2 years ago

What is the arrhenius definition of an acid?

1 answer:

8 0

As defined by Arrhenius, acid-base reactions are characterized by acids, which dissociate in aqueous solution to form hydrogen ions (H+) and bases, which form hydroxide (OH−) ions. Acids are defined as a compound or element that releases hydrogen (H+) ions into the solution

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(fill in the blanks) In an ionic compound, the positive ion is called

klasskru [66]

Answer:

positive ion is a Cation while a negative ion is called an anion

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2 years ago

If a substance changes its shape and size, is it a physical or chemical change? - chemical - physical - both

Alex

Physical. chemical only applies when it undergoes a reaction

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2 years ago

How do you solve this ??

kotegsom [21]

Answer : Option A) 2.00 eV

Explanation : The conversion of J to eV is done with the following formula;

$E_{eV} = E_{J} X (6.241 X 10^{18})$

Here, we have the value of particle in terms of Joules which is 3.2 X $10^{-19}$

So, on substituting we get,
$E_{eV}$ = 3.2 X $10^{-19}$ X $(6.241 X 10^{18} )$

$E_{eV}$ = 1.99 eV so, it can be rounded off to 2.00 eV.

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3 years ago

This transition metal is in group 12 and has less than 34 protons

slava [35]

Zinc (Zn) has less than 34 protons, 30 to be exact, and is a transition metal in Group 12. Note: it is also called a "post-transition metal."

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2 years ago

Which criteria are responsible for deciding whether a heterogeneous mixture is a colloid or a suspension?

gayaneshka [121]

I believe the criteria responsible for deciding whether a heterogeneous mixture is a colloid or a suspension is whether the particles remain suspended for an extended period of time. I hope it helps you.

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2 years ago

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