The correct symbol is 4He. You may also encounter it displayed as helium-4, He-4.
Amalgamating is the coating of zinc plate with mercury.
Answer:
Explanation:
At a location above the halfway point between the window and the ground
Answer:
A Pareto chart, named after an Italian economist, combines a bar chart with a line graph. The bar chart is different from a histogram in more than one way. For example, the vertical bars need not touch one another as per a histogram
Explanation:
He is American. Alex Rodriguez