Chemistry Homework Help

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Scientific Notation

#### Q. Round the following number to four significant figures and express the result in standard exponential notation: 102.53070 The answer in my textbook is 1.025x10 to the power of 2. Can you tell me why it is to the power of 2 instead of to the power of 4 (my answer).

Solved • Feb 3, 2020

Scientific Notation

#### Q. Write each of the following numbers in exponential or scientific notation. Write each number to two with only one non-zero digit before the decimal point. Example: Use 1.20 x 10^-4 not 0.120 x 10^-3 or 12.0 x 10^-5.

Solved • Jan 28, 2020

Scientific Notation

#### Q. Write each of the following numbers in standard (non-exponential) notation. Do not include a decimal point for numbers greater than 1. Include a zero before the decimal point for numbers less than 1.

Solved • Jan 28, 2020

Scientific Notation

#### Q. (b) Write the following numbers in standard notation. Do not include a decimal point for numbers greater than 1. Include a zero before the decimal point for numbers less than 1. (i) 4.55E4 (ii) 2.30E-5

Solved • Jan 28, 2020

Scientific Notation

#### Q. a) Write the following numbers in scientific notation using the E format shown in Write each number to two decimal places with one non-zero digit before the decimal Example: Use 1.20E-4 NOT 0.120E-3 or 12.0E-5 (i) 0.0712 (ii) 76300

Solved • Jan 28, 2020

Scientific Notation

#### Q. Write each of the following numbers in exponential or scientific notation. Write each number to two dec zero digit before the decimal point. Example: Use 1.20 x 10^-4 not 0.120 x 10^-3 or 12.0 x 10^-5

Solved • Jan 28, 2020

Scientific Notation

#### Q. c. Carry out the following mathematical operation: 96.683 x 57.5 Identify the number of decimal places for the answer of this operation.

Solved • Jan 20, 2020