Questions LLC
Login
or
Sign Up
Ask a New Question
Chemistry
Page 33
Questions (96,661)
Helium gas in a balloon occupies 2.5 L at 300.0 K. The balloon is dipped into liquid nitrogen that is at a temperature of 80.0
4 answers
asked by
Lauren
3,698 views
When ammonium carbonate decomposes, what would happen to a glowing splint in the presence of the gases that are evolved. Explain
4 answers
asked by
jennifer
2,869 views
Calculate the standard entropy change for the dimerization of NO2: 2NO2(g)→N2O4(g)at 298 K, if
S◦ ∆H◦f J/K·mol �NO2(g)
4 answers
asked by
Gabriella
4,209 views
Which 2 groups of elements in the periodic table are the most reactive
5 answers
asked by
Anonymous
515 views
In which chemical equation is the number of atoms in the reactants the same as the number of atoms in the products?
A:Zn + 2HCl
7 answers
asked by
Fox whitmore
955 views
I have a lab dis monday .. plz someone help .. Lab Title is
(( Recrystallization of a Solid )) Pre-Lab Questions.... Explain the
4 answers
asked by
Juliana
1,543 views
Calculate the theoretical yield of ethyl acetate formed if 10 mL of ethyl alcohol (density = 0.79 ... (density = 0.79 G/mL; MW =
4 answers
asked by
Carla
1,969 views
Chromate ions react according to the following equation, where the left side of the reaction is yellow and the right side is
3 answers
asked by
Brooklynn
529 views
When solutions of H2SO4 and NaOH react, the balanced molecular equation is: H2SO4 (aq) + 2 NaOH(aq) Na2SO4(aq) + 2 H2O (I)
How
5 answers
asked by
Val
2,210 views
when 2.13 moles of C3H8 burn in excess oxygen, how many moles of CO2 will be formed? Assume this is a complete combustion
3 answers
asked by
christopher
2,645 views
Hydrogen peroxide can be prepared in several ways. One method is the reaction between hydrogen and oxygen, another method is the
5 answers
asked by
Dan
6,459 views
. Ksp for Fe(IO3)3 is 10-14. Two solutions, one being iron(III) nitrate and the other being sodium iodate, were mixed. At the
4 answers
asked by
Hannah
3,089 views
1.In which temperature of water did the food coloring diffuse faster?
2.Using your knowledge of the motion of molecules, explain
6 answers
asked by
JP
5,815 views
Imagine that you have a 6.00 L gas tank and a 3.00 L gas tank. You need to fill one tank with oxygen and the other with
7 answers
asked by
Sara
4,080 views
Which two groups of elements in the periodic table are the most reactive?(1 point)
Responses noble gases and alkali metals
12 answers
asked by
iuytredszdxcbnmjkjiu876543wq2asZxbnmkoiu8y76543wq2
460 views
a solution is prepared by dissolving 4.9 g of sucrose (c12h22011) in 175 g of water. calculate the boiling point and osmotic
4 answers
asked by
Ahmed Elsayed Ahmed
472 views
iron has a density of 7.86 g/cm3 and crystallizes a body centered cubic lattice. Show that only 68% of a body centered lattice
4 answers
asked by
Shayla
2,562 views
A student mixed two clear liquids together in a beaker and a solid precipitate formed. His data is shown in the table below.
Liqu
47 answers
asked by
Callie
20,453 views
Calculate the pH at the equivalence point for the titration of 0.160 M methylamine (CH3NH2) with 0.160 M HCl. The Kb of
6 answers
asked by
Sam
3,380 views
A student adds 5 g each of sand, sugar, and salt to 50mL of water. Did he make a solution? Explain
3 answers
asked by
Emily
579 views
The pH of a liquid is a measure of how acidic or basic it is. The concentration of hydrogen ions in a liquid is labeled [H+].
4 answers
asked by
Tori
828 views
17.5 mL of oxygen gas were collected at room temperature 22C and 100.2 kPa of atmospheric pressure.
a. How many moles of oxygen
3 answers
asked by
pasely
1,957 views
Calculate the solubility (in grams per 1.00 102 mL of solution) of magnesium hydroxide in a solution buffered at pH = 9. Enter
4 answers
asked by
Anonymous
1,777 views
How many moles of each of the following are needed to give the same freezing point lowering as 5.0mol of the nonelectrolyte
3 answers
asked by
Chemistry
1,074 views
is 4Fe + 3O2 --> 2Fe2O3 balanced?
5 answers
asked by
dani
4,636 views
If water with the mass of 15.0 grams is heated into water vapor in a closed system such as a closed glass jar, what is the mass
10 answers
asked by
Anonymous
3,493 views
Marble (calcium carbonate) reacts with hydrochloric acid solution to form calcium
chloride solution, water and carbon dioxide.
4 answers
asked by
john
838 views
9.0g of hydrated salted CuSO4 x H2O was dissolved in 500cm3 of water and it's concentration in moldm3 was experimentally found
4 answers
asked by
Francisca
365 views
Before 1937, all naturally occurring elements had been discovered, but no one had found any trace of element 43. Chemists were
5 answers
asked by
Jameisha
4,104 views
A student wants to conduct an experiment to see how much NaCl can be produced in the reaction between HCl and NaOH with water as
4 answers
asked by
wandi
871 views
You can obtain a rough estimate of the size of a molecule by the following simple experiment. Let a droplet of oil spread out on
3 answers
asked by
Brittany
4,014 views
If the pH of a nitric acid solution is 2.34, then what is the molarity of nitric acid in the solution?
A. 1.6 × 10-4 M B. 3.8 ×
6 answers
asked by
jessica
2,213 views
What color does lithium sulfide burn?
4 answers
asked by
The ConnexusGirl
2,294 views
how can you calculate the net charge of an ion if you know the number of protons, neutrons, and electrons it contains?
4 answers
asked by
rica
2,468 views
Consider the reaction
2 Al2O3(s) ! 4 Al(s) + 3 O2(g) . �H = +3339.6 kJ/mol What is the change in heat when 0.455 L of a 3.60 M Al
4 answers
asked by
Anonymous
3,870 views
How many molecules of sugar does this formula indicate you have: 4C6H12O6
6 answers
asked by
Brenlee Burns
2,225 views
Consider the following reaction:
CO(g)+2H2(g)⇌CH3OH(g) An equilibrium mixture of this reaction at a certain temperature was
7 answers
asked by
jessicaCC
6,973 views
I am doing a titration lab and need help with a problem. (i used .100M H2SO4)(I used 10.0 ml of Ba(OH)2 solution and added 50.0
4 answers
asked by
Charles
3,997 views
I did an experiment on a burning candle, and I need help with some of the questions. Thank you very much in return. Please no
5 answers
asked by
Sara
3,377 views
Is there a correlation between the values of the distribution coefficients and the polarities of the three compounds? Explain.
Pl
9 answers
asked by
CM
3,858 views
Pentane (C5H12) burns in oxygen to produce carbon dioxide and water.
C5H12(g)+8O2(g)→5CO2(g)+6H2O(g) Calculate the mass of CO2
6 answers
asked by
Alex
5,954 views
For the titration of 50.00 mL of 0.106 M NH3 with 0.225 M HCl, calculate
(A) the initial pH and when the pH neutralization is (B)
4 answers
asked by
Rosi
1,454 views
What happens at the particle level when you put ice cubes in the glass of room-temperature lemonade?
6 answers
asked by
Alicia
1,862 views
Why is Lithium more reactive than Neon? I honestly do not understand this.
4 answers
asked by
Bayleigh C
2,335 views
How many grams of calcium hydroxide will be needed to react completely with 10.0 g of phosphorus acid?
4 answers
asked by
Julia
1,147 views
Vanillin is the key component of vanilla extract that gives it its unique flavor. Assuming that vanilla extract is composed
5 answers
asked by
Allan
1,515 views
A 2.446-g sample thought to contain only one volatile substance, MgCO3, was heated in a nitrogen atmosphere for 30 min. After
5 answers
asked by
Ann
1,494 views
4. A solution contains 100 ppm of lead. Determine the mass of lead present in 0.500 kg of the solution.
16. While cleaning a
4 answers
asked by
carter
877 views
a 50% aqueous solution of ethanol (50mL total) is distilled and collected in 10-mL fractions. Predict the boiling range of each
5 answers
asked by
Steph
1,562 views
Calculate the standard cell emf for galvanic
cells with the cell reaction 2 H2(g) + O2(g) → 2 H2O(ℓ) in acidic solution.
4 answers
asked by
tyler
587 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