In the reaction C7H16 + __O2 → 8H2O + 7CO2, what coefficient should be placed in front of O2 to balance the reaction?

7

8

11

no coefficient is needed

What term best describes the relationship between the pronator quadratus and supinator?

In France, grapes are 1.95 euros per kilogram. What is the cost of grapes, in dollars per pound, if the exchange rate is 1.14 dollars/euro? (2.6)

What is a weak chemical attraction between polar molecules?

Which is a monosaccharide? A cellulose B glucose C glycogen D sucrose

What volume of 0.120 M HNO3 (aq) is needed to completely neutralize 150.0 milliliters of 0.100 M NaOH (aq) ? (1) 62.5 mL (3) 180. mL (2) 125 mL (4) 360. mL

1. How is pressure affected as depth increases? 2. As the sun heats the surface of the oceans, two layers of water result. What separates the layers? 3. How is temperature affected when? (a) the depth increases (b) the latitude increases 4.

Are nails in a jar with water a chemical change

What is the molarity of a solution composed of 4.73 g of potassium iodide (KI) dissolved in enough water to make 0.169 L of solution? Answer in units of M.

Suppose you were given a substance and asked to determine whether or not it was a plasma. Write the characteristics you would look for to identify the substance.

What is a comet? tell in a short and easy answer