3 years ago

What characterizes a homogeneous mixture?

Chemistry

1 answer:

Vadim26 [7]3 years ago

4 0

It has the same composition throughout, unlike a heterogeneous which has visibly separate substances

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An ice wedge shattering a slab of shale<br><br> a<br> Chemical Change<br> b<br> Physical Change

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<u>Physical Change</u>

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Sunlight shining through a clear window it’s Jeremy’s face while he does his homework he uses a large wooden wooden block to cov

lidiya [134]

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a blocker?

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just a guess

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Why can iron filings be used to visualize a magnetic field?

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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:

Vesnalui [34]

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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What phase of matter is least common on earth

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Plasma is the least common matter on earth

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