a certain reaction has the following generaln form

73,810 results, page 38

College Chemistry

Consider the reaction. 4Fe(s) + 3O2(g) ¨ 2Fe2O3(s) If 0.500 mol of Fe reacts with 0.400 mol of O2, what are the limiting reactant and the theoretical yield in moles of Fe2O3 for the reaction, respectively?

Chem 2

need to figure out how to calculate. the value of DeltaH for the reaction below is -72kj_____kj of heat are released when 1.0 mole of HBr is formed in this reaction. H2(g)*Br2(g)> 2HBr(g) I know the answer is 36 but need help

Chemistry

Consider the reaction 3CH_4(g)rightarrow C_3H_8(g)+ 2H_2(g). Calculate delta G at 298 K if the reaction mixture consists of 40atm of CH_4, 0.015atm of C_3H_8, and 2.3×10^−2atm of H_2.

Biology

What will happen to the enzyme activity if both competetive and non-competetive inhibitors appear at the same time together with substrates in a reaction? Which inhibitor will affect the rate of the reaction in more?

Biology

What will happen to the enzyme activity if both competetive and non-competetive inhibitors appear at the same time together with substrates in a reaction? Which inhibitor will affect the rate of the reaction in more?

Grade 9th

If 6.5g of zinc reacts with 5.0g of HCL,according to the reaction.Zn + 2HCL:zncl2+h2 Which substance is the limiting reaction? How many grams of the reactant remains unreactant? How many grams of hydrogen would be produce?

science

Using your reaction time, estimate the diestance a car would travel at 20m/s (45 mi/h) before you could apply the brakes. To get the deistance in meters you multiply the speed in m/s by your reaction time in seconds

chemistry

'24.6 mL of 0.488 M NaCl is added to 24.6 mL of 0.312 M AgNO3. How many moles of AgCl would precipitate? What would be the concentrations of each of the ions in the reaction mixture after the reaction? Ion Concentration (M) Ag+ M NO3- M Na+ M Cl- M'

Chemistry

Consider the generic reaction between reactants A and B: 3A+4B→2C How many moles of B will be in the reaction vessel once the reactants have reacted as much as possible? (Assume 100% actual yield.)

Chemistry

A cube of solid reactant with sides of 1.00 cm² is submerged in a liquid and reacts to form a gas product at an initial rate of 20 mL/s. The solid-liquid interface is 6.0cm² of surface area. If you sliced this cube (like a block of cheese) into 10 slices, and then replaced ...

Physical Science

Hello, I need some help with the following question. Thank You, When an object is placed 8mm from a concave spherical mirror, a clear image can be projected on a screen 16 mm in front of the mirror. If the object has a height of 4 mm, the height of the image is? I think it's 2...

chemistry

I have been staring at this one for awhile now... I would so appreciate any help on approaching this problem! A certain sample of coal contains 1.6 percent sulfur by mass. When the coal is burned, the sulfur is converted to sulfur dioxide. To prevent air pollution, this sulfur...

chemistry

if you have one mole of CH3CH3(g) + 2 moles of Cl2 (g) and form one mole of C2H4Cl2 (l) + 2 moles of HCl (g) assuming a 90% yield calculate the amount of each reactant needed to form 1.5 kg of product I started the problem following the rules from the chemistry stochiometry ...

Chemistry

I have no idea how to do this problems can somebody help me: 1.How many mL of and oxygen gas can be produced form the termal decmpositon of 0.340 g of hydrogen peroxide at 700°C and 755 mm Hg? 401 mL 803 mL 1200 mL 1610 mL 2.How many mL of oxygen gas at 25.0°C and 755 mm Hg ...

chemistry

The quantity of antimony in an ore can be determined by an oxidation-reduction titration with an oxidizing agent. The ore is dissolved in hot, concentrated acid and passed over a reducing agent so that all the antimony is in the form Sb3 (aq). The Sb3 (aq) is completely ...

Chemistry

A piece of solid magnesium is reacted with hydrochloric acid to form hydrogen gas: Mg (s) + 2HCl (aq) ---> MgCl2 (aq) + H2 (g) What volume of hydrogen gas (in mL) is collected over water at 25 degrees Celsius by reaction of 0.450 g of Mg (AW= 24.3 g/mol) with 50.0 mL of 1.0...

Chemistry

How do you know that a given reaction is not an acid base reaction? (apart from the fact that it should have an acid and a base and it should be a double displacement reaction)? I mean I know acids have protons (H+) and bases have hydroxides (OH-) but there are so many other ...

Art

In the image, Green Wheat Fields, Auvers by Vincent van Gogh, which of the following elements was not used to create the principle of harmony? A. Colors B. Form C. Line D. Texture Is the answer B?

biology,chemistry,physics

the contact process prepares purest form of sulphuric acid 2so2+o2=2so3 calculate its kp if following concentrations are found at equilibrium so2=0.59,o2=0.05 and so3=0.259

social studies

which of the following reasons was least important in Texas decision to secede A. support for slavery B. opposition to tariffs C.desire to form calvary units D. belief in states rights

Chemistry

For the following reaction, Kp = 3.5 104 at 1495 K. H2(g) + Br2(g) 2 HBr(g) What is the value of Kp for the following reactions at 1495 K? (a) HBr(g) 1/2 H2(g) + 1/2 Br2(g) (b) 2 HBr(g) H2(g) + Br2(g) (c) 1/2 H2(g) + 1/2 Br2(g) HBr(g)

Organic chem

When you react 1-octene wih borane tetrahydrofuran solution and hydrogen peroxided over NaOH and water... (hydroboration- oxidation reaction) how do you run the reaction differently to improve the yield of the major product 1-octanol?

Chemistry

The given reaction, 2N2O5 4NO2 + O2, follows first-order kinetics and has an activation energy of 103 kJ mol-1. At 298 K, k = 0.0000354 s-1. What is the half-life (min) for this reaction at 338 K ? Round your answer to 3 significant figures.

chemistry

Sulfuric acid is dripped onto samples of three metals: silver, =zinc, and aluminium a) Use the activity series to determine whether a reaction will occur with each metal b) Write a chemical equation for each reaction that occurs

AP Chem

At 25 oC, Kc = 0.145 for the following reaction in the solvent CCl4. 2BrCl <----> Br2 + Cl2 A solution was prepared with the following initial concentrations: [BrCl] = 0.0482 M, [Br2]= 0.0307 M, and [Cl2]= 0.0277 M. What will their equilibrium concentrations be? How do i...

Chemistry

What is the maximum mass, in grams, of NH3 that can be produced by the reaction of 1.0 g of N2 and 1.0 g of H2 using the reaction below? N2+H2→NH3 (not balanced) What is the maximum mass, in grams, of that can be produced by the reaction of 1.0 g of and 1.0 g of using ...

Chemistry

What is the maximum mass, in grams, of NH3 that can be produced by the reaction of 1.0 g of N2 and 1.0 g of H2 using the reaction below? N2+H2→NH3 (not balanced) What is the maximum mass, in grams, of that can be produced by the reaction of 1.0 g of and 1.0 g of using ...

CHEMISTRY

HOW MANY GRAMS OF CO2 WOULD BE FORMED FROM 20 GRAMS OF C6H6 IN THE FOLLOWING REACTION? 2 C6H6 + 15O2=12CO2 +6 H2O

chemistry

What is DG° at 298 K for the following reaction? Pb(s) + PbO2(s) -> 2PbO(s) Substance DG°f (kJ/mol) at 298 K PbO(s) –187.9 PbO2(s) –217.3

Chemistry

Calculate E, E^o and (delta)G^o for the following cell reaction: Mg(s) + Sn2+(aq) (yields) Mg2+(aq) + Sn(s) [Mg2+] = 0.045 M, [Sn2+] = 0.035 M

chemistry

Calculate Hrxn for the reaction below. 2 NOCl(g) N2(g) + O2(g) + Cl2(g) You are given the following set of reactions. 1/2 N2(g) + 1/2 O2(g) NO(g) H = 90.30 kJ NO(g) + 1/2 Cl2(g) NOCl(g) H = -38.6 kJ

Chemistry

Given Ka values of 5.76×10^-10 & 4.8×10^-10, for NH4+ anf HCN.what is the equilibrium constant for following reaction? NH4+ + CN- >< NH3 + HCN

spaniiiiisssshhh

1. With what materials are most houses in Mérida built? A. wood and plaster B. stone and concrete blocks C. wrought iron 2. Which of the following is the correct Spanish word for "bed"? A. la cama B. el closet C. el dormitorio 3. What is not true about modern advances in ...

CHEMISTRY

Nitrogen and hydrogen react to form ammonia. Consider the mixture of N2 and H2 in a closed container as illustrated below. The container contains 6 hydrogen atoms and 6 nitrogen atoms (all diatomic) Assuming the reaction goes to completion, draw a representation of the product...

Chemistry Problem

At 25 oC, Kc = 0.145 for the following reaction in the solvent CCl4. 2BrCl <----> Br2 + Cl2 A solution was prepared with the following initial concentrations: [BrCl] = 0.0482 M, [Br2]= 0.0307 M, and [Cl2]= 0.0277 M. What will their equilibrium concentrations be? How do i...

Physics

A car starts from a certain point at a velocity of 100 kph. After 20 seconds, another car staring from rest, starts at the same point following car A at a uniform acceleration of 3 m/s². Assuming that the road is boundless will car B overtake car A? If yes, where and when?

chemistry

how many grams of lithium sulfate will be formed when 25 grams of sulfuric acid react with an excess of lithium hydroxide in the following reaction

biochemistry

2. Given the following data, calculate the Keq for the denaturation reaction of β-lactoglobin at 25 oC. Δ Ho = -88 kJ/mol, Δ So = 0.3 kJ/mol

Chem

Given the following reaction: 4 KO2 + 2 H2O + 4 CO2 ==> 4 KHCO3 + 3 O2 How many moles of O2 will be produced if 3.27 moles of CO2 react completely?

Chemistry

Which of the following is true concerning the reaction below? H2S + HNO3 → S + NO + H2O A. S is reduced. B. H is oxidized. C. N is reduced. D. O is oxidized. ***

CHEMISTRY

For the following reaction, what mass of SIC is made from120.2g of SIO2 and 120g of C? SiO2(s) + 3C(s) ---SiC(s) +2CO(g)

CHEMISTRY

For the following reaction, what mass of SIC is made from120.2g of SIO2 and 120g of C? SiO2(s) + 3C(s) ---SiC(s) +2CO(g)

chemistry

Calculate the standard free-energy change for the following reaction at 25 °C. 2Au^3+(aq) + 3Ni(s) -->2Au(s) + 3Ni^2+(aq)

CHEMISTRY

The equilibrium constant KP for the following reaction is 4 atm^2 at 300 K. AB(s) ---> A(g) + B(g) What is the equilibrium pressure of A(g) and B(g) above AB(s) at 300 K? What is KC at 300K?

chemistry

Given the following information: Ni(OH)2(s) Ni2+(aq) + 2 OH (aq) Ksp=6.0 x 10 16 H2O(l) H+(aq) + OH (aq) Kw=1.0 x 10 14 What is the equilibrium constant for the reaction, Ni(OH)2(s) + 2 H+(aq) Ni2+(aq)+ 2 H2O(l)

math

the disney golf classic starts with 64 golfers.the golfers form pairs and each pair plays a match.the losers drop out and the winners of each pair then form new pairs and play again.then those winners form pairs and play.this continues until one wins.

ENGLISH

6. The following words share a denotative meaning. Which one has a negative connotation? (1 point) confident certain decisive demanding ~ 7. Read the following Chippewa song. Identify its purpose. A loon I thought it was But it was My love's splashing oar. (1 point) to ...

chemistry

Can someone help me finish this equation, please? We're adding Magnesium to Copper sulfate and getting Copper. This is what I have as of now: CuSO4+Mg===>Cu I'm guessing it is a single replacement, so should I add MgSO4 to the right? But then my lab procedure says that we ...

maths PLEASE HELP

Can you give me some help with this question im not sure how to even start in a reaction A to P the mass of A at any given time T is Mt and the rate of transformation of A at time T is prportional to Mt given that the original mass of A is 130g and that 50g has been ...

Statistics

. Suppose a certain species of fawns between 1 and 5 months old have a body weight that is approximately normally distributed with mean kilograms and standard deviation kilograms. Let x be the weight of a fawn in kilograms. Convert the following x interval to a z interval. ...

Math

A pathologist, trying to identify a bacterial infection, places a sample in a growth chamber and measures 1000 bacteria at the end of day 5 of the test. From daily measurements, the growth rate of the number of bacteria is determined to be 5% per day. Note that: A linear ...

Chemistry

catalyst: a substance that changes the speed of a chemical reaction without affecting the yield or undergoing permanent chemical change* As you can see NO (nitrogen monoxide) did not undergo a permanent change. *http://www.chem.purdue.edu/gchelp/gloss/catalyst.html Lance, ...

Spanish please help

I have no idea how to do these. Will somebody please help. Thank you so much. 3. Fill in the blank with the correct verb form: yo/pensar. Yo __________ 4. Fill in the blank with the correct verb form: ella/entender. ella __________ 5. Fill in the blank with the correct verb ...

Into. Chemistry

I'm trying to do this precipitation reaction problem, but I don't understand part of it. The question is: Does a precipitate form when aq. soultions of potassium nitrate (KNO3) and sodium iodide (NaI) are mixed? Then it lists the solutions for the two: KNO3(aq) --> K+(aq...

CHEM-last part prob.

Aluminum reacts with chlorine gas to form aluminum chloride via the following reaction: 2Al(s) + 3Cl2(g) -> 2AlCl3(s) You are given 19.0g of aluminum and 24.0g of chlorine gas. a)If you had excess chlorine, how many moles of of aluminum chloride could be produced from 19.0g...

Math

It takes 11 cups of flour to make 3 loaves is bread. What is the ratio of cups of flour to loaves of bread? Write the ratio 3 ways: Word form: Colon form: Fraction form:

AP Chem

For the following equilibrium system, which of the following changes will form more CaCO3? CO2(g) + Ca(OH)2(s) <--> CaCO3(s) + H2O(l) deltaH(rxn) = -113 kJ My choices are: a) Decrease temperature at a constant pressure (no phase change) B) Increase volume at a constant ...

math

The number of individuals N in a population of a certain species is given by the following function of time, t: N(t)= 100/(1+9e^-t), t>=0 a.)how many ppl are in the population initially(at t=0) b.)determine the size ofa the populations as tgoes towards infiniti? c. what is ...

physics

You pull a short refrigerator with a constant force across a greased (frictionless) floor, either with horizontal (case 1) or with tilted upward at an angle 38° (case 2). (a) What is the ratio of the refrigerator's speed in case 2 to its speed in case 1 if you pull for a ...

Math

The standard form of a circle is Ax^2+Cy^2+Dx+Ey+F=0. Write the equation for the circle: Center (1,2), point on the circle (-2,-1). Okay, I've always put circles in the form (x-h)^2+(y-k)^2=0. I got this: r^2=(x-1)^2+(y-2)^2 then I substitute the point to find the radius: r^2...

Chemistry

The following reaction represents the decomposition for water: 2H2O - 2H + O How many molecules of hydrogen are produced from the decomposition of 12.2 grams of water into its elements?

Chem B

What mass of acetylene, C2H2, will be produced for the reaction of 90.g of calcium carbide, CaC2, with water in the following reacion? CaC2(s) + 2H20(l) ---> C2H2(g) + Ca(OH)2(s)

Chemistry

Given the following reaction: HCl(g) + SrO(s) ¨ SrCl2(s) + H2O Calculate the mass of HCl in grams that would react with 11.44 kg SrO.

Chemistry

Given the following two step reaction: 4 P + 5 O2 -> P4O10 P4O10 + 6 H2O -> 4H3PO4 If you have 8.28 g of P, 15.65 g of O2, and 19.95 g of H2O, how many grams of H3PO4 can be produced?

Chemistry

In the following reaction, how many liters of oxygen will react with 124.5 liters of propane (C3H8), at STP? C3H8 + 5O2 = 3CO2 + 4H2O

Chemistry

At 25°C, Kp 1 10-31 for the following reaction: N2(g) + O2(g) 2 NO(g) Calculate the concentration of NO, in molecules/cm3, that can exist in equilibrium in air at 25°C. In air, PN2 = 0.8 atm and PO2 = 0.2 atm.

Chemistry

1.Write an equilibrium constant equation for the following reaction: 4NH3(g)+5O2(g)= 4NO(g)+6H2O(g) 2. What does the above [] mean in the above equation?

Chemistry

1.Write an equilibrium constant equation for the following reaction: 4NH3(g)+5O2(g)= 4NO(g)+6H2O(g) 2. What does the above [] mean in the above equation?

Chemistry

If 4.41 moles of C5H12 react with excess O2, how many moles of CO2 will be produced in the following combustion reaction? C5H12+8O2 --> 6H2O+5CO2

Chemistry

Calculate the enthalpy change, ∆H in kJ, for the reaction H2O(s) → H2(g) + 1/2O2(g) Use the following: A. –291.9 kJ B. +291.9 kJ C. –279.9 k D. +279.9 kJ D??

science

If 0.188 moles of zinc reacts with excess lead(IV) sulfate, how many grams of zinc sulfate would be produced in the following reaction?

science

If 0.188 moles of zinc reacts with excess lead(IV) sulfate, how many grams of zinc sulfate would be produced in the following reaction?

chemistry help ?!

Which of the following is an exothermic reaction? sugar dissolving in water <<my choice an explosion tea dissolving in water the cooling of an ice pack

Chemistry

What volume of N2O (s) will be generated if 3.13 g of NH4NO3 (s) decomposes at 1.00 atm and 50 degrees celsius, given the following decomposition reaction: NH4NO3 (s) --> N2O (g) + 2 H2) (l)?

Separation of Racemate- Chemistry Lab

Compare the relative reaction rates of 1-bromobutane, 2-bromopropane, and 2-bromomethylpropane under SN1 reaction conditions. Silver nitrate will be used to provide nitrate ion as the nucleophile to produce alkyl nitrates as products. 1) You have a choice of acetone or ethanol...

Gen Chem

Consider the following reaction, A <===> B in a 1.00L container. At 1.77°C, the molar concentrations of A and B, respectively, 5.838M and 3.945M. Suddenly, 8.744 moles of A are added to the system. What is the change in DG of the system. Give the answer in kJ?

Gen Chem

Consider the following reaction, A <===> B in a 1.00L container. At 1.77°C, the molar concentrations of A and B, respectively, 5.838M and 3.945M. Suddenly, 8.744 moles of A are added to the system. What is the change in DG of the system? Give the answer in kJ?

chemistry

If 11.53g hydrogen sulfide reacts with 3.97g oxygen gas in the following reaction: 2H2S + O2 + H2O which is the maximum mass of sulfur that can be produced? which is the limiting reactant ? which reactant is in excess ? by how many grams?

chem

How many grams of magnesium oxide are formed when 13.5 L of oxygen gas, measured at STP, completely reacts with magnesium metal according to the following reaction? i got .496 g but i know that like way off

Chemistry

Phosphoric acid reacts with magnesium hydroxide to produce magnesium phosphate and water via the following reaction:H3PO4 + Mg(OH)2 -----> Mg3(PO4)2 + H2O.Balance the equation, then enter the coefficients

Chemistry Help Please

Using standard thermodynamic data from Appendix L of your text, calculate the equilibrium constant at 298 K for the following chemical reaction: CO(g) + H2O(l) CO2(g) + H2(g). Show work please! Thank you!!!

Chemistry

Assume that you start with 2 mole(s) of magnesium metal, determine: The number of grams of MgO(s) that would be produced in the following reaction (enter your answer with 4 significant figures): Mg(s) + 1/2O2(g) → MgO(s)

chemistry

At 35°C, Kc = 1.6 X 10-5 M for the reaction 2NOCI(g) 2NO(g) + Cl2 (g)' Calculate the concentrations of all species at equilibrium for each of the following systems. Note any simplifying assumptions made in the calculations. 3.0 mol NO(g) and 1.0 mol ofCl2(g) in a 1.0 L flask

Chemistry

Which of the following changes would shift the reaction shown here to the right (product side)? 4HCl (g) + O2(g) < = > 2Cl2 (g) + 2 H2O (g) addition of Cl2*** decrease of pressure increase of pressure removal of O2

Chemistry

Which of the following changes would shift the reaction shown here to the right (product side)? 4HCl (g) + O2(g) < = > 2Cl2 (g) + 2 H2O (g) addition of Cl2*** decrease of pressure increase of pressure removal of O2

Chemistry

1. What is the reaction between copper(II) sulfate and barium hydroxide? 2. What is the reaction between thiocyanate and iron(III) nitrate? 3. What is created when hydrogen peroxide is heated? 4. What is produced when HCl and KMnO4 is mixed?

Chemistry

If the initial rate of reaction is observed to increase by a factor of nine when the concentration of a reactant is tripled, what is the order of reaction with respect to that reactant? a)0 b)1 c)2 d)3 e)5 I think it's c am i right? Explain in case i'm misreading the question.

Chemistry

2 NO + O2 --> 2 NO2 The reaction rate is increased five­fold when the temperature is  increased from 1400 K to 1500 K. What is the activation energy for the reaction?  I have no idea how to do this and would greatly appreciate some urgent help!

Chemistry

A reaction : A(aq)+B(aq) --> C(aq) has a standard free-energy change of –4.01 kJ/mol at 25 °C. What are the concentrations of A, B, and C at equilibrium if, at the beginning of the reaction, their concentrations are 0.30 M, 0.40 M, and 0 M, respectively? I used deltaG...

chemistry

By applying Le Châtelier’s principle to a reaction that has come to equilibrium, the reaction can be made to A. produce more reactants. B. run to completion. C. reach a new chemical equilibrium. D. All of the above Is the answer D?

science

Phosphoric acid is very important compound used to make fertilizers.PPhosphoric acid can be prepared in two ways: Reaction 1: P4 + 5O2 = P4O10. Reaction 2: P4O10 + 6H29 = 4H3PO4. Supposing we allow 272 g of phosphorus to react with excess oxygen which forms tetra phosphorus ...

chemistry

Consider the following equations. For each, decide whether it represents a chemical reaction or a physical change. a. SnCl4(aq) + 4H2O(l)  Sn(OH)4(s) + 4HCl(aq) b. 4K(s) + O2(g)  2K2O(s) c. NaCl(s)  Na+(aq) + Cl-(aq)

AP Chem

At a particular temperature, K = 1.00 102 for the following reaction. H2(g) + I2(g) 2 HI(g) In an experiment, 1.23 mol H2, 1.23 mol I2, and 1.23 mol HI are introduced into a 1.00 L container. Calculate the concentrations of all species when equilibrium is reached.

Chemistry

For the following reaction KClO4 → KCl + 2O2 Assign oxidation states to each element on each side of the equation. Reactant Product K Cl O Which element is oxidized? Which element is reduced?

Chemistry

Consider the following reaction, equilibrium concentrations, and equilibrium constant at a particular temperature. Determine the equilibrium concentration of SO2(g). 2SO2(g)+O2(g)=2SO3(g) Kc=1.7*10^8 [SO3]aq=0.0034 M [O2]aq=0.0018 M

Chemistry

Last week we drew Lewis dot structures of azide (N31-), a crucial component in automobile collision safety airbags. During an impact, a sensor ignites a detonator cap that sets off the following rapid reaction: 2NaN3(s) → 2Na(s) + 3N2(g) Part A What mass of sodium azide...

chemistry

6.Answer the following questions about BaC2O4 and its hydrate: A. calculate the mass percent of carbon in the hydrated form of the solid that has the fromula BaC2O4 * 3H2O

Algebra

Can some one tell me if I have done this right? Write an equation in standard form with only intergers for the following line. The line with slope 6/7, through (0,7) y=mx+b y=6/7x+7 -6/7 -6/7 -7*(6/7x+y)=7*-7 6-7y=49

chemistry

Propane is widely usid in liquid form as a fule for barbecue grills and camp stoves for 58.5g of propane, calculate the following quantities. The grams of carbon?

grammar

Underline the singular noun in each sentence, then write the plural form of the word you underlined. The sentence is the following. They are planning several projects for the year ahead.

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