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Natalija [7]
3 years ago
8

Which question can be answered using the scientific method ?

Chemistry
1 answer:
anyanavicka [17]3 years ago
8 0
The correct answer is D because the the rest will have different answers depending on the person you ask. D can be proven with facts by research
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Acids are and can destroy your skin and bones
sleet_krkn [62]

Answer:

This is true.

Explanation:

5 0
2 years ago
Kyle travelled a total of 762 miles during his vacations to the United States. How many kilometers did he travel?
Mashutka [201]
762 miles = 1226.32 kilometers
you multiply the miles by 1.609 to get the kilometers
4 0
3 years ago
A particular type of fundamental particle decays by transforming into an electron e- and a positron e . Suppose the decaying par
Bezzdna [24]

Answer:

Check the explanation

Explanation:

Lorenz force exerted on electron by magnetic field is

F=e*v*H, where e=1.602E-19 C, H=3.64E-3 T, v is speed of electron;

? meanwhile Lorenz force is centripetal force F=m*v^2/r, where mass of electron m=9.11E-31 kg, r is radius of the path of electron;

? therefore F=F; e*v*H = m*v^2/r; eH=m*(v/r), hence

v/r = eH/m =w is angular speed of electron, hence

T=2pi/w =2pi*m/(eH) is period of rotation of electron;

e- and e+ starting at the same point are moving in the same circular path and in opposite directions, and should meet in T/2 time;

T/2 = pi*m/(eH) = pi*9.11E-31 /(1.602E-19 *3.48E-3) =5.13E-9 s;

5 0
3 years ago
How do I answer question 4
lidiya [134]

One box is 120g.

mass of 126 boxes = 126*120 = 15120 g

(note: used an additional significant figure when first digit is a 1, so four significant figures)

Using the conversion 1 lb. = 453.6 g/lb

15120g = 15120 g / (453.6 g/lb) = 15120 g * (1/453.6) lb/g = 33.3 lbs. (3 significant figures)

3 0
3 years ago
Given the following data, determine the order of reaction with respect to H2.
alex41 [277]

Answer:

First-order with respect to hydrogen.

Explanation:

Hello!

In this case, considering that the rate law of this reaction can be expressed via:

r=k*p_{H_2}^m*p_{ICl}^n

If we want to know m, the order of reaction with respect to hydrogen, we need to relate the experiments 1 and 3 in order to get rid of the pressure of ICl:

\frac{r_1}{r_3} =\frac{k*p_{H_2,1}^m*p_{ICl,1}^n}{k*p_{H_2,3}^m*p_{ICl,3}^n}

Thus, we plug in the given rates, and pressures to get:

\frac{1.34}{0.266} =\frac{k*250^m*325^n}{k*50^m*325^n}

So we can cancel wout k and 325^n:

\frac{1.34}{0.266} =\frac{250^m}{50^m}

Next we solve for m, the order of reaction with respect to hydrogen:

5.04 =5^m\\\\log(5.04)=m*log(5)\\\\m=\frac{log(5.04)}{log(5)} \\\\m=1.0

It means it is first-order with respect to hydrogen.

Regards!

7 0
3 years ago
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