Answer : option B) Gravity acting on the edges of plates and friction between the plate and the asthenosphere.
Explanation : The gravitational force acting on the edges of the tectonic plates raise a friction between the plate and the asthenosphere, which results into the motion of the tectonic plates.
Usually, the tectonic plates are found to move because of the intense heat produced from the Earth's core which causes the molten rock in the mantle layer to move and make a motion. It moves in a pattern which is called as convection cell that forms when the warm material rises, and cools, later eventually sink down producing the motion in the tectonic plates.
Answer:
Explanation:
1. Atomic mass of K
To get the atomic mass of K, you calculate the weighted average of the isotopic masses.
That is, you multiply the atomic mass of each isotope by a number representing its relative importance (e.g., its percent of the total).
Set up a table for easy calculation:
2. Formula mass of KF
Answer:
Here are some of the differences between a mixture of iron and sulfur, and iron sulfide: the mixture can contain more or less iron, but iron sulfide always contains equal amounts of iron and sulfur. the iron and sulfur atoms are not joined together in the mixture, but they are joined together in iron sulfide.
Explanation:
The strong base will be dissociated completely into the aqueous solution. The pOH of the solution can be determined by the concentration of the hydroxide ion. The strong bases have lower pOH value.
Answer:
Pb(s), Sn(s), Cu(s), Fe(s), Al(s)
Explanation:
The specific heat (Cp) of a substance is defined as the heat required per unit of mass to raise the temperature in 1°C.
Thus, the substance with the larger Cp will need more energy to reach a temperature and vice versa.
Based on this information, the fastest metal to reach 80°C will be Pb -lowest Cp-, then Sn, Cu, Fe and Al.
From 1 to 5:
<em>Pb(s), Sn(s), Cu(s), Fe(s), Al(s)</em>