Draw Lewis structures for each of the following moecules. Show resonance structures, if they exist A) O2 B) N2 C) CO D) SO2

When you mixed 20 grams of magnesium and an excess of nitric acid, 1.7 grams of hydrogen was actually produced. What is the percent yield of hydrogen during this reaction? Mg + 2HNO3 Mg (NO3) 2 + H2 3.3 % 48.5 % 25.7 % 102 % 98 %

4 Recall What holds ionic compounds together?

What are examples of convection?

Which statement is true? Select one: a. Hydroelectric power, a nonrenewable resource, is generated from moving water. b. Oil, a nonrenewable resource, is processed to make jet fuel. c. Propane, a renewable resource, is used in some heating systems.

What is linen composed of

What is 99 times 100

Using complete sentences, explain how large-scale agriculture leads to increased atmospheric CO2?

What is the trend in effective nuclear charge for elements on the periodic table? It decreases across a period but is constant down a group. It increases across a period but is constant down a group.

Which of the following is a benefit of having a standard measurement system that can be used by scientists worldwide

Salt mixed in water is an example of a___ a. solution b. heterogeneous mixture c. colloid d. suspension e. pure substance