Question

1 Ruund off the following upto three significant figures:
(1) 34.326
(ii) 10.4107
(ii) 0.04597
(iv) 2808
2. Express the following in the scientific notation:
(i) 0.0048
(ii) 234,000
(ii) 8008
3. How many significant figures are present in the following?
(i) 0.0023
(ii) 103.00
(iii) 0,201
4. Calculate the number of moles in the following substance
(1) 2.5g of CuSO..5H2O
(ii) 250ml, 0.02M sodium hydroxide solution
5. Which of the following has greater number of atoms?
(1) lg of CO, (ii) Ig of So,​

Answer 1

Answer:

1) 34,326

Explanation:

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