The illustration shows a roller coaster and indicates four different positions the car might be at as it moves along the track.
Identify at which point in the roller coaster’s journey does it have the least potential energy and explain why. will give brainliest
2 answers:
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The formula for density is:
We know the density for mercury is 13.6 g/mL, and we know the mass of the sample is 53.8 g. Thus, we can plug these numbers into our equation and solve for volume.
The volume is unknown, so we can simply denote it as "x"
multiply both sides by x
The x's cancel out on the right side and you are left with
From here, simply divide both sides of the equation by 13.6 g/mL and solve for x.
Round to 3 significant figures, and your final answer is:
The volume of the sample of mercury was 3.96 mL.
The mole of anything has the same amount of particles and it is equal
.
So a mole of magnesium and a mole of iron have the same number of atoms and it is equal
6.02*10²³
So a mole of magnesium and a mole of iron have the same number of atoms and it is equal
6.02*10²³
Answer:
The correct answer is option e.
Explanation:
Moles of phosphorus pent-oxide :
According to reaction, 1 mole of phosphorus pent-oxide is obtained from 5 moles of oxygen gas.
Then 0.05 mole of phosphorus pent-oxide will be obtained from:
Hence,the correct answer is option e.