A speed boat is traveling at 100km/hr. How many hours will it take for the boat to cover a distance of 115km?

How would one express 356,000,000 km in scientific notation?

Consider two equal size rooms connected by an open door. One room is maintained at a higher temperature then the other one. Which room contains more air molecules? Explain.

What effect does heating a solid to a hightemperature have have on its crystal lattice? a.) there is no effect. crystal lattice are impervious to heat b.) the lattice breaks apart and the ions lose their charge c.

How many moles of glucose, C6H12O6, can be burned when 60.0 mol of oxygen is available? C6H12O6 (s) + 6O2 (g) → 6CO2 (g) + 6H2O (l)

When a white powder is added to a liquid in a beaker at room temperature, the beaker becomes too hot to touch. What kind of reaction is this an example of? A. a fusion reaction B. a combustion reaction C. an exothermic reaction D.

How does a chemical equation express relationship between substance?

Toxaphene is a pesticide that was applied to cotton crops. If 1.5 kg of toxaphene is applied to 1000 m3 of soil and the soil density is 1700 kg/m3, Determine the toxaphene concentration in the soil in units of ppm.

What factor determines wether an acid is strong or weak?

A student prepared an unknown sample by making a dilute solution of the unknown sample. The dilute sample was prepared by adding 5.0 mL of the unknown sample to a 25.0 mL flask.

In which substance do the molecules have the strongest attractions to one another? a. sugar, a solid c. sulfuric acid, a liquid b. hydrogen, a gas d. water, a liquid