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Chemistry
Page 81
Questions (96,428)
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
390 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
435 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.
406 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
324 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
367 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
404 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
390 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
376 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
410 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
387 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
389 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
333 views
What is delta H for NaOH(s)+1/4O2(g) yielding 1/2Na2O2(s)+1/2H2O(l) ?
1 answer
asked by
Michelle
421 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
330 views
What is the difference between and orbit and an electron orbital?
1 answer
asked by
Lala
367 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
446 views
Why does sulfric acid make the electrolysis reaction of H2 and O2 go more rapidly?
1 answer
asked by
Amanda
278 views
How much vinegar at 5% acetic acid concentration would be required to neutralize 100mL of 0.01 M NaOH? (Assume a density of
1 answer
asked by
Angie
412 views
A mixture of hydrogen and oxygen gas has pressure of 1.60 atm. Partial pressure of oxygen is 304 mmHg atm, what is the partial
1 answer
asked by
Sandra
442 views
What mass of phosphine gas yields 3.5x10^-6 moles of PH3
1 answer
asked by
Cathy
374 views
Dr. Bob get the use PV=nRT just stuck on setting up the problem help!
1 answer
asked by
Sandra
287 views
What anhydrous salt has a molecular mass of 258g/mol? I believe the results from my experiment were incorrect and i can not
1 answer
asked by
Ash
422 views
You weigh out 10.000 g of a mixture of NaHCO3 and Na2CO3 and add an excess of HCl. After the reaction is over, you evaporate off
1 answer
asked by
Vova
430 views
What is the structure of SN?
I thought .:S=N:: or ::S=N:. but both were deemed wrong by the homework software we have... help!
1 answer
asked by
Matt
279 views
Hydrofluoric acid etches glass by reacting with the silica in it according to the following equation.
H° = 54.5 kJ and S° =
3 answers
asked by
Melissa
347 views
Spilit acidic acid into half reactions CL03^- + I2 yields IO3^- + CL^-
1 answer
asked by
Anonymous
387 views
The second half of the equation is how i had done on the exam but he said its not balanced. How do I balance this? How would it
3 answers
asked by
Jess
363 views
How many pi bonds and sigma bonds are present in ritalin
I counted for pi bonds and 18 sigma bonds is that correct?
1 answer
asked by
Ryan
368 views
how do i find total pairs shared pair and lone pairs after creating the Lewis Structures
1 answer
asked by
Lola
386 views
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