Answer: The flexible foam acts as a shock resister and will help the impact bounce of the helmet.
Explanation:
<span>Structures that represent 2-methylbutan: a, b, c, d.
</span>a - because methyl group is closer to the right end of butane chain, numbers go from right to left in butane and methyl is on second carbon.
b - because methyl group is closer to the left end of butane chain, numbers go from left to right in butane and methyl is on second carbon.
c - longest chain is butane, from one CH₃ to another CH₃.
d - same as a).
Answer:
-368.62 kJ/mol
Explanation:
[(2 x - 470.11 kJ/mol) ( 0kJ/mol)] - [ 2 x -285.8 kJ/mol) (2x 0 kj/mol)] = -368.62 kJ/mol
Answer: No charge (0)
Explanation:
The atom has a proton of 22 and electron number of 19. This means the element has lost 3 electrons. Therefore, the net charge is +3.
So, if this atom gains 3 more electrons, the net charge would be zero (neutral).
The total number of electron would now be 22 which is the same as the proton number.
This implies the atom is now in an unreacted state or ground state.
Answer:
Lo siento, no sé la respuesta, pero espero que lo hagas bien