a certain reaction has the following generaln form
74,668 results, page 38

Chemistry
Magnesium metal reacts with HCl(aq) according to the equation: Mg(s) + 2 HCl(aq) → MgCl2(aq) + H2(g) In an experiment to determine the ΔH for this reaction, 0.158 g of Mg metal is combined with an excess of HCl to make 100.0 mL of solution in a coffee cup calorimeter. Upon ... 
전자재료
Uranium metal can be produced by the reaction of uranium tetrafluoride (UF4) with magnesium (Mg) in a sealed reactor heated to 700oC. The byproduct is magnesium fluoride (MgF2). To ensure that all the magnesium is consumed in the reaction, the reactor is charged with excess ... 
Chemistry
For the reaction described by the chemical equation: 3C2H2(g) > C6H6(l) .. Delta H rxn = 633.1 kJ/mol a) Calculate the value of Delta S rxn at 25.0 C... b) Calculate Delta G rxn... c) In which direction is the reaction, as written, spontaneous at 25 C and 1 bar pressure... 
Chemistry
Thanks to Dr. Bob for answering all these questions! I always do poorly on conceptual problems. Consider the following equilibrium system at 25°C and select the true statement below: H2PO4−(aq) + SO42−(aq) ↔ HSO4−(aq) + HPO42−(aq) ΔG°rxn > 0 at 25°C (1) this ... 
Math
The demand function for a certain brand of CD is given by the following equation where p is the wholesale unit price in dollars and x is the quantity demanded each week, measured in units of a thousand. P=0.01X^20.1X+6 Determine the consumers' surplus if the wholesale market... 
math
The demand function for a certain brand of CD is given by the following equation where p is the wholesale unit price in dollars and x is the quantity demanded each week, measured in units of a thousand. P=0.01X^20.1X+6 Determine the consumers' surplus if the wholesale market... 
math
The demand function for a certain brand of CD is given by the following equation where p is the wholesale unit price in dollars and x is the quantity demanded each week, measured in units of a thousand. P=0.01X^20.1X+6 Determine the consumers' surplus if the wholesale market... 
math
The demand function for a certain brand of CD is given by the following equation where p is the wholesale unit price in dollars and x is the quantity demanded each week, measured in units of a thousand. p=0.01x^20.1x+6 Determine the consumers' surplus if the wholesale market... 
math
The demand function for a certain brand of CD is given by the following equation where p is the wholesale unit price in dollars and x is the quantity demanded each week, measured in units of a thousand. p=0.01x^20.1x+6 Determine the consumers' surplus if the wholesale market... 
math
The demand function for a certain brand of CD is given by the following equation where p is the wholesale unit price in dollars and x is the quantity demanded each week, measured in units of a thousand. p=0.01x^20.1x+6 Determine the consumers' surplus if the wholesale market... 
math
The demand function for a certain brand of CD is given by the following equation where p is the wholesale unit price in dollars and x is the quantity demanded each week, measured in units of a thousand. p0.01x^20.1x+6 Determine the consumers' surplus if the wholesale market ... 
creative play
Which of the following is a true statement about brain research? A. Early social and emotional experiences are the seeds of human intelligence. B. Different regions of the brain are actively developing and maturing according to certain timetables. C. Children who don’t play ... 
Chemistry
Name four factors that can affect the rate of a chemical reaction. How does the rate of a chemical reaction change in response to a change in each factor? My answer: Four factors that can affect the rate of a chemical reaction are concentration, surface area, temperature, and ... 
Chem
I really appreciate the help you gave me earlier. I was wondering if you could please look over these questions for me to? The answers will always be either reactant, product or neither. 1)P4(s)+6 Cl2(g)<=>4 PCl3(l) Which side of the reaction will be favoured by an ... 
Chemistry
Consider the following reaction: H2O(l) + 3NO2(g) > 2HNO3(l) + NO(g) What volume of NO (in L) is produced starting from 1.80 g of water and 11.5 g of NO2 at 300 K and 1 atm? (use R = 0.0821 L atm/mol K). I am completely confused :( 
Science (Chemistry
Write the relationship between the rate of disapperance of H2C2O4 (aq) and the rate of apperance on Mn ^2+ (aq) for the reaction represented by the following equation. 2MnO4^(aq)+ 5H2C2O4 (aq)+6H3)^+(aq) >10CO2(g)+2Mn^2+ (aq)+14H2) (l) 
chemistry
In the following reaction, how many liters of oxygen produce 560 liters of carbon dioxide in the oxidation of methane, given that both gases are at STP? CH4 + 2O2 d CO2 + 2H2O 
Chem 1A
The following reaction occurs in aqueous acid solution: NO3– +I– →IO3– +NO2 In the balanced equation, using the smallest wholenumber coefficients, what is the coefficient of NO3–? 
chemistry
In the following reaction, how many liters of oxygen produce 560 liters of carbon dioxide in the oxidation of methane, given that both gases are at STP? CH4 + 2O2 ¨ CO2 + 2H2O 
science
Interpret Data. write the chemical equation for the following reaction: The elements sodium and chlorine combine to yield the compound sodium chloride. need help any help answer or a link idc 
Chemistry
Hi this question is on my study guide and I want to make sure I get to the right answer and know why. Explain why the following reaction goes to completion instead of to equilibrium. Mg(s) + 2HCL(aq) > MgCl2 (aq) + H2(g) (subscript 2 after MgCl2 and H2) 
Chemistry
Could someone please help me start this problem? The following reaction occurs 1.000 atmosphere & 298.0 K. CH3OH (l) + 3/2 O2 (g) → CO2 (g)+ 2H2O (l) 50.00 g of CH3OH, and excess oxygen. Calculate ΔU using ΔU = ΔH  PΔV 
Maths
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 ... 
Chemistry
The reaction 2NO (g) + 2H2 > N2 (g) + 2H2O (g) was found to follow the rate law, rate = k[NO]^2[H2]. By what factor will the rate of reaction increase when the pressure of NO gas is increased from 2.0 atm to 3.0 atm? Assume all other conditions are held constant. I'm ... 
algebra 2
Would some one look at these problems and see if I got them right Thanks Just let me if they are wrong so I can go back over them 1.Write in simplest form 48/56 A. 6/7 2.Multiply 8x^3/5 *10/x^3 A. 16/x^4 3.Divide 4/x^7 / 12/x^3 A. 1/3x^2 4. divide x^236y^2/5x^2+30y / (x^26xy... 
math,help
I also need help with this one: Add. Express answer in simplest form. ((8)/(s))+ ((8)/(s^2)) (8s + 8)/s^2 = 8(s+1)/s^2 That isn't much simpler than the original form, but sometimes they want single denominators. wouldn't it be : (8s+8)/s^2 
Vocabulary
The governor may have had an important message, but he delivered it rather ________. I am supposed to use a form of the word "prosaic." Is the missing form "prosaically"? 
Chemistry
calculate the minimum number of grams of C3H8(g) that must be combusted to provide the energy necessary to convert 3.36 kg of H2O from its solid form at 10.0°C to its liquid form at 80.0°C 
Chemistry
Write rate law expressions? 2NOCl(g) > 2NO(g) + Cl2(g) S2O3^2(aq) + H^+(aq) > HSO3^(aq) + S(s) (Sulfur initially forms a colloid solution so it can be treated as aqueous.) (1) Write the rate law expression for the above reactions, assuming these are elementary. (2... 
math
The demand function for a certain make of replacement cartridges for a water purifier is given by the following equation where p is the unit price in dollars and x is the quantity demanded each week, measured in units of a thousand. p=0.01x^20.3x+20 Determine the consumers' ... 
math
The demand function for a certain make of replacement cartridges for a water purifier is given by the following equation where p is the unit price in dollars and x is the quantity demanded each week, measured in units of a thousand. p=0.01x^20.3x+20 Determine the consumers' ... 
calculus
The demand function for a certain make of replacement cartridges for a water purifier is given by the following equation where p is the unit price in dollars and x is the quantity demanded each week, measured in units of a thousand. p=0.01x^20.3x+19 Determine the consumers' ... 
*math (1)
The demand function for a certain make of replacement cartridges for a water purifier is given by the following equation where p is the unit price in dollars and x is the quantity demanded each week, measured in units of a thousand. p = 0.01x^2  0.1 x + 47 Determine the ... 
!math (1)
The demand function for a certain make of replacement cartridges for a water purifier is given by the following equation where p is the unit price in dollars and x is the quantity demanded each week, measured in units of a thousand. p = 0.01x^2  0.1 x + 47 Determine the ... 
!math (1)
The demand function for a certain make of replacement cartridges for a water purifier is given by the following equation where p is the unit price in dollars and x is the quantity demanded each week, measured in units of a thousand. p = 0.01x^2  0.1 x + 47 Determine the ... 
cal
The demand function for a certain make of replacement cartridges for a water purifier is given by the following equation where p is the unit price in dollars and x is the quantity demanded each week, measured in units of a thousand. p = 0.01x^2  0.3x + 19 Determine the ... 
calc
The demand function for a certain make of replacement cartridges for a water purifier is given by the following equation where p is the unit price in dollars and x is the quantity demanded each week, measured in units of a thousand. p = 0.01x^2  0.3x + 19 Determine the ... 
math, algebra
how can i rewrite the following inequality in the form y = mx + b f(x) > x you can't change an inequality into an equality. were you thinking something like f(x) > 1x + 0 ?? no this is how its written in my homework that's why i am confused . 
Chemistry
Given the following equation: NH3 + NH3 +O2 ¨ NO + H2O Calculate the number of grams of ammonia needed to form 40.12 moles of nitrogen monoxide. 
calculus
Evaluate the following limits after identifying the indeterminate form. Use Hospital's rule. d) lim x_0+ (xe^(2x) + 1)^(5/x) e) lim x_(Pi/2)+ (1 + sec3x)^(cot3x) Thank you! 
Calculus 1
Evaluate the following limits after identifying the indeterminate form. Use Hospital's rule. d) lim x_0+ (xe^(2x) + 1)^(5/x) e) lim x_(Pi/2)+ (1 + sec3x)^(cot3x) Thank you! 
Quick math help
Use the following information to find y: m= 3 (5,2) and (6,y) Now write the point slope form of the equation using the completed point: Please help!! Thank you!! 
College Algebra
Write the following a+bi form i(3.143i) Please help. I believe that the answer is 3.14i3i, which would be (3.13*1)3*1. however this was incorrect please tell me where I went wrong 
CHEMISTRY
The heat evolved in the reaction of hydrobromic acid with potassium hydroxide was determined using a coffee coup calorimeter. The equation for the reaction is: HBr(aq) + KOH(aq) > KBr(aq) + H2O(l) When 25.0 mL of 1.00 M HBr at a temperature of 24.5oC was ... 
Chemistry
Dinitrogen tetroxide decomposes according to N2O4 (g) = 2NO2 (g) In a certain experiment, N2O4(g) at an initial pressure of 0.554 bar is introduced into an empty reaction container; after equilibrium is established, the total pressure is 0.770 bar. A quantity of NO2(g) is ... 
Physical science
Give one word or term of the following descriptions 1. A reaction that results in the formation of an insoluble salt 2.the process in which ions whithin an ionic substance are separated 3.the positive ion 4.a proton acceptor 
college chemistry
calculate the equilibrium constant for the following reaction at 298k given that DeltaGrxn=2.8kj/mol N2O42NO2 I thought to get K you use the expression K=e^(deltaG/(RT)) but I cant get the same answer my professor put down which is 3.1 
Thermochemistry
What volume of benzene (C6H6, d= 0.88g/ml, molar mass= 78.11g/mol) is required to produce 1.5x10^3 kJ of heat according to the following reaction? I just can't figure out what equation to use to solve this. Help, please? 
Chemistry
Consider the following reaction: 2NaCl(aq) + H2O(l) > Cl2(g) + H2(g) + 2NaOH(aq) A 10.0g sample of sodium chloride was placed in 10.0 g of water. If 3.85 g of Cl2 was obtained, what was the percent yield of Cl2? 
chemistry
Which one of the following is a combustion reaction? A. CH4 + 2 O2 CO2 + 2 H2O B. HBr + NaOH NaBr + H2O C. Xe (aq) + H2O(l) HXe(aq) + OH (aq) D. NaCl (aq) + AgNO3 (aq) NaNO3 (aq) + AgCl (s) 
Chem
What reaction(s) could happen if we left the same reaction mixture (from the conversion of dimethyl fumarate to dimethyl maleate) for 6 months in the absence of light? Use chemical eqns to explain your answer. 
college chemistry
The chemical reaction representing production of water gas is as follows: C(s)+H2O(l)=CO(g)+H2(g) calculate the enthalpy change in the production of 200L(at 500mmHg and 65degree celcius) of hydrogen by this reaction. 
Chemistry
Problem: In a first order decomposition reaction, 50% of a compound decomposes in 10.5 minutes. What is the rate constant of the reaction? The solution my professor gave says: k = .693 / 10.5min Where did the .693 come from? Thanks 
chemistry
Ammonia gas can be prepared by the reaction CaO(s) + 2NH4Cl(s) > 2NH3(g) + H2O(g) + CaCl2(s) If 112 g CaO reacts with 224 g NH4Cl, how many moles of reactants and products are there when the reaction is complete? 
chemistry
Ammonia gas can be prepared by the reaction CaO(s) + 2NH4Cl(s) > 2NH3(g) + H2O(g) + CaCl2(s) If 112 g CaO reacts with 224 g NH4Cl, how many moles of reactants and products are there when the reaction is complete? 
chemistry
Ammonia gas can be prepared by the reaction CaO(s) + 2NH4Cl(s) > 2NH3(g) + H2O(g) + CaCl2(s) If 112 g CaO reacts with 224 g NH4Cl, how many moles of reactants and products are there when the reaction is complete? 
chemistry
Ammonia gas can be prepared by the reaction CaO(s) + 2NH4Cl(s) > 2NH3(g) + H2O(g) + CaCl2(s) If 112 g CaO reacts with 224 g NH4Cl, how many moles of reactants and products are there when the reaction is complete? 
chemistry
Consider the combustion reaction: C3H8 (g) + 5 O2(g) > 3 CO2(g) + 4H2O(g), where triangle symbol H=  531 kcal/mol. If 6.70 x 10 to the 4th kcal of energy is released in the reaction, How many grams of oxygen were consumed 
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 noncompetetive 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 noncompetetive 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 solidliquid interface is 6.0cm² of surface area. If you sliced this cube (like a block of cheese) into 10 slices, and then replaced ... 
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... 
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
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 oxidationreduction 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... 
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
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 ... 
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 1octene 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 1octanol? 
Chemistry
The given reaction, 2N2O5 4NO2 + O2, follows firstorder kinetics and has an activation energy of 103 kJ mol1. At 298 K, k = 0.0000354 s1. What is the halflife (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 
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... 
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
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 ... 
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
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 
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 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... 
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. 
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 βlactoglobin 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)