Urgent!

How does a model differ from a law or a theory?

a.

Models are universal

c.

Theories are only accurate under limited conditions

b.

Models are for all situations

d.

Models are only useful in limited situations

Boyle's Law for gases is: a. true for all gases only accurate at room temperature b. just a model and therefore accurate for no real gas c. accurate for most gases in most temperature ranges d.

Is this equation completely balanced? 2C8H8 + 25O2 8CO2 + 18H2O

Which of the following statements does NOT describe the alkali metals? a. Most are shiny gray solids that are very soft. b. They easily gain an electron to form ions with a charge of - 1. c. They are not found uncombined in nature. d.

What is used to calculate volts

This is a material through which electricity can flow? A. Conductor B. Circuit C. Motor D. Resistor

What is the empirical formula of a compound composed of 32.9g of potassium and 6.73 g of oxygen

Glucose is not made from which of the following

Rank the temperatures from the highest to the lowest. 133F 351K 25C 273K 146C 58F 95F

Calculate the density of sulfuric acid if 35.4 mL of the acid weighs 65.14 g.

Where the single machos?