The atomic number of an element is the total number of which particles in the nucleus?

a. neutronsc. electronsb. protons

Which answer is a scientifically accurate description of velocity? Question 5 options: The car traveled 70 mph north to Atlanta on Interstate 75.

Consider a system consisting of a cylinder with a movable piston containing 106 gas molecules at 298 K at a volume of 1 L. Consider the following descriptions of this system: Initial system, as stated in the problem statement.

the reaction of magnesium with hydrochloric acid carried out in a calorimeter caused the temperature of water to change from 25.0 Celsius to 36.0 Celsius. In this reaction 3760J of energy was released. What mass of water was present?

List the experimental evidence that led to the development of these atomic models: Thomson's, Rutherford's, Bohr's.

A submicroscopic particle suspended in a solution has a volume 1.3um^3. What is this volume in liters?

When delta h is negative the reaction will be endothermic?

Why the atoms k2so4 bond

Whats the relationship between the temperature and the density of a substance

If you can smell a cleaning solution from across the room, you are experiencing the result of which liquid property? viscosity surface tension cleavage planes volatility

What is the effect of 1 mol dm-3 hydrochloric acid on a bulb? Explain why this effect happens.