Answer:
147,558,601 sqkm
Explanation:
The earth is spherical in shape;
area of sphere = 4πr²
if 70.8% is covered by water then 100-70.8 will be land,
= 29.2%
area occupied by land = (29.2/100) * 4πr²
= 0.292*4*3.142*(6371)²
=147,558,601 sqkm
A reagent is a compound that is used for the detection of the absence or presence of another substance.
<h3>What are reagents?</h3>
Your information is incomplete as the available reagents aren't given. Therefore, an overview will be given.
Reagents are the integral part of a chemical reaction as they facilitate a reaction. A reagent is usually used tests.
Some typical examples of reagents include Tollens reagent, Fehling's reagent, Million's reagent, etc.
Learn more about reagents on:
brainly.com/question/5601219
Answer:
The answer is
<h2>7.39 mL</h2>
Explanation:
The volume of a substance when given the density and mass can be found by using the formula
From the question
mass of Mercury = 100 g
density = 13.54 g/mL
The volume of the metal is
We have the final answer as
<h3>7.39 mL</h3>
Hope this helps you
Full electron configuration of barium: 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 6s2