If the mass of a material is 119 grams and the volume of the material is 20 cm3, what would the density of the material be?

Write a balanced equation for the complete oxidation reaction that occurs when ethanol (c2h5oh) burns in air.

Why using a temperature probe is preferable to using a conventional mercury thermometers

How many molecules are in 6 moles of methane

People who stand in the moons umbra, the darkest part of its shadow, experience what? A - partial lunar eclipse B - partial solar eclipse C - a total solar eclipse D - a total lunar eclipse

Consider two different types of molecules reacting in the gas phase. which change below will not cause an increase in the rate of the reaction? select one: a. add a catalyst. b. increase the temperature at constant volume. c.

There are seven major levels of classification. Kingdom and Phylum are just two of the levels. Which of the following are also major levels of classification? Choose all answers that are correct. A. Class B. Order C. Family D. Level

An experiment with high validity is

What is the smallest part of a tree that can do all the things needed for life?

As the PH scale decreases or increases, how does this affect the acidity?

During an endothermic phase change, what happens to the potential energy and the kinetic energy? Potential energy stays the same, and kinetic energy increases. Potential energy increases, and kinetic energy increases.