What observations can we make that are the result of the rotation of the earth on its axis? (How do we know that the earth is rotating on an axis? What do we see or experience that shows us that the earth is rotating on an axis?)

What Is a high-temperature physical state of matter in which atoms lose their electrons?

A student measures the mass of a sample as 9.67g. Calculate the percentage error, given that the correct mass is 9.82

156 g C12H22O11 (sucrose) is dissolved into 4.0 L of solution. What is the molar concentration of the solution? Report your answer with the correct number of significant figures.

Classify the following as an endothermic or exothermic reaction: a. making popcorn in a microwave oven. b. a burning match. c. boiling water. d. burning rocket fuel. e. the reaction inside a heat pack

The compound FeCI3 is made of

2. An object experiences an acceleration, g, when it is on the surface of a planet of radius R. What will be the acceleration on the object after it has been moved to a distance of 4R from the center of the planet? A) 168 B) 48 C) 1/4 g D) 1/16 g

For a successful TLC experiment, you need to pay attention to the details. From the list of instructions and tips below, select the detail that is NOT important to a TLC experiment. O O Do not disturb the developing chamber.

The word atom means invisible?

A pycnometer weighs 25.60 g empty and 35.55 g when filled with water at 20°C. The density of water at 20°C is 0.9982 g/ml. When 10.20 g lead is placed in the pycnometer and the pycnometer is again filled with water at 20°C, the total mass is 44.83 g.

How does weathering affect the surface area of a rock? Explain your answer.