What ion must be present for a compound to be considered a base?

Which of the following changes is an exothermic chemical change Boiling water Melting ice Chopping wood Fireworks exploding

Manganese (II) oxide, lead (IV) oxide, and nitric acid react to produce permanganic acid, lead (II) nitrate, and water according to the reaction above. How many moles of each product could be produced by the reaction of 8.

A 22.0 mLmL sample of a 1.16 MM potassium sulfate solution is mixed with 14.8 mLmL of a 0.860 MM barium nitrate solution and this precipitation reaction occurs: K2SO4 (aq) + Ba (NO3) 2 (aq) →BaSO4 (s) + 2KNO3 (aq) K2SO4 (aq) + Ba (NO3) 2 (aq) →BaSO4

Why are methanol and acetone not suitable solvents for extracting organic compounds from aqueous solutions?

Why can liquids change shape but solids cannot

Magnesium carbonate--->? + carbon dioxide

Determine the number of moles 28.8 g Br2

Which statement best explains why heating a liquid affects its viscosity?

In which type of unconformity is the eroded rock tilted or folded? disconformity nonconformities angular unconformity scarp unconformity

What's the difference between an iconic bond and a covalent bond? A. an iconic bond Is a bond between charged atoms, while a covalent bond is a bond between neutral atoms B.