Answer:
The volume of a ball that is 24 cm across is :
d). v = four-thirds pi 12 cubed
Explanation :
Ball is a sphere and volume of sphere is given by :
r = radius of ball
r = 12 cm
Volume is :
A block of aluminum occupies a volume of 15.0 mL and weighs 40.5 g. What is its density? Answer in g/mL.
1 answer:
Answer:
The answer is
<h2>2.7 g/mL</h2>Explanation:
The density of a substance can be found by using the formula
From the question
mass of aluminum = 40.5 g
volume = 15 mL
Substitute the values into the above formula and solve for the density
We have
We have the final answer as
<h3>2.7 g/mL</h3>Hope this helps you
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Answer: 125 g
Explanation:
To calculate the moles :
The balanced reaction is:
According to stoichiometry :
1 mole of require = 3 moles of
Thus 1.30 moles of will require=
of
Mass of
Thus 125 g of will be needed to burn 36.1 g of