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Kruka [31]
4 years ago
13

Which of the following takes place during a double displacement reaction?

Physics
2 answers:
bogdanovich [222]4 years ago
4 0
Double displacement: parts of compounds switch places to form two new compounds

FYI
decomposition: a complex substance breaks down into two or more simple substances

Single displacement: a single substance replaces another substance in a compound

<span>Synthesis: two simple substances combine to form a new complex substance</span>
Rama09 [41]4 years ago
4 0

<u>Answer: </u>The correct answer is parts of compounds switch places to form two new compounds.

<u>Explanation:</u>

Double displacement reaction is defined as the reaction in which exchange of ions takes place to form two different compounds.

Decomposition reaction is defined as the chemical reaction in which a larger molecule breaks down into two or more smaller molecules.

Single displacement reaction is defined as a reaction in which more reactive metal displaces a less reactive metal from its chemical reaction.

Synthesis reaction is defined as the chemical reaction in which two or more smaller molecules combine to form a single larger molecule.

Hence, the correct answer is parts of compounds switch places to form two new compounds.

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What is the average acceleration of a rocket that travels 400m in 5s if it starts from rest?​
Pavel [41]

Answer:

<h2>32m/s^2</h2>

Explanation:

We want to find the acceleration based on the given data

Given

distance s=400m

time t= 5s

u= 0m/s since it started from rest

We apply the following expression

s=ut+1/2at^2

substituting we have

400=0*5+1/2*a(5)^2

400=25a/2

cross multiply

25a=400*2

25a=800

divide both sides by 25 we have

a=800/25

a=32m/s^2

The acceleration is 32m/s^2

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3 years ago
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KE = 1/2 * m * v^2
m = 44
v = 10

KE = 1/2 * 44 * (10)^2
KE = 22 * 100 = 2200 J or B
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Perspective is the evaluation or analysis of something, the way we think.
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4 years ago
(a) two protons in a molecule are 4.50 10-10m apart. find the magnitude of the electric force exerted by one proton on the other
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Answer:

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b) 9.1862 × 10⁻⁴⁶N

c) 8.61 × 10⁻¹¹C/Kg

Explanation:

Ke = 8.99× 109 N.m2 / C2 ,      G = 6.67 × 10-11 N. m2 / kg2

a)  F = Ke . q₁.q₂/r²  

=  (8.99× 109 N.m2 / C2 ) ×(1.60×10⁻¹⁹C)²/(4.50×10⁻¹⁰C)²

= 1. 1365 × 10⁻⁹N

b)  

F = Gm₁m₂/r²

= (6.67× 10⁻¹¹)×(1.67×10⁻²⁷)²/(4.50×10⁻¹⁰)²

= 9.1862 × 10⁻⁴⁶N

The electric force is larger by 8.0497 ×10³⁷ times

c)

if Keq₁q₂/r² Gm₁m₂/r²,

with q₁=q₂ = q,  and m₁ =m₂ = m

Then q/m =\sqrt{G/M} = \sqrt{(6.67 X 10^{-11} } /8.89 X 10^{9}

= 8.61 × 10⁻¹¹C/Kg

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3 years ago
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