One liter equals the volume of a cube ten centimeters on a side

2. Where do traits come from? 3. There are sections of DNA called genes. What do genes do?

A student used a DCP solution (standardized to 9.98x10-4M) to analyze a sample of extract from 2.50g of solid food. The titration required 22.49mL of DCP. 87.00% of all the ascorbic acid in the food was collected in the extract.

Which of the following statements is true? The Earth's orbit around the sun is a perfect circle. The Earth spins from east to west. Lines of latitude are used to divide Earth into 24 time zones.

What should you do if your hypothesis is not supported by the experiment you conduct

Hard water often contains dissolved Ca2 + and Mg2 + ions. One way to soften water is to add phosphates. The phosphate ion forms insoluble precipitates with calcium and magnesium ions, removing them from solution. Suppose that a solution is 5.

What is the pH of pure water

What is the molar mass, in grams, of a mole of an element equal to? O A. the number of electrons in the element O B. the atomic weight of the element OC. the atomic number of the element OD. the number of neutrons in the element

What substance is not a compound

Consider the following exothermic reaction and predict how the change below will affect the concentration (increase, decrease, stay the same) of each component in the system as the equilibrium is reestablished.

How does the electron structure of atoms change when they form chemical bonds