4 years ago

Juan wants to find out what the crystal structure of a salt grain looks like. What tool should he use in his investigation?

Chemistry

1 answer:

Xelga [282]4 years ago

8 0

The tool Juan will be using is called hard lense

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How many significant figures are in the measurement 40, 500 mg? a) two b) three c) four d) five

emmainna [20.7K]

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The following data are obtained for the decomposition of N2O5 at a certain temperature: 2N2O5(g) ↔ 4NO2(g) + O2(g) Time(s) 0 200

cricket20 [7]

Answer:

K = 0.0003 s⁻¹

Explanation:

The reaction is

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$K[N_{2} O_{5} ]=-\frac{1}{2} \frac{d[N_{2} O_{5} ]}{dt} \\\int\limits^y_x {d[N_{2} O_{5} ]}{} \, =-2k\int\limits^t_0 {dt} \,\\ln[N_{2} O_{5} ]=-2kt+ln[N_{2} O_{5} ]$

a plot is attached

From the plot, the slope is -0.0006

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Download xlsx

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