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110. The mass of an average blueberry is 0.75 g and the mass of an automobile is 2.0 x 10 kg. Find the number of automobiles whose total mass is the same as 1.0 mol of blueberries.
25 Oct 2018
23 Oct 2018
26) In the Republic of Scarbonia, the market for widgets is "perfectly competitive". This means that, in Scarbonia: a) b) the price of widgets is set in the market, by supply and demand there are very few sellers of widgets, because of barriers to entry. the widgets made by different manufacturers have unique characteristics. some widget manufacturers, because they are bigger and better known than the more for their widgets d) others, can charge
6 Dec 2018
53. This reaction was monitored as a function of time: A — B+C A plot of In[A] versus time yields a straight line with slope -0.0045/s. a. What is the value of the rate constant (k) for this reaction at this temperature? b. Write the rate law for the reaction. c. What is the half-life? d. If the initial concentration of A is 0.250 M, what is the concentration after 225 s?
25 Oct 2018
11.43 ... A box of negligible mass rests at the left end of a 2.00-m, 25.0-kg plank (Fig. P11.43). The width of the box is 75.0 cm, and sand is to be distributed uniformly throughout it. The center of gravity of the nonuniform plank is 50.0 cm from the right end. What mass of sand should be put into the box so that the plank balances horizontally on a fulcrum placed just below its midpoint? Figure P11.43 K 75.0 cm Center of gravity Sandbox of plank 50.0 cm
21 Apr 2018

13 Mar 2019
16. Where do elements get their names?
28 Mar 2018
50. Write structural formulas for each of the possible isomers of n-pentyne that are formed by moving the position of the triple bond.
9 Mar 2018
31. Explain the difference between a plot showing the probability density for an orbital and one showing the radial distribution function.
1 Jan 2019

Why is sampling necessary?

9 Jul 2019
EXERCISE 2-13 Traditional and Contribution Format Income Statements [LO2-6] The Alpine House, Inc., is a large retailer of snow skis. The company assembled the information shown below for the quarter ended March 31: Amount \$150,000 \$750 \$50 Total sales revenue .............. Selling price per pair of skis ...... Variable selling expense per pair of skis ........ Variable administrative expense per pair of skis Total fixed selling expense. Total fixed administrative expense .... Beginning merchandise inventory Ending merchandise inventory ...... Merchandise purchases ... \$10 \$20,000 \$20,000 \$30,000 \$40,000 \$100,000 Required: 1. Prepare a traditional income statement for the quarter ended March 31. 2. Prepare a contribution format income statement for the quarter ended March 31. 3. What was the contribution toward fixed expenses and profits for each pair of skis sold during the quarter? (State this figure in a single dollar amount per pair of skis.)
25 Oct 2017
31.28. An L-R-C series circuit is constructed using a 175-22 resistor, a 12.5-F capacitor, and an 8.00-mH inductor, all con- nected across an ac source having a variable frequency and a voltage amplitude of 25.0 V. (a) At what angular frequency will the impedance be smallest, and what is the impedance at this fre- quency? (b) At the angular frequency in part (a), what is the maxi- mum current through the inductor? (c) At the angular frequency in part (a), find the potential difference across the ac source, the resistor, the capacitor, and the inductor at the instant that the cur- rent is equal to one-half its greatest positive value. (d) In part (c), how are the potential differences across the resistor, inductor, and capacitor related to the potential difference across the ac source?
6 Jan 2019

if prices are marked down 30% what is the regular selling price of a coat marked at \$300?

4 Mar 2019

Question asking for the highest theoretical temperature of water in celcius?