Answer the following question given this paragraph: Reactant concentrations are highest at the beginning of a reaction. The plot of [C] versus tis a curve with a slope that becomes steadily less positive. Q: Reactant concentrations are highest at which part of a reaction? Choices: - ending - middle - concurrent - beginning A:
beginning
Answer the following question given this paragraph: Discussion for (a) This value is the net work done on the package. The person actually does more work than this, because friction opposes the motion. Friction does negative work and removes some of the energy the person expends and converts it to thermal energy. The net work equals the sum of the work done by each individual force. Strategy and Concept for (b) The forces acting on the package are gravity, the normal force, the force of friction, and the applied force. The normal force and force of gravity are each perpendicular to the displacement, and therefore do no work. Solution for (b) The applied force does work. Q: Friction does negative work and removes some of the energy the person expends and converts it to which kind of energy? Choices: - erosion - hydro - evaporation - thermal A:
thermal
Q: Answer the following question given this paragraph: Acceleration is a vector, and thus has a both a magnitude and direction. Acceleration can be caused by either a change in the magnitude or the direction of the velocity. Instantaneous acceleration a is the acceleration at a specific instant in time. Deceleration is an acceleration with a direction opposite to that of the velocity. Q: Acceleration is a vector, and thus has a both a magnitude and what else? Choices: - temperature - pressure - wavelength - direction A:
A: direction
Question: Answer the following question given this paragraph: Different radioisotopes may vary greatly in their rate of decay. The more unstable their nuclei are, the faster they decay. Q: Radioisotopes may vary greatly in their rate of decay, decaying faster if their nuclei are more what? Choices: - mature - immature - stable - unstable A:
Answer: unstable
*Question*
Answer the following question given this paragraph: Mammals are endothermic vertebrates that have four limbs and produce amniotic eggs. Defining traits of mammals are fur or hair and mammary glands. Mammals are noted for the many different ways they can move and their specialized limbs. Q: Mammals are endothermic vertebrates that have four limbs and produce what type of eggs? Choices: - gymnoic - umbilical - epithelial - amniotic A:
**Answer**
amniotic
(Question)
Answer the following question given this paragraph: Cell Layers of the Epidermis. The epidermis consists mainly of epithelial cells. Q: The epidermis consists mainly of what type of cells? Choices: - cytoplasm - blood cells - crystalline - epithelial A:
(Answer)
epithelial