When 21.3 moles of c3h8 burn in excess oxygen how many moles of co2 will be formed?

63.9moles

Explanation:

Given parameters:

Number of moles of C₃H₈ = 21.3moles

Unknown parameter:

Number of moles of CO₂ produced = ?

Solution

In order to find the number of moles of carbon dioxide produced we must first write the balanced reaction equation.

This reaction is a combustion of hydrocarbon reaction. It usually occurs in the presence of excess oxygen gas and the product is water and carbon dioxide.

The reaction equation is shown below:

        C₃H₈ + 5O₂ → 3CO₂ + 4H₂O

From the equation:

         1 mole of C₃H₈ produced 3 moles of CO₂

Therefore, 21.3 moles of  C₃H₈ will produce (21.3 x 3)moles of CO₂

The number of mole of carbon dioxide produced is 63.9moles

a: 45.9 meters

b: 4.29 seconds

step-by-step explanation:

a: h(t)=1/2(-9.8)(3)^2+0(3)+90

h(t)=-4.9(3)^2+90

h(t)=-44.1+90

h(t)=45.9 meters

b: 0=1/2(-9.8)(t^2)+0t+90

0=-4.9t^2+90

-90=-4.9t^2

18.37=t^2

t=4.29 seconds

in the second question, the numbers aren't exact, but they're a close approximation.

here is table 2-2:

country

percent of eligible voters that voted

rank

united states

44.9%

138

canada

60.1%

107

costa rica

84.6%

14

hungary

66.9%

82

japan

57.0%

118

egypt

27.7%

159

south africa

85.5%

10

ans is no, the data set cannot be plotted as a single circle graph