A student accidentally spills 50.0 cm3 of 2.00 moldm' HCl(aq) on the bench. What is the minimum mass of anhydrous sodium carbonate required to neutralise the acid?

Which of the following best explains why the end of a spoon sticking out of a cup of hot water also gets hot? question 7 options: the heat from the hot water is conducted through the spoon handle the hot water heats the air surrounding the upper part of the spoon. the hot water causes a physical change in the spoon handle. the hot water causes a chemical reaction to take place in the spoon.

What changes occur in the reaction indicated by the equation? check all that apply. the hydrogen nucleus loses protons. the oxygen nucleus gains protons. the bond in h2 is broken, and new bonds are formed between hydrogen and oxygen atoms. each electron associated with a hydrogen atom is shared with an oxygen atom.

Explain how global warming could have affected yellowstone frog and salamander habitat's, resulting in changes in the populations of these species