Answer:
COARSE ADJUSTMENT KNOB — A rapid control which allows for quick focusing by moving the objective lens or stage up and down. ... FINE ADJUSTMENT KNOB — A slow but precise control used to fine focus the image when viewing at the higher magnifications. 6.
Coarse adjustment, using the coarse adjustment knobs, raises and lowers the stage more rapidly. Fine adjustment knobs are the smaller knobs and are also used to raise and lower the stage but more slowly and in a more controlled manner under higher magnifications.
Answer:
8.3
Explanation:
pH is the measure of the H+ or H30 (they r the same thing) ions in a solution. it is equal to -log[H+]. [H+]= Molar concentration of H+ ions.
Answer:
By conducting a chemical reaction.
Explanation:
To form a new substance from old ones, you have to allow the old substances to react with each other, forming something different.
The correct answer is (a)
It is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge distributed over the entire ion.
The explanation:
- the bond between oxygen and phosphorus is covalently.
when A covalent bond is a bond in which electrons are shared. \nd the ionic bond, electrons are completely transferred. In this case phosphate ion (PO4)-3 is covalent.
- that's means that the choice C and D don't be the correct answer.
-Additionally, since the charge is on the oxygen atoms due to the bonding with phosphorus, so we can say that the charge is on the entire ion and not just on the phosphorus atom so,the answer B also not the correct answer.
and the correct one is (A)
Answer:
C because 77.0 CsF
Explanation:
That is the correct answer because I have that homework and i got it right