The answer is 6.1*10^-3 atm.
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a square boat made from iron has overall dimensions of 2.00 cm x 11.0 cm x 11.0 cm. it has a mass of 213 g. what is its density
2 answers:
Answer: Density of the boat will be
Explanation: Density of a substance is calculated using the formula:
.....(1)
Here, Dimensions of a boat is given, we can calculate the Volume using:
Volume = length × breadth × height
Dimensions are 2.00cm × 11.00cm × 11.00cm
Volume = 2cm × 11cm × 11cm =
Mass of the boat = 213 grams
Putting values in equation 1, we get
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Answer:
324.18 g/mol
Explanation:
Let the molecular mass of the antimalarial drug, Quinine is x g/mol
According to question,
Nitrogen present in the drug is 8.63% of x
So, mass of nitrogen =
Also, according to the question,
2 atoms are present in 1 molecule of the drug.
Mass of nitrogen = 14.01 amu = 14.01 g/mol (grams for 1 mole)
So, mass of nitrogen = 14.01×2 = 28.02
These 2 must be equal so,
solving for x, we get:
<u>x = 324.18 g/mol</u>
Explanation:
Molecules of compounds are are compounds composed two or more than two different elements.
Molecules of an elements are made up two or more than two numbers of same type of atoms
(a)
It is compound composed of sulfur and oxygen element.
(b)
It is a molecules of a single element made up of 8 sulfur atoms.
(c) Cs
It is a symbol of an element named cesium.
(d)
It is compound composed of nitrogen and oxygen element.
(e) O
It is a symbol of an element named oxygen.
(f)
It is a molecule of a single element made up of 2 oxygen atoms.
(g)
It is a molecule of a single element made up of 3 oxygen atoms.
(h)
It is compound composed of carbon and hydrogen element.
(i) KBr
It is compound composed of potassium and bromine element.
(j) S
It is a symbol of an element named sulfur.
(k)
It is a molecule of a single element made up of 4 phosphorus atoms.
(l) LiF
It is compound composed of lithium and fluorine element.