Chemical properties are characteristics that change a substance. For example, when a bike comes in contact of water or oxygen it turns into rust which is Fe203. So it came from Iron and changed chemically to rust.
Physical is different because it doesn't change its substance. Example, melting an Ice cube is a physically change because an ice cube is just frozen water and when melted, its still water just not frozen.
For a proton, the charge is represented by +e
For an electron, the charge is represented by -e
The charge of an electron [e] is equal to the - 1.602 * 10^-19 Coulombs
For an ionized atom, the net charge is equal to the sum of charges in the proton and the electron in that atom.
From the question, we are told that, the iron atom has 26 protons and 7 electrons.
The net charge Q = 26 [ +e] + 7 [- e] = +19 e
+19 e = + 19 [1.602 * 10^-19 C] = + 3.04 * 10^-18 C.
Answer:
The answer is
<h2>0.2 g/mL</h2>
Explanation:
The density of a substance can be found by using the formula
<h3>
</h3>
From the question
mass of object = 20 g
volume = 100 mL
Substitute the values into the above formula and solve
That's
We have the final answer as
<h3>0.2 g/mL</h3>
Hope this helps you
Explanation:
The name alkyne which includes the letters "yne" means that there are three bonds attache to the carbon at the specified place. It is an unsaturated hydrocarbon because it contains a triple bond.
For example, 3-heptyne is a seven membered carbon chain with a triple bond at carbon 3.
The formula of 3-heptyne is as follows.