Excessive use of chemical fertilizer causes chemical pollution. how?​

Consider the nuclear equation below. 239/94 pu—-> x+ 4/2 he. what is x?

Fill in the coefficients that will balance the following reaction: a0cr2(so4)3 + a1agno3 -> a2cr(no3)3 + a3ag2so4

How many atoms of mg are present in 97.22 grams of mg? 6.022 × 1023 2.408 × 1024 4.818 × 1024 5.855 × 1025