When aluminum oxide reacts with hydrofluoric acid, how many moles of aluminum fluoride are produced when 150 grams of aluminum oxide are used?

D Question 19 Which statement best describes a major difference between different types of elements? The atoms of different elements have different numbers of protons and electrons. Only some elements are composed of atoms with electrons.

Matter that flows to fit its container includes?

Which of the following is a characteristic of nonmetals? a. non-metals often conduct electricity b. nonmetals are not ductile c. nonmetals are often shiny and hard d. nonmetals are often malleable

In a chemical reaction, energy can be A. released. B. absorbed. C. released or absorbed. D. neither released nor absorbed.

Stress will build until an earthquake occurs if friction along a fault is

How many daughter cells are produced in meiosis?

Sodium chlorite - > sodium chloride + oxygen what type of chemical reaction is represented by this equation

The mixing of which pair of reactants will result in a precipitation reaction? the mixing of which pair of reactants will result in a precipitation reaction?

A balloon has 18.9 moles of hydrogen gas at a volume of 428 L. What would the volume of the gas be if the balloon had 14.0 moles of hydrogen gas left after 1 day?

An analytical chemist is titrating 242.5 mL of a 1.200 M solution of hydrazoic acid HN3 with a 0.3400 M solution of NaOH. The pKa of hydrazoic acid is 4.72. Calculate the pH of the acid solution after the chemist has added 1006.