3 years ago

PLEASE HELPPP

Chemistry

1 answer:

rusak2 [61]3 years ago

5 0

Answer; molecule

Explanation:

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Ammonia, NH3 is a common base with Kb of 1.8 X 10-5. For a solution of 0.150 M NH3:

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The concentrations : 0.15 M

pH=11.21

<h3>Further explanation</h3>

The ionization of ammonia in water :

NH₃+H₂O⇒NH₄OH

NH₃+H₂O⇒NH₄⁺ + OH⁻

The concentrations of all species present in the solution = 0.15 M

Kb=1.8 x 10⁻⁵

M=0.15

$\tt [OH^-]=\sqrt{Kb.M}\\\\(OH^-]=\sqrt{1.8\times 10^{-5}\times 0.15}\\\\(OH^-]=\sqrt{2.7\times 10^{-6}}=1.64\times 10^{-3}$

$\tt pOH=-log[OH^-]\\\\pOH=3-log~1.64=2.79\\\\pH=14-2.79=11.21$

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Rank the nonmetals in each set from most reactive (1) to least reactive (3). bromine chlorine iodine

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Answer:

The answer is b

Explanation:

have common properties and are good conductors of heat and electricity. They reflect light and are malleable, and ductile.

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Which two elements have the same number of energy levels with electrons in them?(1 point)

Vladimir79 [104]

Its B) Boron and Oxygen

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In your own words, explain the periodic law.

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States that the properties of elements are periodic or recurring and are correlated to their atomic number.

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A sample of neon gas is at a temperature of 60°C and has a volume of 300 cm. What is the volume of the gas if it is heated to 10

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Answer:

336.04 cm

Explanation:

T1 = 60+273 = 333K

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3 years ago