3 years ago

Find the density of a substance with a mass of 45 grams and a volume of 9

Chemistry

1 answer:

Over [174]3 years ago

6 0

Density = mass / volume

Density = (45g) / (9 [volume units])

Density = 5g / [volume unit]

There was no specification on the units of volume. However, whatever it may be, just replace the square brackets with the value and your units will be correct.

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The rate constant for the second-order reaction: 2NOBr(g) → 2NO(g) + Br2(g) is 0.80/(M · s) at 10°C. Starting with a concentrati

a_sh-v [17]

Answer : The concentration of NOBr after 95 s is, 0.013 M

Explanation :

The integrated rate law equation for second order reaction follows:

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where,

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Now put all the given values in above equation, we get:

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What is the speed of light of an orange light with a wavelength of 600nm and a frequency of 5.00x1014?

vovangra [49]

Answer:

3 × 10^8 m/s

Explanation:

The wavelength, can be calculated by using the following formula;

λ = v/f

Where;

λ = wavelength (m)

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According to the provided information in this question, λ = 600nm i.e. 600 × 10^-9m, f = 5.00 x 10^14 Hz

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2 years ago

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