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Chemistry
Page 25
Questions (96,983)
What are the oxidation numbers for the elements in the compound C2H5COOH?
4 answers
asked by
Henry
2,911 views
Explain why chemists might want to prepare substituted hydrocarbons. Give two examples of possible substitutions.
5 answers
asked by
Savannah
1,917 views
How would you prepare 250 mL of a 10% (w/v) KCl solution? (KCl=74.6 g/mol)
4 answers
asked by
sea
2,964 views
What is the concentration of a H2SO4 solution if 10.0 mL of the solution is neutralized by
7.8 mL of a 0.20 M NaOH solution?
4 answers
asked by
Ivy
4,175 views
You are a workstudy for the chemistry department. Your supervisor has just asked you to prepare 500mL of 3M HCl for tomorrow's
7 answers
asked by
Lauren
4,675 views
Study the chemical reaction.
A + B ⟶ C + D A scientist studying this reaction states the reaction is first order with regard to
4 answers
asked by
anon
1,814 views
Calculate the molar solubility of BaSO4 in a solution in which [H3O+] is 0.50 M. Ksp(BaSO4) = 1.1×10-10,
Ka(HSO4-)=1.02×10-2
4 answers
asked by
anna
3,343 views
The solutions of both Ag+ and Zn2+ ions have no color. What does this suggest about their electron configurations?
5 answers
asked by
Jessoca
3,543 views
The molar solubility of Pb(IO3)2 in a 0.10 M NaIO3 solution is 2.4 10-11 mol/L. What is Ksp for Pb(IO3)2?
5 answers
asked by
Steve
6,221 views
HOW YOU PREPARE 30.0ML OF 0.800M HNO3 FROM A STOCK SOLUTION OF 4.OOM HNO3? WHAT SOLUTION IN ML OF THE 4.OOM HNO3 SOLUTION WILL
4 answers
asked by
SARAH
3,944 views
calculate the number of moles in 0.00655 g of antimony
6 answers
asked by
lala
1,700 views
Some hydrogen is collected over water at 10 degrees C and 105.5 kPa pressure. The total volume of the sample was 1.93 L.
5 answers
asked by
Charlie
2,590 views
4.00 mol of solid A was placed in a sealed 1.00-L container and allowed to decompose into gaseous B and C. The concentration of
18 answers
asked by
Anon
6,827 views
Ethylene glycol, C2H6O2, is used as antifreeze for automobile engines. If you want to produce 2.00 kg of ethylene glycol from
5 answers
asked by
Maggie
2,375 views
A sample of H2 gas (12.28 g) occupies 100.0 L at 400.0 K and 2.00 atm. How much volume will a 9.49 g sample of H2 occupy at 353
5 answers
asked by
Anonymous
5,478 views
how many hydrogen atoms are present in 2.84 moles of water
4 answers
asked by
Anonymous
1,933 views
An experiment in your laboratory requires 500 mL of a .0200 M solution of Na2CO3. You are given solid Na2CO3, distilled water
4 answers
asked by
Jennifer
2,568 views
Ammonium iodide dissociates reversibly to ammonia and hydrogen iodide:
NH4I(s) ↔ NH3(g) + HI(g) At 400ºC, Kp = 0.215. If 150 g
4 answers
asked by
Jason
2,936 views
Question 1.
A Compound Containing 3 Atoms Of Carbon & 8 Atoms Of Hydrogen Is Combined In A Reaction With Oxygen Molecules. The 2
5 answers
asked by
Jen
4,675 views
A 100 mL sample of 0.40 M hydrofluoric acid is mixed with 100.0 mL of 0.2M lithium hydroxide. Find the pH of the final solution.
5 answers
asked by
qwerty
1,016 views
Calculate the pH of a 0.053 M (C2H5)2NH solution (Kb = 1.3 10-3).
5 answers
asked by
Kaleen
2,149 views
The pH of a 1.0 x 10^-3 M Ba(OH)2 solution at 25 degrees C is
how can 11.3 be the right answer.
4 answers
asked by
LT
1,814 views
How many molecules are there in an ideal gas with a volume of 1.99 L at STP?
5 answers
asked by
rachel
1,487 views
An unknown gas is placed in a 1.500 L bulb at a pressure of 356 mm Hg and a temperature of 22.5 ∘C, and is found to weigh
5 answers
asked by
Tyler
2,537 views
In the formation of smog, nitrogen and oxygen gas react to form nitrogen dioxide:
N2(g)+2O2(g)→2NO2(g)How many grams of NO2
6 answers
asked by
ellie
2,568 views
how many atoms of C are in 2 moles of sucrose C12H22O11?
please help
4 answers
asked by
suzie
1,798 views
What would you expect to see if you performed the chemical reaction shown below? 2H2O2 —> H2O(l) + O2(g)
- solid precipitate
5 answers
asked by
Bri
2,557 views
How many No.of ions of cadmium present in 3n moles of cadmium nitrate
4 answers
asked by
Farhana
1,806 views
at high temperatures, ammonia decomposes to N2 and H2.
2 NH3(g)--> N2 (g) + 3H2(g) Delta H for the reaction is positive and delta
5 answers
asked by
Brunette
4,575 views
What mass of chromium could be deposited by electrolysis of an aqueous solution of Cr2(SO4)3 for 180.0 minutes using a constant
6 answers
asked by
ill matic
4,436 views
What [I-] should be maintained in KI(aq) to produce a solubility of 1.4×10−5 mol PbI2/L when PbI2 is added?
Ksp of PbI2 = 7.1
4 answers
asked by
Karissa
2,417 views
The standard heat of combustion of eicosane, C20H42 (s), a typical component of candle wax, is -1.332 x 104 kJ/mol (consider
5 answers
asked by
Anonymous
4,652 views
According to the reaction 2Al+3H2SO4→3H2+Al2(SO4)3, the total number of moles of H2SO4 needed to react completely with 5.0 mol
7 answers
asked by
Hopeless person
5,227 views
Gas is confined in a tank at a pressure of 10.0 atm and a temperature of 15o
C. If half of the gas is withdrawn and the
5 answers
asked by
Angie
2,017 views
What volume of steam is produced when 10g of propyne is burnt in excess oxygen at STP
4 answers
asked by
Divine
676 views
Use an enthalpy diagram to calculate the lattice energy of CaCl2 from the following information. Energy needed to vaporize one
5 answers
asked by
Luke
6,770 views
What is the pH of a saturated solution of silver hydroxide, given Ksp =1.56*10^-8
4 answers
asked by
Victoria
1,981 views
What is the maximum concentration of Ca2+ ions in a solution containing 0.010 M of F- ions?
5 answers
asked by
Katie
2,489 views
Why does changing the volume of the reaction vessel have no effect on this equilibrium?
CO(g) + Fe3O4(s) <===> CO2(g) + 3FeO(s)
5 answers
asked by
Sammy
2,765 views
The equilibrium constant for the reaction, H2(g) + I2(g) ⟷2HI(g) is
54.9 at 699.0 K. What is the equilibrium constant for
4 answers
asked by
Adrienne
1,789 views
Ba(NO3)2(aq) Na3PO4(aq)
need to find Molecular, ionic and net ionic Equation
4 answers
asked by
aya
3,438 views
An industrial raw materials as the following composition by mass : iron = 28.1% chlorine = 35.7% and water of crystalization =
7 answers
asked by
Christy
2,343 views
A solution contains an unknown mass of dissolved barium ions. When sodium sulfate is added to the solution, a white precipitate
5 answers
asked by
Beth
5,419 views
If the reaction below proceeds with a 96.8% yield, how many kilograms of CaSO4 are formed when 5.97 kg SO2 reacts with an excess
4 answers
asked by
za
3,174 views
Write the cell notation for the reaction below. Show your work.
Cu+2(aq) + 2Ag(s) + 2Cl-(aq) --> Cu(s) + 2AgCl(s)
4 answers
asked by
Tomas
1,376 views
A 25.0 mL sample of 0.100 M propanoic acid (HC3H5O2, Ka = 1.3 ✕ 10-5) is titrated with 0.100 M KOH solution. after the
5 answers
asked by
bill
1,597 views
Calculate K at 25°C for the reactions given below.
(a) IO3-(aq) + Fe2+(aq) equilibrium reaction arrow Fe3+(aq) + I2(aq) (b)
5 answers
asked by
Sam
1,289 views
The units of parts per million (ppm) and parts per billion (ppb) are commonly used by environmental chemists. In general, 1 ppm
4 answers
asked by
qwerty
2,610 views
Calculate the molarity of 25.00ml H2SO4 solution if 32.48ml of 0.1068M NaOH is required to titrate? Balanced equation is
H2SO4(aq
5 answers
asked by
Jake
1,913 views
Solid NaI is slowly added to a solution that is .010M in Cu+ and .010M in Ag+...
a.) which compound will precipitate first b.)
4 answers
asked by
chemstudent
4,397 views
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