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podryga [215]
3 years ago
8

In a simple model of the hydrogen atom, the electron revolves in a circular orbit around the proton with a speed of 2.2×106m/s.

Chemistry
1 answer:
jeka57 [31]3 years ago
4 0
 we need more information to help you [email protected] me when you provide more.I will be glad to help!
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What is hydrolysis?​
harkovskaia [24]

Answer:

Hydrolysis is any chemical reaction in which a molecule of water ruptures one or more chemical bonds.

Explanation:

Example:

Dissolving a salt of a weak acid or base in water is an example of a hydrolysis.

8 0
4 years ago
Read 2 more answers
What is the major difference between chemical and physical changes?
viktelen [127]
<span>C. New substances are always produced in chemical changes, which is not the case with physical changes. For example, when you cut wood into smaller pieces you still have wood in the end. But, with a chemical change you change the substance's whole composition. For example when you add two hydrogen's to one oxygen you have water and it can't break down from that. </span><span />
5 0
3 years ago
What does a mole of iron weigh
r-ruslan [8.4K]

As the atomic mass of iron is 55.847u

We say that it is the mass of one mole of iron.

By formula it can be find by

No.of mole=mass in g/molar mass

Mass in gram = no.of mole x molar mass

No.of mole =1

Molar mass = 55.847g

Mass in gram = 1x55.847

= 55.847g of Fe

3 0
4 years ago
You have a hard glass flask that you plug up with a stopper at room temperature (25 C) and an internal pressure of 1 atm. If you
liubo4ka [24]

Answer:

pressure of 0atm

Explanation:

5 0
4 years ago
Please help due in 5 min. I need this to be done or my grade will drop from a 96 to a 32.
ratelena [41]

Answer:

E = 3.035× 10-¹⁹J = 1.9eV

f = 4.58 × 10¹⁴Hz

Explanation:

wavelength = 6.55 × 10-⁷m

c = 3 × 10⁸m/s

f = ?

E = ?

a) f = c/wavelength

f = 3 × 10⁸/6.55 × 10-⁷

f = 4.58 × 10¹⁴Hz

b) E = hc/wavelength

E = 6.626×10-³⁴ × 3 × 10⁸/ 6.55 × 10-⁷

E = 3.035 × 10-¹⁹J

1ev = 1.6 × 10-¹⁹J

Therefore E = 3.035/1.6 = 1.9eV

3 0
3 years ago
Read 2 more answers
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