Which of the following methods is not used to locate underground oil reserves?

a.

sonar

b.

core samples

c.

electrical signals

d.

mining

Use examples from the article to explain one positive and one negative effect that chemistry has had on society

Look at the reaction below: ca(hco3)2 --> caco3 + co2 + h2o first, balance the reaction. once balanced, use dimensional analysis or another method to find out how many moles of carbon dioxide will be produced if we start with 16.5 moles of calcium bicarbonate (calcium hydrogen carbonate). = mol of co2 number needs to be reported to three significant figures.

This drawing shows a human body system. what is the primary function of this body system?