Calculate the average atomic mass for argon if its abundance in nature is 7.0% argon-39, 92.5% argon-40, and 0.5% argon-41. Show your work

Ineed this asap part i: scientific method what is the difference between science and pseudoscience? what is the scientific method?

Drag the tiles to the correct locations. each tile can be used more than once, but not all tiles will be used. one or more locations will remain empty. nitrosyl fluoride has the chemical formula nof nitrogen has five valence electrons, oxygen has six, and fluorine has seven. complete the lewis structure for this covalent compound. f n = = = . : : 0 : reset next um. all rights reserved us 2

Which element below could be and isotope of this atom