Element X has two isotopes. If 98.90% of the element has an isotopic mass of 12.00 amu, and 1.10% of the element has an isotopic mass of 13.01 amu. Calculate the average atomic mass for this element and identify the element. Use a stylus, pencil (if using a chromebook), or finger to solve the problem in the space below. (1 point work, 1 point answer, 1 point sig figs, 1 point units, and 1 point for correct element identified)

Will give brainliest it is a lab from k12 here is the linkfor each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table. type your answer here. (score for question 3: of 5 points) were there any metallic compounds that did not react with either the acid or the base? write the type of metal, based on your examination of the periodic table. type your answer here. (score for question 4: of 5 points) make a general statement about the reactivity of the metals in this experiment. type your answer here.

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

What is the molar mass of the anhydrous compound? answer using four significant figures. 36.02 g/mol 120.15 g/mol 156.12 g/mol