1(a) Convert the number 0.0000735 to scientific notation.(b) Round off the number 24.15725 to the hundredths place.(c) Convert the number 5.31 x 10³ from scientific notation to regular number.2a) Take a look at the image, and answer the following questions.234(i) What is the correct length of the red tape?(ii) The number of significant figures in the measurement is(iii) Convert this length to meters(m) and inches(in). Show complete calculations.2b) The actual mass of a glass marble was recorded as 5.3076 g. When a student measuredthe mass three times the results were recorded as 5.2987g , 5.3197 g and 5.2078 gWhich one of the results can be considered accurate and why?3(i) The density of copper is 8.92 g/em'. What is the mass(in grams) of a piece ofcopper which has a length of 3.16 cm, width of 2.74 cm and height of 1.88 cm?

Applying concept of scientific notation and significant figures.

Answered: 1(a) Convert the number 0.0000735 to…

1(a) Convert the number 0.0000735 to scientific notation. (b) Round off the number 24.15725 to the hundredths place. (c) Convert the number 5.31 x 103 from scientific notation to regular number. X

World of Chemistry, 3rd edition

3rd Edition

ISBN:9781133109655

Author:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCoste

Chapter5: Measurements And Calculations

Section: Chapter Questions

Problem 21A

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Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.

Question

1(a) Convert the number 0.0000735 to scientific notation.
(b) Round off the number 24.15725 to the hundredths place.
(c) Convert the number 5.31 x 10³ from scientific notation to regular number.
2a) Take a look at the image, and answer the following questions.
2
3
4
(i) What is the correct length of the red tape?
(ii) The number of significant figures in the measurement is
(iii) Convert this length to meters(m) and inches(in). Show complete calculations.
2b) The actual mass of a glass marble was recorded as 5.3076 g. When a student measured
the mass three times the results were recorded as 5.2987g , 5.3197 g and 5.2078 g
Which one of the results can be considered accurate and why?
3(i) The density of copper is 8.92 g/em'. What is the mass(in grams) of a piece of
copper which has a length of 3.16 cm, width of 2.74 cm and height of 1.88 cm?

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