Which of these is a baseball?

Which element is present in all organic compounds? (1) nitrogen (2) oxygen (3) carbon (4) sulfur

How much water should be added to 30 l of a 40 acid solution to reduce it to a 30 solution?

The diagram below shows a cell placed in a solution. What will happen to the cell?

What are Photosyntheis? . how plants make their food . how aminal hurt . how plant get water . how rain is made

A sample of gas has a pressure of 3.00 atm at 25 degrees Celsius. What would the pressure be at 52 degrees Celsius if the volume stays constant? Which gas law does this problem represent?

In terms of pH what would happen if you mixed vinegar with a solution of ammonia. What type of product will form?

A nurse measures the volume of a drop of medicine. The volume of 1 drop of medicine is 1.66mL. What is the volume in deciliters of 1000 drops of medicine? Write your answer as a decimal.

10. Copper (i) bromide reacts with magnesium metal: 2 CuBr + Mg → 2 Cu + MgBrz If 0.253 moles of magnesium react in this way, a. How many grams of CuBr are consumed?

Objects 1 and 2 float as shown in the beaker below. Object 1 barely floats while 2 floats above surface. The density of the liquid in the beaker is 3.2 g/cc.

A 3.75 g sample of limestone, CaCO3, contains 1.80 g of oxygen and 0.450 g of carbon. What mass of calcium is present in the sample? a. 1.00 g b. 1.25 g c. 1.50 g d. 1.75 g e. 2.00 g