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solniwko [45]
3 years ago
6

Explain why the invention of the microscope was important in the study of cells

Chemistry
2 answers:
Brrunno [24]3 years ago
8 0
It brought us closer to a world that we otherwise wouldn't be able to see. We can now study and observe cells and other micro molecules.
Tpy6a [65]3 years ago
6 0
The invention of the microscope was important to study the cell because it allowed the cells to be viewed due to the power of magnification. without a microscope we would not know all that we do know about the cell. <span />
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You are required to prepare 500 ml of a 6.00 M solution of HNO3 from a stock solution of 12.0 M. Describe in detail how you woul
andriy [413]

Answer: 250 ml of stock solution with molarity of 12.0 M is measured using a pipette and 250 ml of water is added to volumetric flask of 500 ml to make the final volume of 500 ml.

Explanation:

According to the dilution law,

C_1V_1=C_2V_2

where,

C_1 = concentration of stock solution = 12.0 M

V_1 = volume of stock solution = ?

C_2 = concentration of diluted solution= 6.00 M

V_2 = volume of diluted acid solution = 500 ml

Putting in the values we get:

12.0\times V_1=6.00\times 500

V_1=250ml

Thus 250 ml of stock solution with molarity of 12.0 M is measured using a pipette and 250 ml of water is added to volumetric flask of 500 ml to make the final volume of 500 ml.

8 0
3 years ago
Which one is the catalyst?
yan [13]

Answer:

the catalyst is the two gray dots

5 0
3 years ago
Structure of isobutyl formate
Aliun [14]

Answer:

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Explanation:

4 0
3 years ago
How does silicon dioxide become a covalent bond. (explain)
tatuchka [14]
Silicon dioxide is SiO2.  Silicon has 4 valence electrons, while each oxygen has 6 valence electrons.  This can be shown as 
     **             *                   *
**  O *       *  Si   *        *   O  **
      *               *                 **
At points where there is one valence electron, represented by a lone *, the electrons will be 'shared' between the atoms.  This will make silicon dioxide appear as
   **           *--------------- *
**  O *--*  Si   * ------ *   O  **
      *------- *                 **
, as the lines with no arrows indicate that each electron moves between the atoms, and does not stay with one forever.
4 0
3 years ago
I need help with Hess law
ICE Princess25 [194]

Answer:

alright

Explanation:

Hess law is  the enthalpy change for a reaction that is carried out in a series of steps is equal to the sum of the enthalpy changes for the individual steps. Consistent with the law of conservation of energy. Starting and final conditions must be the same.

6 0
3 years ago
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