What is the mass of 1.72 moles of sodium nitrate? Use the periodic table and the polyatomic ion resource.

What causes different colors to appear in the sky? the absorption of light by air molecules the reflection of light by bodies of water the greenhouse effect in earth's atmosphere the scattering and reflection of light by dust particles

Which of these is an example of pseudoscience? a) predicting the time of sunrise based on data on position of earth b) predicting the date of the moon phases based on data on position of earth c) predicting eclipses based on the position of the sun and the moon d) predicting future events in a person's life based on the position of the moon

Karen has discovered a new organism in the amazon rainforest. it moves by itself, is a consumer, and its cells do not have a cell wall. in what kingdom would this newly discovered organism belong? a) amazon b) animalia c) fungi d) plantae