1. Based on the diagram below, rank the three objects from least dense to most dense. Y N O A. Object X, object Z, object Y O B. Object Z, object Y, object X O C. Object X, object Y, object Z. OD. Object Y, object Z, object X

Calculate - analysis of compound composed of iron and oxygen yields 174.86 of fe and 75.14g of o. what is the empirical formula for this compound?

1) which of the following is the best example of a physical change? a) sugar dissolving in tea b) firefly glowing 2) in the combustion of ethane, what is/are the reactants? c2h6 + o2 ==> co2 + h2o a) c2h6 and o2 b) co2 and c2h6

At element makes up all organic compounds?