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Chemistry
Page 83
Questions (96,726)
A laser produced a light of wavelenth 575 nm. How many photons of this light would have to strike a material for the material to
1 answer
asked by
Kamila
406 views
How to prepare 1000 nM stock solution using Tam (1 gm) Mol Weight=563.6
1 answer
asked by
la
372 views
To culinary experts and to the average person the term “Extra Virgin” has a ring of exclusiveness and quality to it. When it
1 answer
asked by
annonymous
369 views
A student titrates HCl with 0.0125M KOH. Starting with 50.00 ml of the acid it takes 40.0 ml of base to reach equilavence point.
1 answer
asked by
Joseph
426 views
A student titrates HCl with 0.0125M KOH. Starting with 50.00 ml of the acid it takes 40.0 ml of base to reach equilavence point.
1 answer
asked by
Joseph
406 views
We have 250. ml of He at 2.56 atm and 25 degrees C. What is the final volume if we heat the sample to 150 degrees C while we
1 answer
asked by
Tara
271 views
How many L of O2 are produced when 2.53 g of KClO3 (122.55g/mol) reacts at 0.934 atm and 354 K?
1 answer
asked by
Tara
359 views
12. Solutions cans be supersaturated if they contain more dissolved solute than saturated solutions under the same conditions.-
3 answers
asked by
mysterychicken
432 views
Can anyone tell me why the answer that I got here is not correct?
Pb(s) + AgNO3(aq) yields Ag(s) + PbNO3(s)
4 answers
asked by
Josh
321 views
What is the temperature (in kelvins) at which 0.0260 mol occupies 1.00 L at 0.563 atm?
1 answer
asked by
Emily
379 views
What is the number of moles in 1.00 L at -7°C and 725 torr. Remember 1atm = 760 torr?
1 answer
asked by
Haylee
397 views
how much chloride ions does 10.00 mL of .500M BaCl2 have?
1 answer
asked by
Yv ette
290 views
Calculate the approximate concentration of 41 mL of 6 M diluted to about 0.95 L of water?
1 answer
asked by
Amber
376 views
42. List four of the factors that affect the rate of a chemical reaction.
Temperature Concentration of reactants Surface area
1 answer
asked by
mysterychicken
426 views
Need help anwering this:
43. Explain how the fission can be slowed in the nuclear reactor. Thanks -MC
1 answer
asked by
mysterychicken
391 views
5. The products are the materials used in the reaction.- T?
28. Alloys are a. elements b. compounds c. mixtures A 30. An example
1 answer
asked by
mysterychicken
437 views
the mass in grams of 125 ion atoms
1 answer
asked by
Debbie
338 views
Need help with these---
28. Alloys are a. elements b. compounds c. mixtures 38. Alpha rays are really a. electrons b. helium
3 answers
asked by
mysterychicken
541 views
Can someone arrange for the strengths of the bonds below for me please?
lone pair, single bond, double bond, triple bond Thanks
1 answer
asked by
Steven B.
408 views
What is the total kinetic energy of 1.70 moles of N2 at 30.0 celsius?
What formula do I use?
1 answer
asked by
mia
284 views
In a gas expansion, 69 J of heat is absorbed from the surroundings, and the energy of the system decreased by 118 J. Calculate
1 answer
asked by
Rose
593 views
In a gas expansion, 69 J of heat is absorbed from the surroundings, and the energy of the system decreased by 118 J. Calculate
3 answers
asked by
Betty
681 views
find the reaction quotient: partial pressures are: p of N2=.903, P of H2=.888, P of NH3=.025
1 answer
asked by
Anne
325 views
find the reaction quotient: partial pressures are: p of N2=.903, P of H2=.888, P of NH3=.025
1 answer
asked by
Anne
351 views
What is the total kinetic energy of 1.70 moles of nitrogen gas at 30 celsius?
Please explain step by step by providing formula.
1 answer
asked by
Sarah
348 views
1. What is the pH of the solution created by combining 0.50 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HCl(aq)? with
1 answer
asked by
Kyo
409 views
given 65g of Zn and 65g of HCl, what is the limiting reactant and reactant in excess in Zn + 2HCl- ZnCl2 + H2
1 answer
asked by
Irene
368 views
A sample of low-fat margarine is heated and separates into two layers. Identify the top and bottom layers and explain why the
1 answer
asked by
Anonymous
364 views
If 4.0 L of a 4.8 M SrCl2 solution is diluted to 50 L , what is the molarity of the diluted solution?
1 answer
asked by
Lisa
406 views
The Kc for the reaction below is 4.8 X 10 ^-10.
1/2 N2 +1/2 O2 = NO what is the Kc for the following reaction? 2NO=N2 +O2
1 answer
asked by
Missy
360 views
how to determine the change in the number of moles of gas in the reaction 2H2 g + O2 g= 2H2Ol i thought it was 2 because the
1 answer
asked by
Blair
392 views
In calibrating a thermometer by setting only the freezing and boiling points, what assumptions are you making regarding the
1 answer
asked by
Chris
423 views
Thank you for being helpful in the check my interpretation of the three word problems below,and,let me know if I'm on the right
1 answer
asked by
Cliff
377 views
I really need help with this; it'll be the last chemistry question I ask:
44. Identify the type of reaction. a. AB ---> A+B b. AB
1 answer
asked by
mysterychicken
327 views
What is the chemical symbol for bromine vapour?
1 answer
asked by
Leah
380 views
How much heat is required to melt 43.5g of ice at its melting point?
1 answer
asked by
Yvone Miles
400 views
How much heat is required to melt 43.5g of ice at its melting point?
1 answer
asked by
Yvone Miles
411 views
What is the molarity of 350 mL of solution that contains 27 grams of CaCl2?
1 answer
asked by
Becky
365 views
What is the mass of 1.665 x 10 to the 22nd formula units of calcium acetate,Ca(C2H3O2)2?
1 answer
asked by
Becky
388 views
What is the molarity of 350 mL of solution that contains 27 g of CaCl2?
1 answer
asked by
Becky
340 views
2 H2O (l) → 2 H2 (g) + O2 (g)
Using the thermodynamic values to calculate accurate values of ΔHr and ΔSr, will the reaction
1 answer
asked by
John
390 views
Regarding the combustion of MgO, would the end product be higher, lower, or the same without removing the Mg3N2 by-product? I am
1 answer
asked by
Emmy
408 views
How can you determine which of any two halogens is more active?
1 answer
asked by
Molly
278 views
How many electrons would be required to fill the following sublevels?
*3s *4s *3d *4d *3p *2d *3f *4d Choices are as follows A. 2
1 answer
asked by
Kimberly
385 views
How many electrons would be required to fill the following sublevels?
This is what I got *3s = A *4s = A *3d = C *4d =C *3p =B
1 answer
asked by
Kimberly
334 views
What is delta H for NaOH(s)+1/4O2(g) yielding 1/2Na2O2(s)+1/2H2O(l) ?
1 answer
asked by
Michelle
423 views
How do I set up my equation to determine what the pH will be when the concentration of Fe^3+ is reduced to 10^-7? The previous
4 answers
asked by
Carl
333 views
What is the difference between and orbit and an electron orbital?
1 answer
asked by
Lala
368 views
How many milliliters of a 0.1 M NaOH solution is needed to completely neutralize 1 liter of lemonade containing 25% citric acide
1 answer
asked by
RS High School
448 views
Why does sulfric acid make the electrolysis reaction of H2 and O2 go more rapidly?
1 answer
asked by
Amanda
279 views
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