An isotope has a mass number of 40. The atomic number is 32. How many neutrons does it have?

Pls! plant cells and animal cells were observed under a microscope. the characteristics of two cells are listed below. cell p: does not capture sunlight cell q: has cytoplasm but no chloroplast which statement about the two cells is correct? cell q also has a cell wall. cell q also has large vacuole. cell p also has a large vacuole. cell p also has a cell membrane.

What’s the percent by mass of carbon in c10h14n2

How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?