What is the empirical of compound (X) going through the following decomposition reaction?

78,667 results, page 37

chemistry

Predict wheter or not the following reaction will be spontaneous, please explain Br2(l) + Cl2(l) + 29.3 kJ --> 2 BrCl(g)

chemistry

how many molecules of Xef6 are formed from 12.9L at 298K and 2.6atm according to the following reaction. assume excess is Xe

Chemistry Check

Which one of the following substances is the product of this combination reaction? Al(s) + I2(s) => ______ For this it would be AlI3 ?

chemistry

assuming the following reaction proceeds in the forward direction, what is oxidized and what is reduced? Cu2+ (aq) + Ca(s) --> Cu (s) + Ca2+ (aq)

chemistry

How many moles of ammonia gas can be produced from the reaction of 3.0L of N2 and 3.0L of H2 according to the following equation: N2(g) + 3H2(g)---> 2NH3(g)?

CHEMISTRY

how much energy would be released in the following reaction CH4 + 2O2--> CO2 + 2H2O

chemistry

what is the reaction with sodium hydroxide for the following metals: Al3+ Fe3+ Mn2+ Ni2+ Zn2+

Chemistry

Balance the following redox reaction in acidic solution: H3PO4 + HNO2--> N2O4 + H3PO3

Chemistry

Balance the following redox reaction in acidic solution: H3PO4 + HNO2--> N2O4 + H3PO3

Chemistry

Balance the following redox reaction in acidic solution: H3PO4 + HNO2--> N2O4 + H3PO3

Chemistry

In the following reaction, which substance is acting as the Brønsted-Lowry acid? NH3 + H2O NH4+ + OH

chemistry

write the net ionic equation of the following reaction: HCl(aq)+NaOH(aq)--> NaCl(aq)+H2O(l)

chemistry

When the following reaction is balanced in acid solution, the coefficient of H+(aq) will be: Cr2O72-(aq) + Sn2+(aq) --> Cr3+(aq) + Sn4+(aq)

Chemistry

The following reaction has a Delta G value of 42.6 kJ/mol at 25oC: HB(aq) +H2O(l) --> H3O+(aq) +B-(aq) Calculate Ka for the acid HB.

chemistry

Determine the entropy change for the following displacement reaction Cl2(g) + PbBr2(aq) --> PbCl2(aq) + Br2(l

Chemistry

need help balancing the following. redox reaction in acidic solution. Clo3-+Cl->>Cl2+ClO2

Chemistry

What is the reducing agent in the following reaction? 2NA + 2H2O 2NaOH + H2 A.Na B.H2O C.NaOH D.H2 I think it is B...?

Chemisty

Calculate the standard enthalpy change for the following reaction at 25 °C. MgCl2(s)+H2O(l)-->MgO(s)+2HCl

chemistry

Balance the following redox reaction by inserting the appropriate coefficients. H^+ +CrO4^2- +NO 2^- =Cr^3+ +H2O+NO3^-

Chemistry

Calculate the standard enthalpy change for the following reaction at 25 °C. MgCl2(s) + H2o(l) ---> MgO(s) + 2HCl(g)

Chemistry

Calculate the equilibrium constant for the following reaction at room temperature, 25 ∘C: N2(g)+O2(g)→2NO(g)

Chemistry

Calculate the standard enthalpy change for the following reaction at 25 °C.? 2CH3 OH(g) + 3O2(g) -------- 2CO2(g) + 4H2O (g)

Chemistry

2H2O(g)<-> 2H2(g) + o2 Calculate delta g and Kp for the following equilibrium reaction. Keep getting 7.2E-81 and the answer is 4.5E-81 Why?

Chemistry

For the following reaction, identify the substance being oxidized and reduced CH4 + 2 O2 = CO2 + 2 H2O

Chemistry

Write the net ionic equation for the following reaction : Na3SO4(aq) + Ba(NO3)2(aq) —> BaSO4 (s) + 2 NaNO3(aq)

Chemistry

If 2.5 g of element A combine with 5 g of element B to form compound AB how many grams of B are needed to form compound AB2? Which law did you use to answer this question ? My answer is 7.5 g. Im not sure if this is right. Please help this is due Thursday morning C an you ...

chemistry

name the following compounds and tell what type of compound they are (binary ionic. ternary ionic, or binary molecular) a)FeBr3 b)CBr4 c)Na2Cr2O7 still haven't gotten help yet and i posted a response to the question below

Math

I need to find the equation for the following (compound interest): number of years: 12 initial principal: 10000 annual interest rate: 0.03 additional investment each subsequent quarter: 500 The value in 12 years is 43074.4088874

Chemistry

True or false 1. The energy of a collision between atoms or molecules must be greater than the activation energy for bonds to be broken? 2. Decreasing the temperature decreases the kinetic energy of the reactant, and the reaction goes more slowly? 3. two or more atoms must ...

chem

---------- A compound has the formula Mg3X2. If 1.87 g of X combines with 4.86 g of magnesium, what is the atomic weight of X? A) 7.0 B) 14.0 C) 21.0 D) 28.0 E) 32.0 ---------- I'm having a really rough time with this one. It seems the total weight is 6.73 g, and that 27.79% ...

chemistry

A reaction proceeds by the following three-step mechanism with elementary rate coefficients, k. A + B → C k 1 C → A + B k -1 C → B + D k 2 (C is a chemical radical) (ii) By applying the Steady State Approximation determine the overall order of the reaction. (...

English

1.He delayed doing/to do his homework. 2.He suggested going/to go on a picnic. 3.He quit smoking/to smoke. 4.He avoided meeting/to meet the lady. 5.He proposed going abroad/to go abroad. (Which one is correct? Do we have to use only gerunds in the sentences above?)

Pls help me now

A 75g person on skis is going down a hill sloped at an angle 30.the coefficient of kinetic friction between the skis and the snow is 0.15.how fast is the skier going 10s after starting from rest?(answer=36m/s)

Chemistry

The decomposition of HI(g) is represented by the equation: 2HI(g) <-> H2(g) + I2(g) Kc= 64 at 25°C. If the equilibrium concentrations of H2 and I2 at 400°C are found to be [H2] = 5.4x10-4 M and [I2] = 8.8x10-3 M, what is the equilibrium concentration of HI?

Chemistry H

For the decomposition of aluminum oxide at 35 celsius and atm, what volume of oxygen gas will be produced if 2.77 grams of the oxide react?

Science

True or false? decomposition is an important part of only two of the three nutrient cycles I think it's true. Thanks

AP Chemistry

iN A LAB, the orders of two reactants, A and B, were determined experimnetally to be 2 and 3 respectively. a. write the rate law for this reaction. c. what would happen to the rate of the reaction if A were Doubled? d. what would happen to the rate of the reaction if B were ...

URGENT -- Chemistry

When 0.500 g of an unknown compound was dissolved in 15.0 g benzene, the freezing point depression was determined to be 0320C. The molar mass of the unknown compound is ?? g/mol. (The freezing point depression constant for benzene is 5.12C kgmol. I really don't know where to ...

Chemistry

ELement A has a valence electronic structure of ns2np1. Element B has the valence electronic structure of ns2np5. Write a formula for the compound that would be formed from elements A and B. Element A has three electrons to lose to make the last shell eight. Element B has 1 ...

Chemistry

Could someone explain the reasoning for this? 6) Which of the following is a false statement about ALL reactions in equilibrium? a) Increasing temperature shifts the reaction toward the products in an endothermic reaction b) Temperature effects on the equilibrium do not depend...

calculus

Hi, I am lost on couple of problems and i was wondering if you could just help me out with them. 1. Find and classify the points of discontinuity of the function F(x) = (x^2+7x+12)/(x^3-9x) now for this problem i know there is going to be an infinite discontinuity because of ...

Chemistry

Identify the following chemical equations by type. 1. If an electric discharge produces 800 cm3 of ozone (O3), how many cm3 of oxygen (O2) are required? 3O2(g) ---> 2O3(g) 2. When 75.0 dm3 of O2 react with an excess of glucose (C6H12O2), according to the reaction below, ...

Abnormal Psychology

The formal assignment of a clinical case to a DSM-IV-TR classification category is referred to as a/an _______ diagnosis. A. empirical C. proper B. taxonomic D. psychological

Math

If you roll a die 48 times and 8 of the rolls result in a "5," what empirical probability was observed for the event "5"? (Give your answer correct to three decimal places.)

Math

If you roll a die 48 times and 8 of the rolls result in a "5," what empirical probability was observed for the event "5"? (Give your answer correct to three decimal places.)

Math

If you roll a die 48 times and 8 of the rolls result in a "5," what empirical probability was observed for the event "5"? (Give your answer correct to three decimal places.)

Chemistry

Determine the empirical and molecular formulas for vanillin given that its molar mass is 152 g/mole and its composition is: 63.15% carbon, 5.30 % hydrogen and the rest oxygen

statistics

"suppose that IQ scores have a bell-shaped distribution with a mean of 97 and standard deviation of 17.Using empirical rule, what percentage of IQ score are less than 46?"

Statistics

Using the empirical rule, 95% of female heights should be between what two values? Either show work or explain how your answer was calculated

algebra

Find the slope of the line through the following pairs of points (-5,4)and (2,4)

math

which of the following is an equation of the line that passes through the point 95/3,-7) AND HAS A SLOPE OF 3/4

Math

find the slope of the line that goes through the following points (0,-4),(1,-3),(2,-2),(3,-1) a.) -1 b.)1 c.) -4 d.) -7

Statistic

Heights of men on a baseball team have a​ bell-shaped distribution with a mean of 169 cm169 cm and a standard deviation of 9 cm9 cm. Using the empirical​ rule, what is the approximate percentage of the men between the following​ values? a. ​% of the men are between 142...

More Algebra 2

It would be great if, again, someone would check these answers for accuracy. I'd like to know if I'm doing them right. 1) What equation defines an exponential decay function? a) y=x^pi b) y=pi^-x c) y=(1/pi)^-x d) y=pi times x I think the answer is c. 2) Suppose a lake is ...

Chemistry

Consider the titrtation of 25.0mL of 0.0100M Sn2+ by 0.0500M Ti3+ in 1 M HCL, using Pt and Saturated Calomel Electrodes to find the endpoint. F=96486.7 Cmol E0 Sn4+/Sn2+ =0.15V E0 TI3+/TI+ = 1.28 Esce = 0.241V R=8.3141 J K Mol (a) Write the balanced reaction. Sn4+ + 2e- <...

chemistry

Tantalum metal is produced by reaction of potassium heptafluorotantalate (K2TaF7) with elemental sodium (Na) in a reactor heated to 850oC. The by-products are potassium fluoride (KF) and sodium fluoride (NaF). The reactor is charged with 244.0 kg of K2TaF7 and 13.0 kg of Na. ...

chemistry/ electrochemistry

1. What is the value of the equilibrium constant for the reaction occurring in the cell shown below at 298 K? Ag(s) | Ag+(aq, 1 M) || Cu2+(aq, 1 M) | Cu(s) Report your answer to four significant figures in scientific notation (1.234E-3 or 1.234E3). Can anyone explain the steps...

Chem

The reaction through which carbon changes from graphite to diamond form is represented by the equation C(graphite) ---> C(diamond) delta H: ? Using the reactions below, determine the amount of heat absorbed in the change of one mole of graphite to one mole of diamond C(...

Chem

Which of the following pairs of elements are likely to form an ionic compound? lithium and chlorine sodium and potassium phosphorus and chlorine sodium and nitrogen argon and potassium

MATH HELP ASAP

For questions 1–4, find the slope of the following graphs. 1. a. 1/2 b. 2 c. 2 d. -1/2 2. a. 3/2 b. 1 c. -1 d. -3/2 3. a. 2/3 b. 3/2 c. 3 d. -2/3 4. a. 0 b. 1 c. -1 d. undefined For questions 5 and 6, find the slope of the line that goes through the following points. 5. x: 0...

Biology

Proteins are manufactured through the "blueprints" found on DNA. After they are translated, they are moved through a system of internal membranes before being distributed throughout the rest of the cell. At some point in the process, they are modified to their functional form...

Physics - Height of ball launch

A solid ball of mass m and radius r rolls without slipping through a loop of radius R, as shown in the figure. From what height h should the ball be launched in order to make it through the loop without falling off the track? (Use any variable or symbol stated above along with...

Chemistry

Nitrogen and hydrogen, with volumes of 12.0 L each, are injected into a sealed rigid reaction chamber containing a catalyst. The pressure of the chamber is 8.00 atmospheres and at a known temperature. The reaction is allowed to proceed to completion while being maintained at a...

chemistry

An endothermic reaction was found to have an activation energy of 100 kJ. If this reaction is reversed, the activation energy is only 20 kJ. What is the value of delta H for the endothermic reaction?

Chemistry

I need definitions for chemistry and I can't come up with any heterogeneous reaction homogeneous reaction activation energy activation energy activated complex elementary reaction

Physics!

A wheel rotates with a constant angular acceleration of 3.50 rad/s2. The angular speed of the wheel is 2.00 rad/s at t = 0. If the radius of the wheel is doubled, Are the following statements affected? If so, in what way? (Select all that apply.) (1)The angular speed at t = 2....

Math

Post a New QuestionCurrent Questions Homework Help: Math Posted by Mikil on Wednesday, September 23, 2015 at 6:50pm. Write a linear equation in slope intercept form for each of the following: A line perpendicular to y=x+2 that passes through the origin. A line perpendicular to...

cheMistry

a) Silver iodide(s) is formed by the following reaction: Ag (aq) + I (aq) --> AgI (s) The Ksp for AgI = 1.8 x 10^-10 Describe, using the chemical reaction, the mathematical formula for these ions. Assuming these ion concentrations are equal, what would the molarity be for ...

chem

a) Silver iodide(s) is formed by the following reaction: Ag (aq) + I (aq) --> AgI (s) The Ksp for AgI = 1.8 x 10^-10 Describe, using the chemical reaction, the mathematical formula for these ions. Assuming these ion concentrations are equal, what would the molarity be for ...

Chemistry

Given the thermochemical equation 2SO2 + O2 → 2SO3, ΔH°rxn = -198 kJ/mol, what is the standard enthalpy change for the decomposition of one mole of SO3?

Chemistry

At 25°C, K = 0.090 for the following reaction:H2O(g) + Cl2O(g) 2 HOCl(g) Calculate the concentrations of all species at equilibrium for each of the following cases. (a) 1.2 g H2O and 1.6 g Cl2O are mixed in a 1.4 L flask. (b) 1.2 mol pure HOCl is placed in a 1.9 L flask

Chemistry

The empirical formula of an oxide of nitrogen containg 30.4 per cent of nitrogen is NO

Chemistry

please HELP!! mass of magnesium chloride =.2 mass of chlorine in magnesium chloride =.1 A)moles of magnesium? B)moles of chlorine? C)moles of magnesium divided by the smaller number of moles? D)moles of chlorine divided by the smaller number of moles? E)experimental empirical ...

chem

A student carried out a simple distillastion on a compound known to boil at 124 C and reported an observed boiling point of 116-117 C. Gas chromatographic analysis of the product showed that the compound was pure, and a calibration of the thermometer indicated that it was ...

Chemistry

Part A Calculate the standard enthalpy change for the reaction 2A+B --->2C +2D Use the following data: Substance Delta H(kJ/mol) A -263 B -391 C +203 D -523 Express your answer in kilojoules. MY ANSWER FOR PART A: Delta H =277 kJ PART B----THIS ONE I NEED HELP ON Express ...

Chemistry

Part A Calculate the standard enthalpy change for the reaction 2A+B --->2C +2D Use the following data: Substance Delta H(kJ/mol) A -263 B -391 C +203 D -523 Express your answer in kilojoules. MY ANSWER FOR PART A: Delta H =277 kJ PART B----THIS ONE I NEED HELP ON Express ...

chemistry

An unknown compound contains only carbon, hydrogen, and oxygen (CxHxOx). Combustion of 3.50G of this compound produced 5.13G of carbon dioxide and 2.10G of water A.How many moles of carbon, , were in the original sample? b. How many moles of hydrogen, , were in the original ...

Chemistry

A compound of chlorine and fluorine, ClFn, reacts at about 75oC with uranium metal to produce uranium hexafluoride, UF6 and chlorine monofluoride, ClF (g). A quantity of uranium produced 3.53g UF6 and 343 mL ClF at 75oC and 2.50 atm. What is the formula (n) of the compound?

science, organic chemistry

Determine the amount of compound remaining in the aqueous phase and organic phase and organic phase if a 5.0g organic compound is dissolved in 100 mL of water and is extracted with three 50-mL portion of ether (kb= 10). Compare this with one 150 ml portion with ether. Which is...

Organic Chemistry

Identify the following compound from its IR and proton NMR spectra. C5H6O: IR: 3300 (sharp), 2102, 1634 cm–1 NMR: δ 3.10 (1H, d, J = 2 Hz); δ 3.79 (3H, s); δ 4.52 (1H, doublet of doublets, J = 6 Hz and 2 Hz); δ 6.38 (1H, d, J = 6 Hz)

Math Personal Finance

Assume we invest $2000 for one year in a savings account that pays an APR (Annual Percentage Rate) of 10% compounded quarterly. Calculate the interest and compound it by hand each quarter rather than using the compound interest formula. The total interest the account has ...

Chemistry

PLEASE PLEASE HELP How do i find the Empirical formula of CuCl2.5H2O

Chemistry please help

The reaction through which carbon changes from graphite to diamond form is represented by the equation C(graphite) ---> C(diamond) delta H: ? Using the reactions below, determine the amount of heat absorbed in the change of one mole of graphite to one mole of diamond C(...

Chemistry please help!

The reaction through which carbon changes from graphite to diamond form is represented by the equation C(graphite) ---> C(diamond) delta H: ? Using the reactions below, determine the amount of heat absorbed in the change of one mole of graphite to one mole of diamond C(...

physics

You're driving on the freeway going 90km per hour and it starts to rain. The raindrops make an angle of 40 degrees with the vertical when viewed through the driver's side window. What is the speed of the raindrops measured by someone at rest relative to the freeway? What is ...

Programming

Hello All i am new in dynamics Ax when i am going to connect the C# with Dynamics Ax using logon method i am getting the following error when connecting with DynAX from the it's own server so it connects but when i want to connect it from client computer where i use Windows 7 ...

chemistry

A particular kind of emergency breathing apparatus-often placed in mines, caves, or other places where oxygen might become depleted or where the air might become poisoned-works via the following chemical reaction: 4KO2(s)+2CO2(g)--> 2K2CO3(s)+3O2(g) Notice that the reaction...

chemistry

A particular kind of emergency breathing apparatus-often placed in mines, caves, or other places where oxygen might become depleted or where the air might become poisoned-works via the following chemical reaction: 4KO2(s)+2CO2(g)--> 2K2CO3(s)+3O2(g) Notice that the reaction...

physics

Why is the following situation impossible? Emily challenges David to catch a $1 bill as follows. She holds the bill vertically with the center of the bill between, but not touching David’s index finger and thumb. Without warning, Emily releases the bill. David catches the ...

Crt 205

I need some help with a few questions on my homework. 1)The Lakers almost didn't beat the Kings. They'll never get past Dallas. (Assume that in fact, the Lakers beat the Kings.) a. Valid. b. Sound. c. Inductive (strong). d. Inductive (weak). e. This is an explanation. 2)Since ...

English

1. Tomorrow, we're going to go to hike. 2. Tomorrow, we're going to go hiking. =================== Which one is grammatical? Are both grammatical? Then, what is the differencein meaning?

Chemistry

Full question: An alcohol of molecular formula C4H10O2 contains two OH groups and has an unbranched carbon atom chain. On reaction with excess hot potassium permanganate this alcohol is converted into a compound of molecular C4H6O4 To which carbon atoms in the chain of the ...

chemistry

Why is the molecular formula of a gas not necessarily the same as its empirical formula? answered above.

Chemistry

A sample of unknown ore was analyzed and fgound to contain 12.7% Al, 19.7% N,and 67.6% O. What is the empirical formula of this ore?

Chemistry

A 6.0g of methane decomposes into 4.5g of Carbon and 1.5g of Heydrogen. Determine the empirical formula of methane.

Chemistry

Complete combustion of 7.00 g of a hydrocarbon produced 21.4 g of CO2 and 10.2 g of H2O. What is the empirical formula for the hydrocarbon?

chemistry

Complete combustion of 4.80 g of a hydrocarbon produced 15.6 g of CO2 and 4.80 g of H2O. What is the empirical formula for the hydrocarbon?

chemistry

Complete combustion of 8.80 g of a hydrocarbon produced 27.1 g of CO2 and 12.5 g of H2O. What is the empirical formula for the hydrocarbon?

Statistics

What does the empirical rule say about the proportion of players who are between 62.7 inches and 75.3 inches? c.

Chemistry

When is the term, formula unit, useful? Is it when trying to figure out the empirical formula?

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