A physical property is any property that can be observed without putting the element through a Chemical Reaction.
Assuming that this is a multiple choice question:
Hardness is something you can feel.
Color is something you can see.
Melting point can simply be observed by applying heat.
Therefore, the answer must be “Chemical reactivity”, which conversely has the word “Chemical” in it.
Answer:
Five significant figures.
Explanation:
The given measurement have five significant figures 52301.
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.
Answer:
5.77 g
Explanation:
Amount of calcium sulfide = 0.0800 mol
Molar mass of calcium sulfide = 72.1 g/mol
Mass of calcium sulfide = 0.0800 mol x 72.1 g/mol
= 5.77 g
Count how many protons there is and search up what symbol has this many protons