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Chemistry
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Questions (98,743)
Which aqeuous solution has a freezing point closest to that of 0.30M C12H22O11?
A) 0.075M AlCl3 B) 0.15M CuCl2 C) 0.30M NaCl D)
4 answers
asked by
Vic
2,505 views
What mass of KIO3 is needed to convert the copper in 0.2750 g of CuSO4 Β· 5H2O to
Cu(IO3)2?
4 answers
asked by
Liam
4,336 views
What is the only positive ion found in H2SO4(aq)?
a. ammonium ion b. hydronium ion c. hydroxide ion d. sulfate ion The answer's
5 answers
asked by
danny123
8,964 views
Consider the combustion of propane:
C3H8(g)+5O2(g) yields 3CO2(g) + 4H2O(l) delta H= -2221 kJ Assume that all of the heat comes
5 answers
asked by
Shellby
8,563 views
Calculate Delte G Knot for H20(g) + 1/2 O2 <-> H2O2(g) at 600. K, using the following data:
H2(g) + O2(g) <-> H2O2 (g) K = 2.3 X
5 answers
asked by
Summer
5,732 views
what does
Zn( NO3)2 form in a half equation for redox ( reduction and oxidation )??
4 answers
asked by
Layzell-Marie
2,935 views
Silver chloride, AgCl, would be least soluble in
A.1.0M HCl B.1.0M NaNO3 C.1.0M ZnCl2 D.1.0M AgNO3 and why? thx
5 answers
asked by
saphire
7,561 views
8.What is the mass of 4.56 moles of sulfur dioxide?
9.What is the mass of 4.56 molecules of sulfur dioxide? 10.How many formula
4 answers
asked by
grace
3,884 views
Calculate Ecell for reaction for the given info below..
O2(g)+2H2O(l)+4Ag(s)--> 4OH-(aq)+4Ag+(aq Ag+(aq)+ 1e ---> Ag(s) Ered=
4 answers
asked by
Hank
4,479 views
what is the name for the following coordination compounds or ions?
1. [Al(H2O)6] Br3 2. [Cr(NH3)6] Cl3 3. K3[FeF6] 4. [Zn(OH)4]-2
5 answers
asked by
Rachel
6,071 views
Calculate the pH that results when the following solutions are mixed
1. 35 mL of 0.20 M formic acid π»πΆπππ»,
5 answers
asked by
I need your help thanks
5,020 views
Why is the second derivative of a titration curve more accurate method to determine endpoints and equivalence points than the
4 answers
asked by
tevon
8,671 views
What is the half equation for oxidation process for copper strip inside of silver nitrate solution?
4 answers
asked by
Denica
4,343 views
If an element has an atomic number of 10, how many electrons are in its outermost shell?
a). 5 b). 10 c). 8 d). 2 e). The answer
6 answers
asked by
Mary
2,642 views
How would I find the volume occupied by 3 moles of N2 at zero degrees and 101.325 kPa?
5 answers
asked by
anonymous
1,557 views
Calculate the percent ionization of a 0.15 formic acid solution in a solution containing 0.11 potassium formate.
I have the
5 answers
asked by
redgy
3,083 views
A 0.03 mol sample of NH4NO3(s) is placed in a 1 L evacuated flask, which is then sealed and heated. The NH4NO3(s) decomposes
5 answers
asked by
jerry
5,410 views
Calculate the mass of sodium phosphate required to prepare 1.75 L of solution in which the sodium ion concentration is 0.25
5 answers
asked by
Zilly
3,237 views
The equation for burning C2H2 is
2C2H2(g) + 5O2(g) β―β 4CO2(g) + 2H2O(g) a. If 15.9 L C2H2 react at STP, how many moles of CO2
5 answers
asked by
rob
3,630 views
Given the following acid dissociation constants, which acid has the strongest conjugate base?
a. HCN Ka = 6.2 x 10-10 b. HOCl Ka
5 answers
asked by
Christine
2,188 views
You have the following acids and their conjugate bases available:
Acetic Acid: CH 3COOH/CH3COO-; Ka = 1.8 Γ 10-5 Carbonic Acid:
7 answers
asked by
Christine
2,309 views
The cell diagram for the lead-acid cell that is used in automobile and truck batteries is
Pb(s) l PbSO4 (s) l H2SO4 (aq) l
5 answers
asked by
Bridget
3,124 views
Does anyone have the answers for Chemistry B Semester Exam? =)
14 answers
asked by
hello
3,429 views
For the equilibrium H2(g)+CO2(g)<-->H2O(g)+CO(g)
Kc=3.18 at 1106 K.If each of the four species was initially present at a
9 answers
asked by
Andy
2,973 views
Which reactants could be used safely to prepare potassium chloride?
1. aqueous potassium hydroxide and dilute hydrochloric acid
4 answers
asked by
Marrion
1,989 views
Rank the compounds by stand molar entropy.
F2(g), Ne(g), HF(g) I am a little confused by this question, wouldn't it be ranked by
5 answers
asked by
Anonymous
7,943 views
Sea water contains an average of 1.08 x 10^3 ppm of Na+ ion. Calculate the molar concentration of Na+ given that the average
4 answers
asked by
marie
6,014 views
Calculate the hydrogen ion concentration and the pH of each of the following solutions of strong acids.
(a) 0.00010 M HCl if you
4 answers
asked by
lyne
1,278 views
In the chemical reaction where 0.1 M of N2O4 (g) is converted to 2NO2 (g), what are the concentration values of NO2 (g) in the
7 answers
asked by
Anonymous
1,889 views
Insoluble silver carbonate, Ag2CO3(s), forms in the following balanced chemical reaction:
2AgNO3(aq) + K2CO3(aq) = Ag2CO3(s) +
6 answers
asked by
Gale
3,235 views
The pH of a .200M HBrO solution is 4.67. What is the acids Ka?
4 answers
asked by
Shayla
1,671 views
Carbon dioxide is usually formed when gasoline is burned. If 30.0 L of Co2 is produced at a temperature of 1.00 X 103 C and
7 answers
asked by
Sylvia
3,543 views
H2(g) + I2(g) 2 HI(g)
The forward reaction above is exothermic. At equilibrium, what happens if I2 is removed from the reaction
4 answers
asked by
student
3,291 views
Calculate the xolubility of calcium sulfate in 0.010 mol/L calcium nitrate at SATP
CaSO4 ==> Ca^+2 + SO4^= Ca(NO2)2 ==> Ca^+2 +
7 answers
asked by
Dustin
2,489 views
Just wanted to make sure I did this right.
Use the equation to answer the question. FeCl3 +3NH4OHβ-> Fe(OH) 3 +3NH4Cl Which
4 answers
asked by
:)
462 views
Vapour pressure of benzene and toluene are 0.9bar and 0.85bar. 7.8g of benzene is added to 180g of toluene. To find the vapour
4 answers
asked by
Isha
3,702 views
What will be observed when aqueous silver trioxonitrate (v) is added to aqueous sodium bromide
4 answers
asked by
Akinlo
1,297 views
Cobalt ions form complex ions with water and chloride as shown in the reaction. The left side of the reaction is pink, and the
4 answers
asked by
Cc22
890 views
what is the pH of a solution prepared by adding 0.259g of ammonium chloride to 115mL of water? Kb of NH3 is 1.8x10^-5
3 answers
asked by
Jill
1,493 views
Calculate the pH and the poH 0.0035moldm-3 H3 PO4 solution
3 answers
asked by
Ayomide
418 views
Calculate the percentage of carbon in ethanedioic acid Crystal
C2H2O4.2H2O.
2 answers
asked by
Ismaila Oluwaseun
375 views
Synthesis gas consists of equal volumes of:
a. \\(NO^{2}\\) and \\(H_{2}O\\) b. CO and \\(H_{2}O\\) c. \\(N_{2}O \\)and CO d.
3 answers
asked by
Abubakar Osemu Abdulrahman
112 views
1. Calculate the standard enthalpy change for the reaction:
C2H4(g) + H2(g) β C2H6(g) given that the enthalpy of combustion for
4 answers
asked by
John
7,471 views
Write the standard line notation for each cell below.
IO3-(aq) + Fe2+(aq)--> Fe3+(aq) +I2(aq)
4 answers
asked by
Janvi
4,293 views
What weight of na2co3 of 95% purity would be required to neutralize 45.6ml of 0.235n acid?
I want you step by step clearly
3 answers
asked by
Fai
2,032 views
How many milliliters of 50% w/v dextrose solution and how many milliliters of 5% w/v dextrose solution are required to prepare
1 answer
asked by
Riek
80 views
Indicate how many stereoisomers are possible for each compound.
b) tetrahedral [NiCl2Br2]2β c) octahedral [Fe(CO)4BrCl]
5 answers
asked by
Jematormal91
4,706 views
The indicator methyl red has a pKHIn = 4.95. It changes from red to yellow over the pH range from 4.4 to 6.2.
If the indicator is
4 answers
asked by
cp
168 views
on chemical scale, the relative mass of the isotopic mixture of x atoms (x^20,x^21,x^22) is approximately equal to:(x^20 has 99
6 answers
asked by
veer
2,458 views
Methane, CH4 burns in oxygen gas to form carbon dioxide and water. How many moles of carbon dioxide will be formed from 8.0g of
5 answers
asked by
Denmark
8,395 views
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