If a substance is not at its melting or boiling point, as the heat content of a sample of matter increases;
- Its temperature increases
- The space between particles increases
- The particles move faster
Explanation:
As heat energy is applied to a substance, its temperature increases. The molecules of the gain more kinetic energy and the bombardment between the molecules increase with frequency and energy. The distance between the molecules also increases and this is attributed to the expansion of substances when heated. This continues until temperatures are reached where the kinetic energy of the molecules is high enough to overcome the intermolecular forces between the molecules and the substance changes phase.
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Answer:
0.4762 J/g°C.
Explanation:
<em>The amount of heat released to water = Q = m.c.ΔT.</em>
where, m is the mass of water (m = 15.0 g).
c is the specific heat capacity of water = ??? J/g°C.
ΔT is the temperature difference = (final T - initial T = 37.0°C - 30.0°C = 7.0°C).
<em>∴ The specific heat capacity of water = c = Q/m.ΔT</em> = (50.0 J)/(15.0 g)(7.0°C) = <em>0.4762 J/g°C.</em>
Explanation:
how are you confused there just tell me the problem
The formula unit equation for the given reaction occurring in water is
CaS(aq) + FeBr₂(s) → FeS(s) + CaBr₂(aq).
<h3>What is chemical reaction?</h3>
Chemical reactions are those reaction in which reactant molecules react with each other for the formation of product.
When calcium sulfide reacts with iron (II) bromide for the formation of iron(II) sulfide and calcium bromide will be represented through the following equation:
CaS(aq) + FeBr₂(s) → FeS(s) + CaBr₂(aq)
Above reaction best explains the formula unit of given reaction as all valency of atoms are satisfied there.
Hence, the required formula unit is CaS(aq) + FeBr₂(s) → FeS(s) + CaBr₂(aq).
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A. solutions and colloids