Significant Figures/Order of Operation Workshop I.
How many significant figures are in each of the following numbers?
1) 5.40
7) 1.2 x 10
13) 75 grams
2) 210
8) 0.00120
14) 0.0005
3) 801.5
9) 0.0102
15) I m= 10 km
4) 1,000
10) 9.010 x 10
16) 4 monkeys
5) 101.0100
11) 2,370.0
17) 4300
6) 23
12) 340
18) 546010
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Significant figures are as follows:

zero before (0.12 = 3 sig fig)

zero trapped (1.02 = 3 sig figs, or 0.012 = 3 sig figs)

zero on the end for whole number (120 = 2 sig figs)

zero on the end for decimal (1.20 = 3 sig figs)

Here are the first couple of answers:

1. 3

7. 2

13. 2

2. 2

8. 4

the correct answer is b. a strong acid completely dissociates to its ions when dissolved in water. completely dissociates to and ions. a is incorrect because does not fully ionize to and ions and some remain as the compound . c and d are incorrect because, and do not fall into the category of bronsted lowry acids. a bronsted lowry acid is a proton donor and since both molecules do not have a proton to donate they are not bronsted lowry acids. likewise,   if we use the lewis acid definition, they cannot be acids. a lewis acid is an electron pair acceptor. both and have a complete octet so can not accept any electrons which disqualifies them as acids.

answerca air mass;