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posledela
3 years ago
11

When an atom loses electrons it becomes___

Chemistry
1 answer:
murzikaleks [220]3 years ago
8 0
<span>It becomes an </span>ion<span>. An atom that gains a negative electron, it becomes a negative </span>ion<span>. If it loses an electron it becomes a positive </span>ion<span>.</span>

Hope this helps!

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One property of water that makes it unique is its density. Which example describes a result of this property?
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Polar bears float on ice floes to hunt for food.

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3 years ago
PLEASE HELP FAST!! How much energy (in calories) is need to melt 3.0 moles of ice?
Viktor [21]

Answer:

Energy

Explanation:

The heat required to change the phase of a substance is given by the equation:

Q= mL (Q= Heat required, m= mass, L= Latent Heat of Fusion/Evaporation/Anything else).

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Q= 3.0 kg x 333 kJ/Kg

So, Q= 999 kJ

4 0
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Question 11: How does the energy of a photon emitted when the electron moves from the 3rd orbital to the 2nd orbital compare to
hodyreva [135]

Answer:

Explanation:

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3 0
3 years ago
How many kJ of heat are released by the reaction of 25.0 g of Na2O2(s) in the following reaction? (M = 78.0 g/mol for Na2O2)
solong [7]

-20.16 KJ of heat are released by the reaction of 25.0 g of Na2O2.

Explanation:

Given:

mass of Na2O2 = 25 grams

atomic mass of Na2O2 = 78 gram/mole

number of mole = \frac{mass}{atomic mass of 1 mole}

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The balanced equation for the reaction:

2 Na2O2(s) + 2 H2O(l) → 4 NaOH(aq) + O2(g) ∆Hο = −126 kJ

It can be seen that 126 KJ of energy is released when 2 moles of Na2O2 undergoes reaction.

similarly 0.3 moles of Na2O2 on reaction would give:

\frac{126}{2} = \frac{x}{0.32}

x = \frac{126 x 0.32}{2}

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6 0
3 years ago
Find the number of moles of argon in 364 grams of argon.
serg [7]

Answer:D. 9.1 mole Ar

Explanation:

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= 9.1 moles Ar

3 0
3 years ago
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