Why did mendeleev leave blanks in his early version of the periodic table?

A transmission system at a radio station uses a blank to convert a direct current into a high frequency alternating current

Which suborbitals of the highest energy level will be filled for every ion, regardless of its charge? only the s only the p the s and the p the s, p, and d

A blank is a condition that strays from normal homeostasis.

How many moles of CaCl2 have you delivered to the flask if you add 20.53mL of 0.511 M CaCl2 from the buret

What in matter can change

explain why the hydrogen atoms in a hydrogen gas molecule form nonpolar covalent bonds but the oxygen and hydrogen atoms in water molecules form polar covalent bonds

The equation 2 N O 2 in equilibrium with N 2 O 4 represents a system,

How does the calorie compare to the metric unit the joule? How do you calculate a calorie? Is it the same for all types of food?

Under which conditions would the solubility of a gas be greatest? A. high pressure and high temperature B. high pressure and low temperature C. low pressure and high temperature D. low pressure and low temperature

How many milliliters is 0.55 L? O A. 1000 ml OB. 0.00055 mL O C. 550 ml D. 55 mL