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

77,997 results, page 77

chemistry

What is the chemical formula of the compound that forms between lithium (Li) and phosphorus (P)?

Chemistry

#26 The Ksp of lead(II) carbonate, PbCO3, is 7.40 × 10-14. Calculate the solubility of this compound in g/L.

Chemistry

#25 The Ksp of nickel(II) hydroxide, Ni(OH)2, is 5.84 × 10-16. Calculate the molar solubility of this compound.

Chemistry

How to predict the possible structures of a compound if the degree of unsaturation of it is in fraction?

organic chemistry

what is this compound, it has a mf of c6h12o i. imgur. com/gCgw0Hi. png

math

solve the compound inequality write the solution in interval notation 2u+4>-6 and 3u-6> -3

algebra

solve the compound inequality write the solution in interval notation 2u+4>-6 and 3u-6> -3 =

English

Are compound subjects two or more sentences combined with and, or, nor?

business math

What is the amount of compound interest for the investment in previous question

English

How do you use Treachery in a compound sentence using independent clauses.

applied algebra

$800 at 5 1/2% annual interest, compound semiannually, for 7 years

Chemistry

The Ksp of manganese (II) hydroxide, Mn(OH)2 is 2.00x10^-13. Calculate the solubility of this compound in g/L?

Chemistry

he Ksp of mercury(II) hydroxide, Hg(OH)2, is 3.60 × 10-26. Calculate the solubility of this compound in g/L. I came up with x=2.8*10^-13

compound interest

Anny invests $3500 at %6 compounded monthly for 1 year

science

Name the ionic compound form when a Magnesium reacts with chlorine?

Chemistry

Suggest why calcium compound produce a coloured flame but magnesium do not?

chem

What is the correct name of the compound that is incorrectly named 1-chloro-3-pentyne?

accounting

rigoberto invests 8,000 at 6% interest, compound semiannually for 1 year

AP Chemistry

The formula for rust can be represented by Fe2O3. How many moles of Fe are present in 24.6 g of the compound?

Chem

Rust formula is rep by Fe2O3 How many moles of Fe are present in 24.6 g of the compound

Chemistry

A compound contains 84% carbon and 10% hydrogen.find the emperical formula.

Chem

The smallest identifiable unit of a compound is a(n) which is made up of which are chemically combined

chemestry

a compound salt Xcl2 contains 203% chloride what is element x?

math

The compound interest on Rs.1,000 at 6% compounded semi-annually for 6 years is:

Chemisty

the Keq of Mg(OH)2 is 2(10^-11). calculate the concentration of Mg ions in a saturated solution of this compound

chemistry

The formula for rust can be represented by Fe2O3. How many moles of Fe are present in 27.6 g of the compound?

Chemistry

why are most elements on the periodic table found as compound in nature?

MATHEMATICS.

FIND THE COMPOUND INTEREST OF 1400 IN 4YEARS AT 3% PER ANNUM

PELAGIE

what is the time necessary for 99.9%of the atoms of a radioactive compound to be disintegrated? t½=5times.

Urgent Language Arts~!

10. In the following sentence, "Abraham Lincoln was a widely admired politician,” which statement is correct? (1 point) Add a hyphen between widely and admired. Add a hyphen between admired and politician. Add a hyphen between Lincoln and was. No hyphen is needed. 11. In ...

Chemistry

Deterioration of buildings, bridges, and other structures through the rusting of iron costs millions of dollars everyday. Although the actual process also requires water, a simplified equation (with rust shown as iron(III) oxide (Fe2O3) is: 4Fe(s)+3O2(g) --> 2Fe2O3(s) delta...

chemistry

A) 9.8g of an alcohol A completely reacts with an excess of sodium , and a gas is released. When the reaction ceases the volume of the gas is 1.6L measured at a temperature of 22ºc and under a pressure of 1 bar. a- What gas is released in this reaction, how can it be ...

Physics

The intensity of an earthquake wave passing through the Earth is measured to be 2.5×106 J/m^2 at a distance of 48 km from the source. What was its intensity when it passed a point only 2.0 km from the source? At what rate did energy pass through an area of 3.0 m^2 at 2.0 km?

Science

The intensity of an earthquake wave passing through the Earth is measured to be 1.5×10^6 J/m^2*s at a distance of 58km from the source. What was its intensity when it passed a point only 2.0 km from the source? At what rate did energy pass through an area of 3.0 m^2 at 2.0 km ?

algebra

Write the equation of the line perpendicular to the given line and passing through the given point: y=3x−2 through (3,4) this problem is really hard for me can you please show and tell how you got your answers thanks,:)

Biology Diffusion

This is what i read from wikipedia: "Dialysis tubing is not permeable to glucose." Is that true? Visking tubing (Dialysis tubing) DOES allow glucose molecules to pass through it right?? So what types of molecules can pass through visking tubing? Can someone tell me which of ...

Chemistry

What is the empirical formula for aluminium selenide? What is the common oxidation state of aluminum? Combine that information with the valency for selenium that you came up with in the previous question to come up with the formula for aluminum selenide. If your are being ...

dynamics of rigid bodies

7. A 1800 kg car drives up an inclined of 8% from rest at uniform acceleration to a velocity of 60 kph after traveling 75 m. Its wheels are 3 m apart with its center of gravity midway of the wheels and 500 mm from the ground. If all frictional force is assumed to act at the ...

Chemistry(Please check)

Which of the following four processes are accompanied by an increase in entropy? 1. I2 (s) -> I2 (g) 2. 2 I (g) -> I2 (g) 3. 2 NH3 (g) -> N2 (g) + 3 H2 (g) 4. Pb2+ (aq) + 2 OH – (aq) -> Pb(OH)2 (s) Answers: a. 1 & 2 b. 1 & 3 c. 3 & 4 d. 2 & 4 e. only 3 I am ...

physics

prove that when a plane mirror is rotated through any angle, the reflected ray is rotated through twice that angle.

geometry (check answer)

Determine whether the line through (0, 4) and (2, 0) and the line through (−2, 3) and (−4, 2) are parallel, perpendicular, or neither. neither?

biology

I need a general principle found to be consistent through the following systems so I can describe the beneficil aspect of it for each system: muscles, the circulatory system, the respiratory system, the kidneys, and digestion. I find something and then come up one system short.

physics

An industrial laser is used to burn a hole through a piece of metal. The average intensity of the light is S = 1.13 109 W/m2. What is the rms value of each of the following fields in the electromagnetic wave emitted by the laser? (a) electric field (b) magnetic field

math

1. determine which order pair is a solution of y = -5x + 10 A. (-15,5) **** B. (2,0) C. ( -1 , -5 ) D. (3, 25 ) 2.on which of the following lines does the point ( 7,1 ) lie? A. y-5x = 4 B. y=x -10 C. y = -4x +3 *** D. y + -x +8 3.find the slope of the line through ( -9 , -10...

chemistry

how do I write a balanced equation showing aqueous hydrogen carbonate, to give liquid water and carbon dioxide gas H2O(l) + CO2(g) ==>H2CO3(aq) to show the formation of dihydrogen carbonate (carbonic acid). To show the decomposition of H2CO3. H2CO3(aq) ==> H2O(l) + CO2(g)

CHEM

For the reaction shown, find the limiting reactant for each of the following initial amounts of reactants. 4Al(s) + 3O2(g) -> 2Al2O3(s) 4mol Al, 2.6mol O2? a) 4mol Al, b) 2.6mol O2. I seriously have no idea what they are asking! What do you do with the 4mol Al & 2.6mol O2...

health

what is the risk factor for the following situation? You and your friend go to a movie. After the show, your friend’s mom comes and they ask you if you need a ride, but you tell them that your mom was going to pick you up so they leave. You then check your cell phone and ...

chemistry

in the reaction between sodium and water, hydrogen gas is given off and sodium hydroxide is formed. The gas is collected and there is found to be 1.8 moles of hydrogen. a) what mass of sodium would have been used in the reaction?

Equilibrium Consentration

At a certain temperature, the reaction H2(g)+ Cl(g)=2HCl(g)has Kc = 5 x 10^8. If a reaction mixture at equilibrium contains 0.48 M of H2 and 0.23 M of Cl2, what is the concentration of HCl? I was wondering if I had to rearrange the equilibrium constant equation to work out the...

Chemistry 20

A student was experimentally checking the stoichiometry of a reaction. The student correctly predicted that the reaction should produce 1.82 g of al2(so4)3(s). When the student dried and weighed the al2(so4)3(s) produced, its mass was 1.94 g. The percent difference of the ...

AP Chemistry

Hey guys! I'm stuck on some study guide problems... (On the bottom of this, I put what answers make sense to me) A) A factor that affects the speed of heterogeneous reactions but not of homogeneous reactions is 1)nature of reactants 2)concentration of reactants 3)area of ...

socialstdies

Which of the following is not a right of a juvenile in custody? (1 point) the right to a trial*** the right to a jury of his or her peers the right against self-incrimination the right to an attorney 3. Which step of the juvenile justice process is similar to sentencing in ...

chem experiment:

You are required to design an experiment to test Hess's law using the combustion of ethanol. Write a brief design for this experiment. What I wrote as my answer: Hess’ Law: is the algebraic addition of chemical equations yields a net equation whose enthalpy of reaction is ...

chemistry

I cannot figure out how to work this stoichiometry problem with the given equation: Mg+2HCl-->MgCl2+H2 What volume of hydrogen is produced from the reaction of 50.0g of Mg and the equivalent of 75g of HCl What do you not understand about it? It is a limiting reagent problem...

cjs

Post your response to the following: What is your overall opinion on the community era of policing as opposed to past eras and their role in society? What aspects of the previous eras would be beneficial today? Should policing continue with the way it is going; be integrated ...

solar energy please help

In this section, we talked about combining a solar cell with a photoelectrode to form a photoelectrochemical device. Why do we add a solar cell in the system? a)Because the photoelectrode is not able to produce any voltage difference to drive the reaction b)Because the ...

physics

A car is moving at 25.0m/s on a straight highway lane. 10.0m in front of the car is a van that is travelling with the same speed. The van’s driver suddenly hits the brakes to avoid an obstruction, slowing down at a rate of 9.00m/s². The car’s driver reacts 0.85s later, ...

Physics

During a neighborhood baseball game in a vacant lot, a particularly wild hit sends a 148-g baseball crashing through the pane of a second-floor window in a nearby building. The ball strikes the glass at 10.1 m/s, shatters the glass as it passes through, and leaves the window ...

physics

During a neighborhood baseball game in a vacant lot, a particularly wild hit sends a 0.144-kg baseball crashing through the pane of a second-floor window in a nearby building. The ball strikes the glass at 14.9 m / s, shatters the glass as it passes through, and leaves the ...

math

Which of the following equations represents the equation for the line that is parallel to the given line and passes through the given point? y= 1/5 x - 10; (15, -16) A. y = -5x +19 B. y = 1/5x + 91/5 C. y = 1/5 x - 19 D. y = 5x - 19 I do know that to be parallel the slopes ...

math

The physical plant at the main campus of a large state university receives daily requests to replace florecent lightbulbs. The distribution of the number of daily requests is bell-shaped and has a mean of 58 and a standard deviation of 11. Using the Empirical Rule rule, what ...

college chemistry

The voltaic cell described by the balanced chemical reaction has a standard emf of 4.05 V. Calculate the equilibrium constant (Kc) for the reaction at 25 oC. Round your answer to 3 significant figures. F2(g) + Mn(s) → 2F-(aq) + Mn2+(aq) Mn2+/Mn -1.18 F2/F- +2.87 0 °C = ...

Chemistry

Consider the chemical reaction C + H2O -----> CO + H2 How many liters of hydrogen gas are formed From the complete reaction of 1.07 mol of C? Assume that the hydrogen gas is collected at a pressure of 1.0 atm and the temperature of 315K So I'm looking for volume and I have ...

ukm

The equilibrium constant (Kc) for the gas phase reaction 2 NH3 --> N2 + 3 H2 is 3 x 10-3 at some temperature. The reaction is started by placing a sample of ammonia in an empty one liter flask. When equilibrium is established there is 0.010 mole of N2 present. How much ...

biology

On a hot, summer day, what would most likely be the limiting factor, the light reaction, or the dark reaction (in terms of photosynthesis)? I don't necessarily need the question answered. Rather, I don't quite understand how limiting factors, light and dark reactions work.

Chemistry

Consider the reaction 2 SO2(g) + O2(g) in equilibrium with 2 SO3(g) . At 25°C delta H° = -197.78 kJ and delta S° = -187.95 J/K. Using this information, calculate the equilibrium constant for the reaction at -32°C. (R = 8.314 J/K) Enter your answer using TWO significant ...

Chemistry

A reaction requires 0.5 g of pure methyl oleate (density = 0.87g/mL) (MW = 310g/mol). How many mL of 70% pure methyl oleate are needed for the reaction. I don't exactly know how to start this off. I think what I'm supposed to do is multiply the 70% by the molecular weight and ...

Chemistry

Use the balanced equation to answer the following: 3AgNO3(aq) + FeCl3(aq)...Fe(NO3)3(aq) + 3AgCl(s) If 21.73g of FeCl3 is mixed with 48.97g of AgNO3 a) Which is the limiting reagent? b) How many grams of AgCl can be theoretically produced? c) If 15.97g of AgCl was collected, ...

Chemistry

Determine the direction of the following reaction from the relative strengths of acids and bases: H2S(aq) + C2H3O2-(aq) yields Hc2H3O2(aq) + HS-(aq) The book says this will favor the reactants. I'm confused...shouldn't this be neutral because both reactants and products have ...

chemistry

My teacher went over it really fast and now I'm just really confused about how to do my homework =( Calculate the cell potential for the following reaction as written at 25C, given that [Cr2+] = 0.821 M and [Ni2+] = 0.0190 M. Cr(s) + Ni2+ (aq) <==>Cr2+ (aq) + Ni(s) Thank...

Chemistry

a. Write and balance the equation for the reaction of calcium carbonate with hydrochloric acid, then answer the following questions. b. What mass of calcium carbonate is required to neutralize 83.5mL of 6.00M HCl? does the balanced equation have any significance in this ...

AP Chemistry

This is the question I am having trouble with: A voltaic cell consists of a strip of lead metal in a solution of Pb(NO3)2 in one beaker, and in the other beaker a platinum electrode is immersed in a NaCl solution, with Cl2 gas bubbled around the electrode. A salt bridge ...

AP Chem

the activation energy for the reaction H2+I2 >>2HI is 167kJ/mol, and deltaE for the reaction is +28kJ/mol. What is the activation energy for the decompistion of HI?

Chemistry

Ni2+(aq)+Mg(s)→Ni(s)+Mg2+(aq) Indicate the half-reaction occurring at Anode. Indicate the half-reaction occurring at Cathode.

nystce exam

Hi, my aunt is going to be taking the nystce exam for teaching assistance. She will be going for child abuse and school violence. She needs some help finding tips and things to prepare herself. There is a preparation guide on one of the websites I've been surfing but my ...

geometry

Create a wrapping paper design that includes at least four of the following constructions: a bisected angle a perpendicular line drawn from a point not on a line to a line a perpendicular line drawn through a given point on a given line a quadrilateral with at least one pair ...

English

Can you help me rephrase first part of the song "Parents just don't understand",please? Thank you very, very much in advance 1) Parents just don't understand that children are going to make mistakes. 2) The song says that once a mother took his child (the singer?) school ...

Organic Chemistry

Ooops sorry! Please rank the following compounds in DECREASING order of their reactivity toward the SN2 reaction with sodium ethoxide in ethanol. a. methyl chloride b. isopropylbromide c. t-butyliodide d. methyl iodide e. ethyl chloride I have an answer, I'm just not sure if ...

chemistry

3. A carbonate fusion was needed to free the Bi from a 0.6423-g sample of eulytite (2Bi2O3·3SiO2). The fused mass was dissolved in dilute acid, following which the Bi+3 was titrated with 27.36mL of 0.03369M NaH2PO4. The reaction is Bi+3 + H2PO4-  BiPO4(s) + 2H+. Calculate ...

chemistry

A particular reaction has an activation energy of 51.6 kJ/mol-rxn. How much faster is the reaction at 50 degrees C versus 25 degrees C? a. 2 times b. 5 times c. 3 times d. half as fast d. 20% as fast help

Math

Find the POI (point of intersection) for the following set of lines: y=4x-1 and y=3x+4 I know how to plot them on a graph, and find out the POI that way, but how can I find the POI through an equation?

Physics ASAP

Use the following numbers for this question. MEarth 5.98e+24 kg MJupiter 1.9e+27 kg MSun 2e+30 kg Earth-Sun distance 150000000000 m Jupiter-Sun distance 778000000000 m rE 6380000 m rJ 69000000 m G = 6.67e-11 Nm2kg-2 the acceleration due to gravity at the surface of Jupiter has...

Chem

2ClO2 + 2OH- --> ClO2- + H2O Experiment 1, M of [ClO2] = .060 M of [OH-] = .030 Rate of disappearance of ClO2 (M/s) = .0248 Experiment 2, M of [ClO2] = .020 M of [OH-] = .030 Rate of disappearance of ClO2 (M/s) = .00276 Experiment 3, M of [ClO2] = .020 M of [OH-] = .090 ...

chem!

Calculate the heat of reaction for the incomplete combustion of 67.0g propane producing carbon monoxide gas and water vapour. how would I go about and do this question? What are you studying? Do you know how to use the thermodynamic tables (delta Ho, etc). delta Hrxn = delta H...

chemistry

what are some the different types of chemical reactions that occur on a daily basis our lives? wouldnt there be many? eating, taking medications, would emotion be or cause chemical reaction? All of the above. Add breathing. Don't forget the cars we drive, the clothes we wear. ...

thermodynamics

A reaction has deltaHrxn=-127 kJ and delta S rxn=314 J/K. At what temperature is the change in entropy for the reaction equal to the change in entropy for the surroundings? so I made delta H-T delta S=0 plugged in values for S and H and solved for T. I got -404.5 degrees K. Is...

chemistry

A particular reaction has an activation energy of 51.6 kJ/mol-rxn. How much faster is the reaction at 50 degrees C versus 25 degrees C? a. 2 times b. 5 times c. 3 times d. half as fast d. 20% as fast think it has something to do with the Arrhenius equation but i have no idea ...

chem- i reallyneed help

Consider the following equations. N2H4(l) + O2(g) N2(g) + 2 H2O(l) ÄH = -622.2 kJ H2(g) + 1/2 O2(g) H2O(l) ÄH = -258.5 kJ H2(g) + O2(g) H2O2(l) ÄH = -187.8 kJ Use this information to calculate the enthalpy change for the reaction shown below. N2H4(l) + 2 H2O2(l) N2(g) + 4 ...

Chemistry 30

A mixture of 2.5 moles of H2O and 100 g of C are placed in a 50.0 L container and allowed to come to equilibrium in the following reaction: C(s) + H2O(g)  CO(g) + H2(g) The equilibrium concentration of hydrogen gas is found to be 0.040 M. What is the ...

Chem

A mixture of 2.5 moles of H2O and 100 g of C are placed in a 50.0 L container and allowed to come to equilibrium in the following reaction: C(s) + H2O(g)  CO(g) + H2(g) The equilibrium concentration of hydrogen gas is found to be 0.040 M. What is the ...

Chemistry 2

The equilibrium constant, Kc, for the following reaction is 1.54E-2 at 643 K. 2HI(g) H2(g) + I2(g) When a sufficiently large sample of HI(g) is introduced into an evacuated vessel at 643 K, the equilibrium concentration of I2(g) is found to be 0.351 M. Calculate the ...

Science

1. Which of the following is the correct definition of minerals? A) A naturally occurring, inorganic solid that has a crystal shape and definite chemical composition. B) A naturally occurring, inorganic solid that forms through crystallization of melted materials. C) A ...

us history

1. Using what you have learned about President George Washington, which of these government characteristics would George Washington support? Absolute power of the president Alliances with other nations Strong central government *** Powerful political parties 2. Read the ...

chemistry(please check)

Just made it a new post didn't what it to get overcrowning.I hope this will help us figure out now For questions #1 through #10, refer to the following equilibrium system, with a Kc of 1.23E-03: C3H6O (aq) + 2C2H6O(aq)----> C7H16O2 (aq) + 2H2O (l) 1. What is the equilibrium...

English

The following quote from “An Ancient Gesture” is an example of what literary element? “I thought, as I wiped my eyes on the corner of my apron: Penelope did this too. And more than once: you can’t keep weaving all day And undoing it all through the night;” A. ...

Supportive learning environment

We can assist children in developing secure attachment in childcare through all the following except A. showing genuine interest in each child. B. being warm and responsive. C. exposing children to many different providers. D. providing continuity of care. my answer is c.

Math

If the line through (x,1) and (0,y) is coincident with the line through (1,4) and (2,-3), find x and y.

Chemistry

The reaction of a metal ion, M^2+, with EDTA is given in the following equation: M^2+(aq) + Y^4-(aq) <==> MY^2-(aq) The EDTA was standardized with a 0.04 M Zn^2+ solution. 25.05 mL of EDTA solution was used to titrate the Zn^2+ solution. From this standardization, ...

Chemistry

the following acid—base neutralization reaction HNO3 (aq)+ KOH (aq) --KNO3(aq) + H2O (I) What is the molarity (M) of an HNO3 solution if 50.0ml is needed to react with 25.0ml of 0.150M KOH solution?

Chemistry

NaOH + HS0-+ Hp + NaS0 24 24 Which of the following is the number of moles of NaOH required to neutralize 1 mole of H2S04 in the equation above? (Note: The reaction is not balanced.) A. 0.5 moles B. 1 mole C. 1.5 moles D. 2 moles 1

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