Sodium (Na) has 11 protons and 12 neutrons. What is its isotope notation?

A. Na-11

O B. Na-12

C. Na-23

D. Na-34

How does the A Hreaction relate to the A He of molecules involved in a reaction? A. A Hreaction = A Hf, reactants B. AHreaction = A Hf, products - AHf, reactants C. A Hreaction = AHf, products D. A Hreaction = A Ht, products + AHf, reactants

What causes a hemisphere on earth to have summer

For 4NH3 (g) + 5O2 (g) → 4NO (g) + 6H2O (g), if you begin with 16.00 g ammonia and excess oxygen, how many grams of water will be obtained?

What is the molecular formular of a compound whose empirical formula is ch3 and whose molar mass is 30 g/mol?

State the formula for finding the volume of a cylinder Will give brainlist!

When making broccoli cream soup, the broccoli and aromatics should be A. sweated. B. puréed. C. simmered. D. burned.

Plants absorb light energy and store that energy in the form of what? A water B carbon dioxide C sugar D oxygen

If 21/825g hydrogen sulfate ion in 5litr water solotion, what the percentage of its ionization?

A redox reaction will occur at 298 K when zinc metal is placed in a solution that is 0.5M Fe (NO3) 3. Is this true or False.

Sodium chloride is stirred into water to form a solution. in this case, what are sodium chloride and the water?