Which nuclear symbol correctly completes the following nuclear reaction?

1/0N+235/92U ___ + 143/55Cs+31/0n + energy

1) 4/2He

2) 92/37Rb

3) 90/37Rb

4) 143/55Cs

Calculate the pH of a 0.22 M ethylamine solution.

What drives an atom to form a covalent bond? nuclear charge or a filled outer shell?

How many neutrons are in 7.00 g of 13c?

Which components do all circuits have in common? Check all that apply. - energy source - voltmeter - wires - ammeter - device that needs electrical energy

An Arrhenius base yields which ion as the only negative ion in an aqueous solution

What is anisotropy. Explain briefly with example.

Which is measured using a calorimeter

5) Solid lithium metal is added to an aqueous solution of magnesium chloride forming lithium chloride solution and solid magnesium a. If you begin the reaction with 15.0 g of lithium and 25.

Which element easily loses one electron to form a positive ion? A. Magnesium (Mg) B. Lithium (Li) C. Nitrogen (N) D. Fluorine (F)

What is an indication a chemical reaction has occurred? A.) Formation of gas B.) Boiling of a substance C.) Melting of a substance D.) Freezing of a substance