Explanation:
Temperature has a direct relationship with reaction rate. The higher the temperature the faster the rate of reaction of a system.
- For every 10°C rise in temperature above the room temperature, it has been found that reaction rates becomes double or triple.
- When the temperature of a reacting system increases, the kinetic energy of each of the reacting particles increases.
- The frequency of collision and effective collision also increases per unit of time.
- Many of the reacting particles will acquire an energy greater than or equal to the activation energy of the reaction.
Answer:
decreases
Explanation:
warm water hold less dissolved oxygen than cold water because the molecules are moving faster.
C. would best suit your explanation of evolution
Answer:
4 mol of KOH would produce 116.6 g of Mg(OH)₂
Explanation:
According to the following balanced equation:
- MgCl₂+ 2 KOH -----> Mg(OH)₂ + 2 KCL
One can note that 2 mol of KOH react with MgCl₂ to produce 1 mol of Mg(OH)₂.
using cross multiplication
2 mol of KOH → 1 mol of Mg(OH)₂.
4 mol of KOH → ?? mol of Mg(OH)₂.
no of moles of Mg(OH)₂ = (1 mol* 4 mol) / 2 mol =2 mol
Now we can convert moles of Mg(OH)₂ to grams using the formula
mass of Mg(OH)₂= (no. of moles * molar mass) = (2 mol * 58.3g/mol) = 116.6 g
- So, 4 mol of KOH would produce 116.6 g of Mg(OH)₂.
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