What is the wavelength of a gamma ray that has a frequency of 5.50 x 1021 Hz?
O 1.65 x 1030 m
O 1.83 x 1013 m
O 545 x 10-14 m
O
1.45 x 10-18 m

Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water: one with 40% and the other with 70% of salt in them. how much of each must she use to make the solution she needs? i am in need of