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3 years ago

Which of the following chemical formulas shows an ionic compound?

Chemistry

2 answers:

sveticcg [70]3 years ago

8 0

C. NaCl
sodium chloride is made up of metals and non metals

harina [27]3 years ago

4 0

Answer:

NaCI

Explanation: I TOOK THE TEST

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Are new atoms made during a chemical reaction?

KATRIN_1 [288]

Answer:yes

Explanation:depending on the chemical properties and amount of the chemical and the state of matter and amount of mass

8 0

2 years ago

Find the boiling point temperature at 760 torr of an isomer of octane, c8h18, if its enthalpy of vaporization is 38,210 j mol-1

mixas84 [53]

According to Clausius-Clayperon equation,

$ln(\frac{P_{1} }{P_{2} }) = \frac{delta H_{vap} }{R} (\frac{1}{T_{2} }-\frac{1}{T_{1} } )$

$P_{1}$ is the vapor pressure at boiling point = 760 torr

$P_{2}$ is the vapor pressure at T_{2} =638.43 torr

Temperature $T_{2} = 110.0^{0}C + 273 = 383 K$

Δ $H_{vap} = 38210 J/mol$

Plugging in the values, we get

$ln(\frac{P_{1} }{P_{2} }) = \frac{delta H_{vap} }{R} (\frac{1}{T_{2} }-\frac{1}{T_{1} } )$

ln $\frac{760 torr}{638.43 torr} =\frac{38210 J/mol}{8.314 J/(mol.K)} (\frac{1}{383 K}-\frac{1}{T_{1} }$

$T_{1} = 389 K$

Therefore, the boiling point of octane = 389 K - 273 = $116^{0}C$

7 0

3 years ago

Which subatomic particle plays the greatest part in determining the properties of an element?

Ostrovityanka [42]

The subatomic particle that plays the greatest role in determining the physical and chemical properties of an element is the electron. The electron has symbol e− or β− with a negative elementary electric charge. Thank you for posting your question here. I hope the answer helps.

8 0

3 years ago

Read 2 more answers

True or False.There is a chemical difference between the gaseous and liquid state of the same substance.

Diano4ka-milaya [45]

I think the The answer is true

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3 years ago

How many covalent bonds are there in one molecule of carbon dioxide, CO2?

Nutka1998 [239]

It would be two because there’s 1 Carbon and 2 oxygen