The halogens and noble gases are alike because they are all non-metallic elements, with the exception of astatine, a radioactive
Since cells are hard to see the microscope helped them see. scientist were able to actually see cells in tissues placed under the microscope.
<span> 26 protons, 30 neutrons, 26 electrons</span>
Explanation:
The unequal sharing of electrons between the atoms and the unsymmetrical shape of the molecule means that a water molecule has two poles - a positive charge on the hydrogen pole (side) and a negative charge on the oxygen pole (side). We say that the water molecule is electrically polar.
Answer:
How many grams of potassium chloride, KCl, must be dissolved in 500.0 mL of solution to produce a 1.5 M solution? Answer: g 4. What is the molarity of a solution in which 84.0 grams of sodium chloride, NaCl, is dissolved in 1.25 liters of solution? Answer: M 5.
Explanation:
