By placing the steel wool in a jar with plenty of oxygen and water, you start a chemical reaction. The iron and the oxygen react to form a new reddish-brown substance, called iron oxide or rust.
Pharmaceutical compounding (done in compounding pharmacies<span>) is the creation of a particular 1 History; 2 </span>Roles<span> These </span>ancient<span> compounders </span>produced<span> the first oils from plants and animals. The compounding </span>pharmacist<span> often extracted these crude </span>drugs<span> using water or alcohol to form extracts,</span>
Q = mcΔt
Q = 50 g x 4.184 J/g°c (100 - 20)°C
Q = 16736 J
The students can determine which of the solutions contains salt through the conductive tester.
<h3 /><h3>What is an ionic solution?</h3>
It is a solution containing ions are atoms that have gained or lost electrons to acquire a positive (lost electron) or negative (gained electron) charge.
An ionic solution would be able to conduct electricity whereas the covalent would not so if you have a conductivity tester which is available in most labs.
The students can distinguish between the 2 solutions through the conductive tester.
Learn more about the ionic solution here:
brainly.com/question/14275722
#SPJ1
Answer:
3 atoms of O
8.57g
Explanation:
The problem here is to find the mass of oxygen in the compound and the number of atoms of oxygen.
The formula of the compound is:
NaHCO₃;
Here we have:
1 atom of Na
1 atom of H
1 atom of C
3 atoms of O
So there are 3 atoms of O
To find the mass of oxygen , we use the molar mass of oxygen;
Molar mass of oxygen = 16g/mol
Mass of oxygen = 
x 15 = 8.57g
