The capacity of a muscle to continue contracting over a period of time without fatigue is called:

A. muscular strength.

B. muscular endurance.

C. cardiovascular endurance.

D. power.

How could the government enforce ethical standards of scientific experiments? A. The government could encourage scientists to make up their own minds about ethics. B. The government could take away research funds if ethical standards are not met. C.

Which is an example of kinetic energy? (A) chemical energy (B) conservation energy (C) electrical energy (D) resting energy

Which tool can be used to measure the volume of a liquid to one decimal place? a beaker a graduated cylinder an Erlenmeyer flask a test tube

Consider the Williamson ether synthesis between 2-naphthol and 1-bromobutane in strong base. A reaction was performed in which 0.51 g of 2-naphthol was reacted with a slight excess of 1-bromobutane to make 0.29 g of 2-butoxynaphthalene.

Composites (such as carbon-fiber-reinforced polymers) have the properties of both metals and plastics. True or false

Write the structire of the salt that forms when diethylamine is mixed with hydrochloric acis

The heat of combustion of propane, C3H8, is 2220 kJ/mol. The specific heat of copper is 0.385 J/g°C. How many grams of propane must be burned to raise the temperature of a 10.0 kg block of copper from 25.0°C to 65.

Which is an example of Temporal Isolation? A. Flowers that bloom in different months. B. Birds that have different mating calls C. Fruits flies that mate in different locations. D. Squirrels that have different fur colors

A chemical reaction can start when enough activation energy is added to the reactants. Do you think the activation energy for chemical reactions in living things is high or low / Explain your answer

20 Which statement describes a reversible reaction at equilibrium? (1) The activation energy of the forward reaction must equal the activation energy of the reverse reaction.