Noble gases are supposed to be the least reactive elements so I’m assuming Neon would be the most least reactive out of all of them.
Answer:
The specific heat capacity of silver metal is 0.021485 J/g°C.
Explanation:
The specific heat capacity of silver metal can be found out by using the formula,
Q = (mass) (ΔT) (Cp)
Given,
mass = 75 grams
Q = 56.4 j
ΔT = 35°C
Substituting values,
56.4 = (75)(35)(Cp)
Cp = 0.021485 J/g°C.
Answer:
Chilling the hydrogen peroxide solution
Explanation:
The MnO₂ is acting as a catalyst.
Chilling the hydrogen peroxide solution reduces the average kinetic energy of the H₂O₂ molecules.
Fewer of them will have enough kinetic energy to overcome the activation energy of the reaction. The rate will decrease.
A is wrong. Using a larger amount of solution does not increase the number of H₂O₂ molecules that can reach the surface of the catalyst per second. There is no effect on the rate.
B is wrong. Increasing the mass of the cube increases its surface area. More molecules of H₂O₂ can reach the surface of the catalyst per second. The rate increases.
D is wrong. Smashing the cube into pieces vastly increases the surface area, so the rate increases
Well weathering adds different elements to rocks which they might not be used to. For example, very hard rain & harsh winds could push a rock, causing it to fall & break off into smaller rocks.
