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 a 0.35 g dose of calcium?

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.

c. because step up transformer steps up the input voltage i.e increases the input voltage  

the number of turns are greater on the secondary side of step up transformer  

transformer does not handle dc current

> b takes place in the gas phase in an isothermal tubular reactor. the feed is one mole of a per one mole of c, an inert. the entering temperature and pressure are 427°c and 10 atm, respectively. the gas constant r = 0.08206 atm · l/mol · k.