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Chapter 2: Q152CP (page 88)

TNT (trinitrotoluene; below) is used as an explosive in construction. Calculate the mass of each element in 1.00 lb of TNT.

Short Answer

Expert verified

Themass of each element in 1 lb of TNT can be found, as:

m(C)=0.37lbm(N)=0.1850lbm(H)=0.0221lbm(O)=0.4229lb

Step by step solution

01

Calculating formula mass of TNT

The formula mass can be calculated by adding the mass of each element present, as,

Mr=7Ar(C)+3Ar(N)+5Ar(H)+6Ar(O)=7(12)+3(14)+5(1)+6Ar(16)=227amu
02

Calculating the mass percentage of each element

The respective percentage can be denoted as,

PercentageofC=7脳Ar(C)Mr(C7N3H5O6=84227脳100=37%PercentageofN=3脳Ar(N)Mr(C7N3H5O6)=42227脳100=18.50%PercentageofH=5脳Ar(H)Mr(C7N3H5O6)=5227脳100=2.21%PercentageofO=6脳Ar(O)Mr(C7N3H5O6=96227脳100=42.29%

03

Calculating the mass of each element

Each element can multiply the total mass by a percentage.

m(C)=1lb脳0.37=0.37lbm(N)=1lb脳0.1850=0.1850lbm(H)=1lb脳0.022=0.0221lbm(O)=1lb脳0.4229=0.4229lb

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Most popular questions from this chapter

Classify each substance in Problem 2.3 as an element, compound, or mixture, and explain your answers.

Fill in the blanks:

(a) The symbol and atomic number of the heaviest alkaline earthmetal are ________ and ________.

(b) The symbol and atomic number of the lightest metalloidin Group 4A(14)are ________ and ________.

(c) Group 1B(11) consists of the coinage metals.The symbol and atomic mass of the coinage metal whose atoms have the fewest electrons are________ and ________.

(d) The symbol and atomic mass of the halogen in Period 4 are ________ and ________.

The following charges on individual oil droplets were obtained during an experiment similar to Millikan's. Determine a charge for the electron( in coulombs), and explain your answer:
-1.602脳1019C;-4.806脳10-19C;-8.010脳10-19A;-14.42脳10-19C

For what type(s) of compound do we use Greek numerical prefixes in the name?

When Rutherford's coworkers bombarded gold foil with particles, they obtained results that overturned the existing (Thomson) model of the atom. Explain.
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