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Alchen [17]
3 years ago
11

An element is a pure substance that is defined by the number of protons in which is defined as the atomic number

Chemistry
1 answer:
Pani-rosa [81]3 years ago
8 0
If this is a true or false question then the answer is true.
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An example of a physical property of an element is the element’s ability to(1) react with an acid(2) react with oxygen(3) form a
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<span>4: Form An Aqueous Solution 

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What is the structural formula of 2-methylbutan-2-ol (sometimes called 2-methyl-2-butanol)?
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4 0
3 years ago
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Help!!
anyanavicka [17]

I believe this a PV = nRT question whereas

you re write the formula and solve for volume

V = nRT/ P

then you input the values

P= pressure constant

V= x

n = moles = 0.2540

R = gas constant should be 8.314J mol

T = C degrees + 273.15 = K

solve for voume

make sure all units match

and use sig figs!!!!

7 0
3 years ago
You have 345 mL of a 2.5 M NaCl solution. If you boil the water until the volume of the solution is 250 mLwhat will the molarity
HACTEHA [7]

The molarity of the solution will be 3.45 M

<h3>Further explanation </h3>

Dilution is the process of adding a solvent to get a more dilute solution.

The moles(n) before and after dilution are the same.

Can be formulated :

M₁V₁=M₂V₂  

M₁ = Molarity of the solution before dilution  

V₁ = volume of the solution before dilution  

M₂ = Molarity of the solution after dilution  

V₂ = Molarity volume of the solution after dilution

The initial solution

345 mL of a 2.5 M NaCl solution.

M₁=2.5 M

V₁=345 ml

The solution after boiled :

V₂=250 ml

\tt M_2=\dfrac{M_1.V_1}{V_2}\\\\M_2=\dfrac{2.5\times 345}{250}\\\\M_2=3.45~M

5 0
3 years ago
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