# lex

### need help with physics problem ?

1 AnswerPhysics2 weeks ago### need help with a calculus problem ?

1 AnswerMathematics3 weeks ago### need help with a couple calculus problems ?

2 AnswersMathematics3 weeks ago### Need help with biology question?

Need help with matching correct chromosomes to stages

1 AnswerBiology4 weeks ago### need help with calculus problem ?

1 AnswerMathematics4 weeks ago### Given the following limits, calculate the limits below, if they exist.? ?

lim f(x) = 4 as x approaches 1

lim g(x) = -2 as x approaches 1

lim h(x) = 0 as x approaches 1

(a) what is the lim [ f(x) + 5g (x) ] as x approaches 1?

(b) what is the lim [g(x)]^3 as x approaches 1?

(c) what is the lim of the square root of f(x) as x approaches 1?

(d) what is the lim of 2f (x) / g(x) as x approaches 1?

(e) what is the lim of g(x) / h(x) as x approaches 1?

(f) what is the lim of g(x) h(x) / f(x) as x approaches 1?

1 AnswerMathematics2 months ago### Need help with two TLC plate questions?

Both questions ask, Which TLC represents shows that the reaction did NOT go to completion?

1 AnswerChemistry3 months ago### need help with these two chemistry questions?

2 AnswersChemistry3 months ago### need help with trigonometry question ?

3 AnswersMathematics3 months ago### Chemistry question ?

Suppose 35 mg of benzoic acid is dissolved in 7 mL of dichloromethane. The resulting organic solution is then extracted with

12 mL of water. It is determined that the dicholoromethane layer now contains 31 mg of benzoic acid.

What is the partition coefficient (Kp) of benzoic acid in dichloromethane/water?

1 AnswerChemistry4 months ago### How did leaves modify to become stamen and pistils?

2 AnswersBotany7 months ago### how much of both is 9:1 petroleum ether/ethyl acetate mixture?

3 AnswersChemistry11 months ago### Need help with H NMR chemistry questions?

Each are isomers of C8H10O. I need a structure to fit each.

2 AnswersChemistry12 months ago### Need help with chemistry HNMR questions?

1 AnswerChemistry12 months ago### Need help with my organic chemistry question?

Purpose a step-by-step extraction scheme that illustrates how to separate a mixture of 2-nitrobenzoic acid, 4-chlorophenol, and cyclohexane. Your answer should be in the form of a flow chart, showing All the necessary steps that you will need in order to get the three compounds in the pure form.

1 AnswerChemistry1 year ago### Need help with organic chemistry questions on acid/base reactions?

2 AnswersChemistry1 year ago