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tangare [24]
2 years ago
8

What are 2 ways microscopes have changed and improved from the 16th century to present day?

Chemistry
1 answer:
Ivan2 years ago
5 0

Answer:

Glass and lens making have improved, and electronic features for microscopes have become available

Explanation:

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What is the formula mass of ferric sulphate, Fe2(SO4)3?
telo118 [61]
It would be 399.88 g/mol.
3 0
3 years ago
Consider the structures of benzaldehyde and benzyl alcohol. Benzene ring with a CH2OH attached Benzene ring with an aldehyde gro
damaskus [11]

Answer:

no equivalent peak, upfield between 0 and 3 ppm

Explanation:

NMR stands for nuclear magnetic resonance. It is a spectroscopic technique that is used for observing the local magnetic fields around an atomic nuclei. It is used to study the chemical, physical and biological properties of the matter.

In the context, the structures of the benzaldehyde and the benzyl alcohol are distinguished by the proton NMR. The hydrogen atom of aldehyde appears downfield between 9 and 11 ppm and also there is no equivalent peak for the alcohol.

The methylene hydrogens will only be significant upfield between the 0 and 3 ppm peak between the given structures.  

5 0
2 years ago
Is gold a compound or an element
timurjin [86]
Gold is an element (Au) you can identify it on a periodic table
3 0
3 years ago
13. The type of chemical bond that forms between oppositely charged ions is aln) a. covalent bond.
Georgia [21]

Answer:

IONIC BOND

Explanation:

the force between oppositely charged IONS is and IONIC BOND

6 0
2 years ago
How many molecules are in 2NaO? please someone help i dont know this :')​
Lena [83]

Answer:

One molecule

Explanation

But there is three different atoms forming this one NaOH. The three atoms are Na, O and H, that is one sodium, one oxygen, and one hydrogen.

8 0
3 years ago
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