At $2.186/gallon, how many pennies would it cost to buy 125 L of gasoline? (1 gallon =
128 oz, 1 oz= 29.6 mL)
PLS HELPPPP
Answers
Answer : The cost of pennies to buy 125 L of gasoline would be, $71.92
Explanation :
As we are given that the cost to buy gasoline is $2.186/gallon.
Now we have to determine the cost to buy 125 L of gasoline.
First we have to convert 125 L into gallon.
Conversion used:
(1 gallon = 128 oz, 1 oz= 29.6 mL, 1 mL = 0.001 L)
As, 1 L = 1000 mL
So, 125 L = 125000 mL
and,
As, 29.6 mL = 1 oz
So, 125000 mL = [tex]\frac{125000mL}{29.6mL}\times 1oz=4222.9oz[/tex]
and,
As, 128 oz = 1 gallon
So, 4222.9 oz = [tex]\frac{4222.9oz}{128oz}\times 1\text{ gallon}=32.9\text{ gallon}[/tex]
Now we have to determine the cost to buy 125 L of gasoline.
As, the cost of 1 gallon of gasoline = $2.186
So, the cost of 32.9 gallon of gasoline = $2.186 × 32.9
= $71.92
Therefore, the cost of pennies to buy 125 L of gasoline would be, $71.92
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Answer:
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Hope this help
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Answers
Answer: 207.217 amu
Work:
203.973 amu *(0.014) = 2.855 amu
205.974 amu *(0.241) = 49.639 amu
206.976 amu *(0.221) = 45.741 amu
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Explanation:
The average atomic mass has been defined to be the total mass given by the relative abundances and masses of the isotopes. The average atomic mass of lead is 204.359 amu.
What is average atomic mass?The average atomic mass has been given by the masses and relative proportions and abundances of the isotopes of the elements that differ from the mass of the element in the periodic table. It is the average mass given by the sum of the masses and the abundances.
Given,
Abundance of lead-206 = 24.1%
The abundance of lead-207 = 22.1%
The abundance of lead-208 = 53.8%
Mass of lead-206 = 205.974 amu
Mass of lead-207 = 206.976 amu
Mass of lead-208 = 207.977 amu
The average atomic mass is given as:
= (205.974 × 0.241) + (206.976 × 0.221) + (207.977 × 0.524)
= 49.639 amu + 45.741 amu + 108.979 amu
= 204.359 amu
Therefore, 204.359 amu is the average atomic mass.
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