What is the total pressure of a gas mixture that contains 31.okPa of oxygen, 26.8kPa of nitrogen and 26.7 kPa of hydrogen

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.

How many atoms are there in 5.70 mol of mg

Write the formula for the following chemicals. 7. e. trinitrogen tetraoxide a calcium phosphate f. magnesium acetate b. potassium sulfide g nickel(iii) cyanide c carbon dioxide h. silver sulfate d. cobalt(ii) chloride