Questions LLC
Login
or
Sign Up
Ask a New Question
Chemistry
Page 9
Questions (97,935)
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
5,015 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
1,685 views
The reaction between sodium hydroxide and hydrobromic acid is represented in the equation below:
OH- + H+ -> H2O A 62.5 mL sample
4 answers
asked by
lola
5,713 views
what is the Ka for ethylammonium cation,C2H5NH3^+, at 25 celsius?(Kb for C2H5NH2=4.7x10^-4 at 25 Celsius)
5 answers
asked by
Bb
5,334 views
1)) The following two half-cells are paired up in a voltaic cell. How will lowering the pH affect the οE of the overall cell?
C
5 answers
asked by
Val
1,060 views
2. What is the reduction half-reaction for the following unbalanced redox equation?
Cr2O72β + NH4+ Cr2O3 + N2 A.) Cr2O3 ->
5 answers
asked by
jack
5,879 views
When 34.8grams of potassium sulphate was dissolved in 500cm cubed distilled water.calculate :the concentration of potassium
5 answers
asked by
lucy
1,568 views
determine the pH of a 0.116 M Ba(OH)2 solution at 25 degrees C.
i keep getting 13.06 for this answer, but the answer is 13.37 :S
7 answers
asked by
Anya
7,631 views
Which of the following gases would be most likely to experience ideal behavior at high pressures?
a. F2 b. Ne c. C2H6 I think the
5 answers
asked by
Christine
2,181 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
2,299 views
In a reaction Mg(s) + 2HCl(aq) β H2(g) + MgCl2(aq), 6.00 g of Mg was present at 0.00 min. After 3.00 min, 4.50 g of Mg
5 answers
asked by
Julia
3,233 views
Identify each enthalpy change by name and classify each change as exothermic or endothermic.
a)1 mol C3H8 (l) ==> 1 mol C3H8 (g)
5 answers
asked by
Sal
3,795 views
In the chemical reaction where N2O4(g) is converted to 2NO2(g), if 0.5 M N2O4 and 0.15 M NO2 are present in the vessel, is the
5 answers
asked by
Christine
2,661 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
2,965 views
Is potassium citrate ionic compound or molecular compound?
4 answers
asked by
Melissa
3,009 views
The standard enthalpy of combustion of C2H6O(l) is -1,367 kJ mol-1 at 298 K. What is the standard enthalpy of formation of
4 answers
asked by
abby
4,388 views
How many molecules are in 15g CH4? How do you figure this out?
4 answers
asked by
Lauren K.
1,287 views
Please tell me if these are right.
How many grams are needed to obtain 1.5 moles of magnesium oxide? I got 60grams is this right?
5 answers
asked by
Jason
1,127 views
Which statement accurately describes what happens in a reaction when reactants become products?(1 point)
Some reactants rearrange
7 answers
asked by
Jadyn
1,682 views
In an experiment, 0.0300 moles each of SO3(g), S02(g), and O2(g) were placed in a 10.0L flask at a certain temperature. When the
4 answers
asked by
Mitch
2,453 views
If 100cm3 of oxygen diffuses through a porous plug at 5cm3/sec how long will it take 200cm3 of methane to diffuse through the
4 answers
asked by
Sulaimon Martins
544 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
6,008 views
What would you expect to see if you performed the chemical reaction shown below? 2H2O2 β> H2O(l) + O2(g)
- solid precipitate
5 answers
asked by
Bri
2,577 views
If sulphur (iv) oxide and methane are released simultaneously at the opposite end of a narrow tube the rate of diffusion Rso2
5 answers
asked by
Brad
1,886 views
2 H2S (g) + SO2 (g) <===> ΖnΖn3 S (s) + 2 H2O (g)
1) At 298 K, the standard enthalpy change, HΒ’X, for the reaction represented
4 answers
asked by
JJ
2,758 views
For the equilibrium:
CO(g) + H2O(g) β CO2(g) + H2(g) KC = 10.0 If 1.6 mol of CO and 1.6 mol of water are initially added to a
4 answers
asked by
Potato34
711 views
A commercially available sample of sulphuric acid is 15% H2SO4 by mass (density=1.10g/ml) Calculate the molarity ,normality and
10 answers
asked by
riya
16,575 views
Insoluble silver carbonate, Ag2CO3(s), forms in the following balanced chemical reaction:
2AgNO3(aq) + K2CO3(aq) = Ag2CO3(s) +
6 answers
asked by
Gale
3,229 views
What is the pH of a 0.0344 M KOH solution?
5 answers
asked by
Cassie
1,280 views
Calculate the equivalent mass of each of the following acids.
a) HC2H3O2 b) KHCO3 c) H2SO3
7 answers
asked by
HELP PLEASE
2,685 views
10.0 g of NH4NO3 is dissolved in enough water to make 450.0 mL of solution. What is the molarity of the solution?
4 answers
asked by
Adrian Perez
744 views
What is the pH of a solution containing 0.81M HA and 0.35M A- ? Ka HA=5.45x10-8.
4 answers
asked by
Leaf02
536 views
Determine Kc at 298 K for the reaction 1/2 N2(g0 + 1/2 O2(g) + 1/2 Cl2(g)--> NOCl(g), given the following data at 298 K
1/2 N2(g)
4 answers
asked by
Jalisa
1,139 views
Even after twenty years of use, most quarters have the same shiny appearance that they did when they were minted. Most pennies,
4 answers
asked by
Homeworktaker
1,343 views
Fe2O3 + 2Al --> 2Fe + Al2O3
How many grams of Fe will form when 97.6g Al2O3 form? Please & Thank you
3 answers
asked by
Ana
2,557 views
How many atoms of Nitrogen are in 4(NHβ)βCrOβ ?
A. 1 B. 2 C. 8 D. 4
3 answers
asked anonymously
99 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
678 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
7,461 views
1. What is the pH of a 1.0 x 10-3 M solution of boric acid, H3BO3? The Ka value for boric acid is 6 x 10-10.
(choices: 3, 7,
4 answers
asked by
lilac
1,398 views
Hey this is my question:
At a temperature of 300Β°C and a pressure of 40.5 MPa, 90.0 mol of H2(g) and 80.0 mol of N2(g) are
3 answers
asked by
yo!
1,427 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
2,027 views
Indicate how many stereoisomers are possible for each compound.
b) tetrahedral [NiCl2Br2]2β c) octahedral [Fe(CO)4BrCl]
5 answers
asked by
Jematormal91
4,696 views
Which of the following substances would allow an electric current to flow through it easily?(1 point)
Responses aluminum (Al)
1 answer
asked anonymously
63 views
Construct the following diagrams and label them.An electrochemical cell with a salt bridge using copper and zinc electrode and
1 answer
asked by
Asu
33 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
162 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
2,446 views
Calculate the current that must be passed into a solution of aluminum salt for 1 hours 30 minutes, in order to deposit 1.5g of
5 answers
asked by
Olajide ifeoluwa
874 views
At STP, a 5.00L flask filled with air has a mass of 543.251g. The air in the flask is replaced with another gas and the mass of
5 answers
asked by
Kim
4,012 views
2n2o5(g)β4no2(g)+o2(g) when 40g of n2o5 decompose 4.5g of o2 is formed what is the percent yield
7 answers
asked by
Anonymous
2,007 views
Hydrocarbons A and B both contain 85.7 % carbon. Their molar masses are 42 and 84 respectively.
a) Which elements does a
6 answers
asked by
Amir
3,317 views
Pages
1
2
3
4
5
6
7
8
9
10
Parent Categories (62)
Academic Subjects
Advanced Placement (AP)
Arts and Sciences
Biology
Career
Earth Science
Education
Educational Resources
Experiments
General science
High School
History and Science
Homework Help
Industries
Majors
Math
Math and Science
Math/Science
Mathematics
Mathematics & Science
Mathematics and Science
Movies
Natural Sciences
Online Discussion
Physical Science
Physical Sciences
Physics
Science
Science & Environment
Science & Medicine
Science & Nature
Science and Biology
Science and Education
Science and Engineering
Science and Environment
Science and Experimentation
Science and Experiments
Science and Geography
Science and Health
Science and Math
Science and Mathematics
Science and Medicine
Science and Nature
Science and Research
Science and Technology
Science Education
Science Experiment
Science Experiments
Science Safety
Science/Educational
Science/Math
Science/Mathematics
Science/Molecular Biology
Science/Physics
Science/Technology
Sciences
Scientific Experiment
STEM (Science, Technology, Engineering, and Mathematics)
STEM (Science, Technology, Engineering, Mathematics)
Subjects
Test Preparation
Word Problems