Answer:
A) Alkaline Earth Metals
Explanation:
Area Marked A would be Alkali Metals
Area Marked B would be Alkaline Earth Metals
Area Marked C would be Transition Metals
Area marked H would be Halogens
It is because due to the movement of the plates, natural diasters such as earthquakes take place on the earths surface.
hope this helps you
Answer:
According to the collision theory, we can increase the rate of a reaction by increasing the concentration of reactants. We can also increase the rate of a reaction by increasing temperature to safe levels.
In the reaction mentioned in the question, Mg + 2HCl → MgCl2 + H2, if we increase the amount of magnesium or HCl, the reaction will proceed faster. Similarly, if we increase the temperature, then also the reaction rate will increase.
The answer is A. H2C2O4 and HC2O4-. For B and C, the two substances will reaction with each other. For A, it can be protons donor and receptor at the same time. So it is a good buffer.
Answer:
≈ 395,8 J/(kg * °C)
Explanation:
m = 44 g = 0,044 kg
= 22 °C
= 33,6 °C
Q = 202 J
The formula is: Q = c * m * (
)
c = 
Calculating:
c = 202 J / 0,044 kg * (33,6 °C - 22 °C) ≈ 395,8 J/(kg * °C)
