Which component of air enables plants to synthesise their food by photosynthesis?

What type of reaction is the equation C + O2 → CO2? Question 10 options: decomposition single displacement synthesis

The following balanced equation shows the synthesis of ammonia (NH3). According to this equation, how many hydrogen atoms are in the final product? N2 + 3H2 2NH3 2 3 5 6

State whether the following statements are true or false. If false, explain why. (a) A reaction stops when equilibrium is reached. (b) An equilibrium reaction is not affected by increasing the concentrations of products.

Harry Hess resurrected Wegener's continental drift hypothesis and also the mantle convection idea of Holmes. T=True F=False

A cabr2 solution has a concentration of 4m. what is the concentration if 2 l of the solution are mixed with 6 l of water?

What would happen if you tried to sqeeze a gas into a smaller container?

Paint, paint thinners and some cleaning agents can weaken the shell of a hard hat and may eliminate

A 10 chunk of metal has a specific heat of 0.25 J/g ºC. The temperature is changed from 10ºC to 45ºC. How much heat is required?

In this reaction what is the correct coefficient for sodium chloride? pb (no3) 2? nacl → pbcl2? nano3

Classify each of the following as a path function or a state function. work energy distance traveled enthalpy heat