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dlinn [17]
4 years ago
8

The process for the conversion of a liquid to gas is called

Chemistry
1 answer:
Diano4ka-milaya [45]4 years ago
4 0

lol what the heck dude it's eVaPoRaTioN

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What is one way to speed up a chemical reaction without otherwise affecting the reaction? A. add a catalyst B. decrease surface
frutty [35]
A. add a catalyst is the correct answer.

A catalyst never takes part in the reaction, so it does not affect the reaction.

Hope this helps~
7 0
3 years ago
Read 2 more answers
If the pH is 4.5, what is the pOH ?
Ahat [919]
PH+pOH=14
4.5+pOH=14
pOH=14-4.5
pOH = 9.5

We know that
[H⁺][OH⁻]=10⁻¹⁴,so

-log([H⁺][OH⁻])=-log10⁻¹⁴
-log [H⁺]+ (- log[OH⁻])= - log10⁻¹⁴,
- log[H⁺] = pH
- log[OH⁻] = pOH
- log10⁻¹⁴=-(-14)log10=14*1=14
pH + pOH =14

7 0
3 years ago
A chemist prepares a solution of fluoride (MgF2) by measuring out 0.0191 ųmol of magnesium fluoride into a 400. mL volumetric fl
Vladimir79 [104]

Answer:

The answer to your question is:  0.05 M

Explanation:

I'm not sure about the units umol, I think is units mol.

Data

MgF2 = 0.0191 mol

Volume = 400 ml

Molarity = moles / volume

Molarity = 0.0191 / 0.4 l

Molarity = 0.048 ≈ 0.05 M

5 0
3 years ago
The atomic symbol Superscript 206 subscript 82 upper P b. represents lead-206 (Pb-206), an isotope that has 82 protons and 124 n
Serggg [28]

Answer:

\left \{ {{y=206} \atop {x=82}}Pb \right.

Explanation:

isotopes are various forms of same elements with different atomic number but different mass number.

Radioactivity is the emission of rays or particles from an atom to produce a new nuclei. There are various forms of radioactive emissions which are

  • Alpha particle emission  \left \{ {{y=4} \atop {x=2}}He \right.
  • Beta particle emission    \left \{ {{y=0} \atop {x=-1}}e \right.
  • gamma radiation             \left \{ {{y=0} \atop {x=0}}γ \right.

in the problem the product formed after radiation was Pb-206. isotopes of lead include Pb-204, Pb-206, Pb-207, Pb-208. they all have atomic number 82. which means the radiation cannot be ∝ or β since both radiations will alter the atomic number of the parent nucleus.

Only gamma radiation with \left \{ {{y=0} \atop {x=0}}γ \right. will produce a Pb-206 of atomic number 82 and mass number 206 , since gamma ray have 0 mass and has 0 atomic number.equation is shown below

\left \{ {{y=206} \atop {x=82}}Pb\right ⇒ \left \{ {{y=206} \atop {x=82}}Pb\right +  \left \{ {{y=0} \atop {x=0}}γ\right.

Thus the atomic symbol is \left \{ {{y=206} \atop {x=82}}Pb\right

8 0
3 years ago
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The elements in group 17 of the periodic table are all called halogens. All halogens have the same
goldfiish [28.3K]

The group 17 elements of the periodic table have 7 valence electrons and are highly reactive, with low melting and boiling points. The halogens - including fluorine, chlorine and bromine - have a common tendency to form salts, but they are all of a toxic nature.


https://www.google.com/search?q=what+do+all+halogens+have+in+common&rlz=1C5CHFA_enUS710US710&oq=what+do+all+halogens&aqs=chrome.1.69i57j0l5.6043j0j7&sourceid=chrome&ie=UTF-8


6 0
3 years ago
Read 2 more answers
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