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Shtirlitz [24]
3 years ago
12

if a leaf falls from a tree we assume that it is in free fall and not affected by air resistance, how many force vectors does th

e leaf have?
Chemistry
1 answer:
lakkis [162]3 years ago
7 0
Just the force of gravity down. 
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Which of the following experimental observations proved that the idea of matter and mass being evenly distributed in an atom was
Ksenya-84 [330]

A. Less than 1% of the alpha particles went un-deflected through the gold foil.

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3 years ago
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Which of a following elements has the Smallest atomic radius 1. Ge 2. SI 3. Carbon 4. Sn​
Artyom0805 [142]

Answer:

carbon

Explanation:

Atomic radius represents the distance from the nucleus to the outer shell of an element.

8 0
3 years ago
Please show work:<br> Question below
ozzi

Answer:

b) 2.0 mol

Explanation:

Given data:

Number of moles of Ca needed = ?

Number of moles of water present = 4.0 mol

Solution:

Chemical equation:

Ca + 2H₂O     →      Ca(OH)₂ + H₂

now we will compare the moles of Ca and H₂O .

                          H₂O        :        Ca                

                             2           :        1

                             4.0           :       1/2×4.0 = 2.0 mol

Thus, 2 moles of Ca are needed.      

         

3 0
2 years ago
Determine Δngas for each of the following reaction:(b) 2PbO(s) + O₂(g) ⇄ 2PbO₂(s)
Elis [28]

2PbO(s) + O₂(g) ⇄ 2PbO₂(s)

Then Δngas = -1

<h3>What is Δngas?</h3>

The number of moles of gas that move from the reactant side to the product side is denoted by the symbol ∆n or delta n in this equation.

Once more, n represents the growth in the number of gaseous molecules the equilibrium equation can represent. When there are exactly the same number of gaseous molecules in the system, n = 0, Kp = Kc, and both equilibrium constants are dimensionless.

<h3>Definition of equilibrium</h3>

When a chemical reaction does not completely transform all reactants into products, equilibrium occurs. Many chemical processes eventually reach a state of balance or dynamic equilibrium where both reactants and products are present.

Learn more about Equilibrium

brainly.com/question/11336012

#SPJ4

5 0
1 year ago
Hi how are you today well have a great rest of your day
amid [387]

Answer:

I'm well and same to you

Explanation:

6 0
2 years ago
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