Which of the following is not an empirical formula? c3h8o c2n2h8 sb2s3 becr2o7

How many atoms are there in 5.70 mol of mg

Great amounts of electromagnetic energy from our sun and other bodies in space travel through space. which is a logical conclusion about these electromagnetic waves? their energy must be very their frequency must be very low these waves can travel without a medium they only travel through a vacuum of space

What is a difference between a mixture of elements and a mixture of compounds