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Chapter 7: Q. 7.33 (page 226)

Dinitrogen oxide (or nitrous oxide), N2O, also known as laughing gas, is widely used as an anesthetic in dentistry.

a. How many grams are in localid="1653463981976">1.50molesof dinitrogen oxide?

b. How many moles are in localid="1653463992855" 34.0gof dinitrogen oxide?

Short Answer

Expert verified

(a) The 66g is in 1.50moleof dinitrogen oxide

(b) The 0.772moleare in 34gof dinitrogen oxide

Step by step solution

01

Part (a) Step 1: Given information  

We need to find the mass in 1.50moleof dinitrogen oxide

02

Part (a) Step 2: Simplify 

We know that

A mole is equal to molar mass

And molar mass of dinitrogen oxide is,44g/mol

Therefore, the mass in 1.50moleof dinitrogen oxide is,44gmol脳1.5mol=66g

03

Part (b) Step 1: Given information   

We need to find the no. of moles in 34gof dinitrogen oxide

04

Part (b) Step 2: Simplify 

We know that

A mole is equal to molar mass

And molar mass of dinitrogen oxide is, 44g/mol

Therefore, the no. of moles in 34gof dinitrogen oxide is,34g44gmol=0.772mol

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Most popular questions from this chapter

A toothpaste contains 0.240%by mass sodium fluoride used to prevent dental caries and 5.0%by mass KNO3, which decreases pain sensitivity. One tube contains119g of toothpaste
role="math" localid="1652503120563" NaFand KNO3 are components found in toothpastes.

  1. How many moles of NaFare in the tube of toothpaste?
  2. How many fluoride ions, F-, are in the tube of toothpaste?
  3. How many grams of sodium ion, Na+, are in 1.50gof toothpaste?
  4. How many KNO3formula units are in the tube of toothpaste?

Classify each of the following as a combination, decomposition, single replacement, double replacement, or combustion reaction:

a.4Fe(s)+3O2(g)鈫�2Fe2O3(s)

b.Mg(s)+2AgNO3(aq)鈫�2Ag(s)+Mg(NO3)2(aq)

c.CuCO3(s)鈫�CuO(s)+CO2(g)

d. Al2(SO4)3(aq)+6KOH(aq)鈫�2Al(OH)3(s)+3K2SO4(aq)

e.C4H8(g)+6O2(g)鈫�4CO2(g)+4H2O(g)

The chemical reaction of hydrogen with oxygen produces water.

2H2(g)+O2(g)鈫�2H2O(g)

a. How many moles of O2are required to react with 2.6moles of H?

b. How many moles of H2are needed to react with 5.0moles ofO2?

c. How many moles of H2Oform when 2.5moles of O2react?

Calculate the molar mass for each of the following :

a. O2 b. KH2PO4 c.FeClO43

Balance each of the following chemical equations, and identify the type of reaction: (7.4,7.5)

a.Si3N4(s)鈫�Si(s)+N2(g)

b.Mg(s)+N2(g)鈫�Mg3N2(s)

c.Al(s)+H2PO4(aq)鈫�H2(g)+AIPO4(aq)

d.C3H4(g)+O2(g)鈫�CO2(g)+H2O(g)

e.Cr2O3(s)+H2(g)鈫�Cr(s)+H2O(g)

f.Al(s)+Cl2(g)鈫�AlCl3(s)

g.MgCl2(aq)+AgNO3(aq)鈫�AgCl(s)+Mg(NO3)2(aq)
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