Which of the following is not a way in which sellers in monopolistic competition differentiate their products? a. physical differences b. location and services c. collusion d. product image

The chemistry lab at the University of Hardwoods keeps two acid solutions on hand. One is 20% acid and the other is 35% acid. How much 20% acid solution and how much 35% acid solution should be used to prepare 25 liters of a 26% acid solution?

How curious are you? How good are your quantitative skills? How hard are you willing to work to succeed in chemistry? Answer these questions individually on a scale of 1 (= not at all) to 5 (= very), then share your answers with your group. Report the group average for each question.

Olivia is a receptionist for a medical clinic. One of her tasks is to schedule appointments. She allots 20 minutes for a checkup and 40 minutes for a physical. The doctor can do no more than 6 physicals per day, and the clinic has 7 hours available for appointments. A checkup costs $55, and a physical costs$125. Write an objective function and list the constraints that model the given situation.

The four main branches of oceanography Include (choose all that apply)
A. biological oceanography
B. spatial oceanography
C. physical oceanography
D. graphical oceanography

Two molecules have different shapes but the same composition. Can you conclude that they have the same physical and chemical properties? Explain you answer.

(a) Draw all stereoisomers of molecular formula $\mathrm{C}_{5} \mathrm{H}_{10} \mathrm{Cl}_{2}$ formed when (R)-2-chloropentane is heated with $Cl_2$. (b) Assuming that products having different physical properties can be separated into fractions by some physical method (such as fractional distillation), how many different fractions would be obtained? (c) Which of these fractions would be optically active?

Give a physical explanation of the fact that the potential energy of a pair of charges with the same sign is positive whereas the potential energy of a pair of charges with opposite signs

A friend tells you, “Because composition does not change during a physical change, the appearance of a substance does not change.” Is your friend correct? Explain.

You are in a windowless car in an exceptionally smooth train. Is there any physical experiment you can do in the train car to determine whether you are moving?

In a chemistry lab, you have two vinegars. One is 5% acetic acid, and one is 6.5% acetic acid. You want to make 200 mL of a vinegar with 6% acetic acid. How many milliliters of each vinegar do you need to mix together?

The chemistry lab at the University of Hardwoods keeps two acid solutions on hand. One is 20% acid and the other is 35% acid. How much 20% acid solution and how much 35% acid solution should be used to prepare 25 L of a 26% acid solution?

Use the terms (freezing, gas, liquid, physical changes, solubility, solution, temperature, volume) to complete the sentence. The ability of a substance to dissolve in another is called _____.

Fitness in evolutionary theory refers to:

A. the capacity to survive.

B. the capacity to adapt to environmental demands.

C. reproductive success.

D. the physical skills necessary for survival.