Answer:
Research has shown that the major driving force for most plate movement is slab pull, because the plates with more of their edges being subducted are the faster-moving ones. However, ridge push is also presented in recent research to be a force that drives the movement of plates. Geologists have hypothesized that the movement of tectonic plates is related to convection currents in the earth's mantle. Tremendous heat and pressure within the earth cause the hot magma to flow in convection currents. These currents cause the movement of the tectonic plates that make up the earth's crust. They are also both by the energy of gravitational force of the earth.
Explanation:
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Answer:A) It was developed from past observations- true
It is subject to experimentation and revision.- false
It explains why mass is conserved- false
It predicts future observations-true
Explanation:
Before a hypothesis is proclaimed to be a law in science, numerous observation must have confirmed its validity and rigorous experimentation under carefully controlled conditions usually precedes the acceptance of a hypothesis as a law. The law of conservation of mass was developed from numerous past observation that proved its validity.
Because Na has one too many electron to be stable, while Mg has 2. once they loose those electrons, they will be come ion. loosing one electron will give the ion a 1+ charge, and loosing 2 will create a 2+ charge
Answer : The number of moles of water will be, 1.235 moles
Solution : Given,
Mass of 
= 42 grams
Molar mass of = 34 g/mole
First we have to calculate the moles of
Now we have to calculate the moles of water.
The balanced chemical reaction will be,
From the balanced reaction, we conclude that
As, 2 moles of decomposes to give 2 moles of water
So, 1.235 moles of decomposes to give 1.235 moles of water
Therefore, the number of moles of water will be, 1.235 moles
