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

77,997 results, page 74

chemistry

The compound X4C3 contains 15.03% carbon. What is the chemical symbol for X ?

Math 116a

7X+4>-13 or 9x+4>-23 The solution of the compound inequality is ? I am totally lost!!!!!!!!

Math 116 A

7X+4>-13 or 9x+4>-23 The solution of the compound inequality is ? I am totally lost!!!!!!!!

chemestry

calculate the moles of compound in .540g of ammonium bromide

chemistry

The compound X4C3 contains 15.03% carbon. What is the chemical symbol for X ?

chemistry

Write a formula for the compound that forms from potassium and acetate.

Chemistry

What is the name of the compound PBr5 using the Stock system?

Math

Find the compound form of v, given the magnitude of ||v||=3 and v in the direction of 3i + 4j.

chemistry

Find the formula for the compound that contains 72.4% iron and 27.6% oxygen.

organic chemistry

how to filter when a compound recrystallize at zero degree

algebra2

solving compound inequality can someone please help I don't understand.

algebra

-8<=2x-4<2 solve the compound inequality can someone please expplain this?

Algebra2

Find the functional values f(-5), f(1), and f(3) for the compound function. 1. f(x)=|x-5| if x≤1 ; (1)/ (x+1) if x>1

Language Arts

Would the phrase "sooner than" be a compound preposition? Thanks...

Inorganic Chemistry

Name this compound: [Co(NH3)5Cl]Cl2

Algebra2

Find the functional values f(-5), f(1), and f(3) for the compound function. 1. f(x)= |x-5| if x≤1 ; (1)/(x+1) if x>1

Science

How do you prepare 500mL of a 2.5M solution of NaOH from the solid compound?

chem

Which compound has a higher boiling point and why? a. PF3 b. PF5

chemistry help plz

OH-OH-benzene ring-CH=CH-NH2 is anyone knows the name of this compound?

chemistry

Does anyone know what this compound is: C2H3ClBrF? I need a skeleton diagram. Many thanks Sue

Math

What should the n value be if I want to compound by the second? How about by the milisecond?

math

How many formula units of the compound are present in 5.7g of Epson salt?

algebra

Solve the compound inequality graph solution-2<2x-4<4 answers are 0<x<-2, 3<x<6, 1<x<4, 1<x<0

algebra

Solve the compound inequality graph solution 6x-4<-34 or3x+10>10

science

Calculate the mass percent composition of each element in each compound.

Chemistry

The Ksp of tin(II) hydroxide, Sn(OH)2, is 5.45 × 10-27. Calculate the solubility of this compound in g/L.

Chemistry

The Ksp of tin(II) hydroxide, Sn(OH)2, is 5.45 × 10-27. Calculate the solubility of this compound in g/L.

Chemistry

The Ksp of iron(II) hydroxide, Fe(OH)2, is 4.87 × 10-17. Calculate the solubility of this compound in g/L.

English

A sentence with a compound predicate A. may have a single subject

Grammar

Can we go to the movies later this evening compound or simple sentence

Holy redeemer

What is the compound interest on a $40,000 loan @ 16% for 3 years?

chemistry

what is the total number of atoms in the compound (NH4)3PO4?

Maths

Which is better, £3.500, 4 years at 6% simple or compound interest?

Chemistry

Identify the compound and classify its functional group in the image H H H H H H H-C-C-C-O-C-C-C-H H H H H H H

Chemistry

Gives isomeric compound of C3 H8 O woth IULAC names

Chemistry

what compound is the result of silver nitrate and potassium bromide

Chemistry

which compound shows small change in solubility from 0°C to 100°C?

Chemistry

The Ksp of manganese(II) hydroxide, Mn(OH)2, is 2.00 × 10-13. Calculate the solubility of this compound in g/L.

Math/Statistics

Last fall, a gardener planted 68 iris bulbs. She found that only 58 of the bulbs bloomed in the spring. Find the empirical probability that an iris bulb of this type will bloom. How many of the bulbs should she plant next fall if she would like at least 60 to bloom?

science

1. Name a Protist that has both plant and animal characteristics. 2. What compound is usually identified by the use of iodine? 3. What important gas is released during photosynthesis? 4. Contrast photosynthesis and respiration. 5. Is movement characteristic of plant or animal ...

Language arts(CHECK ANSWERS)

please check answers for my language arts. 1.which of the following sentences is punctuated correctly? A.i watched a movie with jane.(I PICK THIS) B.sasha,have you met tim? C.i thought you were going to be here at 6:00 celia. 2.which of the following sentences is punctuated ...

chemistry

Choose the correct variables that will create a linear plot for each reaction order. Reaction Order / Answer Zero/ a??? First /b??? Second /c??? a. [A] vs time b. ln [A] vs time c. l [A] vs time d. log [A] vs time e. [A] vs (time)^2

Science

In the following reaction, how many liters of oxygen will react with 270 liters of ethene (C2H4) at STP? C2H4(g) + 3O2(g) ---> 2CO2(g) + 2H2O(g) The volume of one mole of gas at STP is 22.4 liters.

chemistry question

What mass of propane (C3H8) is needed to produce 346 g carbon dioxide in the following reaction? C3H8(g) + 5O2(g) -> 3CO2(g) + 4H2O(g) A. 346 g C3H8 B. 115 g C3H8 C. 5075 g C3H8 D. 1.86 g C3H8

chemistry

What mass of propane (C3H8) is needed to produce 346g carbon dioxide in the following reaction? C3H8(g)+5O2(g)---> 3CO2(g) +4H2O(g) A. 115g C3H8 B. 1.86g C3H8 C. 5075g C3H8 D. 346g C3H8

Chemistry

For a particular isomer of C8H18, the following reaction produces 5099.5 kJ of heat per mole of C8H18(g) consumed, under standard conditions. What is the standard enthalpy of formation of this isomer of C8H18(g)?

Chem

Hi! I need help with this problem, also I was wondering what kind of problem is this... limiting reactant?calculate the mass of hydrogen cyanide that could be produced by the complete reaction of 500.0 g of ammonia, 700.0 g of oxygen and 400.0 g of methane according to the ...

chemistry

In a constant-pressure calorimeter, 75.0 mL of 0.830 M H2SO4 was added to 75.0 mL of 0.310 M NaOH. The reaction caused the temperature of the solution to rise from 23.20 °C to 25.31 °C. If the solution has the same density and specific heat as water, what is ΔH for this...

chemistry

In a constant-pressure calorimeter, 75.0 mL of 0.950 M H2SO4 was added to 75.0 mL of 0.460 M NaOH. The reaction caused the temperature of the solution to rise from 21.13 °C to 24.26 °C. If the solution has the same density and specific heat as water, what is ΔH for this...

Physics

In a constant-pressure calorimeter, 75.0 mL of 0.810 M H2SO4 was added to 75.0 mL of 0.390 M NaOH. The reaction caused the temperature of the solution to rise from 22.68 °C to 25.34 °C. If the solution has the same density and specific heat as water, what is ΔH for this...

Chemistry

Recall that all aqueoous solutions contain_____. Water can also undergo ____. This process is called the ______of water. The reaction can be written as: Notice the double arrow in the reaction. This indicates that the reaction is_____. However, only a tiny fraction of water ...

Chemistry

When solid magnesium nitride reacts with water the reaction produces solid magnesium hydroxide and ammonia gas. 26.0 grams of magnesium nitride are reacted with 17.6 grams of water. 1. How many grams of magnesium nitride will remain after reaction is complete? 2. How many ...

chemistry

Consider the following reaction at 298 K: C(graphite) +2Cl2 (g) -----> CCl4(l) Calculate the following quantities. Delta H: -139 kJ/mol deltaS(sys)=? J/mol*K deltaS(surr)=? J/mol*K deltaS(univ)=? J/mol*K My answer is: deltaS(sys)=-253.3J/mol*K deltaS(surr)=466.4 J/mol*K ...

Geo

For questions 33 and 34, write the equations for the lines parallel and perpendicular to the given line through the given point (one point for each equation). x - 3y = 9 through (2, -1)

maths-urgently needed

A line through through the point (3,0) meet the variable line y=tx at right angle at the point P. Find in terms of t, the co-ordinates of P

Science

a ball weighing 1.78N is shot through a launcher, achieving a speed from rest of 41 m/s in 0.28s what is the acceleration of the ball as it moves through the launcher?

From theory and practice

The most fundamental principle behind learning is that children A. learn through play. B. construct knowledge. C. learn through social interaction. D. learn when their physical needs are satisfied. My answer is A

Chemistry

Calculate the diffusion rate of deuterated methane through a set of barriers if fluorine will diffuse through the same barriers at a rate of 35.8 moles/sec

physics

A carnival swing is fixed on the end of an 7.7-m-long beam. If the swing and beam sweep through an angle of 100°, what is the distance through which the riders move?

phys1

A carnival swing is fixed on the end of an 7.6-m-long beam. If the swing and beam sweep through an angle of 130°, what is the distance through which the riders move?

Pre-Calculus

What is the equation of the line passing through (4, 2) and perpendicular to the line passing through the points (9,7) and (11,4)? Here's what I did: (7-4)/(9-11) = -3/2 y-2= (-2/3)(x-4) y-2=(-2x/3) + (8/3) y = (-2x/3) + 14/3 but the answer key says that it's y=(2x/3) - (2/3) ...

Science

Do light and sound travel at the same speed through solids, liquids, and gasses? What are the effects of light and sound traveling through different objects?

Chemistry Class

Dinitrogentetraoxide partially decomposes according to the following equilibrium: N2O4 (g) -> 2NO2 (g) <- A 1.00-L flask is charged with 0.400 mol of N2O4. At equilibrium at 373 K, 0.0055 mol ofN2O4 remains. Keq for this reaction is ?. hOw can i set up this problem?

chemistry

Consider the exothermic reaction CoCl42-(aq) + 6 H2O(l) Co(H2O)62+(aq) + 4 Cl -(aq). Will the equilibrium concentration of CoCl42- increase or decrease when the following changes occur? a) HCl is added. (b) Co(NO3)2 is added. both of those compounds are not even in the ...

CHEMISTRY

Hydrogen cyanide is used in the production of cyanimid fertilisers. It is produced by the following reaction: 2CH4 + 2NH3 + 3O2  2HCN + 6H2O (a) How much hydrogen cyanide can be produced starting with 100 kg of each of the reactants? (b) Which is the limiting reagent?

Chemistry

Determine the value of the equilibrium constant,Kgoal , for the reaction N2(g)+O2(g)+H2(g)<=> (1/2)N2H4(g) + NO2(g) Kgoal=? by making use of the following information: 1.N2(g)+O2(g)<=>2NO(g), K1=4.1010x10^-31 2.N2(g)+2H2(g)<=>N2H4(g), K2=7.40x10^-26 3.2NO(g)+...

Chemistry

Using Hess’s Law with the following data: N2(g) + O2(g) = 2NO(g) Del(H) = 180.7kj 2NO(g) + O2(g) = 2NO2(g) Del(H)= -113.1kj 2N2O(g) = 2N2(g)+ O2(g) Del(H)=-163.2kj Calculate Del(H) for the reaction: N2O(g) + NO2(g) = 3NO(g)

Chemistry

N2O5 is an unstable gas that decomposes according to the following reaction: 2N2O3(g) ---> 4NO2(g) + O2(g) What would be the total pressure of gases present if a 10.0L container at 22.0 degree centigrade begins with 0.400 atm of N2O5 and the gas completely decomposes?

Chemistry

Calculate the heat of reaction (ΔHrxn) for the following reactions, using heats of formation (ΔHf). Show your work. Refer to a table of heats of formation in your textbook as needed. 5O2(g) + 4NH3(g) → 6H2O(g) + 4NO(g)

Chemistry

Red mercury (II) oxide decomposes to form mercury metal and oxygen gas according to the following equation: 2HgO (s) yields 2Hg (l) + O2 (g). If 4.00 moles of HgO decompose to form 1.50 moles of O2 and 603 g of Hg, what is the percent yield of this reaction?

can some one pleasee help me!!!

The molecular structures of two ‘penicillin-like’ compounds, A and B. in the compound A the C-C-N ring is intentionally bold, as is the C-C-C-C-N ring in compound B. By comparing these structures assess which of A and B, might be (i) more active than penicillin against ...

math-calculus

write the following absolute value functions as piecewise functions. i really not get how to do this f(x) = |x| i think im supposed to state as positive and negative but i not even know what that x means. i only guessing and saying that for positive it be a positive x and for ...

math-calculus

write the following absolute value functions as piecewise functions. i really not get how to do this f(x) = |x| i think im supposed to state as positive and negative but i not even know what that x means. i only guessing and saying that for positive it be a positive x and for ...

Chemistry

Which of the following reactions is exothermic? 1. Na(s) --> Na(g) 2. Na(g) --> Na+ + e- 3. Cl2(g) --> 2Cl(g) 4. Cl(g) + e- --> Cl-1 My guess is 4, but I'm not sure Here is what you do. For 1, do we think it will take energy to change Na as a solid to Na as a gas. ...

science(chem)

How many mg of fluorenone can 0.53mol of sodium borohyride(NaBH4) reduce? ~I don't know how to get this..wouldn't I have to have a reaction equation given to me?? Well I didn't have one for the question given to me so I don't know what to do. I tried looking for the reaction ...

Biochemistry

Complete hydrolysis of 25 mM ethyl acetate in an enzyme esterase catalyzed reaction is carried out in a 40 mM NaCl solution buffered by 0.2 M Tris-Cl, pH 9.1. What is the pH at the end of the reaction? (For Tris base, which is the abbreviation for Tris (hydroxymethyl) ...

Chemistry

In an experiment, 0.0300 moles each of SO3(g), S02(g), and O2(g) were placed in a 10.0L flask at a certain temperature. When the reaction came to equilibrium, the cocentration of SO2(g) in the flask was 3.50x10^-5 molar. What is Kc for the reaction? 2SO2(g) + O2(g) <--> ...

Physics - reaction force

When you pull on a rope, the rope pulls back on you. Describe how the rope creates this reaction force.

biology help

Does photosynthesis require energy? What type of energy reaction would photosynthesis be? Is photosynthesis an example of a coupled reaction?

chemistry help

For the reaction shown, find the limiting reactant for each of the following initial amounts of reactants? 2Na(s)+Br2(g) ---->2NaBr(s) 1. 2mol Na, 2mol Br2 2. 1.8mol Na, 1.4mol Br2 3. 2.5mol Na, 1mol Br2 4. 12.6mol Na, 6.9 mol Br2

chemistry

You perform the following titration: You placed 35 mL of H2S in a flask and placed it under a buret. The buret contains 0.243M Sr(OH)2 and you are going to titrate the H2S with the base. You titrate until the color changes. At that point, you record that you used 10.15mL of ...

Chemistry

Which of the following is the formation reaction for CaO(s) ? A. Ca2+(aq) + O2–(aq) CaO(s) B. Ca(s) + .5O2(g) CaO(s). C. CaO(s) Ca(s) + .5O2(g) D. 2 Ca(s) + O2(g) 2CaO(s) E. 2 CaO(s) 2 Ca(s) + O2(g) Left with B and D. Please Help

chemistry

1. Nitrogen gas and sodium liquid are produced by the decomposition of sodium azide NaN3 (s). what volume of nitrogen gas, measured at 25 C and 0.980 atm, is produced by the decomposition of 62.5 g of sodium azide? 2. A gas sample in a container with a volume “V” at a ...

Chemistry

A solution made up of 1.00 M NH3 and 0.500 M (NH4)2SO4 has a pH of 9.26. a. Write the net ionic equation that represents the reaction of this solution with a strong acid. b. Write the net ionic equation that represents the reaction of this solution with a strong base. c. To ...

Science

Dust mites are microscopic bugs that are too small to see with a dissecting microscope. To see the details of a dust mite’s skin, which of the following microscopes would you use? A. dissecting microscope B. compound microscope C. transmission electron microscope D. scanning...

English

I am working on the flow chart for my English Assignment and I require some help. Task: Have to create a flow chart which shows the connections between the characters, events, and major ideas of Part One in reaction to Katniss the main character. I am not doing a flow chart on...

Math

Charlie is going to rent a truck for one day. There are two companies he can choose from, and they have the following prices. Company A charges $127 and allows unlimited mileage. Company B has an initial fee of $55.00 and charges an additional $0.90 for every mile driven. For ...

Algebra

Austin is going to rent a truck for one day. There are two companies he can choose from, and they have the following prices. Company A charges $104.00 and allows unlimited mileage. Company B has an initial fee of $65.00 and charges an additional $.60 for every mile driven. For...

Chemistry

The transformation shown below can be accomplished in TWO reaction steps. From the following list, select the two reagents (or sets of reagents) which would most effectively bring about this conversion. Reagents: 1. Conc H2SO4/heat 2. CN- 3. KMnO4 4. (i) CH3MgI (ii) H3O+ 5. ...

Math

find an equation for a plane parallel to the xy-plane; does not pass through the origin. (I know how you would find the equation if it says passes through a certain point. But I'm confused how to do it if it says does not pass through certain point)

math

This is my homework assignment, and this isn't the real problem. I made this one up. so you could walk me through the steps so I can do the real problem!! Thank you(: What is the slope of the line that passes through the pair of points (3/2 , -2) and (-3, 7/3).

Precal

Suppose that you are sitting in a chair on a Ferris wheel that has a diameter of 120 feet that is boarded 6 feet above the ground at the 6 o’clock position. If the Ferris wheel moves in a counterclockwise direction and makes one revolution every 12 minutes, how high will ...

Analytic Geometry

write the equation of a line through (4,1) and: A. parallel B. perpendicular to the line through (7,3) and (5,-1). =Express the equation in 5 different forms. please help!!

science

Unpolarized light is shown through two polarizing filters that are at 90 degrees. What fraction of light will pass through both filters?

Pre Algebra

Four numbers are drawn from random tiles numbereed 0 through 9. What are the odds of drawing numbers 1 through four in any order?

analytic

One line passes through the points (1,9) and (2,6), and another line passes through (3,3) and (-1,5). Determine the acute angle between the two lines.

analytic

One line passes through the points (1,9) and (2,6), and another line passes through (3,3) and (-1,5). Determine the acute angle between the two lines.

math grade 12

A sheet of plastic stops 25% of the light and lets through the residual 75%. What percentage of the light is let through by two sheets of the plastic ?

chemistry

The disintegration of a radioisotope, such as I-131 to Xe-131, is another example of a first-order reaction. It has a half-life of 8.0 days. I-131 -> Xe-131 + e If you start with 1.40 g I-131, how many grams of I-131 will be left after the following days? PLEASE HELP!!!!

chemistry

please help and explain. At a certain temperature, Keq = 10.5 for the equilibrium below. CO(g) + 2 H2(g) equilibrium reaction arrow CH3OH(g) Calculate the following concentrations. (b) [H2] in an equilibrium mixture containing 1.01 mol/L CO and 0.335 mol/L CH3OH

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