What does it mean when there are 2.3 x 10-4 moles?

Why was the weigh/filter paper used in this experiment? Check all that apply. a. to weigh the tablet to make sure that all of the broken pieces of tablet were added b. to the water to prevent the tablet from absorbing water c.

Gallium is composed of two naturally occurring isotopes: Ga-69 (60.108%) and Ga-71. The ratio of the masses of the two isotopes is 1.0290. What is the mass of Ga-69?

What are the two tubes connecting the lungs and the trachea? •bronchi •pharynx •larynx •alveoli

The graph below was created showing the growth of the plant. how would you know the the y-axis is measuring the growth of the plant?

Balance the chemical equation below using the smallest possible whole number stoichiometric coefficients. C (s) + H2 (g) - -> C2H6 (g) ?

At a certain temperature this reaction follows second-order kinetics with a rate constant of 14.1 M-1s-1 : 2SO3g - -> 2SO2g + O2g Suppose a vessel contains SO3 at a concentration of 1.44M. Calculate the concentration of SO3 in the vessel 0.

A fusion reaction takes places between carbon and another element. Neutrons are realeased, and a different element is formed. The different element is?

What is the molarity of a solution prepared by dissolving 1.56 g of gaseous hcl (molar mass = 36.5 g into enough water to make 26.8 ml of solution?

Elementary row operations on an augmented matrix never change the the solution set of the associated linear system. True or False?

Element A has an electronegativity of 2.20. Element B has an electronegativity of 3.44. The bond of molecule AB is then best described as a: