a certain reaction has the following generaln form
74,460 results, page 24

Chemistry
Tungsten metal can be produced by the reaction of tungsten oxide powder (WO3) with hydrogen gas (H2) in a reactor heated to 800oC. The byproduct of the reaction is water vapor (H2O). The reactor is charged with 128.0 kg of WO3 and 41.0 kg of H2. Assume that the reaction goes ... 
Algebra
I know that standard form is Ax+By=C, but I'm not really sure how to do this problem. All help is welcome. Thanks in advance. Write an equation for each line: through (1,3) and parallel to y=2x+1 I know that the slop will be 2 because it is parallel. If m=2 then used the same... 
chemistry
For the system H2(g) + CO2(g) <> H2O(g) + CO(g) at equilibrium, the addition of H2(g) would cause (according to LeChatelier’s principle) 1. more H2O(g) and CO(g) to form. 2. only more CO2(g) to form. 3. only more H2O(g) to form. 4. no change in amounts of products ... 
AP Chemistry
Calculate the delta H rxn for the following reaction: CH4(g)+4Cl2(g)>CCl4(g)+4HCl Use the following reactions and given delta H's: 1) C(s)+2H2(g)>CH4(g) delta H= 74.6 kJ 2) C(s)+2Cl2(g)>CCl4(g) delta H= 95.7 kJ 3) H2(g)+Cl2(g)>2HCl(g) delta H= 184.6 kJ ... 
Psychology
For each of the following research questions, indicate the following: (1) the type of research that would best answer the question, 2) an appropriate sampling method, and 30 the best method of collecting the data. a) How do the minority groups at a certain university view the ... 
biochemistry
I am studying for a midterm. Do you know this answer? what reaction does LDH actually catalize and why is that reaction important? 
Chem II
A firstorder reaction is 35.5% complete in 4.90 minutes. The rate constant of the reaction is _____ 
chemistry
a first order reaction has a rate constant of 7.5 x 10^3/s. The time required for th reaction to be 60% complete is 
CHEM
For the reaction of HNO3 is this the reaction? Is the water liquid? 2HNO3(s)> 2NO2(g)+H2O(l)+ 1/2O2(g) 
Chemistry
Since decomposition is an endergonic reaction. Does this mean it's reverse reaction synthesis is exothermic? 
chemistry
WHAT WOULD HAPPEN TO THE REACTION THAT PRODUCES AMMONIA IF WATER IS PRESENT IN THE REACTION MIXTURE? 
chemistry
For the reaction HCO3 H+ + CO32, ΔG° = +59.0 kJ/mol at 298.15 K. Find the value of K for the reaction 
chemistry
alternative reaction for acrylic acid and analyzing reaction for finding gross profit 
biochemistry
The ΔG¡' of the reaction is 5.31 kJ ámolÐ1. Calculate the equilibrium constant for the reaction. (Assume a temperature of 25¡ C.) 
umuc
For the reaction HCONH2(g) NH3(g) + CO(g), Kc = 4.84 at 400 K. If ΔH° for this reaction is 29 kJ/mol, find Kc at 500 K. 
Chemistry
Explain, in terms of collision theory, how and why a reaction’s rate changes as the reaction progresses. 
chemistry
CH3COOH(aq) + NaOH(aq) → H2O(l) + NaCH3COO(aq)? Is this a double displacement reaction and a decomposition reaction? 
CHEMISTRY
Silver reacts with nitric acid to form nitrogen monoxide, silver nitrate and water. Calculate the volume of nitrogen monoxide gas (@STP) that can be produced from the reaction of 5.00g of silver? 
someone please chek my math!
a. An ellipse is formed by stretching the graph of x^2+ y^2=1 horizontally by a factor of 3 and vertically by a factor of 4. Determine the equation of the ellipse in standard form x^2/a^2+y^2/b^2=1 (x/3) ^2+ (y/4) ^2=1 x^2/9 + y^2/16 =1 so the equation is: x^2/9 + y^2/16 =1 b... 
Chemistry
Metallic aluminum reacts with MnO2 at elevated temperatures to form manganese metal and aluminum oxide. A mixture of the two reactants is 67.2% mole percent Al. Find the theoretical yield (in grams) of manganese from the reaction of 240 g of this mixture. 
chemistry
At temperatures above 930 ∘C, PbO reduces PbS to form metallic lead (Pb). The byproduct of the reaction is SO2. Calculate the amount of lead produced (in kg) when a reactor is charged with 207.0 kg of PbS and 310 kg of PbO. Please help!!! 
Chmistry
For the following reaction, 4.35 grams of hydrogen gas are allowed to react with with 10.3 grams of ethylene (C2H4). hydrogen (g) + ethylene (C2H4) (g) ethane (C2H6) (g) What is the maximum amount of ethane (C2H6) that can be formed? grams What is the FORMULA for the limiting ... 
Science
Which of the following happens when a lowmass star runs out of fuel? Choose all that apply. A. Its core becomes a white dwarf B. Its outer layers form a nebula, or vast cloud of gas and dust C. its outer layers expand, and the star becomes a red giant D. gas and dust in a ... 
chemistry
how do you solve this? The candy indistry converts sucrose (C11H22O11,table sugar),a crystalline material, to invert sugar, a hydrolzyed [rpdict tjat os 50:50 frutose and glucose. The hydrolysis occurs in water, quite slowly, at an elevated temperature of 55¨¬C. The reaction... 
chemistry
A reaction starts with 1.00 mol each of PCl3 and Cl2 in a 1.00L flask. When equilibrium is established at 250 degree Celsius in the reaction PCl3(g)+ Cl2(g)> PCl5(g), the amount of PCl5 present is 0.82 mol. What is Kc for this reaction? 
chemistry
disappearance of NO in ... Help!!!? The following data were collected for the rate of disappearance of NO in the reaction 2 NO(g) + O2(g) ¨ 2 NO2(g). Run: [NO](M) [O2](M) Initail Rate (M/s) 1 .0126 .0125 1.41 X 10^2 2 .0252 .0125 5.64 X 10^2 3 .0252 .0250 1.13 X 10^1 (a... 
college algebra
The following rational function describes blood concentration of a certain drug taken via IV over time: f(x)=x+1/x Find: a.the horizontal or oblique asymptote(s), if any, b.the vertical asymptote(s),if any, c. describe their possible meanings. 
resources and reference
Which of the following is true of the Internet A. It's an excellent means for filing information. B. It's always going to provide accurate information. C. It's a useful tool for conducting research. D. It's available only to certain employees. My answer is c 
Chemistry
Consider the reaction when aqueous solutions of silver(I) nitrate and manganese(II) chloride are combined. The net ionic equation for this reaction is? Consider the reaction when aqueous solutions of cobalt(II) sulfate and lead(II) nitrate are combined. The net ionic ... 
Chemistry
H2(g) + I2(g) 2 HI(g) The forward reaction above is exothermic. At equilibrium, what happens if I2 is removed from the reaction mixture at constant temperature and volume? The reaction absorbs energy. The reaction releases energy. [H2] increases. [H2] decreases. [H2] remains ... 
science
The primary source of energy in our solar sysem is from? a) fusion reaction on the sun b) fission reaction on the sun c) fission reaction on the earth d) fission and fusion in the galaxy e) fusion reactions in comets the answer i picked was a 
statistics
Give the probability in decimal form (correct to two decimal places). A calculator may be helpful. Last semester, a certain professor gave 35 As out of 259 grades. If one of the professor's students from last semester were selected randomly, what is the probability that ... 
math
Give the probability in decimal form (correct to two decimal places). A calculator may be helpful. Last semester, a certain professor gave 15 As out of 396 grades. If one of the professor's students from last semester were selected randomly, what is the probability that ... 
math 115
1. sabrina has the following math quiz scores. 19, 24, 25, 17, 13, & 18. find her mean score, to the nearest tenth if necessary.= 13 is this correct? 2. eleven applications for a certain position had the following ages. 32, 33 ,25, 36, 48, 51, 28, 23, 54, 52, 45. what was the ... 
Chmistry
For the following reaction, 4.35 grams of hydrogen gas are allowed to react with with 10.3 grams of ethylene (C2H4). hydrogen (g) + ethylene (C2H4) (g) ethane (C2H6) (g) What is the maximum amount of ethane (C2H6) that can be formed? grams What is the FORMULA for the limiting ... 
chemistry
A solution of PbI2 has [Pb2+] = 4.5 x 105 and [I] = 6.5 x 104. PbI2 has Ksp = 8.7 x 109. Write down the reaction that is taking place. Calculate Q. Is Q larger or smaller than the Ksp? Is the solution unsaturated, saturated, or supersaturated? Will a precipitate form in ... 
chemistry
A solution of PbI2 has [Pb2+] = 4.5 x 105 and [I] = 6.5 x 104. PbI2 has Ksp = 8.7 x 109. Write down the reaction that is taking place. Calculate Q. Is Q larger or smaller than the Ksp? Is the solution unsaturated, saturated, or supersaturated? Will a precipitate form in ... 
chemistry
A solution of PbI2 has [Pb2+] = 4.5 x 105 and [I] = 6.5 x 104. PbI2 has Ksp = 8.7 x 109. Write down the reaction that is taking place. Calculate Q. Is Q larger or smaller than the Ksp? Is the solution unsaturated, saturated, or supersaturated? Will a precipitate form in ... 
Chemistry
A solution of PbI2 has [Pb2+] = 4.5 x 105 and [I] = 6.5 x 104. PbI2 has Ksp = 8.7 x 109. Write down the reaction that is taking place. Calculate Q. Is Q larger or smaller than the Ksp? Is the solution unsaturated, saturated, or supersaturated? Will a precipitate form in ... 
Chemistry
What is Gibbs free energy? A. The energy lost as heat to the surrounding molecules B. The usable energy released or absorbed by a reaction C. The energy in the form of kinetic energy in a system D. The energy contained within the bonds of molecules 
Chemistry
What is Gibbs free energy? A. The energy lost as heat to the surrounding molecules B. The usable energy released or absorbed by a reaction C. The energy in the form of kinetic energy in a system D. The energy contained within the bonds of molecules 
chemistry
A chemical reaction in a bomb calorimeter evolves 3.86 kJ of energy in the form of heat. If the temperature of the bomb calorimeter increases by 4.17 K, what is the heat capacity of the calorimeter? 
Algebra
I need help solving the following. Perform the indicated operatioons and write them in standard form. (4  squareroot of 36)^2 
mathematics
find the general solution to the following differential equation dy/dx=(In(x))/(x^2)*y^1/2 (x>0,(y>0)give answer in implicit form. 
9th grade  Algebra???
how do i turn the following equations into standard form? 14x = 24 + 18y y = 9/2x  7/2 3y = 6 + 6x 20/3 = 5y + 5x y = 3/2x + 5 
pre algebra
solve the following system graphically. Check your solution. 3x+y=9 2y=x8 I know im supposed to put it in y=mx+b form but i don't know how to. 
Chemistry
Which of the following surfaces does a true monolayer always form on? A. silicon B. gold C. both D. neither 
math
Write the following statement in if  then form. David will sing provided Eric plays the piano. i don't get get this 
algebra 1
simplify the following fractions by rewriting them in factored form and finding all the "ones" you can....plis help.. 42/60, 16/80, 51/17, 7/33... 
Inter algebra
Simplify the following expression, and rewrite it in an equivalent form with positive exponents. (10x5)5 
Math
Simplify the following expression, and rewrite it in an equivalent form with positive exponents. 14xy / 42x^5y^8 
Math
Short answer: simplify the following expression,and rewrite it in an equivalent form with positive exponents. (9x^3)^3 
algebra
Can someone please help me? Thanks! simplify the following expression, and rewrite it in an equivalent form with positive exponents(4x^2)^2 
algebra
Simplify the following expression, and rewrite it in an equivalent form with positive exponents. 10x^3y^3  40x^3y^4 
math
simplify the following expression and rewrite it in an equivalent form with positive exponents 24x^3y^3/72x^5y^1 Thanks! 
college chem
How many moles of O are needed to combine with 0.223 mole of C to form the following compounds? CO CO2 
chemistry
Which of the following is a possible set of n, l, ml, and ms quantum numbers for the last electron added to form an As3+ ion? (a) 3, 1, 1, ½ (b) 4, 0, 0, ½ (c) 3, 2, 0, ½ (d) 4, 1, 1, ½ (e) 5, 0, 0, ½ 
algebra
simplify the following expression, and rewrite it on equivalent form with positive exponets. 16x7y4z  20x2z3 
chemistry
Which of the following solutions will not form a precipitate when added to 0.10M NaOH? a) 0.10 M MgBr2 b) 0.10 M NH4Br c) 0.10 M FeCL2 
chemistry
Which of the following solutions will not form a precipitate when added to 0.10M NaOH? a)0.10 M MgBr2 b) 0.10 M NH4Br c) 0.10 M FeCL2 
spanish
supply the form of ser that goes with the following subjects el, nosotros, yo I need a few examples for help 
math
(1).answer that correctly shows following vectors,given in component form, in standard position. (1). V=(5,2) (2). v=(3,4) (3).u=(16,8) v=(5,3) u+v= ? (#,#) (4).u=(10,5) 3u= ? 
math
Calculate the following and write your answer in the simplest form. Please show all your calculation. 4 2/61 2/12+2 1/4 
math
calculate the following, leaving your answer either as a fraction (lowest) or in decimal form Add: 3/8 + 1/2 + 3/4+= 
math
calculate the following, leaving your answer either as a fraction (lowest) or in decimal form Subtract: 3/4  3/8 = 
math
calculate the following, leaving your answer either as a fraction (lowest) or in decimal form Multiply: (2/3) (3/5) = 
math
calculate the following, leaving your answer either as a fraction (lowest) or in decimal form Divide: 3/4 ÷ 3 = 
math
Calculate the following, leaving your answer as a fraction (lowest) or in decimal form. Show work. a) 2(5+3+2)  2(2+3) 
math
Calculate the following, leaving your answer as a fraction (lowest) or in decimal form. Show work. b) 3(12+2+1)  = 3(4 + 1) 
math
Calculate the following, leaving your answer as a fraction (lowest) or in decimal form. Show work. 8(2+3)²  2(5)² 
Quick math help
Write an equation in point slope form using the following points: (3,2) and (5,1) Please help me! Thank you! 
College Algebra
Write the following in a+bi form (5i)/(33i) 5/3 and 1/3i (5/2i)/(1/5i) 23 and 0i (2i)^3 2 and 0 Im having trouble with these probems and here is my answers. PLEASE HELP 
Math Help!!!
Use cross products to determine which of the following pairs of ratios cannot form a proportion. A. 1/3*3/9 B. 2/3*4/9 C. 2/3*4/6 D. 1/3*2/6 Is the answer B? 
Calculus
With the following coordinates (16,46) (18,64) (20,60) create three formulas using Y+Ax^2+Bx+C then solve for A,B, and C to form the final equation. 
Algebra 2
Find the vertex of each of the following parabolas by averaging the x intercept. Then write each equation in graphing form. Y=(x3)(x11) 
english
20. Which of the following singular nouns does not form an irregular plural? (my sec) A. mouse B. tooth C. ox ** D. tree 
Mathematics
Given the following equation in general and intercept form y=3x3.find the inclination of line containing p1(1,5)and p2(7,7) 
Science Help!!!!
1. Which of the following types of pollution cannotbe attributed to car and truck emissions? A. Acid rain B. Sedimentation C. Ozone D. Photochemical smog 2. In which of the following places is it more difficult to determine if there is pollution? A. Aquifer B. Stream C. Air D... 
SCIENCE
I mix 300.0ml of the barium nitrate solution from 1c with 100ml of a 1.50M lithium phosphate solution. The reaction produces solid barium phosphate a. Write a balanced equation for the reaction. b. Which is my limiting reagent? c. How much barium phosphate may be produced in ... 
Chemistry
Reaction: C6H11OH(l) ==> C6H10(l) + H2O(l) Calculate the mass of cyclohexanol (C6H11OH) needed to produce 45.0g cyclohexene (C6H10) by reaction if the reaction has a 86.2% yield and the cyclohexanol is 92.3% pure. Usually this problem would be fairly easy, but the purity is... 
language arts
directions: decide which form of the verb given in parenthases is needed write the correct form on the line identify the form you used by writing present,past,or past participle. sentance one: have you (speak)to anyone about your vacation plans? if you can please help me i don... 
chemistry
A reaction rate increases by 60.3% when the temperature is increased from 21.5 to 35.6°C. Calculate the activation energy (in kJ/mol) for the reaction. 
chem
Which reaction has been chosen as the 'standard' against which every other reaction is measured? A. Li+ + e– > Li B. F2 + 2e– > 2F– C. 2H+ + 2e– > H2 D. O2 + 4H+ + 4e– ==> 2H2O E. H2 + 2e– ==> 2H 
chemistry
what do you observe in the displacement reaction of zinc and lead nitrate? also, what is the symbol equation for this reaction? 
chemical
how to obtain the kinetic data for this reaction 2NO3+2H2>2H2O+N2 HOW TO PERFORM THIS REACTION IN LAB. 
CH102
If a temperature increase from 18.0 to 34.0 triples the rate constant for a reaction, what is the value of the activation barrier for the reaction? 
Chem12
Calculate Kp for the reaction N2(g) + 3 H2(g)> 2 NH3(g) given that the reaction has Kc = 438,880,639 at a temperature of 265. 
chemistry
state two ways of decresing the reaction rate of a gas phase chemical reaction. 
Chemistry
Please help me explain How a nuclear reaction differs from a normal chemical reaction and give examples. 
chemistry
what are the reaction steps of the reaction between ferric chloride with hydrogen at 600 degree celsius 
Chem
How do you determine the rate of reaction of a substance using stoichiometry and the average volume of the reaction on mixture? 
Chemistry
The rate constant for a secondorder reaction is 0.54 M1s1. What is the halflife of this reaction if the initial concentration is 0.27 M 
Chemistry
The reaction N2(g)+3H2(g)<>2NH3(g) begins with 1.15 M N2 and 1.36 M H2. At equilibrium the concentration of NH3 is 0.78 M. Determine the extent of reaction. 
chemistry
CO2 + 3H2 equilibrium CH4 + H2O what is the forward and reverse reaction for it? what are the units of Kc for this reaction? 
Chemistry
Balance the redox reaction below using the halfreaction method. Bi3+(aq) + Co(s)Bi(s) + Co2+(aq) 
Science at National University OF Samoa
2bromobutane heat with 2M NaOH. What is the observation and the chemical reaction for the reaction? 
BISE Larkana
KC for reaction is 55.0 at 700C calculate the equilibrium concentration of reaction and products when the initial consultation of h2 and i2 are 2.55 
Chemistry
Half reaction method of balancing redox reaction CHCl3 + MnO4 = Cl2 + CO2 + Mn+2 
Chemistry
Why would you subtract the heat of a calorimeter when calculating heat of the reaction? hint: the heat of the calorimeter is the amount of heat that the calorimeter absorbs from the solutioneach calorimeter will absorb a certain amount of heat, which means that the ... 
chemistry
I need the equilibrium constant for the following reaction @ 25 deg. C 2CaCO3 (calcite) + Mg2+ <==> CaMg(CO3)2 (dolomite) + Ca2+