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Express (6.6xx10^(9))/(5.5xx10^(7)) in s...

Express `(6.6xx10^(9))/(5.5xx10^(7))` in scientific notation.

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The correct Answer is:
`1.2xx10^(2)`
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Express (6.6xx10^(4))+(0.55xx10^(5)) in scientific notation.

Express (6.6xx10^(4))-(0.55xx10^(5)) in scientific notation.

Express (2.2xx10^(4))xx(3.3xx10^(5)) in scientific notation.

Express (1.5xx10^(6))/(2.5xx10^(-4)) in the standard form.

(3^5xx10^5xx25)/(5^7xx6^5)

0.000006723 when expressed in scientific notation,is 6723xx10^(-5) (b) 67.23xx10^(-7) (c) 6.723xx10^(-6)(d) None of these

The number 518,000,000 when expressed in scientific notation,equals 51.8xx10^(6)(b)51.8xx10^(7)(c)5.18xx10^(8)(d)5.18xx10^(9)

Calculate the following a. (6.7 xx 10^(5)) xx (4.6 xx 10^(4)) b. (7.6 xx 10^(7)) xx (3.8 xx 10^(-4)) c. (6.8 xx 10^(-3)) xx (5.2 xx 10^(-4)) d. (6.7 xx 10^(5)) / (4.6 xx 10^(4)) e. (7.6 xx 10^(7)) / (3.8 xx 10^(-4)) f. (6.8 xx 10^(-3)) / (3.8 xx 10^(-4)) g. 7.65 xx 10^(2) + 2.72 xx 10^(3) h. 7.87 xx 10^(-4) - 2.61 xx 10^(-5)

Perform the following calculations upto proper number of significant figures : (i) (1.20 xx 10^(-6)) + (6.00 xx 10^(-5))=? (ii) (2.164 xx 10^(5))^(1//2)=? (iii) (9.13 xx 10^(-2))(7.006 xx 10^(-3))=? (iv) 4.00 xx 10^(-2) + 3.26 xx 10^(-3) +1 xx 10^(-6)=?

The product of 1.7 xx 10^(4) and 12.5 xx 10^(–6) is expressed in the standard form as k xx 10^(n) . The value of (2k + n) is

AAKASH INSTITUTE-SOME BASIC CONCEPTS OF CHEMISTRY -TRY YOURSELF
  1. Express 900.00 in scientific notation.

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  2. Express (2.2xx10^(4))xx(3.3xx10^(5)) in scientific notation.

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  3. Express (6.6xx10^(9))/(5.5xx10^(7)) in scientific notation.

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  4. Express (6.6xx10^(4))+(0.55xx10^(5)) in scientific notation.

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  5. Express (6.6xx10^(4))-(0.55xx10^(5)) in scientific notation.

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  6. Express the following number to two significant figures (i) 5.602792...

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  7. Express the following numbers to three significant figures. (i) 6.02...

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  8. What is the sum of 5.228 kg and 1.02 kg ? Express the result to the ap...

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  9. What will be the length of a metre stick of 5.602 m when 2.8 m portion...

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  10. The mass of a metal block is 5.432 g. If density of metal is 6.4 g//cm...

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  11. Perform the following calculations to the appropriate number of signfi...

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  12. Perform the following calculations to the appropriate number of signfi...

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  13. Convert the following in kilogram. (i) 0.91xx10^(-27)g (Mass of elec...

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  14. Density of an object is 3g//cm^(3). Express it in kg//m^(3).

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  15. When 6.4 g of NaHCO(3) is added to a solution of CH(3)COOH weighing 20...

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  16. If 12.6 g of NaHCO(3) are added to 30.0 g of CH(3)COOH solution, the r...

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  17. 2,75 g of cupric oxide was reduced by heating in a current of hydrogen...

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  18. 12.976 g of lead combines with 2.004 g of oxygen to form PbO(2). PbO(2...

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  19. On analysis it was found that the black oxide of copper and red oxide ...

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  20. Sulphur and oxygen are known to form two compounds. The sulphur conten...

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