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Chemistry
Page 24
Questions (97,942)
carbon dioxide dissolves in water to form carbonic acid. Estimate the thermodynamic equilibrium constanst (K) for this reaction
13 answers
asked by
Mima
8,536 views
NH3(g) + 2O2 (g) = HNO3 (aq) + H2O (l)
How do I calculate the oxidation states of Nitrogen and figure out if it is reduced,
7 answers
asked by
Carli
5,360 views
How many grams of Butane (C4H10) must be burned to release 6375 KJ of heat?
Given: Molar mass of C4H10 =
4 answers
asked by
Kell
2,913 views
Carbon dioxide gas has a solubility of 0.0972 g/100 g H2O at 40 degrees celsius. Expressed in parts per million, this
7 answers
asked by
Bob
5,896 views
a 3.5L sample of a 5.8M NaCl solution is diluted to 55L.What is the molarity of the diluted solution
4 answers
asked by
Monique
9,164 views
Which of the following aqueous solutions would you expect to be the best conductor of electricity at 25 degrees celcius? Explain
5 answers
asked by
Amber
4,006 views
If a neutral solution of water, with pH = 7.00, is heated to 50 deg C , the pH drops to 6.63.
Does this mean that the
5 answers
asked by
greeny
3,306 views
Convert a pressure of 23.8 in. Hg into kilopascal.
Ok so I looked up kilopascal and it Said 1 Kpa = 1000 pa So I began to set it
4 answers
asked by
Monique
2,618 views
Suppose that a 10-mL sample of a solution is to be tested for Cl- ion by addition of 1 drop (0.2mL ) of 0.15 M AgNO3 .
What is
5 answers
asked by
Josh
3,298 views
How many moles of NaCl are in 16.0 grams of NaCl?
5 answers
asked by
kourtney
2,041 views
My teacher gave us a packet with many questiona on it for homework. I was able to figure all 44 questions except the following
5 answers
asked by
Courtany
2,981 views
Calculate the pressure that ccl4 will exert at 40 of 1.00 mol occupies 28.0 L, assuming that
(a) CCl4 obeys the ideal-gas
7 answers
asked by
Anonymous
4,392 views
Explain why melting points of substances can be used as indicators of strength of intermolecular forces in given solids and
5 answers
asked by
Kamur
1,304 views
You have a stock 0.100 M solution of KMnO4 and a series of 100-mL volumetric flasks. What volumes of the stock solution will you
7 answers
asked by
confused
2,543 views
During the discharge of an alkaline battery, 4.50 g of Zn is consumed at the anode of the battery.
a) What mass of MnO2 is
4 answers
asked by
ACDub
3,256 views
A solution containing equal masses of glycerol, C3H8O3, and water has a density of 1.10 g/mL. Calculate the molality of
5 answers
asked by
Student
5,287 views
The purity of a pharmaceutical preparation of sulfanilamide, C6H4N2O2S, can be determined by oxidizing the sulfur to SO2 and
5 answers
asked by
darren
3,430 views
How many grams of KCl are needed to prepare 125ml of a 0.702M KCl solution?
4 answers
asked by
ADAM
1,443 views
Which type of sulphide has a Zig-Zag chain structure?
4 answers
asked by
Abubakar Osemu Abdulrahman
199 views
Does anyone have the answers for Chemistry B Semester Exam? =)
14 answers
asked by
hello
3,404 views
The quantity of antimony in a sample can be determined by an oxidation-reduction titration with an oxidizing agent. A 6.35-g
5 answers
asked by
Anonymous
4,878 views
If you wanted to create a equimolar buffer using 1.0 mol of NaHS in 1.0L of water what acid would you need to add? how many
4 answers
asked by
Jake
3,439 views
An 0.0284 aqueous solution of lactic acid is found to be 6.7% ionized. Determine Ka for lactic acid.
HC3H5O3 + H2O <-- --> H3O^+
5 answers
asked by
Sev
2,496 views
Current is applied to a molten mixture of CuF, ZnCl2, and AlBr3.
What is produced at the cathode? a)F2 b)Al c)Cu d)Zn e)Cl2 f)Br2
7 answers
asked by
George
7,225 views
Identify the acid/conjugate base and base/conjugate acid pairs for the following reactions
H2CO3(aq) + H2O(l) <===> H3O+(aq) +
4 answers
asked by
jake
4,864 views
A 6.00 M H2SO4 solution has d = 1.34 g/mL. What is the mass percent of H2SO4 in this solution?
5 answers
asked by
cc
2,514 views
Which of the following statements is true if HI is formed in the following reaction?
H2(g) + I2(g) → 2HI(g) a.There are no
5 answers
asked by
Ramon
1,872 views
If the pressure of the gas inside the flask were increased and the height of the column in the open-ended arm went up by 0.5mm,
5 answers
asked by
Kay
2,796 views
How many molecules of BrF2 form when 384g Br2 react with excess F2?
equation: Br2 + 5F2 ---> 2BrF5 I really just need the
5 answers
asked by
Ana
2,619 views
A 25.0 mL sample of 0.100 M pyridine (Kb for pyridine is 1.7 ✕ 10-9) is titrated with 0.100 M HCl solution. Calculate the pH
5 answers
asked by
joe
2,568 views
If the decomposition of potassium chlorate is incomplete assuming all measurements are accurate, what would be the effect on the
4 answers
asked by
Anonymous
1,631 views
Write the dissociation equation for iron(II) ammonium sulfate hexahydrate in water .
Fe(NH4)2(SO4)2 * 6H2O --> __?________ I know
4 answers
asked by
Christine
4,720 views
For each of the following chemical reactions:
a.)classify the reaction as combination, decomposition,single replacement, or
10 answers
asked by
Yeah
3,958 views
What is the freezing point of a solution prepared by adding 264g of copper(ii) sulfate to 4 liters of water? The freezing point
4 answers
asked by
Bruce Wayne
2,008 views
i tried to do like dis plz chk is it rite or wrong.
[2(4(327) + 495 ]- [ 2(4(327) + 523 ] = -28 Bond enthalpy is the energy
5 answers
asked by
Chem Help
5,466 views
would you classify 2C(s) + H2(g) ---> C2H2(g) +227.4 as endothermic or exothermic? Why?
4 answers
asked by
No Name
2,193 views
calculate the molarity of acetic acid in a vinegar sample,knowing that 5.00ml of vinegar requires 43.50ml of 0.105 M NaOH to
4 answers
asked by
denis
3,804 views
Calculate the concentration of a silver ion when the solubility product constant of AgI is 10^-16
5 answers
asked by
kayla
1,742 views
A voltaic cell operates with 0.40 M Zn 2+ at the solid zinc anode and 1.45 M Zn2+ at the solid zinc cathode at 25 C. Is the
4 answers
asked by
Anonymous
2,985 views
What is the molar mass of a solute if 62 g of the solute in 125 g of water produce a 5.3 molal solution?
5 answers
asked by
Anna
799 views
A galvanic cell is based on the following half-reactions at 25C:
Ag+ + e- --> Ag H2O2 + 2H+ + 2e- ---> 2H2O (not H2O2) Predict
5 answers
asked by
Andrew
4,746 views
5. Which of the following solutions has the highest pH? *
1.0 M Li2SO4 1.0 M CuF2 1.0 M NH4Br 1.0 M K2CO3
5 answers
asked by
lilac
741 views
Find the ΔHr0 for the reaction:
Na2CO3(s) +2HNO3(aq) → 2NaNO3(s) +CO2(g) +H2O(l) ΔHr0=+125.7kJ ΔHr0=-67.2kJ ΔHr0=-45.3kJ
5 answers
asked by
Anna
2,276 views
An elemental gas has a mass of 10.3 g. If the volume is 58.4 L and the pressure is 758 torre at a temperature of 2.5 degrees C,
5 answers
asked by
Kitty
6,179 views
The chemical explosive nitroglycerine has the formula C3H5(NO3)3. How many oxygen atoms are in the formula unit for this
5 answers
asked by
Drew
2,838 views
What is the pH of the solution formed when 0.040mol NaOH(s) is added to 2.00L of 0.020M HCl?
6 answers
asked by
IH
1,625 views
Use the reaction, which produces ammonia, to answer the question.
N2(g) + 3H2(g) ⇄ 2NH3(g) Which change would happen in the
16 answers
asked by
bill nye the science guy
5,456 views
Reaction 6
1. Place a piece of mossy zinc in a test tube 2 add hydrochloric acid solution to the test tube until the mossy zinc
5 answers
asked by
Rain
4,207 views
For the equilibrium:
NH4HS(s) ⇌ NH3(g) + H2S(g) How does Kp compare to Kc? Kp > Kc Kp = (Kc)1/2 Kp < Kc Kp = (Kc)2 Kp = Kc
4 answers
asked by
Panda
1,066 views
An antiseptic solution contains hydrogen peroxide,H2O2,in water. The solution is 0.600 m
H2O2. What is the mole fraction of
5 answers
asked by
Miky
1,300 views
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