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

17,654 results, page 45
1. ## chemistry

When 0.627 g of Ca metal is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 102C is observed. Assume the solution's final volume is 200.0 mL, the density is 1.00 g/mL, and the heat capacity is 4.184 J/gC. The molar heat of reaction, H rxn,
2. ## chemistry

A coffee-cup calorimeter is filled with 50 mL of 1 M NaOH and 50 mL of 1 M HCl, both at room temperature. After the reaction is complete, the final temperature of the solution is 32.5 degree C. Using the specific heat of water, calculate the heat of
3. ## Chemistry 400/ Chem 1A

A chemist mixes 5.216 g of potassium permanganate, 2.318 g of ethanol, and excess sulfuric acid. These chemicals react as follows: 4 KMnO4 + 5 C2H5OH + 6 H2SO4 ---> 4 MnSO4 + 5 CH3COOH + 2 K2SO4 + 11 H20 What mass of sulfuric acid is consumed in this
4. ## Chem I

Ok one more! Write the balanced equations and assign oxidation numbers to all atoms in these two reactions involving iron. If the effective oxidation number of any particular atom changes during the reaction then a redox reaction has occurred. If a redox
5. ## chemistry

I have to calculate the ΔV= final volume-initial volume For the first trial the final volume was .005mL the initial volume was .03mL, which equaled to -.025mL. The volume was negative because it was exothermic reaction. For the second trial the final
6. ## chemistry

I have to calculate the ΔV= final volume-initial volume For the first trial the final volume was .005mL the initial volume was .03mL, which equaled to -.025mL. The volume was negative because it was exothermic reaction. For the second trial the final
7. ## chemistry

An environmental chemist needs to determine the amount of Fe+2 ions in a simple of polluted water from a rusting industrial plant. one procedure is to analyses the sample by using solution of sodium dochromate, Na2Cr2O7. identify the oxdising agent and the
8. ## CHEM

I know I posted this question again but no one is really helping me. Can someone please help me as soon as possible. In a constant-pressure calorimeter, 60.0 mL of 0.340 M Ba(OH)2 was added to 60.0 mL of 0.680 M HCl. The reaction caused the temperature of
9. ## Chemistry

1) A reactions has a delta H of -76 Kj and a delta S of -117 J/K. Is the reaction spontaneous at 298 K? Work: Delta G= -76kJ/mol - 298K(-117J/K/1000) Delta G= -41.134 Spontaneous 2) A reaction has a delta H of 11 kJ and a delta S of 49 J/K. Calculate the
10. ## partial pressure

1) the value of Kb after the decomposition of sulfur trioxide (S03). 2SO3 (g)--2SO2 (g) +O2 (g) is 1.79 x10^-5 at 350 degree celcius. if SO3 initially at 0.200 atm pressure comes to equilibrium in an otherwise empty tank at 350 degree celcius, determine
11. ## CHEMISTRY

What is NOT is good laboratory method for preparation of oxygen gas? is the anwser here C or am i wrong A)photosynthesis B)electrolysis of water C)catalytic decomposition of hydrogen peroxide D) thermal decompositon of KClO3 Photosynthesis is not a good
12. ## chemistry

1) the value of Kb after the decomposition of sulfur trioxide (S03). 2SO3 (g)--2SO2 (g) +O2 (g) is 1.79 x10^-5 at 350 degree celcius. if SO3 initially at 0.200 atm pressure comes to equilibrium in an otherwise empty tank at 350 degree celcius, determine
13. ## chemistry

the value of Kp after the decomposition of sulfur trioxide (S03). 2SO3 (g)--2SO2 (g) +O2 (g) is 1.79 x10^-5 at 350 degree celcius. if SO3 initially at 0.200 atm pressure comes to equilibrium in an otherwise empty tank at 350 degree celcius, determine the
14. ## chem

Complete the reaction? IF no reaction say so H2O C4H6O3 ====> H2O c) Cu ===== > H2O d) K2O=====> e) 2 NaNO3 + ht →
15. ## CHEMISTRY&gt; HELP QUICK! pls

Calculate the reaction free energy of: H2(g) + I2(g) 2HI(g) when the concentrations are 0.026 mol L-1 (H2), 0.33 mol L-1 (I2), and 1.84 mol L-1 (HI), and the temperature is 700K. For this reaction Kc= 54 at 700 K. +11.6 kJ mol-1 0 kJ mol-1 -11.6 kJ mol-1
16. ## chemistry

what is the oxidation half reaction, reduction half reaction, and the complete balanced reaction of the following? (a) Al(s) + MnO4‾(aq) → MnO2(s) + Al(OH)4‾(aq) (b) Cl2(g) → Cl ‾(aq) + ClO ‾(aq) (c) NO2‾(aq) + Al(s) → NH3(g) + AlO2‾(aq)

Complete hydrolysis of 25 mM ethyl acetate in an enzyme (i.e., 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
18. ## Another A.P 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,
19. ## 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
20. ## biology

Initially, how do skeletal muscles (the type of muscle attached to bones) make ATP? write the reaction for this procss (Crp +ADP => Cr + ATP) as a 'coupled' reaction, identifying the exergonic and endergonic reactions. what would this type of ATP
21. ## A.P Chemistry

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,
22. ## Science

I need help with coming up a hypothesis for and Organic Compound lab! Anyone have an idea?
23. ## science

it has at lease one meal and one nonmetal element. compound salt
24. ## Chem

a dibasic compound , B, has pkb2 = 6.00. Find the fraction in the form of BH+ at pH 9.00
25. ## PELAGIE

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

What is the formula for the compound formed when potassium reacts with nitrogen?
27. ## chemistry

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

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

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

which of the following is not an organic compound: cellulose sucrose water testosterone
31. ## Chemistry

why are most elements on the periodic table found as compound in nature?
32. ## Chemistry

Write the formula for each Ionic compound. *barium nitrate
33. ## English

Is The dog followed the rabbit when it jumped into the bushes. a compound sentence?

what kind of electron determines if a compound is covalent or ionic?
35. ## MATHEMATICS.

FIND THE COMPOUND INTEREST OF 1400 IN 4YEARS AT 3% PER ANNUM
36. ## Chemistry

what compound is the result of silver nitrate and potassium bromide
37. ## physical science

for an ionic compound, the name of the negative ion comes first. True or False?
38. ## Chemistry

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

when you burn ionic and covalent compound using Bunsen burner,what you will see?
40. ## Chemistry

The percentage composition of chlorine, by mass, in the compound K2PtCl4 is
41. ## Chemistry

Can anyone please tell me what can you say about the purity of the compound extracted based on your TLC results? Thanks
42. ## Science

Why is water only compound occuring naturally on earth in three states?
43. ## Chemistry

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

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

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

what are 1 or 2 causes of loss of product that you may observe when synthesising a coordination compound
47. ## science

what compound is formed if you combine iron, sulphur and oxygen?
48. ## chemistry

which do you think would be more dangerous near an open flame, an ionic or covalent compound?
49. ## science

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

Find the compound interest on 650 in 5 years at 4% per annum
51. ## trig

Expan each of the following using the compound-angle formulae:sin(x + 20degree)
52. ## Chemistry

What happens when an electric current is passed through a solution of an ionic compound?
53. ## applied algebra

\$800 at 5 1/2% annual interest, compound semiannually, for 7 years
54. ## 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
55. ## ENGLISH

WE'LL, WON'T... WHAT IS THE PROPER PHRASE FOR THESE WORDS? IS IT A COMPOUND WORD?
56. ## algebra

Solve the compound inequality graph solution 6x-410
57. ## chemistry

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

calculate the moles of compound in .540g of ammonium bromide
59. ## English

In the sentence Manuel is the new goalie on the team. What is the compound noun
60. ## chemistry

whats the oxidation number for all the elements in the following compound BaNaPO4
61. ## chemistry

A dead alkaline battery is found to contain a compound of Mn and O. It's analysis gives 69.6% Mn and 30.4% O
62. ## chemistry

Can you make a compound and show the electrons for magnesium and sulfur
63. ## Algebra

Write the solution in interval notation x=-2. ) What would the compound inequality look like? Thanks for the help!
64. ## science

Ddraw an electron dot structure for a compound of fluorine and Z?
65. ## Chemistry- Naming compounds Nomenclature

i am having trouble with this compound. Molybdenum (VI) Chromate I'm have it find its formula and can't seem to get it. Thanks for the help.
66. ## 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
67. ## grammar

identify simple complete and compound subject and predicate
68. ## Chemistry

Which compound is most polar in nature? a) CO2 b) H2O c) F2 d) NaCl
69. ## algebra

Solve the compound inequality graph solution-2
70. ## chemistry

how do i name the ionic compound bythis formula (NH4)2Cr2O7
71. ## Chemistry

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

the correct formula for the ionic compound containing Tl^3+ and Te^2- ions would be: Please show. thank you
73. ## science

how to find if a compound e.g.CH3CN acts both as a nucleophile and an electrophile
74. ## science

Name the ionic compound form when a Magnesium reacts with chlorine?
75. ## Chemistry

What physical properties will the ionic compound CaSO4 be expected to have?
76. ## algebra

solve the compound inequality 3x-5>-17 and 4x+3
77. ## maths trigonometry

Expand the following using compound angle formulae Sin(m-n) Cos(p-55)
78. ## Chemistry

Why would Magnesium (Mg) be unable to combine with Chlorine (Cl) to make a compound?
79. ## chemistry

What is the percentage of water to the nearest tenth in this compound?Ba(OH)2*8H2O
80. ## chemistry

What quantity of solid compound? 300ml of 4% (w/v) ammonium chloride.
81. ## compound interest

If I invest \$30000 at 10% compound interest for eighteen years how much will i get
82. ## chemestry

a compound salt Xcl2 contains 203% chloride what is element x?
83. ## Chemistry

Since we say that sand is silicon dioxide,it is considered a compound and not a mixture?
84. ## Chemistry

If you were given 0.021 milligrams of the compound,H3PO4, what would the mass of H in the sample be?
85. ## chemistry

what is the total number of atoms in the compound (NH4)3PO4?
86. ## Chemistry

what is the gram molecular mass of the compound with the formula CH3COOH ? (1)22.4 g (2)44.0 g (3)48.0 g (4)60.0 g
87. ## solubility

The Ksp of mercury II hydroxide is 3.60 x 10^-26. Calculte the solubility of this compound in g/L
88. ## physical science

is AL ( aluminium) an element compound formula atom molecule
89. ## English

I can't unscramble this word it is a compound or a collective noun it is afsedrniru
90. ## Chem

Does Organic compound have weak or strong intermolecular forces?
91. ## Science

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

What do I do if a compound inequality contradicts itself? Do I put down empty set, or what?

What is the amount of compound interest for the investment in previous question
94. ## chemistry

What quantity of solid compound? 300ml of 4% (w/v) ammonium chloride.
95. ## Chemistry

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

Determine a compound that will precipitate the (Hg2)^2+ in Hg2X2(soluble).
97. ## Chemistry

Indicate how many stereoisomers are possible for each compound. b) tetrahedral [NiCl2Br2]2– c) octahedral [Fe(CO)4BrCl]
98. ## Chemistry

In fluorescence, why do we have to preapre a calibaration curve for every compound in our sample?
99. ## Physical Science

Milk is an example of a A.solution B.homogenous mixture C.colloid D.compound I think its a??
100. ## Chemistry

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