A student is calculating the molarity of a solution that has 43.54 g of aluminum nitrate dissolved in water to make 4.0 L of water. How many significant figures should the molarity be expressed in? A. one
B. two
C. three
D. Four
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Select the correct answer how does the heat content of the reaction change in the process of photosynthesis when a glucose molecule is formed? ca the value of is negative the value of qis positive the value of a remains constant the value of a decreases the value of equals zero e

Astudent is trying to create a table that compares hypotheses, theories, and laws. hypothesis theory law do scientific researchers formulate it? yes yes yes does it explain why things happen? yes yes no yes yes yes is it used to make predictions? no yes yes which of the following questions would most likely fill the blank in the table? is it an intelligent guess? is it newly formulated? is it based on observations? has it been proved?

How many moles of no2 will form when 3.3 moles of cu are reacted with excess hno3?