A sample of solid silicon is heated with an electrical coil. If 149 Joules of energy are added to a 13.8 gram sample and the final temperature is 35.9°C, what is the initial temperature of the silicon?

What are transitions between a liquid and gas called? identify which way they are transitioning

The diagram below shows a cell placed in a solution.a cell is shown placed inside a beaker. it is labeled cell. the solution inside the beaker is labeled 40% salt solution and the solution inside the cell is labeled 20% salt solution.only water is allowed to move in and out of the cell. what will most likely happen to the cell? it will expand as water moves out of it. it will shrink as water moves out of it.it will expand as water moves into it. it will shrink as water moves into it.

Given the following reaction: c3h8+5o2=3co2+4h20 how many grams of co2 will be produced 7 g of c3h8 and 98 g of o2