The scientist who discovered the law of conservation of mass and is also called the father of modern chemistry is

When a hydrogen electron makes a transition from n = 3 to n = 1, which of the following statements is true?I. Energy is emitted.II. Energy is absorbed.III. The electron loses energy.IV. The electron gains energy.V. The electron cannot make this transition.

An insoluble, nonreactive solid metal sphere weighting 21.52g is added to 28.7mL of water in a graduated cylinder. The water level rises to 32.8mL. Calculate the density of the metal in g/mL

When determining the density of a pure liquid or a solution, the temperature of sample must be measured. Why does the density of a liquid sample depend on the temperature?

Magnesium is an alkali metal.

Stoichiometry indicates the proportions in which various substances react in a chemical reaction.

Solutions can only be made by dissolving a solid into a solvent.

The power and authority to choose one of two or more alternative behaviors is known as:

Cohen and Feldberg proposed five ethical standards that can be derived from the social contract between society and the individuals. Which of the following is not one of these standards?

In the video we watched concerning military defense, what is depicted as the most lethal fighter jet ever built?