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4 years ago

What substance cannot be broken down by chemical change

Chemistry

1 answer:

ki77a [65]4 years ago

5 0

Potassium is the simplest form of matter and therefore can not be broken down by chemical change.

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How can you tell if a compound is a solid, liquid, gas, or aqeous.

Andre45 [30]

aqueous is the colorful one

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3 years ago

What's the chemistry definition of density

Paha777 [63]

Density is defined as the ratio between mass and volume or mass per unit volume.
Source is google

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3 years ago

A 51.24-g sample of Ba(OH)2 is dissolved in enough water to make 1.20 liters of solution. How many mL of this solution must be d

g100num [7]

Answer:

0.40 L

Explanation:

Calculation of the moles of $Ba(OH)_2$ as:-

Mass = 51.24 g

Molar mass of $Ba(OH)_2$ = 171.34 g/mol

The formula for the calculation of moles is shown below:

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

Thus,

$Moles= \frac{51.24\ g}{171.34\ g/mol}$

$Moles= 0.2991\ mol$

Volume = 1.20 L

The expression for the molarity is:

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

$Molarity=\frac{0.2991\ mol}{1.20\ L}=0.24925\ M$

Thus,

Considering

$Molarity_{working\ solution}\times Volume_{working\ solution}=Molarity_{stock\ solution}\times Volume_{stock\ solution}$

Given that:

$Molarity_{working\ solution}=0.100\ M$

$Volume_{working\ solution}=1\ L$

$Volume_{stock\ solution}=?$

$Molarity_{stock\ solution}=0.24925\ M$

So,

$0.100\ M\times 1\ L=0.24925\ M\times Volume_{stock\ solution}$

$Volume_{stock\ solution}=\frac{0.100\times 1}{0.24925}\ L=0.40\ L$

The volume of 0.24925M stock solution added = 0.40 L

6 0

3 years ago

The OH-ion concentration of a blood sample is

Keith_Richards [23]

Answer:

She okeyy

Explanation:

Example 740 are the think free ofıce pH of the blood 740 blood sample iş takipte kal ❣️

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3 years ago

Which compound has the highest melting point? ch3(ch2)14cooh ch3(ch2)10ch=ch(ch2)2cooh ch3(ch2)2ch=ch(ch2)4ch=ch(ch2)4cooh ch3(c

Jlenok [28]

The compound with the highest melting point is CH3 [CH2]14COOH.
This compound has the highest melting point because it has the highest number of CH2 bonds. The melting point of a compound refers to a particular temperature at which that substance changes from a solid to a liquid.

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4 years ago