Draw the most reasonable lewis structure of a molecule that contains a n atom, a c atom, and a h atom. include any formal charges if needed

19 An effective collision between reactant particles requires the particles to have the proper (1) charge and mass (2) charge and orientation (3) energy and mass (4) energy and orientation

What is the mass of 1 mole of lithium? 6.94 grams 0.432 grams 3.0 grams 2.31 grams

Which statement accurately describes the atoms of a specific element? explain your answer in complete sentences. A. A Neon, Ne, atom contains 10 electrons outside the nucleus and 11 neutrons inside the nucleus. OR B.

What happens when an acid neutralizes a base

Which answer choice lists the number and type of elements in a compound in the way that is close to their actual arrangement? chemical formula structural formula space-filling model ball-and-stick model

Which of the following correctly describes how metals behave in an ionic bond? Metals lose their valence electrons and form positive ions. Metals lose their valence electrons and form negative ions.

A pharmacist measures the mass of a powdered drug. The mass is 506 mg. What is the mass in grams? Write your answer as a decimal.

Which of these is a source of sediment? A. Fragments if other rocks B. Chemicals and minerals dissolved in water C. Sea shells D. All of the above

Entropy is greater at higher trophic levels than at lower levels ... True of False

If the caffeine concentration in a particular brand of soda is 2.85 mg/oz, drinking how many cans of soda would be lethal? Assume that 10.0 g of caffeine is a lethal dose, and there are 12 oz in a can.