Phosphorus reacts with aqueous sodium hydroxide as in the equation below: P4 + 3NaOH + 3H2O > PH3 + 3NaH2PO2

Which element is oxidised?

a) hydrogen
b) oxygen
c) phosphorus
d) sodium

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The number at the end of an isotope’s name is the number.

Avolleyball player hit a ball with a mass of 0.25 kg. the average acceleration of the ball is 15.5 m/s². how much force did the volleyball player apply to the ball? 62.0 n 3.87 n 62.0 m/s² 3.87 m/s²