What is the instrument which is commonly used to measure the intensity of radioactivity is called

In a constant volume bomb calorimeter, the combustion of 0.6654 gof an organic compound with a molecular mass of 46.07 amu causesthe temperature in the calorimeter to rise from 25.000oC to 30.589 oC.

Which are ways to improve the design of this experiment? Check all that apply. -Reduce the sample size so the experiment can be done faster. -Increase the sample size from 6 cups to 12 cups of sand and water.

The kelvin temperature of a substance is inversely proportional to the average kinetic energy of the particles in that substance. question 13 options: a. True b. False

At 4.00 L, an expandable vessel contains 0.864 mol of oxygen gas. How many liters of oxygen gas must be added at constant temperature and pressure if you need a total of 1.

Pressure changes have no effect on the entropy of substances in which of the following states? a. solids and gases c. liquids and solids b. liquids and gases d. gases only

Which describes an object's speed when free falling in a vacuum? The object accelerates until it reaches its terminal velocity. The object falls at a constant speed because only one force acts on it.

If you had 20,000 liters of NO2 how many moles would you have?

What does the name amino acid tell you about the structure of this molecule?

Fluorine is a toxic, reactive gas. which representation (structural formula, electron dot structure, or three-dimensional model) would you use to explain why fluorine is so reactive, why?

The electronic configuration of an element is given below. 1s22s22p63s1 Which statement about the reactivity of the element is true? It is reactive because it has a full outermost energy level.