Which of the following is the correct formula for barium (ll) sulfate?

a) Bas

D) Bas

c) BaSO4

a) Ba2SO4

What scientific law explains that energy can change

Which element on the periodic table is the most electronegative? A) Cesium B) Fluorine C) Hydrogen D) Radon

which law is associated with interia

Formula for water what does the lack of a subscript after those O indicate

The accepted ΔH for a reaction is - 42.3 kJ/mol. A student has performed a lab experiment to determine the enthalpy change of the same reaction. Calculate the percent error Student 1 Exp. ΔH (kJ/mol) Trial 1 - 43.8 Trial 2 - 41.0 Trial 3 - 42.7

What is the [H3O+] of a solution with a pH of 2.56? 2.56 M, 2.75 x 10-3 M, 363 M, or - 0.408 M

What is the law of conservation of energy? A) energy can only be destroyed B) energy will always be renewed. C) energy cannot be created of destroyed. D) energy can never change forms.

Most metals are solid at room temperature, malleable, ductile, good conductors of heat and electricity, and react in acids to produce hydrogen gas. which of the properties mentioned is a chemical property? a. are malleable b. reacts with acids c.

Silver tarnishes when it comes into contact with hydrogen sulfide in the air. physical property or chemical property

When a volcanic irruption adds new rock to existing land and forms new islands is it considered destructive?