Distillation is the first step in the refining of petroleum.
Fluorine is identified as the most reactive nonmetal and the most electronegative element in the periodic table, making it the strongest oxidizing agent.
Caesium is the most reactive metal in the periodic table, so much that working with this metal often ends in explosions!
Naked lights: lit candles, smoking a cigarette, carrying a box of matches are,<span> prohibited, as they could ignite any methane gas in pockets of the mine.</span>
Answer:
a) 7
b) 4
c) 1
d) 4
Explanation:
Significant figures:
All non-zero digits are consider significant figures like 1, 2, 3, 4, 5, 6, 7, 8, 9.
Leading zeros are not consider as a significant figures. e.g. 0.03 in this number only one significant figure present which is 3.
Zero between the non zero digits are consider significant like 104 consist of three significant figures.
The zeros at the right side e.g 2400 are also significant. There are four significant figures are present.
A) 34.50698 g
In this measurement there are 7 significant figures.
B) 30.00 mL
There are 4 significant figures.
c) 0.0008 g
There is only one significant figure which is 8.
d) 125.0 °C
There are 4 significant figures.