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3 years ago

I’m confused on question 13

Chemistry

1 answer:

Studentka2010 [4]3 years ago

8 0

C that would be your answer, trying my best (it's a guess) - sorry

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An empty vial weighs 55.32 g. (a) If the vial weighs 185.56 g when filled with liquid mercury (d = 13.53 g/cm3). What i its volu

Tasya [4]

Answer:

a) Volume of vial= 9.626cm3

b) Mass of vial with water = 62.92 g

Explanation:

a) Mass of empty vial = 55.32 g

Mass of Vial + Hg = 185.56 g

Therefore,

$mass\ of\ Hg = 185.56-55.32 = 130.24 g$

Density of Hg = 13.53 g/cm3

$Volume\ of\ vial = Volume\ of\ Hg = \frac{Mass}{Density} \\\\= \frac{130.24g}{13.53g/cm3} = 9.626 cm3$

b) Volume of water = volume of vial = 9.626 cm3

Density of water = 0.997 g/cm3

$Mass\ of\ water = Density*volume = 0.997g/cm3*9.626cm3=9.60 g\\\\Total\ Mass\ of\ vial = Empty\ vial + mass\ of\ water\\= 53.32+9.60= 62.92g$

3 0

2 years ago

Which properties cause chemical reactions? Question options: chemical properties physical properties chemical and physical prope

zhuklara [117]

Chemical properties cause chemical reactions

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2 years ago

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The Oxidation number of iron in the Complexion [Fe(CN) 6]³^- is what?

LUCKY_DIMON [66]

Hence, the magnetic behaviour of the complex is paramagnetic. The oxidation number of the central metal atom: The oxidation number of the metal iron is +3.

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1 year ago

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1. Which combinations of substances resulted in a chemical change?(no answer choices)

Lunna [17]

All chemical reaction between substances results into a chemical change. When two substances just like HCL and NaOH reacts with each other, NaCl means Sodium Chloride salt is formed.

The phenomenon like change in color, change in temperature, release of gas etc when happens ,then it means chemical change has been occurred. e.g

HCl +NaOH ----> NaCl +H2O.

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3 years ago

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When rolling a number cube 500 times, how many times you expect to get a 3?

andreyandreev [35.5K]

Answer:

$\frac{250}{3}$

Explanation:

you can expect to get a 3 (theoretically) 1 time every 6 times you roll. A 1/6 chance.

Here's the equation:

$\frac{1}{6} =\frac{x}{500}$

cross multiply (i think that's what it is called)

500=6x

divide by 6 on both sides:

x= $\frac{250}{3}$ or approx 83 times.

Hope this helps! Lmk if u have more questions <3

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3 years ago