Step by step at using microscope

1. have it at the correct sight thing

2. put something smol or something like that underneath the microscopes see through thing

3. look through it and then you can move the sight thing zoom close or far

carry the microscope with two hands, holding the arm and base

put the microscope on the lab table so the arm is facing you

plug the microscope in and turn on the light

turn the nose piece until the low power objective is into place

turn the coarse adjustment knob to move the body tube to its highest position

place your slide onto the stage and under the stage clips so the speciman is in the light

while looking from the side, lower the body tube all the way down using the coarse adjustment knob

while looking into the ocular, turn the coarse adjustment knob to focus

(using the low power objective)

while looking into the ocular, use the fine adjustment knob to focus more sharply

the speciman is in sharp focus on low power

what you have to make sure of before you switch to high power (if needed)

slowly turn the nose piece until the high power objective clicks into place

what to do to switch from low power objective to high power objective

use the fine adjustment knob only

Explanation:

2fe + 3h2so4 -> fe2(so4)3 + 3h2

it is necessary to balance equations in order to get the proper amount of reactants as well as products in order not to make a miscalculation.

you cannot change the subscripts as that would change the substance itself. for instance, diatomic elements such as h2 only have the subscript two when a gas. another example would be so4, if you were to change the subscript, the element would no longer be sulfate.

we change the coefficients instead as that only changes the number of molecules rather than the substance itself.

hope this !