# a certain reaction has the following generaln form

72,980 results, page 31

### Chemistry

Element M(a solid) reacts with an aqueous solution of compound B to form an aqueous solution of compound C(a salt) and a gas composed of element D. When 1.000g of element M is reacted with excess oxgen 1.658g of the compound MO are formed. Compound B is binary, monoprotic acid...

### Chemistry

Element M(a solid) reacts with an aqueous solution of compound B to form an aqueous solution of compound C(a salt) and a gas composed of element D. When 1.000g of element M is reacted with excess oxgen 1.658g of the compound MO are formed. Compound B is binary, monoprotic acid...

### Biochemistry

Amylase is secreted by your pancreas into your small intestine where amylase helps you digest the starches in your diet. Amylase does this because it is an enzyme, a protein that catalyzes a chemical reaction. In this case, amylase catalyzes the breakdown, or hydrolysis, of ...

### Algebra 2 Mannn

9x^2-y^2-72x+8y+119. how do i change this equation from general form to standard form.

### math

How do I add whole numbers to fractions. To get the number from an extended form to a standard form?

### math

how many numbers from 1 to 200 have an expanded form that is identical to a standard form? What are they? can you help me understand it?

### mathematics

the complex numbers 1,-1,iorta root3 form which type of triangle in graphical form

### medical terminologhy

combining form and suffix to form number 1 abnormal softining of a kidney

### Pre-Calculus

Have I converted correctly from standard form to vertex form? y = -3x^2 + 12x+1 = y = -3(x-2)^2 -13 Thanks

### linear algebra

Reduce the quadratic form Q(x)=x^2+y^2+z^2+2xy-4yz+6xz to diagonal form.

### Math

Convert equation from quadratic form to vertex form, y= a(x-h)^2 +k, by completing the square. y= -.25x^2+5.5x-5.25

### ap chem

an unknown gaseous hydrocarbon reacts with oxygen to form CO2 and H2O, DETERMINE HEAT OF FORMATION FOR THE HYDROCARBON. the density of the mixture of CO2 and H2O at 1 atm and 200 degree celsius is 0.751g /L and heat of reaction is equal to -2044.5 KJ /MOL hydrocarbon

### Algebra II

Right now we're doing systems of Linear Equations in Three Variables. It says to solve the following system: x - y + 3z = 4 x + 2y - z = -3 4x + 3y + 2z = -5 Whatever I try with this problem (and the others like it) it comes out wrong. I've had about one success. And Is there ...

### Math

An employee has a certain percentage of her paycheck put into a retirement fund. The table shows how y the amount withheld is based on x dollars earned Which of the following entries could be another line from this table? X Y 500 25 1500 75 1800 90 A.x 750 y 50 B.x 3300 y 150 ...

### Math

The total sales of a company in 2008 were $45,000. In 2011, it grew to $84,000. Use as the number of years since 2000 and as the total sales, and answer the following: a. What is the rate of change (slope) in the total sales? b. Write an equation in both point-slope form ...

### MATH 115

1. find the rate 635ft./5 seconds= 2. complete the statement 82cm = mm 3. complete the statement 15g = kg 4. sabrina has the following math quiz scores 19, 24, 25, 17, 13, 18. find her mean score, to the nearest tenth if necessary. 5. eleven applications for a certain position...

### chemistry

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? cus its not water right?

### Chemistry

How you do this? can you do the first one, i'll try the second one if you can explain Perform the following operations and give the answear in standard exponential form with the correct number of significant figures 1) 37.2mL + 18.0mL + 380mL= 2) 0.57cm x 0.86cm x 17.1cm= add ...

### chem

Gaseous iodine pentafluoride, IF5, can be prepared by the reaction of solid iodine and gaseous fluorine: • I2 (s) + 5F2 (g) → 2IF5 (g). • A 5.00 L flask is filled with 10.0 g I2 and excess F2 with the reaction proceeds to completion completely consumed. After the ...

### chemistry

An equilibrium mixture of SO2, O2, and SO3 at 1000 K contains the gases at the following concentrations: [SO2] = 3.77 10-3 mol/L, [O2] = 4.30 10-3 mol/L, and [SO3] = 4.13 10-3 mol/L. Calculate the equilibrium constant, K, for the following reaction. 2 SO2(g) + O2(g) 2 SO3(g)

### soc 120

Different ethical theories (Points : 1) can never offer useful information. must always contradict each other. can agree that certain acts are morally justified. always agree that certain acts are morally justified.

### English (EXTREMELY URGENT)

Please help he answer this one question. Which detail best describes why the author discusses the history of rap music. To show the extreme poverty of certain regions To explore the tension amongst certain cultural groups To expose events that are rarely discussed To give the ...

### Math radical form

Find the distance of the line segment whose endpoints are (5,7) and (-2,3) in simplest radical form. sqrt [(7-3)^2 + (5 -(-2))^2] = sqrt [16 + 49] = sqrt 65 That is the simplest form I can think of. sqrt means "square root of"

### science, chemistry

Lead metal is added to 0.150 M Cr3+(aq). Pb(s)+2Cr3+(aq)⇌Pb2+(aq)+2Cr2+(aq). KC=3.2×10−10 What is [Pb2+] when equilibrium is established in the reaction? What is [Cr2+] when equilibrium is established in the reaction? What is [Cr3+] when equilibrium is established in the ...

### 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 ...

### precalculus

please check my answers 1.Use Gaussian elimination to write the system of equations given below in row-echelon form. 2x+4y+z=-4 2x-4y+6z=13 4x-2y+z=6 answer:2x+4y+z=-4 8y-5z=-17 z=1 2.Find the solution to the system of equations given below. x+y+z=2 -x+3y+2z=8 4x+y=4 answer: 0...

### chem

For the reaction shown, find the limiting reactant for each of the following initial amounts of reactants. 4Al(s)+3O2 (g)-->2Al2O3 (s) 4 mol Al 2.6 mol O2

### Chemistry

Which one of the following combinations of reagents will result in a spontaneous reaction? A) Al(s) + CuCl2(aq) B) Al(s) + CaCl2(aq) C) Zn(s) + CaCl2(aq) D) Cu(s) + ZnCl2(aq) I know the answer is A, but what I don't know is why, or how to figure this out. Thanks!

### chemistry

Given: Cr3+(aq) + 3e¨C ￼ Cr(s); E¡ã = ¨C0.74 V Pb2+(aq) + 2e¨C ￼ Pb(s); E¡ã = ¨C0.13 V What is the standard cell potential for the following reaction? 2Cr(s) + 3Pb2+(aq) ¡ú 3Pb(s) + 2Cr3+(aq)

### chemistry

At 2200°C, K = 0.050 for the following reaction. N2(g) + O2(g) 2 NO(g) What is the partial pressure of NO in equilibrium with N2 and O2 that were placed in a flask at initial pressures of 0.75 atm and 0.30 atm, respectively?

### chemistry - grade 9

calculate the mass carbon monoxide, CO, that was needed to produce 78g of methanol, CH3OH, by the following reaction: 2H2 + CO -> CH3OH.

### chemistry

how much calcium oxide is recovered when 250 g calcium hydroxide are heated given the following reaction? Ca(OH)2 arrow CaO + H2O

### AP Chemistry

write the keq expression for the following reaction and determine the value of the Keq at 25degree celcius: MnO2(s)+4H+(aq)<-->Mn2+(aq)+2H2O(l)+Cl2(g)

### chemistry

complete and balance the following molecular equations and then write net ionic equations for each reaction. BaCl2(aq) + K2SO4(aq) KNO3(aq) + HCl(aq)

### Chemistry

Balance each of the following redox reactions and classify it as a combination, decomposition or displacement reaction. a) Mg(s)+H2O(g)->Mg(OH)2(s)+H2 b) Cr(NO3)(aq)+Al(s)->Al(NO3)(aq)+Cr(s) c) PF3(g)+F2(g)->PF5(g)

### Chemistry

What is the value of Kp for the reaction: NO2(g)+CO(g)->NO(g)+CO2(g) Given the following information: 2NO2(g)->NO3(g)+NO(g) Kp=2.72x10^(-4) 2NO2(g)+2CO2(g)->2NO3(g)+2CO(g) Kp=5.73

### chemistry

How many grams of 5.400 wt% aqueous HF are required to provide a 50% excess to react with 14.0 mL of 0.0236 M Th4+ by the following reaction? Th4+ + 4F - → ThF4 (s)

### Chemistry

At 2200°C, K = 0.050 for the following reaction. N2(g) + O2(g) 2 NO(g) What is the partial pressure of NO in equilibrium with N2 and O2 that were placed in a flask at initial pressures of 0.81 atm and 0.20 atm, respectively

### chemistry

How many grams of kmn04 are contained in 35ml of 0.05N kmn04 used in the following reaction in basic solution. the answer 0.0922g who helps

### chemistry

same question as before What is the Kc for the following reaction at equilibrium at 800∘C if [CO2]= 0.030M ? CaCO3(s)⇌CaO(s)+CO2(g)

### chem

Consider the following neutralisation reaction: 2 H3PO4(aq) + 3 Ca(OH)2 (aq) → Ca3(PO4)2 + 6 H2O Determine the volume of 0.75 M H3PO4 necessary to neutralise 35 ml of 0.45 M Ca(OH)2

### Chemistry

Calculate the value of the equilibrium constant for the following reaction based on the given concentrations of reactants and products. N2 = 1.5 M, H2 = 0.5 M, NH3 = 2 M N2 (g) + H2 (g) ↔ NH3 (g)

### Chemistry

Which atom has a change in oxidation number of –3 in the following redox reaction? K2Cr2O7 + H2O + S - - > KOH + Cr2O3 + SO2 Cr^+3 - - > Cr2O7^-2 Fe^+2 - - > Fe^+3 Fe^+3 - - > Fe^+2 Cr2O7^-2 - -> Cr^+3***

### Biochemistry UB Cameroon

If 8A pass for 2minutes at the cathode(where the following reaction takes place, Ag+ + e- --->Ag) how many grams of silver metal are passed onto the cathode??

### chem

Supply the missing atomic symbol to complete the equation for the following nuclear fission reaction. 1/0n +235/92U ------> 137/52 Te +?/?X + 2 1/0 n + energy also how do you decipher whether its 2 1/0n rather than 3?

### ap

Which of the following is best described as an acid-base reaction? 1. NaCl + AgNO3 !NaNO3 + AgCl 2. NH3 + H2O ! NH+ 4 + OH− 3. 2HgO ! 2 Hg + O2 4. Ca + 2H2O ! Ca(OH)2 + H2 5. KCl + NH4NO3 ! KNO3 + NH4Cl

### another A.P Chemistry Question

A different rigid 5.00L cylinder contains 0.176mol of NO(g) at 298 k. A 0.176mol sample of 02(g) is added to the cylinder, where a reaction occurs to produce NO2(g) (d) write the balanced equation for the reaction. (e) calculate the total pressure, in atm, in the cylinder at ...

### chemistry

A total of 2.00 \rm mol of a compound is allowed to react with water in a foam coffee cup and the reaction produces 115 g of solution. The reaction caused the temperature of the solution to rise from 21.0 to 24.7 ^\circ \rm C. What is the enthalpy of this reaction? Assume that...

### Chemistry

The decomposition of ozone may occur through the two-step mechanism shown below: step 1 O3 ----> O2 + O step 2 O3 + O ---> 2O2 The oxygen atom is considered to be: a catalyst or reaction intermediate? How am I supposed to be able to tell the difference between the two? I...

### algebra

this is what they want and im confused can any one explain it Rewrite the following in simplified radical form. Assume that all variables represent positive real numbers

### EARTH SCIENCE

Which of the following is NOT considered a form of electromagnectic radiaction? a-radio waves b-gravity c gamma rayas d visible light e- x-rays I think is B

### bio

Which of the following is NOT true of amoebas? a. They reproduce by binary fusion. b. They move by pseudopodia. c. They have a definite shape. d. They form temporary food vacuoles.

### Math

Evaluate the following expression. (Note, I'm not sure how to write this in mathematical form)but the P is slightly raised above both numbers. 210 P 1 = ______

### Math @Reiny

Write the standard form equation for the following Ellipse. Use the information given below. Foci: (0,0) and (4,0) Major Axis of length 8

### Pre-calculus

Find the center radius and equation of a circle in standard form given the following conditions: 1. Tangent to 3x+2y=0 at the point (0,0) and passing through (1,-1) and (6,0)

### conditional sentence

1. If the sound system hadn't failed,last night's show would have been better a. this is a correct sentence using the 1st conditional form b. this is correct sentence using the 2nd conditional form C. this is a correct sentence using the 3rd conditional form answer A 2. They'...

### Soc

Different ethical theories: 1.can never offer useful information. 2. must always contradict each other. 3. can agree that certain acts are morally justified. 4. always agree that certain acts are morally justified.

### 4th grade English

Please check the following, thanks. First Syllable Accented Cancel Chamber Gather Tender Damage action Second Syllable Accented Frosty Mustang Convince Belief Behave Certain Remind Confuse Contain

### math

write each decimal in expanded form, in word form and as a fraction. 4.1967 3.504 0.6045

### Math

What is the standard form and expanded form of Five Thousand One Hundred Fifty Three?

### medical information management

you're the chairperson of the form committee. discuss the basic specifications for designing a form

### music

The form of the melody called the bar form is represented by A)AAB B)ABB C)ABA D)ABBA

### PreCal

express in form a+bi (1+2sqrt3)(2-3sqrt-3) so I came up with 2-3i sqrt3 + 4sqrt3 - 18i Is that solution a+bi form

### Math

How do you write 2.15 1/2 in expanded form. Our topic is transforming fractions in decimal form... but what is the fraction 1/2 doing there?

### Chemistry

For a gaseous reaction, standard conditions are 298 K and a partial pressure of 1 atm for all species. For the reaction 2NO(g) + O2(g) --> 2NO2(g) the standard change in Gibbs free energy is ΔG° = -69.0 kJ/mol. What is ΔG for this reaction at 298 K when the ...

### Math

place value what is standard form and what is expanded form

### 3rd grade math

what is standard form ? and What is expanded form ?

### Chemistry II

Calculate the enthalpy for the following reaction: 4 NH3 (g) + 5 O2 (g) into 4 NO (g) + 6 H2O (g). You may only use the following information: N2 (g) + O2 (g) into 2 NO (g); Delta Hf = 180.6 kJ N2 (g) + 3 H2 (g) into 2 NH3 (g); Delta Hf = -91.8 kJ 2 H2 (g) + O2 (g) into 2 H2O...

### math 115

1.eleven applications for a certain position had the following ages. 32, 33, 25, 36, 48, 51, 28, 23, 54, 52, 45. sort them out in ascending order. 23, 25, 32, 33, 36, 45, 48, 51, 54, I picked 33 for the middle number to get the median is it correct? 2.clay is building a pen ...

### chem

Is ammonium hydroxide a strong or weak base and how do you know that? Technically there is no such thing as ammonium hydroxide. NH3 gas (ammonia gas) dissolves easily in water and produces the NH4^+ and the OH^- from the reaction with water. It is a weak base because that ...

### chemistry

Complete and balance the chemical equation using compound formulas. Include the states. If there is no reaction, enter NR. Pb(NO3)2(aq) + NaI(aq) → sine Pb is not reactive, the reaction is NR. Am i correct?

### chemistry

the reaction of aluminum metal (Al) with oxygen (O2) forms Al2O3. What is a balanced equation for this redox reaction. What are two half reactions to show how many electrons are gained or lost by each species?

### chem need assistance

Write a balanced chemical reaction to show the reaction between ammonium and a chlorite? Is this correct? 2NH3 + CLO2 + H2O ⇒ NH4Cl + NH2O2

### chemistry

If the reaction Cl2 (g) + O3 (g) = Cl2O (g) + O2 (g) occurred in just two steps, what would be the overall order of the reaction be? a. 1 b. 2 c. 3 d. 4 e. not possible to determine from the information given i have absolutly no idea how to do this

### Physics

What is the gibbs free energy for the reaction a)temperature b)800 degrees celsius c)comment on whether the reactions are spontaneous or not (CHEMICAL REACTION) deltaH = -100kJ delta S= -200 J/K

### Complex number cartesian form

Hello everyone, Need a bit of help. (-2-2i)^5 I want to turn this into Cartesian form using the modulus. Into the form z^n=r^n(cos n0 +i sin n0) So far I have r=2sqrt(2) The angle ive worked out as pi/4 or 45 degrees (im not 100% confident here). Now im a bit unsure how I put ...

### Science-Chemistry

I did a lab on Elements and Compounds and I would be grateful if u could provide and tell me some information on my work. Lab --Investigation--Elements and compounds. Can an element be separated from a compound? Can an element form a compound? In this investigation, you will ...

### Chemistry

Identify the following chemical equations by type. 1. If an electric discharge produces 500 cm3 of ozone (O3), how many cm3 of oxygen (O2) are required? 3O2(g) ---> 2O3(g) 2. When 2.75 dm3 of O2 react with an excess of glucose (C6H12O2), according to the reaction below, ...

### 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 ...

### chem plzzz help

okay so im doing pre lab questions on reaction rates I have a chart labeled effects of varying concentration in reaction #1 flask A contains 7.50mL of .200 M KI , none of .20M KCI, 5.00 mL of .0050 M S2O3^2-, 1 drop of starch. Flask B contains 7.5mL of .100M S2O8^2- It says ...

### History

Which of the following is NOT something a geographer can explain to a historian? A.why people populated certain areas B.how people change their environment C.how the environment changes people D.why people like other people I know is D but i need accurate answer

### algebra

pliis the equivalent form indicated for each of the following fractions 7/9=?/45 and 11/5=?/35 pliis help meee

### Math

What is the complete factored form of the following polynomial? 15j^3+30j^2 A)5j(3j^2+6j) B)15(j^3+2j^2) C)5(3j^2+6j) D)15j^2(j+2)

### AP chemistry

which of the following aqueous solutions should not form a precipitate with aqueous ba(no3)2?

### math

Rewrite the following equation in the center-radius form of the equation of a circle. x2 - 2x + y2 + 2y - 2 = 0

### Algebra

Write the following in simplified form the 4th root of the 3rd root of a^12 b^36 c^14

### Math - ASAP Please

(Slope-Intercept Form) Which of the following lines has a slope of -1/2? A) x + 2y = 0 B) x - 2y = 0 C) -x + 2y = 0

### Chemistry

Calculate the ΔHrxn for the following reactions using the heats of formation given in the table at the end of this assignment: a)The complete combustion of methane, CH4, producing water as a liquid. b)The complete combustion of glucose, C6H12O6, producing water as a ...

### chem

a.) At equilibrium, the molar concentrations for reactants and products are found to be [I2] = 0.50 M,[Cl2] = 0.60 M, and [ICl] = 5.0 M. What is the equilibrium constant (Kc) for this reaction? b.) The concentration of I2 is increased to 1.5 M, disrupting equilibrium. ...

### CHEMESTRY

One of the few xenon compounds that form is cesium xenon heptafluoride (CsXeF7). How many moles of CsXeF7 can be produced from the reaction of 13.0 mol cesium fluoride with 14.0 mol xenon hexafluoride? CsF(s) + XeF6(s) --> CsXeF7(s)

### CHEMESTRY

One of the few xenon compounds that form is cesium xenon heptafluoride (CsXeF7). How many moles of CsXeF7 can be produced from the reaction of 13.0 mol cesium fluoride with 14.0 mol xenon hexafluoride? CsF(s) + XeF6(s) --> CsXeF7(s)

### Spanish

Can you double check if I followed the directions correctly this time too and the answers were correct. Give the correct form of the appropriate verb, saber or conocer, which would be used in writing the following sentences in Spanish.Be sure the verb is written in the correct...

### chemistry

What is the standard entropy of reaction, the standard entropy of reaction, in J/K, for the combustion reaction of ethylene described in the previous questions? The temperature is 298.15K. (Enter your answer as a signed number in scientific notation without units.) My answers ...

### Pre-Calc Help please?

The more you study for a certain exam, the better your performance on it. If you study for 10 hours, your score will be 65%. If you study for 20 hours, your score will be 95%.You can get as close as you want to a perfect score just by studying long enough. Assume your ...

### Spanish

Need help with this-- 'Write the time in sentence form (in spanish) for each of the following: 77. 1:15 78. 2:30 79. 4:45 80. 7:10 Thanks! -MC

### math

Form the composites of the following two functions. f(x)=x2 +7x--4 and g(x)=3x--12 5. (f g)(x) 6. (g g)(x) thanks!

### math

Which of the following below shows the expression below in simplest form? 2y^2 - 50/y - 5 Is it "C" A. 2(y-5) B. 2(x +50) C. 2(y+5) D. 2(y^2 +5)

### math

Write the following ratio in simplest form: 32 min : 36 min

### Chemistry

What if when I find my product, I get the same compound as I did in my reactant? For example, FeCl3 + HCl ->FeCl3 + HCl. Then something is wrong. In this case, FeCl3 and HCl usually don't react. In very concentrated solutions of HCl, the FeCl4^- or FeCl6^-3 ion can form. In...