<span>Drill bits are attached to power drills to make holes. Drill bits are made of carbon-steel because they’re hard and resistant to corrosion. However, it is not only limited to carbon-steel. There are also other materials that are used for drill bits such as high speed steel, titanium coated steel and the like. The bodies and handles of power drills are made of polyethylene because they’re good insulators. </span>
Answer:
The statement is false
Explanation:
Interstellar clouds are not primarily composed of nitrogen and oxygen. Interstellar clouds are generally an made up of gas, plasma, and dust in our and other galaxies.
A. 2
The dash represents two electrons
The concentration of hydroxide ion in household of ammonia that has a ph of 11.50 is calculated as follows
as we well know Ph +POh= 14
POh is therefore=14 -11.50= 2.5
POh is calculated as follows
POh= -log(-OH)= 2.5
-OH concentration is therefore = 10^-2.5 =3.162 x10^-3
