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Troyanec [42]
4 years ago
8

What so important about a microscope in science

Chemistry
1 answer:
il63 [147K]4 years ago
5 0
Microscopes help us see things we couldn't see regularly. like atoms.  
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What is chemical symbol for potassium
Vinvika [58]

Answer:

K is the symbol for potassium

4 0
3 years ago
Read 2 more answers
A well-known scientist testifies that she believes a piece of evidence is accepted by science. The judge rules that the evidence
notsponge [240]

Answer:

The correct answer is C:

Kumho Tire Co. Ltd V. Daubert

Explanation:

In this case, the appellant (Daubert) has sued Kumho Tire Co. Ltd (the defendant) when 3 months prior the right rear tyre of his car exploded while the car was in motion killing a passenger and injuring others severely.

The appellant employed the services of an expert who had worked for 10 years with Michelin to give his opinion as having studied the attributes of the tire technology.  

In a counter-argument, the defendant rather than dispute the opinion of the expert urged the court to exclude it as evidence because his methodology didn't conform to the requirements of the Law as given in Rule 702 of the Federal Rules of Evidence.

True to the defendants' position, the Law by the ruling in Daubert v Merrell Dow Pharmaceuticals required that for the opinion to count, it had to be scientifically correct. It was hence excluded as evidence in the case.

Cheers!

5 0
4 years ago
Suppose you need 0.12L of a 0.13M solution of NiCl2, but all you have is a solution that is a solution that is 0.23M. What volum
topjm [15]

- 0.05 L needs to be added to the original 0.12 L solution in order to dilute it from 0.13 M to 0.23 M.

The dilution problem uses the equation :

M_aV_a= M_bV_b

The initial molarity (concentration) M_a = 0.13 M

The initial volume V_a = 0.12 L

The desired molarity (concentration) M_b = 0.23 M

The volume of the desired solution V_b = ( 0.12 + x L )

Substituting values in above equation;

(0.13 M ) (0.12 L) = (0.23 M ) (0.12 L + x L)

0.0156 M L = 0.0276 M L + 0.23 x M L

- 0.012 M L = 0.23 x M L

x = - 0.05

Therefore, - 0.05 L needs to be added to the original 0.12 L solution in order to dilute it from 0.13 M to 0.23 M.

Learn more about molarity here:

brainly.com/question/26873446

#SPJ4

3 0
2 years ago
The compound magnesium nitrate has the formula Mg(NO3)2.
Ludmilka [50]

Explanation:

Answer

Open in answr app

Correct option is

C

148

1 atom of Mg=1x24=24

2 atom of N=2x14=28

6 atom of O=6x16=96

Total mass=148

4 0
3 years ago
Dan states that a certain layer of the sun is like the brightest street lamp in a city. Which layer of the sun is Dan referring
sdas [7]

Answer:

He is referring to the chromosphere

Explanation:

8 0
4 years ago
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