Answer:
Food storage. The food reserves can be drawn upon to ensure good development of a flower stalk and seeds.
Explanation:
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The mass of barium occupying 50 cubic centimeters of volume is 181 grams.
Explanation:
Given :
The denisty of barium is
To find;
The mass of a sample of barium that occupies a space of
Solution:
- The mass of barium = M
- The volume of barium = V =
- The density of the barium = D =
The density of the substance is given as:
181 grams is the mass of barium occupying 50 cubic centimeters of volume.
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Answer:
Molar mass of Al2O3 = 101.961276 g/mol
This compound is also known as Aluminium Oxide.
Convert grams Al2O3 to moles or moles Al2O3 to grams
Molecular weight calculation:
26.981538*2 + 15.9994*3
Percent composition by element
Element Symbol Atomic Mass # of Atoms Mass Percent
Aluminium Al 26.981538 2 52.925%
Oxygen O 15.9994 3 47.075%
Explanation:
Percent composition by element
Element Symbol Mass Percent
Aluminium Al 52.925%
Oxygen O 47.075%
Because 25% is half of 0.5 and the half life of is given as 5,715, the time it takes to reach this amount should just be double the half life: 11430 years.
However, in other cases the problem may not have easy numbers, so below is a more mathematical approach.
The half life formula is .
Solving for t gives:
Given information:
Plug in given values and solve for t.
With correct significant figures, this would be 11000 years.
Answer:
Magnesium Ion
Explanation:
This is a Magnesium ion. There are 12 protons from the magnesium atom. There are 10 electrons because 12-2=10. There are 12 neutrons because 24-12=12