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3 years ago

12

a boy on a skateboard is pushed down the sidewalk by a friend. The skateboard rolls for a while but eventuallycomestoasto. Whatf

orceiscausingtheskateboardtostoprolling?

2 answers:

Mariulka [41]3 years ago

7 0

The Cause Of The Stop to The Skateboard's Rolling Is Friction.

azamat3 years ago

4 0

Friction between the sidewalk and the wheels of the skateboard

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matrenka [14]

Explanation:

The problem here is to find the atomic number of each of the element given.

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1 year ago

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Please use the values in the resources listed below instead of the textbook values. Under certain conditions the decomposition o

Alex787 [66]

Answer:

The rate equation for this reaction:

$R=k[NH_3]^0$

Explanation:

Decomposition of ammonia:

$2NH_3\rightarrow N_2+3H_2$

Rate law of the can be written as;

$R=k[NH_3]^x$

1) Rate of the reaction , when $[NH_3]=2.0\times 10^{-3} M$

$1.5\times 10^{-6} M/s=k[2.0\times 10^{-3} M]^x$ ..[1]

2) Rate of the reaction , when $[NH_3]=4.0\times 10^{-3} M$

$1.5\times 10^{-6} M/s=k[4.0\times 10^{-3} M]^x$ ..[2]

[1] ÷ [2]

$\frac{1.5\times 10^{-6}M/s}{1.5\times 10^{-6}M/s}=\frac{k[2.0\times 10^{-3}M]^x}{k[4.0\times 10^{-3}M]^x}$

On solving for x , we get ;

x = 0

The rate equation for this reaction:

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