Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
bobinhood
How do you balance this equation?
__MnO4- (aq) + __Fe2+ (aq) + __H3O+ (aq) --> __Mn2+ (aq) + __Fe3+ (aq) + __H2O (l)
The question asks: What is the coefficient for Fe2+ in the balanced equation. When I balanced it, I put an 8 in front of H3O+ on the left hand side of the equation and 12 in front of H2O (l) on the right side so that each side had 24 H and 12 O total. Thus, the Mn and Fe didn't need any coefficients. But according to the answer key, the coefficient for Fe2+ should be 5. Why?
3 AnswersChemistry5 years agoHow is dissolved oxygen related to psi?
For example, do higher p.s.i.'s have a higher DO or lower DO?
2 AnswersChemistry5 years agoIf hog sewage is accidentally dumped into a stream, will it affect turbidity, dissolved oxygen, conductivity, or pH?
Or more than one of those? If so, which of them?
1 AnswerChemistry5 years agoWhat does it mean for an X-chromosome deletion to be lethal when hemizygous or homozygous?
In the fruit fly (D. melanogaster), a known deletion on the X chromosome removes both a gene involved in the fly's development and the gene for eye color. The deletion is lethal when homozygous or hemizygous. Flies that are heterozygous for the mutation are viable, but have indentations at the wing margin. Therefore, the deletion is named the Notch mutation. The allele for wild type eyes is dominant over the allele for white eyes. Predict the phenotypic ratio of the offspring from from a cross between a white-eyed notched female and a wild-type male.
a) 1 wild type female; 1 notched female; 1 white-eyed male; 1 white-eyed notched male
b) 1 white-eyed female; 1 notched female; 1 white-eyed male
c) 1 white-eyed notched female; 1 wild type female; 1 white-eyed notched male; 1 wild-type male
d) 1 wild-type female; 1 notched female; 1 white-eyed male
3 AnswersBiology5 years ago
She she look better before surgery?
I think she looked much better before, personally. Not only did her nose change, but the rhinoplasty made her upper lip longer and almost monkey-ish and I think her nose tip actually looks wider, not narrower, after surgery. Am I the only one who sees this, or do you agree? I also think she looked more feminine before...
4 AnswersPolls & Surveys5 years agoThe osmotic pressure of an aqueous solution is measured... ...How will the osmotic pressure of the new solution compare to that of the old?
The osmotic pressure of an aqueous solution is measured vs. pure water. Some of the water in the solution is then allowed to evaporate. How will the osmotic pressure of the new solution compare to that of the old?
a. larger
b. smaller
c. cannot be determined from the information provided
d. no change
1 AnswerChemistry5 years agoWhich of the following aqueous solutions will have the lowest freezing point?
Which of the following aqueous solutions will have the lowest freezing point? (m stands for molality)
a. 0.035 m CH3CH2CH2OH
b. 0.0100 m Li2SO4
c. 0.015 m MgCl2
d. 0.0100 m NaCl
1 AnswerChemistry5 years ago0.254 M solution blue dye has absorbance 0.885. What's molar absorbtivity of this solution, assuming pathlength of cuvette (b) is 1 cm?
A 0.254 M solution of blue dye has an absorbance reading of 0.885. What is the molar absorbtivity of this solution, assuming that the pathlength of the cuvette (b) is 1 cm? (Include proper units) Absorbance = ε b C
Select one:
a. 0.225 M-1 cm-1
b. 3.48 M-1 cm-1
c. 0.287 M-1 cm-1
1 AnswerChemistry5 years agoWhich molecule has the largest dipole moment: HBr, HCl, HF, or HI?
1 AnswerChemistry5 years ago
