How many pedals are needed to make 135 tricycles

A student was given a pale blue transparent liquid in a beaker. The student gently heated the solution until the liquid had vaporized. Some blue crystals remained on the bottom of the beaker, why.

Write the chemical equation for the reaction of propylamine, c3h7nh2 with water. (include all phases in your answer)

The frequencies of visible light are slightly higher than ultraviolet waves. True False

Are all acids colourless?

Aqueous carbonic acid H2CL3decomposes into carbon dioxide gas and liquid water. Write a balanced chemical equation for this reaction.

When does a spring tide take place? At the beginning of spring Only during the spring season Only after spring is over At any time

The highest cloud are known as

What is the mass of 4.85 X 10^22 atoms of iron (Fe) ?

If element x has 95 protons how many electrons does it have

Which of the following when dissolved in deionized water would make a good conducting solution? a) methanolb) sugarc) baking soda