An over-the-counter multi-vitamin has 350 mg tablets that are 20% calcium by mass. How many tablets are required for you to take
2 answers:
Answer:
5 tablets are required for you to take a 0.35 g dose of calcium.
Explanation:
The amount of calcium required = 0.35 g
Percentage of calcium by mass in calcium carbonate = 20%
Total mass of 1 tablet of multi-vitamin =350 mg = 0.35 g
let the number of tablet of multi-vitamin be x
Total mass of tablets = x × 0.35
x = 5
5 tablets are required for you to take a 0.35 g dose of calcium.
You might be interested in
Answer : The correct IUPAC name for the compound is, 2,2,4,5-tetramethyl-3-ethylhexane.
Explanation :
The basic rules for naming of hydrocarbons are :
First select the longest possible carbon chain.
The longest possible carbon chain should include the carbons of double or triple bonds.
The naming of alkane is done by adding the suffix -ane, alkene by adding the suffix -ene, alkyne by adding the suffix -yne.
If two or more similar alkyl groups are present in a compound, the prefixes di-, tri-, tetra- and so on are used to specify the number of times of the alkyl groups in the chain.
In the give compound, the longest possible carbon chain has 6 carbon atoms. So, the prefix used will be 'hex-' and also the carbon has single bond between them, so it is an alkane. Four methyl group is present at 2,2,4,5 position of carbon chain and one ethyl group is present at 3 position.
Hence, the correct IUPAC name for the compound is, 2,2,4,5-tetramethyl-3-ethylhexane.
This is some information about the potential energy.
Explanation:
Please follow me...
