Question
Flame photometer is used in the determination of:
Solution
A photoelectric flame photometer is a device used in inorganic chemical analysis to determine the concentration of certain metal ions, among them sodium, potassium, lithium, and calcium.Â
What will come in the place of question mark (?) in the given expression?
? = (40% of 80% of 6400) ÷ 64
420 ÷ 7 + 140 % of 20 + ? × 13 = 18 × 15
Determine the simplified value of the expression: 12 × 15 - 20 + 15 + 12 - 18 + 3 × 4 + 18.
15% of 1800 + 22 = ?Â
Solve the following:
523 + 523 x 523 ÷ 523
24% of 150% of 500 + 140 = ? × 8Â
[∛(3375/19683  )- ∛(125/1728  )  ] ÷ ∛(64/729)  = ? - 3/8Â
7, 8, 12, 21, 37, ?
What value should come in the place of (?) in the following questions.
336 ÷ 6 ÷ √16 * ? = 1400 ÷ 4