=6 9x+5y=7 hence write the solution for x and y as a product of two matrices.

Mathematics

write the following simultaneous equations in the form of AX= B where A,X and B are matrices 11x+6y=6 9x+5y=7 hence write the solution for x and y as a product of two matrices.

Mathematics

write the following simultaneous equations in the form of AX= B where A,X and B are matrices 11x+6y=6 9x+5y=7 hence write the solution for x and y as a product of two matrices.

Mathematics

write the following simultaneous equations in the form of AX= B where A,X and B are matrices 11x+6y=6 9x+5y=7 hence write the solution for x and y as a product of two matrices.

Pre-Cal.

find all the zeros of the following polynomial. Write the polynomial in fraction form. Show all the work. f(x)= x^4+3x^2-40

chemistry

how do u do a redox balance of the following reaction : Fe(NH4)2(SO4)2*6H2O + H2C2O4 + K2C2O4 + H2O2 -> K3Fe(C2O4)3*3 H2O + (NH4)2SO4 + H2SO4 +H2O i only know Fe2+ -> Fe3+ +1e-

chemistry

Solid magnesium metal reacts with chlorine gas according to the following equation: Mg + Cl2 --> MgCl2 What mass of magnesium chloride is formed in the reaction between 7 g of Mg and 13.2 g of Cl2 is this correct 7 g+13.2 g = 20.2 grams ?

Chemistry

Determine the volume of 0.250 M KOH solution required to neutralize each of the following samples of sulfuric acid. The neutralization reaction is: H2SO4(aq) + 2KOH(aq) = K2SO49aq) + 2H2O(l) Find: 15 mL of 0.250 M H2SO4

Chemistry

Which one of the following pairs of reactants would react together in a Lewis Acid/Lewis Base reaction? a. KOH and HNO2 b. NaOH and HCl c. CH3COOH and HF d. Ag+ and NH3 e. HClO and NH3

Chemistry

Consider the following cell: Pt|H2(g, 0.460 atm)|H (aq, ? M)||Ag (aq, 1.00 M)|Ag(s) If the measured cell potential is 1.00 V at 25 °C and the standard reduction potential of the Ag /Ag half-reaction couple is 0.80 V, calculate the hydrogen ion concentration in the anode ...

Chemistry 2

_________is reduced in the following reaction: Cr2O72-+6S2O32-+14H+>2Cr3+ + 3S4O62- + 7H20 A. H+ B. Cr6+ C. S4O62- D. S2+ E. O2- I come out with Cr2O72 but that's not an answer so my next one is B. Cr6+ am I correct?

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