What is the mass defect of a fission reaction that releases 2.9 x 10" J of energy?

3.2 x 10-25 kg

9.7 x 10-20 kg

9.7 x 1020 kg

3.1 x 107 kg

Does adding coefficients to a chemical equation disobey the law of definite proportions? Explain your answer.

Consider a hypothetical reaction in which A and B are reactants, and C and D are products. If 26 grams of A completely reacts with 12 grams of B to produce 14 grams of C, how many grams of D will be produced.

Which of the following statements is true concerning biodiversity? Select one: Biodiversity is the lack of a diversity of species in an area Biodiversity is the diversity of species in an area, which makes an ecosystem better prepared for major

Which dinosaur was able to hold its prey in its mouth firmly due to teeth that curved backward?

At STP, iodine, I2, is a crystal, and fluorine, F2, is a gas. Iodine is soluble in ethanol, forming a tincture of iodine. A typical tincture of iodine is 2% iodine by mass.

Is a sample of liquid nitrogen more dense than a sample of nitrogen gas

You have a balloon containing 1 L of air at STP in a vacuum chamber. What will the volume of the balloon be when you reduce the pressure by half and increase the temperature to 373 K?

Which method will correctly determine whether the forces on an object are balanced or unbalanced? A. Multiply the forces in the horizontal direction by the forces in the vertical direction. B.

Carbon is found in all known forms of life. Which statement best describes why carbon is uniquely suited to forming macromolecules such as those found in living organisms? A. Carbon forms large compounds that are not chemically reactive. B.

Name a type of asteroid and give a description.