Answer:920.31 J
Explanation:
Given
Volume of water (V)
mass(m)
Temperature 
Final Temperature 
specific heat of water(c)
Therefore heat required to removed is
Answer:
30 m/s
Explanation:
Speed is distance over time. 60 meters / 2 seconds, = 30 m/s.
Other than for the chemical symbol, the electron dot diagram for silicon would be the same as it was for carbon.
The reason for this is because electron dot diagrams are used to represent the electrons in the outermost, or valence, shell of an atom. In a group of the periodic table, all of the elements have the same number of valence shell electrons. This means that all elements belonging to the same group have the same electron dot diagram, except for the symbol of the element that is within the diagram.
They are indeed significant. This statement is true. The zero that is not significant is the one found before the first non-zero digit.
