If 4g H2O is reacted with an excess of CH3COF, 4.44g HF can be produced. What is the percent yield if 0.67g HF is actually produced? CH3COF + H2O → CH3COOH + HF

You are making a solution of calcium chloride dissolved in water. you add solid, stir, and it dissolves. you add just a spatula tip full, stir, and the solid does not dissolve. how could you describe the solutions before and after adding the spatula tip amount

Which atom or ion is the largest? a. k b. k+ c. ca d. ca2+ e. li

As air becomes more dense, (select all that apply) o. air weighs less o. gas molecules are closer together o. air is colder o. air weighs more o. gas molecules are further apart o. air is hotter