2.38g of black copper(iii) oxide is completely reduced to by hydrogen to give copper and water. What are the number of atoms of copper formed? Equation for this reaction: Cu203 + 3H2 → 2Cu + 3H20​

The big bang nucleosynthesis theory states that elements were produced in the first few minutes of the big bang while elements have their origins in the interiors of stars, forming much later in the history of the universe.

Draw a line graph showing the relationship between temperature in kelvin as a function of kinetic energy.

Calculate the concentration of all species in a 0.165 m solution of h2co3.