If the half-life of a radioactive substance is 600 years, what fraction of the original material is left after 1,800 years?

Do ionic compounds or covalent compounds conduct electricity

What is the correct formula for chromium (3) oxide

How does sediment form?

In this experiment, you will change the temperature and particle size of the antacid tablet and observe how these changes affect reaction. In the space below, write a scientific question that you answered by doing this experiment

Which of the dollowing isotopes have 8 neutrons in the nucleus? O-15 O-17 C-13 C-14

Who created the periodic table and in what year?

Why is uranium 235 the most commonly used isotope for nuclear fission in current uses in nuclear power generation?

Based upon the pH scale, a vegetable with a pH of 5.3 would be

How many grams of Cl are in 535 g of CaCl2?

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