What is the definition of outermost electron cloud

1 answer:

7 0

The region of negative charge surrounding an atomic nucleus that is associated with an atomicorbital. Hope that helps :)

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Determine the velocity of a 55-kg skier whose kinetic energy is 8900 J

goldfiish [28.3K]

Answer:

Kinetic energy = 1/2mv^2

8900 j =1/2*55*v^2

v^2=8900*2/55

v^2=323.6

v=17.98

Explanation:

4 0

2 years ago

Hello!! I need help please! Please explain how I can identify a percipitate in a reaction! I need help with chemistry ha

antiseptic1488 [7]

Generally speaking a precipitate is something that will form as a result of the reaction. It generally is a solid material.

Sodium and nitrates are soluble so Calcium Phosphate would precipitate out....

5 0

2 years ago

Predict the following product(s) of the following reaction? F2 + KCI →

slega [8]

Answer:

${ \rm{F _{2(g)} + 2KCl _{(aq)} → { \bold{2KF _{(g)} + Cl_{2(g)} }}}}$

Explanation:

» The prediction is 98% correct because single displacement reaction type is highly possible.

This is because Fluorine has is more electronegative than Chlorine in Potassium Chloride. So, it strongly displaces Chlorine from the solution hence forming Chlorine gas.

» The 2% of wrong prediction maybe because of wrong reactant measurements following mole concept chemistry.

If you are asked the observation,

Observation » A green yellowish gas is formed.

This gas is Chlorine gas (Cl2)

5 0

2 years ago

What is the molality of a solution that is obtained by dissolving 2.922 g of NaCl into 1000.0 g of water if the molar mass of Na

never [62]

In order to find molarity, you must first find the number of moles that was dissolved.

Now, Moles = Mass ÷ Molar Mass

⇒ Moles of NaCl = 2.922 g ÷ 58.44 g/mol

= 0.05 moles

∴ the Molarity of the NaCl is 0.05 M [Option 1]

4 0

3 years ago

Why doesn't gravity pull water all the way to the center of the Earth?

ElenaW [278]

It has to do with force

6 0

3 years ago