A cross-country skier can complete a 7.5 km race in 45 min. What is the skier's average speed? km/h

g What is the molarity of an aqueous solution that is 2.50 % glucose (C6H12O6) by mass? Assume that the density of the solution is 1.04 g/cm3

Increasing the concentration of a reactant speeds up a reaction. True False

We start in situation A with 1 mole of an ideal gas in the right bulb with the valve closed. The gas has a pressure, volume, and temperature we symbolize by pA, VA, TA. Then the gas spreads out to occupy both sides.

Examine the reaction equation. CH4 + O2 →H2O + CO2 What coefficients will balance the equation? A) 2, 3, 2, 2 B) 1, 3, 2, 1 C) 1, 2, 2, 1 D) 1, 1, 1, 1

At 20.°C, a 1.2-gram sample of Mg ribbon reacts rapidly with 10.0 milliliters of 1.0 M HCl (aq). Which change in conditions would have caused the reaction to proceed more slowly?

Gas is squeezed into a small container is it compressibility or heat of combustion

How is pressure related to buoyant force

How are saturated and supersaturated solutions similar?

Cobalt fluoride crystallizes in a closest packed array of fluoride ions, with the cobalt ions filling one-half of the octahedral holes. What is the formula of this compound?

When you get into a parked car in the summer time, the metal clip is hot and the seat belt fabric is not. What has a higher specific heat, the metal clip or the seat belt fabric? Think about the definition of specific heat.