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Which hormone is secreted by the left atrial appendage?

Determine the heat energy released when a 4.30 gram piece of aluminum foil from the oven cools from 191oC) to 24oC.  The specific heat of Al is 0.897 J/goC. Please show your work with your answer.  You can use the equation editor   above if needed.

What is the correct formula for the ionic compound containing lithium ion and borate ion?   Show the individual ions first with their charges.  To show superscripts, use the T2 function in the tool bar. Then show the formula for the ionic compound.  To show subscripts, use the drop down next to T2 in order to get to T2 function on the tool bar. 2 Ion formulas = 2 pts Compound formula = 1 pt  

Match the letter in the left column with the correct description in the right column based on the image below.

Write the complete electron configuration for the element phosphorus, P: Use the T2 function in the tool bar to show superscripts.

Calculate the % by mass of a solution containing 42.5 g of sucrose in 222 g of water.  

Write the name for Al2S3 in the blank.

What is the volume of 3.00 M sulfuric acid that contains 9.809 g of H2SO4 solute (98.09 g/mol)?

Write the shorthand electron configuration (using noble gas core) for gold, Au. Use the T2 function in the tool bar to show superscripts.  

What element has the electron configuration of [Kr] 5s2 4d10 5p3 ?