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3 years ago

A sample of neon gas occupies a volume of 2.8L at 1.8 atm. What would its volume be at 1.2 atm?

Chemistry

1 answer:

puteri [66]3 years ago

3 0

Answer:

4.2 L

Explanation:

Use Boyle's Law and rearrange formula.

- Hope this helps! Please let me know if you need further explanation.

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Describe Rutherford's contribution to the atomic model.

Nady [450]

Answer:

Rutherford's experiment, also known as

$\alpha - scattering \: experiment$

supports the existence of neutrons and the nucleus.

Explanation:

In the above diagram, Rutherford was trying to explain his contributions using thin foils of gold and other metals as targets for alpha particles from a radioactive source.

He observed that the majority of particles penetrated the foil either undeflected or with only a slight deflection. But, every now and then an alpha particle was scattered(or deflected) at a large angle..

According to Rutherford, most of the atoms must be empty space. This explains why the majority of alpha particles passed through through the gold foil with little or no deflection. The atoms positive charges, Rutherford proposed are all concentrated in the Nucleus, which is a dense central core within the atom.

Whenever an alpha particle came close to a nucleus in the scattering experiment, it experienced a large repulsive force and therefore a large deflection. Moreover, an alpha particle coming towards a nucleus would be completely repelled and its direction would be reversed. The positively charged particles in the Nucleus are called Protons.

I hope you find this useful... Have a lovely day. 

4 0

3 years ago

What mass of H2SO4 is contained in 60.00 mL of a 5.85 M solution of sulfuric acid

strojnjashka [21]

First, we have to calculate the number of moles of H2SO4 in the solution:

V=60 mL = 0.06 L

c=5.85 mol/L

n=V×c=0.06×5.85=0.351 mol

Then we need to find the molar mass of H2SO4:

2×Ar(H) + Ar(S) + 4×Ar(O) =

=2 + 32 + 64 = 98 g/mol

Finally, we need to find the mass of H2SO4:

m=0.351 × 98 = 34.398 g

5 0

3 years ago

Can someone please help me please dont scroll

Nostrana [21]

Quantitative is anything that is relating to a number value. Think “quantity”

Example:

1. There are 5 ml of water
2. There are 3 beakers
3. It takes 30 minutes for the reaction

Qualitative is about characteristics that can be described

Example

1. The liquid is green
2. The solution turned into a gas
3. Bubbles were produced

4 0

2 years ago

How many steps are required to completely ionize a triprotic acid?

Sauron [17]

H3PO4 + H2O <--> H3O+ + H2PO4- Ka1= ([H3O+][H2PO4-])/[H3PO4]) H2PO4- + H2O <--> H3O+ + HPO4^2- Ka2= ([H3O+][HPO4^2-])/[H2PO4-]) HPO4^2- + H2O <--> H3O+ PO4^3- Ka3= ([H3O+][PO4^3-])/[HPO4^2-]) Ka1 >> Ka2 = almost all the H3O+ is formed in the first step. Ka3 will only happen under very basic conditions.

8 0

3 years ago

Read 2 more answers

Aim- To prepare a true solution of common salt in water, suspension of chalk powder in water and colloidal solution of starch in

Gwar [14]

Answer:

(a) The true solution is homogeneous mixture which cannot be separated by the process of filtration. A true solution is said to be stable and transparent. Three beakers are taken in which 100mL water is added and are labelled as A,B,C.

Explanation:

3 0

3 years ago