Which species is oxidized in the following reaction? N2O + H2 - > H2O + NH3

A) N+

B) H2

C) H+

D) N3

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

Which statement best explains the value of the Periodic Table 1. It provides a view of the elements organized by their properties 2. It includes charts with the International System 3. The structure is hard to understand 4.

Which of the following is an example of pseudoscience? A) Astronomy B) Astrology C) Vulcanology D) Hydrology

When a sodium atom becomes an ion the size of the atom?

Roland is measuring a physical property of an object. He records the measurement: 3.12g/cm3 Roland was most likely measuring which of the following: Question 1 options: density mass weight volume

What is true about a solution of 1.0 M HF

How do the nuclides 16 8o and 15 8o differ?

As light moves from one material into the next, which of the following affects how much the light waves will refract, or bend? Angle at which the ray strikes the medium Color of the material Density of the material Temperature of the light wave

In your own words, define the "law of conservation of mass"

Give the chemical name for Sn (CNO) 2