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Chapter 2: Q. 2.101 (page 56)

Bill's recipe for onion soup calls for 4.0lb of thinly sliced onions. If an onion has an average mass of 115g, how many onions does Bill need? (2.6)

Short Answer

Expert verified

Bill needs a total of 16onions when the average mass of onions is 115g

Step by step solution

01

Introduction 

The given is the weight required for Bill for his onion soup

The objective is to determine the number of onions purchased by Bill

02

Step 1

Given,

Onion mass average is =115g

The total amount of onion needed to make onion soup =4.0lb

Conversion factor:-

1lb=454gm

The total amount of onion needed to make onion soup is,

4.01b脳454gm1lb=18614gm
03

Step 2

To make onion soup, you'll need a certain number of onions =Total mass of onion requiredAverage mass of onion

=18614gm脳1115gm

=16 onions (Rounding off two significant figures)

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Most popular questions from this chapter

Solve each of the following problems using one or more conversion factors:

a. A container holds 0.500 qt of liquid. How many milliliters of lemonade will it hold?

b. What is the mass, in kilograms, of a person who weighs 175 lb?

c. An athlete has 15% body fat by mass. What is the weight of fat, in pounds, of a 74-kg athlete?

d. A plant fertilizer contains 15% nitrogen (N) by mass. In a container of soluble plant food, there are 10.0 oz of fertilizer. How many grams of nitrogen are in the container?

A balance measures mass to 0.001g. If you determine the mass of an object that weighs about 31g, would you record the mass as 31g,31.1g,31.0Sg,31.075g,or31.0750 ? Explain your choice by writing two to three complete sentences that describe your thinking. (2.3)

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The price of 1lbof potatoes is 1.75. If all the potatoes sold today at the store bring in $1420, how many kilograms of potatoes did grocery shoppers buy? (2.6)

Measure the length of each of the objects in diagrams (a), (b). and (c) using the metric ruler in the figure. Indicate the number of significant figures for each and the estimated digit for each. (2.2)
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