Calculate q, the heat released in each reaction.

Use the equation q = cmåt.

(Use c = 4.18 J/g.°C and the total mass, m.)

Record to 2 significant figures.

Reaction 1:

Reaction 2:

RETRY

Which sentence describes an example of sublimation? A. Dew forms on leaves on a cold morning. B. Liquid deodorant sprayed on a person's body evaporates. C. Dry ice changes to carbon dioxide when kept in an open container. D.

A sample of gas has a mass of 0.673g. Its volume is 250.0mL at a temperature of 83 degrees C and a pressure of 747 torr. The sample is composed of which of the following gases? (A) Xe (B) Ar (C) SO3 (D) CO2 (E) H2

Hydrogen bond notes

Describe and explain the trends in reactivity in different groups of the periodic table, using your knowledge of electronic structure. [6 mark]

Which part of an atom determines how it will react with other atoms?

Prior to the development of DNA fingerprinting, blood type could be used to determine possible parentage. Although it might prove someone was not a parent, it could not show if someone was positively the parent, only that he or she might be a parent.

At room temperature, which of the following is the most compressible? A. One liter of oxygen, a gas B. One liter of water, a liquid C. One liter of mercury, a liquid D. One liter of iron, a solid

A spring scale is best defined as

Which of the following describes a critical component of a "fair test"? A fair test should include several confounders. A fair test will always support the scientist's hypothesis. A fair test should have a specific methodology for data collection.

Exponatial notation is used for a / writing very small numbers b/writing very large numbers c/avoid tedious work d/all above