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Express the following numbers to three s...

Express the following numbers to three significant figures :

A

6.0263

B

2.362

C

sixty thousand

D

`2.861 xx 10^(5)`

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AI Generated Solution

To express the given numbers to three significant figures, we will follow the rules of significant figures as outlined in the video transcript. Here is the step-by-step solution for each part of the question. ### Step-by-Step Solution 1. **First Number: 6.0263** - Identify the significant figures: - The digits 6, 0, 2 are significant (total of 3 significant figures). - The next digit is 6 (which is greater than 5), so we round up the last significant figure (2) to 3. ...
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MODERN PUBLICATION-SOME BASIC CONCEPTS OF CHEMISTRY -REVISION EXERCISES (NUMERICAL PROBLEMS )
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  2. Express the following numbers to three significant figures :

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  4. Carbon and oxygen are known to form two compounds. The carbon content ...

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  5. Calcualte the amount in grams of: (i) 2.5 gram atoms of nitrogen (...

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  6. Calculate (i) number of molecules present in 2.24 dm^3 of carbon dioxi...

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  7. One atom of nickel weighs 9.75 xx 10^(-23) g. Calculate the atomic mas...

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  8. How many molecules are present in 1 kg of hydrogen ?

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  9. Calculate the total charge of a mole of electrons if the electrical ch...

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  10. The volume of a drop of rain was found to be 0.448 ml at N.T.P. How ma...

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  11. Assuming the atomic mass of a metal M to be 56, calculate the empirica...

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  12. Calculate the number of molecules of oxygen in 150 ml of it at 20^(@) ...

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  13. How many moles of hydrogen, phosphorus and oxygen are there in 0.4 mol...

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  14. Calculate the molarity of KOH in solution prepared by dissolving 5.6 g...

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  15. A chemist wishes to prepare 6.022 xx 10^24 molecules of SO(2) accordin...

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  16. A sample of iron has a mass of 1.68 g. Calculate (a) the number of mol...

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  17. 2.5 g of an impure sample of sodium bicarbonate when heated strongly g...

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  18. Which is cheaper 40% HCl at the rate of 6 per kg or 80% H(2)SO(4) a...

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  19. The compound adrenaline is released in the human body in times of stre...

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  20. What volume of concentrated aqueous sulphuric acid which is 98.0% H(2)...

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