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Tatiana [17]
3 years ago
10

What carries the useful energy of a lamp to its surroundings?

Chemistry
1 answer:
serious [3.7K]3 years ago
6 0
A. The potential energy from the batteries in the torch is transferred to the filament of the bulb. The energy is transferred to the surroundings as thermal energy and light. Most of the energy is transferred as thermal energy which is not useful and only some of the energy is transferred as light
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What are the spectator ions in the reaction between mg(oh)2 (aq) and hcl (aq)?
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The spectator ions in the reaction between aqueous Mg(OH)_2 and aqueous HCl would be   Mg^{2+ and Cl^- ions.

<h3>What are spectator ions?</h3>

Spectator ions are anions or cations that exist both as reactants and as products in a reaction. Their forms remain unchanged both in the reactants and in the products.

Aqueous Mg(OH)_2 and aqueous HCl  react according to the following equation:

Mg (OH)_2 (aq) + 2HCl (aq) --- > MgCl_2 (aq) +2 H_2O (l)

Before the reaction, Mg^{2+ and Cl^- existed in the reactants as Mg(OH)_2 and HCl respectively. After the reaction,  Mg^{2+ and Cl^- exist as MgCl_2 in the product.

Thus, the spectator ions in this case are  Mg^{2+ and Cl^- ions because their forms did not change after the reaction.

More on spectator ions can be found here: brainly.com/question/28913274

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