3 years ago

Which compound contains bonding with the highest electronegativity difference? CH4 NH3 KF C

Chemistry

1 answer:

mart [117]3 years ago

7 0

<span>FeCl3

Hope this helps</span>

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What is the molarity of 392 mL of solution that contains 0.47 mol NaCl?

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Answer: 1.2 M

Explanation:

Given that:

volume of NaCl = 392 mL

Convert volume in milliliters to liters

(since 1000 mL = 1L

392 mL = 392/10000 = 0.392 L)

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Amount of moles of NaCl = 0.47 moles

Recall that the concentration of a solution depends on the amount of solute dissolved in a particular volume of solvent.

I.e Concentration in mol/L =

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= 0.47 moles / 0.392 L

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Note that molarity is the same as concentration in moles per litres.

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3 years ago

A sample of CH4 is confined in a water manometer. The temperature of the system is 30.0 °C and the atmospheric pressure is 98.70

kakasveta [241]

Explanation:

The given data is as follows.

$P_{atm}$ = 98.70 kPa = 98700 Pa,

T = $30^{o}C$ = (30 + 273) K = 303 K

height (h) = 30 mm = 0.03 m (as 1 m = 100 mm)

Density = 13.534 g/mL = $13.534 g/mL \times \frac{10^{6}cm^{3}}{1 m^{3}} \times \frac{1 kg}{1000 g}$

= 13534 $kg/m^{3}$

The relation between pressure and atmospheric pressure is as follows.

P = $P_{atm} + \rho gh$

Putting the given values into the above formula as follows.

P = $P_{atm} + \rho gh$

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