Convert 0.400 moles of BF3 to molecules

What is the P0H of a solution of HN03 that has [0H-] = 9.50 x 10-9 M?

Which of the following could not happen to an igneous rock?

In a double replacement reaction, the ions of two compounds exchange places in an aqueous solution to form to new compounds. true or false

What's the ratio in the compound iron (II) sulfide?

What defines an exothermic reaction? O A. A reaction that needs heat added O B. A reaction that possesses enthalpy O c. A reaction that relies on collisions O D. A reaction that produces heat

A 1.50-g sample of hydrated copper (II) sulfate was heated carefully until it had changed completely to anhydrous copper (II) sulfate () with a mass of 0.957 g. Determine the value of x.

The reaction rate between reactants Z and Y is proportional to the cube of [Z]. What is the rate law for this reaction?

A metal surface becomes dull because of continued abrasion. chemical or physical

What types of tissues build the digestive system?

Chemical bonds? A.) Combine compounds to form elements B.) Hold atoms together to form compounds C.) Are always covalent D.) Are always ionic