3 years ago

two atoms have the same number of protons but different number of neutrons. what can you conclude about these masses

1 answer:

7 0

These masses are isotopes. By definition, isotopes of an element have the same number of protons as the given element, but different numbers of neutrons.

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Assume the pH of household bleach is 12. What is the hydronium ion concentration in household bleach? What is it hydroxide ion c

Ostrovityanka [42]

Answer:

[H3O+] = 1.0*10^-12 M

[OH-] = 0.01 M

Explanation:

We can use the following equation to find the hydronium ion concentration. Plug in the pH and solve for H3O+.

pH = -log[H3O+]

Now, to find the hydroxide ion concentration we will use the two following equations.

14 = pH + pOH

pOH = -log[OH-]

14 = 12 + pOH

pOH = 2

2 = -log[OH-]

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Explanation:

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zalisa [80]

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In an experiment conducted between oxygen and chlorine gas it was found that oxygen gas spread much faster than chlorine. What i

soldier1979 [14.2K]

Answer:

Because oxygen is lighter

Explanation:

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3 years ago

Which description is true of 0.02 M Ca(OH)2 if Ca(OH)2 completely dissociates in water? A. It’s a dilute strong acid. B. It’s a

SCORPION-xisa [38]

Answer:- B. It's a dilute strong base.

Explanations:- The given concentration of calcium hydroxide is 0.02 M which is low means it is diluted. It has hydroxide ions which means it's a base. If it dissociates completely then it's a strong base. The dissociation equation is written as:

$Ca(OH)_2(aq)\rightarrow Ca^+^2(aq)+2OH^-(aq)$

So, the correct option is B) It's a dilute strong base.

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3 years ago