Answer:
Q = 768.47 J
Explanation:
Given that,
Mass of the metal, m = 25 g
Initial temperature, T₁ = 21.0 ºC
Final temperature, T₂ = 80.0 ºC
The specific heat of the metal is 0.521 J/gºC.
We know that the heat released due to the change in temperature is given by :
Hence, 768.47 J of heat energy will be needed.
Sodium tritioantimonate(III) and water are the products of the reaction between antimony(III) oxide and sodium hydroxide.
Sb2O3(s)+NaOH(aq)→Na3SbO3(aq)+H2O(l)
Balance the reaction from antimony, sodium, then hydrogen and oxygen.
Sb2O3(s)+6NaOH(aq)→2Na3SbO3(aq)+3H2O(l)
The equation is already balanced.
When each element in a chemical reaction has the same number of atoms and total charge on both the reactants and product sides of the equation, the reaction is said to be balanced. In other words, both sides of the reaction have an equal mass and charge of the components.
Because a chemical reaction is simply an arrangement of the atoms of the supplied elements, a chemical equation must be balanced. For the law of conservation of mass to be followed, the chemical equation must be balanced.
Learn more about chemical reaction here:
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Explanation:
1. The three factors are;
- Increasing the surface area of the reactants
- Using a catalyst
- Increasing temperature
2. Raising the temperature of a reaction mixture is the same as increasing the kinetic energy of the reacting molecules.
3. This reaction is an exothermic reaction. In exothermic reaction, the temperature of the system (mixture) decreases while that of the surroundings increases.
4. Reactions that releases energy to the surroundings are exothermic reactions.
5. All the options is an example of exothermic process because heat is being removed from the system except;
B. Evaporation of water - This is because it must absorb heat from the surroundings making it endothermic.
Explanation:
If two gases are present in a container, the total pressure int in the container is equal to the sum of the partial pressure of each individual gas. This is given by Dalton and it is known as Dalton's Law of Partial Pressure. The combined pressure of the two gases
