When drawing lewis structures for simple molecules, you need to first sum the number of valence electrons from all atoms in the molecule. how many valence electrons should you use to draw a lewis structure of carbon dioxide (co2)?

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What is the primary force that suspension bridges use cables to hold their spans up? a. tension force b. resistance force c. normal force d. elastic force e. applied force

You've already seen the value of 9.8 in this lesson. what's this value called? what quantity does it represent?

Avertical clean glass piezometer tube has an inside diameter of d = 1 mm and is used to measure pressure in a horizontal pipe carrying water as shown. due to pressure in the pipe, the water at 20c rises into the tube to a height h. if the water pressure in the pipe is p = 500 pa gauge, estimate the height h: (a) without considering surface tension (b) with surface tension (capillary) effects. the contact angle  can be assumed at 30 deg