The volume of a sample of CO2 gas is 4.5 L and the mass of the sample is 8.865 g, what is the density of CO2 gas? *answer must be in scientific notation*

Check the correct box to describe the periodic trends in electronegativity. electronegativity across a period: decreases. increases. electronegativity down a group: decreases. increases.

Stage in which a typical star has completely stopped fusion

Iron (fe) reacts with copper sulfate (cuso4) to form iron (ii) sulfate. in this reaction, cu2+ gains electrons to form cu. which statement is true about this reaction? fe(s) + cuso4(aq) → feso4(aq) + cu(s)