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Chemistry
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Questions (98,743)
what is the pH of a solution prepared by adding 0.50 mol KOH to 1.0 L of 0.30 M HNO3?
5 answers
asked by
jj re
2,741 views
1. If 29.0 L of methane, CH4, undergoes complete
combustion at 0.961 atm and 140°C, how many liters of each product would be
6 answers
asked by
Anonymous
7,198 views
A bottle of a certain ceramic tile cleanser, which is essentially a solution of hydrogen chloride, contains 130 g of HCl and 750
6 answers
asked by
jen
4,465 views
1) Calculate the volume of air at 30 degrees C and 1.00 atm that is needed to burn completely 10.0 grams of propane. Assume that
4 answers
asked by
OhGodChemistry
3,734 views
Oxidation state of Group 4 (14) elements and their compounds.
a) Work out the oxidation state of carbon in these compounds:
17 answers
asked by
simon fredly
257 views
An enzymatic method for determining alcohol in wine is evaluated by comparison with a gas-chromatography (GC) method. the same
4 answers
asked by
Jam
1,736 views
Given the Na+/Na and K+/K half-cells, determine the overall electrochemical reaction that proceeds spontaneously and the E0
7 answers
asked by
Gabriella
4,098 views
What would the potential of a standard hydrogen (S.H.E.) electrode be if it was under the following conditions?
[H+] = 0.38 P(H2)
7 answers
asked by
Molu
14,440 views
when propane gas C3H8, is burned with oxygen, the products are carbon dioxide and water. Write an unbalanced formula equation
6 answers
asked by
kate
10,329 views
Good day,
Regarding ICE tables, how would you know which x's would be positive or negative for the Change row? I've heard to
5 answers
asked by
Dijames
1,674 views
the question reads:
a) balance the equation: H3PO4 + Ca(OH)2 --> Ca3(PO4)2 + H2O b)what mass of each product results if 750 mL of
5 answers
asked by
Anonymous
4,458 views
Do you think it is more useful to have the percent by mass of water in hydrate or the percentage composition, assuming that you
5 answers
asked by
cazzy
4,410 views
consider the equation for the following reaction at equilibrium. X+Y<-->2Z+heat the concentration of the product could be
5 answers
asked by
Jazmin F.
3,315 views
Use the following table of volumes and concentrations of strong acids and bases to determine the final pH for each solution (a -
4 answers
asked by
husoy
909 views
A 0.65 mole quantity of O2 occupies 4.0 L at 20.◦C. What is the final pressure exerted by the gas?
1. 0.92 atm 2. 3.9 atm 3.
6 answers
asked by
Dijames
6,480 views
would you expect barium to react with HCl acid faster or slower than calcium
1 answer
asked anonymously
38 views
A 5.0 g sample of Cu(NO3)2-nH20 is heated, and 3.9 g of the anhydrous salt remains. What is the value of n?
I got as far as
7 answers
asked by
Rona
10,012 views
How many grams of c6h12o6 are needed to form 7.50g of c2h5oh
5 answers
asked by
Winnie
5,585 views
We did not use the volume of the water added initially to the Erlenmeyer in our calculations. Why?
5 answers
asked by
Kim
1,980 views
An isotope of sodium has a half-life of 20 hours. Suppose an initial sample of this isotope has mass 10 grams. The amount of the
5 answers
asked by
Anonymous
1,690 views
Compared to the process of extracting lithium from mineral deposits, the process of extracting lithium from evaporation ponds
7 answers
asked by
Josiah
5,594 views
Vinegar contains ethanoic acid (CH3OOH).titration of 3.00g of vinegar with 0.12M NAOH Solution requires 23.0cm3 to reach the
5 answers
asked by
Ekekhide
1,216 views
What would be the effect on the percent acetic acid if 30 mL of vinegar had been used in place of 50 mL? Explain?
4 answers
asked by
Gwyneth
1,382 views
An 8.00 mass % aqueous solution of ammonia has a density of 0.9651g/ml. Calculate the molality, molarity, and mole fraction of
5 answers
asked by
ALISON
7,791 views
Complete the Bronsted lowry reactions
HPO42-+H+<--> HPO42-+OH-<-->
7 answers
asked by
Sharon
16,622 views
Describe how you would prepare a pure dry sample of calcium chloride in the laboratory
6 answers
asked by
Grace m
4,689 views
The voltage generated by the zinc concentration cell described by,
Zn(s)|Zn2+ (aq, 0.100 M)||Zn2+ (aq, ____ M)|Zn(s) is 24.0 mV
5 answers
asked by
Katherine
18,684 views
Plastic articles can be chromium-plated by coating them with thin layer of graphite paste,placing them in a bath of aqueous
5 answers
asked by
harish
3,954 views
When 0.40 g of impure zinc reacted with an excess of hydrochloric acid, 127 mL of hydrogen was collected over water at 10
5 answers
asked by
Sandy
5,914 views
Properties of chlorine, iodine and their compounds are compared.
Property Q for chlorine is smaller than for iodine. What is
5 answers
asked by
Marissa
1,702 views
help me..
The pKa of acetic acid, HC2H3O2, is 4.76. A buffer solution was made using an unspecified amount of acetic acid and
4 answers
asked by
Azy
3,080 views
If the reaction between H2 and I2 to form HI were at equilibrium and an additional 0.25 moles of H2 were added to the reaction,
5 answers
asked by
HQade
2,307 views
1.33dm³ of water at 70°c are saturated by 2.25moles of Pb(NO3)2, and 1.33dm³ of water at 18°c are saturated by 0.53mole of
17 answers
asked by
Kashim
4,445 views
How many liters of Chlorine at STP will react with 35L of 02 at STP given the following reaction?
2Cl2(g) + 7O2(g) - 2Cl2O7(l)
6 answers
asked by
Nan
2,694 views
Calculate the relative molecular mass of silver trioxonitrate(v)
6 answers
asked by
Simdy
2,502 views
Why must a hole be made in the aluminium lid
7 answers
asked by
Abbot
1,796 views
Why was a strong base (KOH) used in the synthesis of ferrocene? Why would a strong acid not be a suitable alternative?
5 answers
asked by
dana
2,197 views
In an experiment, a student mixes equal volumes of 0.0020M Pb 2+ ions with 0.0040M I- ions. The trial ion product is?
PbI2 <-> Pb
6 answers
asked by
sh
1,884 views
How many grams equal 6.3 mol of N2?
4 answers
asked by
pinky
1,207 views
The Ksp for nickel(II) hydroxide is 5.47E-16. What is the base dissociation constant for nickel(II) hydroxide?
So I started off
5 answers
asked by
a Canadian
2,591 views
For the formation of ammonia, the equilibrium constant is known to be 5.2 × 10^−5 at 25◦C. After analysis, it is determined
5 answers
asked by
Sara
1,870 views
Which of the following substances shown should the standard heat of formation (\DeltaΔHfo be zero at 25oC
GaPO4 (aq) As (l) Ar
4 answers
asked by
Sara
611 views
a milk sample analyzed "as received" is found to contain 6.31% fat and 11.2% water. what is the percentage of fat on a dry
3 answers
asked by
lecille gaudiano
837 views
How many of the following changes would alter the numerical value of the equilibrium constant Kp for the reaction 2OF2(g) ⇀
4 answers
asked by
Sara
858 views
In standardization of potassium tetraoxomaganate VII with ammonium iron II tetraoxosulphate VI , how do you find the molarity of
3 answers
asked by
FE
689 views
what concentration of nitrogen should be present in a glass of water at room temperature? assume a temperature of 29°C a total
3 answers
asked by
ashmit
2,020 views
Can the law of conservation of mass be applied when cooking? In one to two sentences, explain why.
7 answers
asked anonymously
91 views
which of the following has the highest boiling point?
a)C2Cl6 b)C2Br6 c)C2H6 d)C2F6 e)C2I6 i know its e, but why is that the
6 answers
asked by
RiChy
12,350 views
Calculate the number of atoms of chlorine present in 7.45g of KCL
5 answers
asked by
Daisy
2,979 views
in which chemical reaction is the number of atoms in the reactants the same as the number of atoms in the products?
a.
41 answers
asked by
stranger
22,380 views
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