What mass of na2so4 is needed to make 2.5l of 2.0m solution? (na=23g; s=32g; o=16g) 178g 284g 356g 710g

What is a possible quantum number set for an electron in the 3s orbital of a magnesium atom

Which rate indicates the number of children that would be born per woman if she were to live to the end of her child bearing years

Consider a culture medium on which only gram-positive organisms such as staphylococcus aureus colonies can grow due to an elevated nacl level. a yellow halo surrounds the growth, indicating the bacterium fermented a sugar in the medium, decreasing the ph as a result and changing the color of a ph indicator chemical. this type of medium would be referred to as a differential and enrichment culture.