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Chemistry
Page 21
Questions (96,983)
What mass of NaCl do you need to make 71g of Cl2?
4 answers
asked by
savannah
2,325 views
(a) What is the pH of a 2.0 molar solution of acetic acid. Ka of acetic acid = 1.8 x 10¯5
(b) A buffer solution is prepared by
7 answers
asked by
Dave
3,203 views
Consider the reaction
4 KO2(s) + 2 CO2(g) → 2 K2CO3(s) + 3 O2(g). How much KO2 is needed to react with 75.0 L of carbon dioxide
4 answers
asked by
William Dane
2,318 views
What is the purpose for a company to determine percent yield of a product and not just the theoretical yield?
The percent yield
5 answers
asked by
so....help_me
1,197 views
How many grams of solid CuSO4. 5H2O are needed to prepare a 500 ml of a 1000 ppm solution of Cu?
5 answers
asked by
Lori
2,600 views
Consider a weak acid HX. If a 0.10 M solution of HX has a pH of 5.87 at 25°C, what is ΔG° for the acid's dissociation
5 answers
asked by
Sarah
2,405 views
suppose solute A has a partition coefficient of 4.0 between diethyl ether and water. Demonstrate that if 100mL of solution of
4 answers
asked by
Krystal
2,407 views
The following reaction occurs spontaneously. 2H+(aq)+ca(s) Ca2+(aq)+H2(g)
write the balanced reduction half-reaction
5 answers
asked by
Steve
5,505 views
A chemist wants to prepare a stock solution of H2SO4 so that a sample of 20.00mL will produce a solution with a concentration of
4 answers
asked by
Anonymous
4,110 views
A sample of (N2H5)2C3H4O4 contains 1.084 x 1024 carbon atoms. How many moles of hydrogen atoms are there in the same sample?
5 answers
asked by
Sanz
2,901 views
Suppose 20 atoms of hydrogen (H) react with chlorine (Cl) to produce 20 molecules of hydrochloric acid (HCl). According to the
5 answers
asked by
aren
1,614 views
Determine the percent composition of your unknown mixture.
My data for refractive indexes for acetone is 1.365 and water is
5 answers
asked by
Jenn
4,089 views
Which one of the following is not a redox reaction?
A. H2O(l) + NH3(g) → NH4+(aq) + OH¯(aq) B. 2H2(g) + O2(g) → 2H2O(l) C.
4 answers
asked by
Anooon
1,316 views
Given 4K + O2 → 2K2O, what is the reaction type?
Single Replacement Double Replacement Synthesis (formation) Decomposition
6 answers
asked by
julie jung
5,683 views
4. Suppose that an excess of propane, C3H8 , burns in 320 g of oxygen, How many moles of water will be formed?
C3H8 + 5 O2 --> 3
7 answers
asked by
Hannah
4,575 views
Acetic acid (HC2H3O2) is an important component of vinegar. A 10.00mL sample of vinegar is titrated with .5052 M NaOH, and 16.88
10 answers
asked by
natash
4,170 views
A dilute electrolyte is not necessary weak and a concentrated electrolyte weak and a concentrated electrolyte is necessary
3 answers
asked by
Tatu
198 views
An excess of silver nitrate solution was added to 10.0cm3of sodium chloride solution, and 0.717g of silver chloride was
4 answers
asked by
Jack
1,285 views
Complete and balance the following equations using the method of half-reaction. both reactions happen in acidic solutions:
a.
4 answers
asked by
lucylu
2,066 views
5C(s) + 2SO2(g) > CS2(l) + 4CO(g)
How many moles of carbon monoxide form at the same time that 0.246 mol CS2 forms?
5 answers
asked by
Tristan
6,545 views
Scientists in 1962 became very excited when they were able to create xenon tetrafluoride. Why was this an unusual feat? Why was
4 answers
asked by
Caitlyn
2,564 views
A mixture weighing 7.290 mg contained only cyclohexane, C6H12 (FM 84.159), and oxirane, C2H4O (FM 44.053). When the mixture was
7 answers
asked by
RJ
6,528 views
Determine pH of each solution:
b) 0.20 M CH3NH3I I did.... CH3NH3^+ +H2O -> CH3NH2 + H3O^+ 0.20 ---------------0--------------0
5 answers
asked by
ALISON
7,438 views
Which is the oxidizing agent in the reaction below.
Cr2O72- + 6S2O32- +14H+ > 2Cr3+ + 3S4O62- +7H20 A. Cr3+ B. S4O62- C. Cr2O62-
5 answers
asked by
Debbie
4,967 views
Arrange the following 0.10M solutions in order of increasing pH:
a. Nacl b. NH4CL C. HCL D. NaCH3CO2 e. KOH
4 answers
asked by
Liz
6,972 views
The presence of 11-cis retinal, C20H28O, in cells in the eye is important for vision.
The structure of retinal includes an
4 answers
asked by
Ariana
3,006 views
6.3 mg of a boron hydride is contained in a flask of 385 mL at 25. degrees C and a pressure of 11 Torr.
A. determine the molar
6 answers
asked by
Anonymous
4,935 views
K/U The enthalpy of reaction for a neutralization reaction is to be determined by mixing dilute solutions of an acid and a base
3 answers
asked by
Blessing
648 views
As a standard voltaic cell runs, it "discharges" and the cell potential decreases with time. Explain.
5 answers
asked by
Tim
4,472 views
The second ionization energy of He is almost exactly four times the ionization energy of H, and the third ionization energy of
4 answers
asked by
Dylan
2,433 views
A 0.8870g sample of a mixture of nacl and kcl is dissolved in water and the solution is then treated with an excess of agn03 to
4 answers
asked by
Carlos
5,871 views
When 14.5g of so2 react with 21g of O2 what will be the theoretical and percentage yiad of the reaction if the actealyid of the
2 answers
asked by
Nuredin
119 views
in a reaction 3.0moles of ch4 was react with excess of cl2. 265 g of ccl4 was obtained calculate theoretical yield and
3 answers
asked by
Falak naaz
135 views
How do you account for the difference in volume of the solids, in terms of intermolecular bonding?
2 answers
asked by
Leeland Watson
129 views
A buffer solution is prepared by adding 0.10 liter of 2.0 molar acetic acid solution to 0.1 liter
of a 1.0 molar sodium hydroxide
5 answers
asked by
Psy
157 views
There are many oxides of silver with the formula AgxOy. All of them decompose into their elements when heated strongly.
After
2 answers
asked by
w
114 views
A mixture of NaCl and sucrose (C12H22O11) of combined mass 10.2 g is dissolved in enough water to make up a 250 mL solution. The
3 answers
asked by
Brittany
3,128 views
I have to convert the following pressures into torr:
1. 2.48x10^-3atm 2. 4.75x10^6atm 3. 7.60x10^6 i have no idea how to convert
4 answers
asked by
bb
1,963 views
Silver chloride has a larger Ksp than silver carbonate. Does this mean that
AgCl also has a larger molar solubility than Ag2CO3?
4 answers
asked by
Chemistry help needed
4,644 views
Hydrogen gas was collected in a gas-collecting bottle with a volume of 30.0 mL by water displacement on a day where the
4 answers
asked by
Tania
1,748 views
If 15.50 of Pb( No3)2 are reacted with 3.81g of NaCl then NaNo3 and with PbCl are formed calculate the Mass of the excess
2 answers
asked anonymously
107 views
If 1.0 g samples of each compound were
dehydrated, which sample would lose the greatest mass of water? Molar Masses: LiCl* H2O=
4 answers
asked by
Anonymous
1,607 views
What happens to the following reaction at equilibrium if the pressure is decreased?
2H2(g) + O2(g) 2H2O(g) A. The equilibrium
5 answers
asked by
Laura
2,743 views
What mass of ethylene glycol C2H6O2, the main component of antifreeze, must be added to 10.0 L water to produce a solution for
9 answers
asked by
Saira
3,596 views
determine the molarity of each of the ions present in the following aqueous salt solutions (assume 100% ionization)
1.25 M CuBr2
4 answers
asked by
Anonymous
3,154 views
Use the image to answer the question.
An illustration shows two cubes. The cube on the top is labeled Nitrogen (N2). Inside this
3 answers
asked by
blasting music in my ears rn
187 views
When copper(II) nitrate reacts with sodium hydroxide, copper (II) hydroxide is produced. How many grams of Cu(OH)2 can be
5 answers
asked by
Ethan
2,667 views
Which term describes the repeated arrangement of the molecule?
A. Bonds B. Atoms C. Molecular Model D. Extended Structure
13 answers
asked by
Zeppeli
6,793 views
There are two alloys consisting of zinc, copper and tin. The first alloy contains 25% zinc and the second alloy contains 50%
4 answers
asked by
Tamasa
959 views
Calculate the density of sulfur hexafluoride gas at 703 torr and 23°C.
density is mass/volume so how do i get those from what i
5 answers
asked by
Samantha
8,435 views
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