5.241 in scientific notation
5.241 × 10^0
Answer:
The solid crystals disappeared
Explanation:
When a soluble solid solute is added to water, the solid solute disappears after a little while. The disappearance of this solute indicates that the solute has been dissolved in water.
In this case, blue copper sulphate crystals are added to water, the blue crystals disappear leaving only a blue solution. The disappearance of these blue copper sulphate crystals indicates that the substance has dissolved in water.
The process that occurs at the anode in an
electrochemical cell is the loss of electrons. The answer is number 2. Oxidation occurs as electrons are lost at the
anode at one of the electrodes in both an electrolytic cell and a
voltaic cell.
46.0684g I think because you have to concert grams to moles or moles to grams
Exothermic
Explanation:
A chemical reaction that has ΔH of -2764Kj indicates that the reaction that took place was an exothermic reaction.
- The enthalpy changes accompanying a reaction causes heat changes.
- In an exothermic reaction, heat is usually liberated to the surroundings.
- The environment becomes hotter at the end of the reaction.
- It is assigned a negative value because the sum of the heat contents of products is less than that of reactants.
- A positive sign is for an endothermic reaction.
learn more:
Exothermic reactions brainly.com/question/10567109
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