How many molecules are in 2.50 moles of h2o

When sodium hydroxide is dissolved in water, energy is released as heat to the surroundings l, causing an increase in the solutions temperature. which of the following best describes this type of reaction? a. - exothermic b. - exothermic c.

What is a limitation of using a chemical formula, such as CH1206, to represent a compound? The chemical formula does not show the types of elements that make up the compound.

How many molecules of ammonia are present in 3.0 g of ammonia (Formula = NH3) ? A) 1.2 * 1024 B) 1.8 * 101 C) 1.1 * 1023 D) 2.9 * 10-25 E) 3.6 * 1023

A very simple assumption for the specific heat of a crystalline solid is that each vibrational mode of the solid acts independently and is fully excited and thus cv=3NAkB=24.9 kJ / (kmol⋅K). This is called the law of Dulong and Petit.

An element's atomic number is 65. How many protons would an atom of this element have?

What atom has 14 protons and 14 electrons

What is a diagram showing the forces acting on a coasting bike rider traveling at 25 km/h on a flat roadway

Do all electromagnetic waves travel at the same speed?

Which of the following has the greatest first ionization engergy li, be, b or c

If we know that 10.0 cm3 of ice has a mass of 9.19 g what is the density of ice