3 years ago

Which statement below is not true?

Chemistry

1 answer:

Verizon [17]3 years ago

7 0

Hi I believe the answer is B
Hope this helps you

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What is the pH of a solution that contains 0.003 M HBr?* O 1.0 O 2.5 O 5.8 O 11.5

maxonik [38]

Answer:

pH = 2.5

Explanation:

Given data:

Concentration of HBr = 0.003 M

pH of solution = ?

Solution:

Formula:

pH = -log[H⁺]

by putting values,

pH = -log [ 0.003]

pH = 2.5

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3 years ago

When people smoke, carbon monoxide is released into the air. In a room of volume 70 m3, air containing 5% carbon monoxide is int

KonstantinChe [14]

Answer:

$\frac {dQ}{dt}=0.0001-\frac {Q}{70}\times 0.002$

Explanation:

Given that the volume is $70\ m^3$

The air flows (F) at the rate of $0.002\ m^3/min$ . The concentration of carbon monoxide in the air is 5%.

Let Q be the amount of the carbon monoxide present in the room at time t. then,

$\frac {dQ}{dt}=Rate\ of\ Q_{in}-Rate\ of\ Q_{out}$

Also,

$Rate\ of\ Q_{in}=5\%\ of\ 0.002=0.0001$

$Rate\ of\ Q_{out}=\frac {Q}{70}\times 0.002$

Thus,

$\frac {dQ}{dt}=0.0001-\frac {Q}{70}\times 0.002$

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4 years ago

How you think and feel affects the way you behave. True False

Vika [28.1K]

Answer:

True

Explanation:

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3 years ago

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KengaRu [80]

Answer:

option C

Explanation:

hope it helps u

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1.36g H2 is allowed to react with 10.1g N2 producing 2.05g NH3 What is the theoretical yield in grams for this reaction under th

vladimir2022 [97]

here's the answer to your question

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3 years ago