The chemical equation below shows the reaction between tin (sn) and hydrogen fluoride (hf). Sn + 2hf snf2 + h2 the molar mass of hf is 20. 01 g/mol. How many moles of sn are required to react completely with 40 g of hf? 1 2 3 4.

Astore sells four 118-pound ears of corn in a package for $3.59. the expression 3.59p represents the cost of the corn for a number of packages. what does the variable p represent?

Which scenario describes intraspecific, indirect competition? a. a peacock defends its territory against another peacock. b. lions and hyenas compete for the same prey animals. c. a male black bear eats fish in an area of a lake, so other black bears can’t. d. different species of birds fight over spilled popcorn on the ground.

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