Why is it necessary for the measuring devices to be clean

If there are 2 grams of product produced by the chemical reaction, how many grams of reactant were consumed? A) 0 grams B) 1 gram C) 2 grams D) 4 grams

24 what is the correct name for the compound cocl?

Star has a diameter of 4,680,000,000 units. Express this number in scientific notation. The star has a diameter of 4.6846.80.468 x 109.

Which will ensure laboratory safety during the experiment? Check all that apply. 1. Using beaker tongs to handle the hot beaker 2. Reading the thermometer accurately 3. Checking the beaker for chips prior to heating on the hot plate 4.

Which of the following steps will speed up the reaction between a baking soda solution and a calcium chloride solution in a beaker? Keep the beaker in a freezer. Keep the beaker in sunlight. Pour the solutions into a flat dish.

List the symbols for all the elements with electron configurations that end as follows. Each n represents an energy level.

Why is it necessary for the measuring devices to be clean

Copper consists of two naturally occuring isotopes. their masses are 62.930 amu and 64.928 amu. calculate their abundances.

Which statement is true about inorganic compounds? A. They are not made of atoms. B. They contain carbon. C. They are not made from living things. D. They are all elements.

Which domain do you find the most interesting why