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saveliy_v [14]
4 years ago
11

20 POINTS!!!!

Chemistry
1 answer:
Y_Kistochka [10]4 years ago
8 0
A. neutrons 

Isotopes <span>contain equal numbers of protons but different numbers of neutrons in their nuclei.</span>
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An 80 kg volleyball player lands from a jump and tries to stop her forward motion. The normal contact force exerted by the floor
Paladinen [302]

Answer:

The answer to the question is

The resultant ground reaction force exerted by the floor on the volleyball player's shoes = 2088.06 N

Explanation:

To solve the queston we list out the variables thus

Mass of volley ball player = 80 kg

Normal force exerted on her shoes by the floor N =2000 N

friction force, f, exerted on her shoes backwards = 600 N

The resultant ground reactive force, R, is given by

R² = N² + f² = 2000² + 600² =  4000000 + 360000 = 4360000

Therefore R = √(4360000) =  2088.06 N

The direction of the force = atan (2000/600) = 73.3 ° clocwise or 106.699 ° counter clockwise

3 0
3 years ago
Predict the major and minor products of the following reaction. Name the products using systematic names.CH3CH2CH = CH2+H2O H+--
BartSMP [9]
<h3><u>Answer;</u></h3>

Major product; 2-Butanol ;(CH3CH2CH(OH)-CH3)

Minor product; none

<h3><u>Explanation;</u></h3>
  • Alkenes undergo an addition reaction with water in the presence of a catalyst to form an alcohol. This type of addition reaction is called hydration.
  • For example; in hydration of 2-butene, Water adds across the double bond in a Markovnikov fashion to form 2-butanol

CH3CH2CH=CH2 + H2O (acid catalyst) -----> CH3CH2CH(OH)-CH3

6 0
3 years ago
What characterizes a radioactive atom?
Doss [256]

. Its nucleus is unstable.

4 0
3 years ago
Suppose that you stir a green powder into a clear liquid. The liquid turns green. You leave the room and come back later to obse
statuscvo [17]

It was a mixture bc it settled, and compounds dont do that


4 0
4 years ago
What is the molar mass of CHCl3?<br> 48.47 g/mol<br> 83.92 g/mol<br> 119.37 g/mol<br> 121.39 g/mol
kolbaska11 [484]

119.37 g/mol

<h3>Further explanation</h3>

Relative atomic mass (Ar) and relative molecular mass / molar mass (M)  

the molar mass/molecular mass of a compound : the sum of the relative atomic mass (Ar) of the constituent atoms

M AxBy = (x.Ar A + y. Ar B)  

Atomic weight (Ar) of :

  • C : 12.0107 g/mol  
  • H : 1.00784 g/mol  
  • Cl : 35.453 g/mol  

The molar mass of CHCl₃

\tt CHCl_3=12.0107+1,00784+(35,453\times 3)=119.37~g/mol

8 0
3 years ago
Read 2 more answers
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