AP Chemistry Chapter 1 Quiz (Part 2)

not-available-via-ai

Rules for Rounding #1: In a series of calculations, carry the extra digits through to the final result, then round.

definition

definition

The first two zeroes would be "leading zeros", which means they are there simply to tell where the decimal point is. "Leading zeroes" do not count as significant figures. The non-zero digits (1 and 5 in this case) always count, and so does the "captive zero" in between them. Thus, making this problem have 3 sig figs.

First, look at the number directly to the right of the 3. Since it is less than 5, it gets rounded down to 4.3. DO NOT round from the end of the number.

The two "leading zeroes" do not count as significant figures. And the final zero is considered a "trailing zero", thus it would count since there is a decimal point in this number. The non-zero digits (5 and 8 in this case) would count, and so would the "captive zeroes" in between. Captive zeroes always count as sig figs. This would make 5 sig figs in this number.

definition

5.08in x 2.54cm/1in = 12.9032cm

This rounds to 12.9cm since the limiting term has 3 significant figures.

K= C + 273.15

100 + 273.15 = 373.15 K

definition

(F - 32)(5/9) = C

(212-32)(5/9) = 100

definition

definition

Since the limiting term has no decimal places, the answer will mirror that fact. This makes your answer have NO decimal places, leaving it to be displayed simply as 7.