a certain reaction has the following generaln form
74,460 results, page 27
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Chemistry
Phosphorous trichloride (PCl3) is produced from the reaction of white phosphorous (P4) and chlorine: P4(s) + 6Cl2(g) --> 4 PCl3(g) . A sample of PCl3 of mass 280.7 g was collected from the reaction of 70.86 g of P4 with excess chlorine. What is the percentage yield of the ... -
Chemistry 2
An industrial chemical reaction has a rate law: rate = k [C]. The activation energy for the reaction is 3.0000 x 10^4 J/mol and A = 2.000 x 10^-3. What must be the reaction temperature if a rate of 1.000 x 10^-9 M/s is required and [C] must be kept at 0.03000M. Hint: What must... -
LA
In the poems Concrete Cat, Limerick and Haiku chose different forms to express their thoughts and feelings about the subject. Imagine that their poetic forms changed how would each poem be different if its form was exchanged with another form write a paragraph discussing how ... -
goverment help
Which of the following is not a minor party in the history of the United States? Know-Nothing Free Soil Labour Socialist Which of the following is the most common party system in the world today? a group of people seeking to advance their ideas an independent agency pushing ... -
Chemistry Rate Reaction
What is the rate of the reaction: H2SeO3 + 6I- + 4H+ Se + 2I3- + 3H2O given that the rate law for the reaction at 0°C is rate = (5.0 × 10^5 L5mol-5s-1)[H2SeO3][I-]^3[H+]^2 The reactant concentrations are [H2SeO3] = 1.5 × 10^-2 M, [I-] = 2.4 × 10^-3 M, [H+] = 1.5 × 10^-3 M. -
Chemistry
Use Lewis Symbols to show the reaction of atoms to form arsine, AsH3. Indicate bonding pairs in the Lewis formula of AsH3 are bonding and which are lone pairs. -
chemistry
Ammonia reacts with oxygen gas to form nitrogen monoxide and water. At constant temperture and pressure, how many of nitrogen monoxide can be made by the reaction of 800. ml of oxygen gas? -
CHEMISTRY
Write a balanced chemical equation for the reaction of solid vanadium(V)({\rm V}) oxide with hydrogen gas to form solid vanadium(III)({\rm III}) oxide and liquid water. -
chemistry quick help!
In the balanced double replacement reaction of calcium chloride CaCl2 and aluminum sulfate Al2(SO4)3, how many grams of calcium sulfate can be produced if you start the reaction with 4.19 grams of calcium chloride and the reaction goes to completion? -
Chem hwk
In the balanced double replacement reaction of calcium chloride CaCl2 and aluminum sulfate Al2(SO4)3, how many grams of calcium sulfate can be produced if you start the reaction with 18.97 grams of calcium chloride and the reaction goes to completion? -
Hard Math
Why are these poor models for a parabola, Where a ball starts a a certain point and then is hit to reach a maximum height (vertex) and then lands at a certain point i. y = -0.002x(x - 437.1) ii. y = -0.5x + 216x + 3 iii. y = -0.002x + 0.879x + 3.981 iv. y = -0.002x + 0.8732x... -
math
i don't understand standard form math and i have to questions what is nine hundredths in standard form and sixteen and six tenths in standard form? -
Chemistry
The following reaction can be used to determine the amount of calcium ion present in milk. Before the reaction below is carried out ca2+ is precipitated out of a sample of milk as CaC2O4(s). The CaC2O4(s) is then titrated with MnO4-. 2MnO4-(aq) + 5CaC2O4(s) + 16H+(aq) = 2Mn2+(... -
Chemistry
What is the value of the rate constant for a reaction in which 75.0 percent of the compound in a given sample decomposes in 80.0 min? Assume first order kinetics. Use the integrated rate law for a first order reaction. Remember at 75 percent reaction, 25 percent of the ... -
Chemistry
What is the value of the rate constant for a reaction in which 75.0 percent of the compound in a given sample decomposes in 80.0 min? Assume first order kinetics. Use the integrated rate law for a first order reaction. Remember at 75 percent reaction, 25 percent of the ... -
chem
In the reaction of hydrogen peroxide with iron (II) ion in acidic solution to form iron (III) ion and water, the oxidizing agent is____. Is it hydrogen peroxide? -
Chemistry
Aluminum sulfate reacts with calcium hydroxide (from lime) to form aluminum hydroxide and calcium sulfate. Write the balanced formula unit equation for the reaction. -
Anatomy
I have two question 1.In a dehydration synthesis reaction which of the following occurs a. hydrogen and oxygen are removed from the reactant b. water is added to the reactants c. water is broken down into hydrogen and oxygen d. both a and c I think it would definitely be a but... -
AP Chemistry, Chem, science
Can anyone please help me with this problem?? =/ The reaction between solid sodium and iron (III) oxide is one in a series of reactions that inflates an automobile airbag. If 100g of sodium and 100g of iron(III) oxide are used in this reaction, determine: a. the balanced ... -
chemistry
(a) (i) Draw the abbreviated structural formula, in truncated form, of the compound that would be produced from the reaction of one molecule of glycerol with one molecule each of A, B and C .Circle and name the new functional group(s) produced. What type of reaction is ... -
math
convert from polar form into rectangular form. type the equation in rectangular form (simplified): 1) rsecθ = 3 2) r=5/cosθ-2sinθ 3) r=5cscθ -
Chemistry
Three solutions are mixed together to form a single solution. One contains 0.2 mol Pb(CH3COO)2, the second contains 0.1 mol Na2S, and the third contains 0.1 mol CaCl2. Write the net ionic equations for the precipitation reaction or reactions that occur. -
Chemistry
Consider the following reaction: CO(g)+H2O(g)⇌CO2(g)+H2(g) Kp=0.0611 at 2000 K A reaction mixture initially contains a CO partial pressure of 1348torr and a H2O partial pressure of 1780torr at 2000 K. Calculate the equilibrium partial pressure of CO2. Calculate the ... -
math
It takes 28 minutes for a certain bacteria population to double. If there are 4,241,763 bacteria in this population at 1:00 p.m., which of the following is closest to the number of bacteria in millions at 4:30 pm on the same day? -
chemistry
Sodium nitrate reacts with copper (II) hydroxide. I know how to write it down: NaNo3+CuOH2----> NO REACTION The problem is that I don't understand why it's no reaction I know it's double replacement and we have to look at activity series of metal to figure out If we can ... -
Physics
Which one of the following will form a standing wave: (1) two waves of the same amplitude and speed moving in the same direction (2) two waves of the same amplitude and speed moving in the opposite directions, (3) any two traveling waves can form standing wave if they have ... -
chem
18.4 mg/L of toluene is in a groundwater plume. Compute how much of the following would be necessary for full mineralization of the toluene if each reaction were the only reaction responsible for accepting the electrons from toluene. You may ignore biomass growth. Express the ... -
Math
1. Write the following ratio in simplest form: 32 min:36 min 8:9 8:36 32:9 128:144 2. Marie saved $51. On Wednesday, she spent $8 of her savings. What ratio represents the portion of her total savings that she still has left? 43:8 8:51 43:51 59:51 3. The price of 8.4 ounces of... -
chem please help
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 Do not give me a website to ... -
math
A certain sum is deposited in a bank which gives compound intrest at certain rate. The intrest on the amount is rs.440. In the first 2 years and rs.728 in the first 3 years what is the rate of interest per annum. -
cutural diversity
Should United States government policy favor certain kinds of immigrants? Should [citizenship] preference be given to the neediest applicants? The most talented? The most oppressed? The richest? Should applications from certain countries be given priority -
Physics
Suppose under the certain conditions, the maximum force of friction that could act on a certain car was 3.35*10^3 N. The mass of the car is 857kg. What is the maximum possible centripetal acceleration of the car going around a bend? I know the equation for this is a=(4piR)/(T^... -
chemistry
The isomerization reaction H3CNC(g) <=> H3CCN(g) was found to be first order in H3CNC. At 600 K, the concentration of H3CNC is 75% of its original value after 205 s. (a) What is the rate constant for this isomerization reaction at 600 K? (b) At what time will 33% of the ... -
Chemistry
A chemical reaction occurring in a cylinder equipped with a movable piston produces 0.58 mol of a gaseous product. If the cylinder contained 0.11 mol of gas before the reaction and had an initial volume of 2.1 L, what was it's volume after the reaction. Am I doing this right ... -
Chemistry/Equilibrium calculations
At 1200 K, the approximate temperature of vehicle exhaust gases, Kp for the reaction 2CO2(g)-> <- 2CO(g)+ O2(g) is about 1 E-13. Assuming that the exhaust gas (total pressure 1 bar) contains 0.2% CO, 12% CO2 and 3% O2 by volume, is the system at equilibrium with respect ... -
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^o = 290.3 kJ/mol When this reaction is coupled to the conversion of graphite to carbon dioxide, it becomes spontaneous. What is the chemical ... -
Algebra
Please check all of my answers and tell me if they are right. 1. What is the simplified form of the following expression? 7m^2 + 6.5n – 4n + 2.5m^2 – n (1 point) A. 9.5m^2 + 1.5n*** B. 4.5m^2 + 1.5n C. 1.5m^2 – 4.2n D. 9.5m^2 – 1.5n 2. Simplify the ... -
chemistry... please help!
A mass of 11.6g of phosphoric acid was produced from the reaction of 10g of P4O10 with 12g of water. What was the percent yield for this reaction? -
chemistry
Explain why the rate of a simple chemical reaction such as NO(g)+1/2O2(g)=NO2(g) is likey to be most rapid at the beginning of the reaction. -
chemistry
consider the reaction in which 410g of Ca(NO3)2 react with just the right amount of lithium metal in a single replacement reaction ? -
Chemistry
The rate constant of a particular reaction is halved when the temperature is decreased from 323 K to 273 K. Calculate the activation energy for the reaction. -
Chemistry
Consider the reaction when aqueous solutions of manganese(II) sulfate and barium bromide are combined. The net ionic equation for this reaction is:??? -
chemistry
Represent this reaction with a balance chemical equation. Solid aluminium hydride is formed by a combination reaction of its two elements. -
chemistry
2 HI(g) H2(g) + I2(g) The reaction above has an initial concentration of 2.00 M HI. (No other species are initially present.) If 22.4% of the HI has reacted when equilibrium is established, calculate Kc for the reaction. -
chemistry
The reaction x products follows Ist order kinetics in 40 minutes the concetration of x changes from 0.1M to 0.025M then the rate of reaction when conc of x is 0.01 -
CHEMISTRY
We have this reaction : HCO3- + OH- => CO3^-2 + H2O Specify the conjugate pairs and , which direction the reaction equilibrium shift ? and How ( as a rule ) ? -
chemistry
Which term has the same numerical value for the forward reaction as it has for the reverse reaction, but with opposite sign? a. ^E ( delta E) b. Ea1 c. Ea’ d. Ea2 -
Science
If the concentration of AgCl drops from 1.000 M to 0.655 M in the first 30.0 s of the reaction, what is the average rate of reaction over this time interval? -
science
2KClO3 - 2KCl + 3O2 is formed ! now which kind of reaction is this ? and how can i say it is that particular reaction took place here? -
biology, molecular
Consider the following 45 base-pair (bp) DNA sequence: 1 10 20 30 40 | . | . | . | . | . 5’-CGCACCTGTGTTGATCACCTAGCCGATCCACGGTGGATCCAAGGC-3’ ||||||||||||||||||||||||||||||||||||||||||||| 3’-GCGTGGACACAACTAGTGGATCGGCTAGGTGCCACCTAGGTTCCG-5’ Tip: If you want to see a ... -
Anatomy
I'm posting this again today hoping someone can clarify this for me- I have two question 1.In a dehydration synthesis reaction which of the following occur- a. hydrogen and oxygen are removed from the reactant b. water is added to the reactants c. water is broken down into ... -
Business
10. Which statement is most accurate regarding reinforcement theory? A. Attainable goals lead to high levels of motivation under certain conditions. B. Perceptions of unfairness are viewed as punishments and reduce productivity. C. Management style is based on the extent to ... -
MATH
Need Answer to the Following Please: Using the 9 digits, 1, 2, 3, 4, 5, 6,7, 8 and 9 you can arrange four different digits to form a four-digit number that is NOT divisible by 7. The digits 1238 cannot be arranged to create a four-digit number that is divisible by 7. The ... -
chemistry
predict the identity of the precipitate that forms. calcium nitrate, Ca(NO3)2, and sodium chloride , NaCl why does the answer come out as no reaction? couldnt it form to be CaCl2 or NaNO3 i thought it had something to do with the fact that Na and NO3 are both soluble so they ... -
chemistry
Calculate ∆T for the reaction. Assume the initial temperature of both reactants is 25.0◦C. Calculate the volume of the reaction mixture. Calculate the mass of the reaction mixture. Assume the density of the mixture is 1.03 g mL^(-1). Calculate the heat transferred ... -
chemistry
Methane (CH4) is the main component of natural gas. It is burned for fuel in a combustion reaction. The unbalanced combustion reaction for methane is shown below. CH4 + O2 CO2 + H2O + heat When the reaction is balanced, how many carbon dioxide molecules are produced for every ... -
chemistry
A certain first order reaction has a rate constant of 5.68 x 10–3 s–1 at 139°C and a rate constant of 8.99 x 10–1 s–1 at a temperature of 215°C. Ea = 111 kJ mol– q1) What is the value of the rate constant at 275°C? q2) At what temperature does the rate ... -
chemistry
In the REDOX reaction in basic solution Zn-->Zn(OH)4+H2 I know that the first half reaction is 4H20+Zn-->Zn(OH)4 +4H+e but the second one is either 2e+2H2O--->H2+2OH (WHICH IS THE ANSWER GIVEN ON THE WORKSHEET) OR 2e+2H-->H2 I think both leads to the same answer= ... -
alegebra
1. What is the factored form of 4x 2 + 12x + 5? (1 point) (2x + 4)(2x + 3) (4x + 5)(x + 1) (2x + 1)(2x + 5) (4x + 1)(x + 5) 2. What is the factored form of 2x 2 + x – 3? (1 point) (2x + 3)(x – 1) (2x + 1)(x – 3) (2x – 3)(x + 1) (2x – 1)(x + 3) 3. The area of a ... -
chemisrty
Consider the reaction between sodium metal and chlorine gas to form sodium chloride (table salt). 2Na(s) + Cl2(g) 2NaCl(s) If 3.6 moles of chlorine react with sufficient sodium, how many grams of sodium chloride will be formed? -
chemisrty
I have no idea how to do this activity..can someone please help!? In this activity you will investigate how chemical reactions are limited by the amount of reactants present. You will be using paper clips to represent atoms. You can describe the quantities of reactants and ... -
chemistry
(1) How many grams of copper, cu are there in 2.55 mol of cu? (2) Determine the percent composition of each of the following (a) ethylalcohol CH3CH2OH. (b) vitamin C, ascorbic acid C6H8O6. (c) Coteine, C18H21NO3. (3) A 27.5g sample of a compound containing carbon and hydrogen ... -
General
I just have a question for the people who help the students. Do you guys pick certain people to answer or does it take more time to figure out or answer certain problems over others? Or does it just have to do with the fact that some tutors and volunteers only teach certain ... -
marketing
You have been hired as a marketing consultant to Johannesburg Burger Supply, Inc., and you wish to come up with a unit price for its hamburgers in order to maximize its weekly revenue. To make life as simple as possible, you assume that the demand equation for Johannesburg ... -
maths please help me
NOTE: before you answer this question, please be aware that there aren't meant to be any full stops after the '2' or the 'i=0'. Also the underscores '-' represent how the following number is meant to be a lower case number. The ^ represents root numbers. PLEASE HELP ME Expand ... -
chemistry
1) A Galvanic cell runs on the following reaction: Co (s) + Cu2+ (aq) → Co2+ (aq) + Cu (s) Draw a diagram for this Galvanic cell, labeling the electron flow, the anode and cathode, and the positive and negative sides of the Galvanic cell. 2) A Galvanic cell runs on the ... -
math
Find the standard form of the equation of the circle having the following properties: Center at the origin Containing the point (-4,1) -
Chemistry
Which of the following elements does not form bonds easily because it has a full outer shell? a. Aluminum b. Carbon c. Helium d. Calcium -
Chemistry
which of the following elements does not form bonds easily because it has a full outer shell? a. Aluminum b. Carbon c. Helium d. Calcium -
Chemistry
Which of the following elements does not form bonds easily because it has a full outer shell? A. Aluminum B. Carbon C. Helium D. Calcium -
Math
Simplify the following expression, and rewrite it in an equivalent form with positive exponents. 24x^3y^-3/72x^-5y^-1 My answer was going to be: 24/72*x^3/x^-5=y^=3/y^-1 -
Math
Simplify the following expression, and rewrite it in an equivalent form with positive exponents. -15x^4y/17x^2y7 A. -3x^2/y^6 B.3x^2/y^6 C.-3x^6y^8 D. 52x^2/y^6 -
math
what would the following equation be in vertex form. y=-9x squared+72x+81. I have tried for hours and i cannot figure it out -
chem
Which ionic compound is expected to form from combining the following pairs of elements? yttrium and oxygen i put YO but its wrong -
math
How do i solve algebraic methods in addition/ subtraction problems such as rewriting the following equations in standard form. 5x + 4 = -9y -
Calc
Find the derivative of the following function using the appropriate form of the Fundamental Theorem of Calculus. intergral s^2/(1+3s^4) ds from sqrtx to 1 F'(x)=? -
Algebra
Give the list of elements and write in the form with condition the following sets: the set of natural numbers that are multiples of 3 -
maths
Calculate the lengths of the straight lines joining the following pairs of points, leaving your answers in surd form: (a) A(1,-5), B(6,10); (b) A(4,-3), B(7,6). -
maths
Calculate the lengths of the straight lines joining the following pairs of points, leaving your answers in surd form: (a) A(4,-3), B(7,6). -
URGENT CHEM
Write a balanced equation for the following reduction-oxidation reaction. SO3(2-) + MnO4(-) --- SO4(2–) + Mn(2+) numbers in parenthesis means the charge -
chemistry
Which of the following compounds would result in an exchange reaction if mixed in an aqueous solution with (NH4)2S? a. SrCl2 b. Li2C2O4 c. CH3CO2Ag d. MnSO4 I don't know what to look for. -
Chemistry
When calcium oxelate is treated with an acidic solution of potassium permanganate, the following reaction occurs: CaC2O4(s) + MnO4-(aq) = Ca+2(aq) + CO2(g) + Mn+2(aq) Balance the equation. -
11th grade
If the volume of water produced during the reaction doubled, what would happen to the ratio of hydrogen to oxygen in the following equation: 2 H2+ O2 --> 2 H2O -
Chemistry
I need to know how to right a net ionic equation for the following chemical reaction: 5 H2C2O4 + 3 H2SO4 + 2 KMnO4 = K2SO4 + 2 MnSO4 + 8 H2O + 10 CO2 -
chem
IF a reation generally takes 40 seconds to occur at 45 degrees C, how long should the reaction take a t the following temperatures? A. 35C B. 55C C. 65C -
Chemistry
Identify the atom that increases in oxidation number in the following redox reaction. 2MnO2 + 2K2CO3 + O2 2KMnO4 + 2CO2 *A.) Mn B.) O C.) K D.) C Please show work Thank you. -
physical science
Help please. Aisha drops an antacid tablet in water and times how long it takes to dissolve. Which of the following will decrease the reaction rate? -
Chemistry
What happens if sodium acetate (CH3COONa) is added to the following reaction? CH3COOH H+ + CH3COO- a) [H+] increases b) [H+] decreases c) a precipitate is formed d) [H+] does not change -
english
Which one of the following is a correct example of the singular possessive case? A. king's rights B. audiences' reaction C. women's club D. who's job I think it's C. -
chemistry
What would Qc be if the volume of the container decreased by a factor of 1.774 for the following reaction? PH3(g) + BCl3(g) → PH3BCl3(s) KC = 534.8 at 353.0oC -
Science(chemistry)
Give one word/term for the following descriptions during this type of reaction,the appearance,colour or shape of a substance is changed -
chemistry
Use Hess's Law and a table of heats of formation to determine the enthalpy for the following reaction. 3SO2(g) + 3H2O(g) + 3/2O2(g) --->3H2SO4(l) ΔH = ? -
chemistry
Use Hess's Law and a table of heats of formation to determine the enthalpy for the following reaction. 3SO2(g) + 3H2O(g) + 3/2O2(g) --->3H2SO4(l) ΔH = ? -
Biology
Which one of the following reactions occurs in the cristae of the mitochondria? A. The prep reaction B. Glycolysis C. The electron transport chain D. The citric acid cycle B? -
chemistry
Could you please tell me the objective, theory and mechanism,result, precautions and applications of following experiment : reaction of 4-aminotoluene and o-vanillin(preparation of azomethine) -
chemistry
What mass of carbon dioxide can be produced from 4 moles of sodium bicarbonate according to the following unbalanced reaction, NaHCO3 --> Na2CO3 + CO2 + H2O? -
CHEM 1411
What mass of Gallium chloride is formed by the reaction of 2.6 L of a 1.44 M solution of HCl according to the following equation: 2Ga+ 6HCl= 2GaCl3+3H2 -
chem 1411
what mass of H2 is produced by the reaction of 118.5 mL of a 0.8775M solution of H3PO4 according to the following equation: 2Cr+2H3PO4= 3H2+2CrPO4 -
chemistry
Determine the order of reducing agents (strongest to weakest). A) Mn(s) > Zn(s) > Cr(s) > Fe(s) B) Fe(s) > Cr(s) > Zn(s) > Mn(s) C) Mn(s) > Fe(s) > Cr(s) > Zn(s) D) Zn(s) > Mn(s) > Cr(s) > Fe(s) I know the half reaction for the following: - ... -
Chemistry
Given the following reaction for photosynthesis, 6CO2 + 6H2O --> C6H12O6 + 6O2, how many liters of O2 can be produced from 100 g of water at standard temperature and pressure?