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When 3.75 g of a nonelectrolyte solute is dissolved in 405 mL of water at 25 °C, the resulting solution exerts an osmotic
4 answers
asked by
Anonymous
809 views
For the following equilibrium process:
CO2 + H2 = CO + H2O The equilibrium concentrations of reacting species are: [CO]= .050 M;
3 answers
asked by
Ronnie
1,229 views
The equilibrium between three substances, a, B and c is shown below.
A(g) + B(g) C(g) Initially there were 0.1 mol of a and 0.2
4 answers
asked by
Raj
2,822 views
What is the purpose of cell matching? (1 mark)
I've been researching for quite a long time now. This question relates to using
1 answer
asked by
Eunice
447 views
How do you find the amount in moles of excess reactant that reamins
Please retype that, minding your spelling. =) Can you please
1 answer
asked by
Beautiful
1,175 views
Which of the laws of thermodynamics provides a criterion for spontaneity?
the zeroth law, the first law, the second law, and the
1 answer
asked by
Cindy
634 views
Which of the following is NOT true about the thermodynamic standard state?
A. A solid is in its standard state when the
7 answers
asked by
Anonymous
614 views
Hello. I'm not n=sure about these answers so i was wondering if someone could check them out?
27, A: Which is a stronger acid -
2 answers
asked by
CRCAWF
630 views
Q1. How to find ions of a particular element.. Tell me the methods or procedure to do so?
Q2. What are X-rays? Q3. What do u mean
1 answer
asked by
Akashdeep
358 views
What is the phase of a compound at 600 mmHg and 32oC if it melts at 35oC when pressure is 760 mmHg? Its triple point occurs at
1 answer
asked by
Dan
414 views
At 25 °C, only 1.9 g CaSO4 (MM = 136 g/mol) will dissolve in 2.00 L of water. Write the equilibrium
expression and calculate the
4 answers
asked by
Michelle
1,124 views
I don’t understand how to write this equation.
Write an equation relating the concentration for a reactant A at t=0 to that at
2 answers
asked by
Jane
652 views
How do we improve the efficiency of Column Chromatography?
3 answers
asked by
Alan
1,000 views
I just took my Chemistry midterm, and would like to know how to calculate my grade on the midterm with the curve.
MEAN = 8.9
1 answer
asked by
Anonymous
403 views
Calculate the weight of KHP that will react with 25mL of .1M NaOH
3 answers
asked by
Sierra
865 views
What is the name of the following ion compund.
SrO Cr1I2
3 answers
asked by
Anonymous
394 views
Alpha, beta particles and gamma rays. How does the atomic number and atomic mass number change when a radioisotope decays to
2 answers
asked by
Ryan
544 views
Tris is an abbreviation for tris (hydroxymethyl) aminomethane, which is a weak base. Calculate how many grams of tris
4 answers
asked by
Cassandra
1,171 views
Hi I have done this problem like 15 times
when I find the mole I get .8 for HCL and .23 for Naoh and the equilibrium conc i get
1 answer
asked by
someone
442 views
Use these data to estimate Avogadro's number.
Palladium crystallizes with a face-centered cubic structure. It has a density of
3 answers
asked by
Lauren
1,718 views
Stomach acid is essentially 0.10 M HCl. An active ingredient found in a number of popular antacids is CaCO3. Calculate the
3 answers
asked by
Brit
548 views
For a particular redox reaction NO2– is oxidized to NO3– and Cu2 is reduced to Cu . Complete and balance the equation for
1 answer
asked by
Connor
913 views
Nitrogen dioxide, a pollutant in the atmosphere, can combine with water to from nitric acid. One of the possible reactions is
2 answers
asked by
Yasemine
673 views
During an experiment, a student adds 1.23 g of CaO to 200.0 mL of 0.500 M HCl. The student observes a temperature increase of
4 answers
asked by
imstupid
856 views
Calculate the molar mass of an unknown molecular compound mixed with solid camphor C10H16O, heated and then cooled giving the
2 answers
asked by
Kelly
1,017 views
Consider the equilibrium A(g)=2B(g)+3C(g) at 25 degrees Celsius. When A is loaded into a cylinder at 10 atm and the system is
2 answers
asked by
Anonymous
1,296 views
If Kc = 6.38 × 105 for the reaction
A(g) ⇀ ↽ 2B(g), what is Kc for the reaction written as 2B(g) ⇀ ↽ A(g)? How would I
3 answers
asked by
Sara
517 views
How many grams of ice at -24.3∘C can be completely converted to liquid at 23.9∘C if the available heat for this process is
3 answers
asked by
Steve
2,539 views
What courses should you take in each grade 9,10,11,12 to help you become a pharmacologist. i need courses for each grade
2 answers
asked by
Katherine
497 views
What is the pH of the buffer solution that results when 58.50 g of sodium acetate (NaCH3CO2) (Formula Mass = 82.02 g mol-1) is
2 answers
asked by
Sue
577 views
A mixture of 10.00 mL of H2SO4 and 30.00 mL of HCl required 20.00 mL of 2.500 M NaOH
for complete reaction. When 30.00 mL of
2 answers
asked by
Anonymous
641 views
You are given a colored solution that is labeled 1M. You need to prepare a solution from this that is 0.5 M. Describe your
3 answers
asked by
Rucha
839 views
How many milliliters of 0.200M NaOHsolution are needed to react with 44.0 mL of a 0.300 M NiCl2 solution?
2 answers
asked by
Toran
546 views
Check my work?
What is the approximate pH of a 0.05 M solution of HSCN that has a Ka of 10-4? HSCN -> H+ + SCN-
4 answers
asked by
Aurora
1,233 views
What is the ∆G for the following reaction under standard conditions (T = 298 K) for the formation of NH4NO3(s)?
2NH3(g) +
2 answers
asked by
Kaelah
856 views
Calcium Oxide is used to remove pollutant SO2 from smokestack gases. The ΔG° of the overall reaction
CaO (s) + SO2 (g) + ½ O2
4 answers
asked by
Moe
1,737 views
Write the chemical reaction that is responsible for the pH of a buffer which contains NH3 and NH4Cl. Write the reaction in such
3 answers
asked by
Anonymous
1,757 views
How do you solve Potassium carbonate + Lead(ii) chloride and balance it?
1 answer
asked by
Edme
341 views
If salicylic acid costs $21 per kilogram, how much would it cost to purchase enough salicylic acid (formula mass= 138.1) to make
3 answers
asked by
Jorge
591 views