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3 years ago

How many times more basic is a solution with a pH of 10 than a solution with a pH of 8

Chemistry

1 answer:

lina2011 [118]3 years ago

4 0

You may want to ask the questions seperatly more likely for someone to answer

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How many electrons does the oxygen atom need to become stable?

NemiM [27]

Answer:

2 electrons

Explanation:

Oxygen has 6 valence electrons and to be stable it needs 8. That means it needs 2 more electrons to have a full octet.

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3 years ago

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Someone help me out with this brain pop ⚠️

erik [133]

The answer is b because if you’re fan is blowing and you spend it the opposite way, the air will be cooler

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2 years ago

The mass of .10 moles of iron is:

Stels [109]

Answer:

so mass in gram=560grams

Explanation:

number of moles=10moles

molar mass=56grams/moles

mass in gram of Fe=?

as we know that

$number of moles=\frac{mass in gram}{molar mass}$

evaluating the formula

number of moles×molar mass=mass in gram

mass in gram=10moles×56grams/moles

mass in gram=560grams

i hope this will help you :)

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3 years ago

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Calculate the volume in liters of a 0.00231M copper(II) fluoride solution that contains 175.g of copper(II) fluoride CuF2. Be su

Free_Kalibri [48]

Answer:

Volume = 746 L

Explanation:

Given that:- Mass of copper(II) fluoride = 175 g

Molar mass of copper(II) fluoride = 101.543 g/mol

The formula for the calculation of moles is shown below:

$moles = \frac{Mass\ taken}{Molar\ mass}$

Thus,

$Moles= \frac{175\ g}{101.543\ g/mol}$

$Moles_{copper(II)\ fluoride}= 1.7234\ mol$

Also,

Considering:

$Molarity=\frac{Moles\ of\ solute}{Volume\ of\ the\ solution}$

So,,

$Volume =\frac{Moles\ of\ solute}{Molarity}$

Given, Molarity = 0.00231 M

So,

$Volume =\frac{1.7234}{0.00231}\ L$

Volume = 746 L

7 0

3 years ago

Which statement is true of a rock layer that had another rock layer deposited on top of it?

Karo-lina-s [1.5K]

Answer:

second rock...I know it

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3 years ago