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shtirl [24]
3 years ago
15

2. If a person in a wheelchair wanted to get to the second story of a two-story building, would it be easier to

Chemistry
2 answers:
Gnoma [55]3 years ago
8 0

Answer: in my opinion, i would choose the long, shallow ramp because if you had a wheelchair you would be traveling at 100mph!

Explanation:

katen-ka-za [31]3 years ago
7 0

Answer:

The short steep ramp would be much harder because you will have to work more against gravity.

Explanation:

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Which of the following is an indication of a chemical reaction?
vovikov84 [41]

Answer:

All of the above

Explanation:

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2 years ago
At 150°C the decomposition of acetaldehyde CH3CHO to methane is a first order reaction. If the
Crank

The decomposition time : 7.69 min ≈ 7.7 min

<h3>Further explanation</h3>

Given

rate constant : 0.029/min

a concentration of  0.050 mol L  to a concentration of 0.040 mol L

Required

the decomposition time

Solution

The reaction rate (v) shows the change in the concentration of the substance (changes in addition to concentrations for reaction products or changes in concentration reduction for reactants) per unit time

For first-order reaction :

[A]=[Ao]e^(-kt)

or

ln[A]=-kt+ln(A0)

Input the value :

ln(0.040)=-(0.029)t+ln(0.050)

-3.219 = -0.029t -2.996

-0.223 =-0.029t

t=7.69 minutes

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8 0
3 years ago
Why is it difficult to hold and keep liquids like water in your hand? Guys please help
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