Which is a living part of an ecosystem?

A. soil

B. bacteria

C. animal bones

D. minerals

To what category of elements does an element belong if it is a poor conductor of electricity

Describe an application where a series circuit might work better than a parallel circuit

How many atoms are in 2.50 mol of hydrogen?

A liquid mixture of 0.400 mole fraction ethanol and 0.600 methanol was placed in an evacuated (i. e., no air) bottle and after many days is now in equilibrium with its vapor.

At 570. mm Hg and 25°C, a gas sample ne (in mm Hg) at a volume of 1250 mL and a temperature of 175°C and 25°C, a gas sample has a volume of 2270 mL. What is the final pressure

A small 15 kilogram canoe is floating downriver at a speed of 4 m/s. What is the canoe's kinetic energy?

Liquid water is heated until it boils and becomes water gas. Which statement is true about the water?

You are conducting an experiment on plant growth. You take a plant fresh from the soil that weighs 5 kilograms (kg). Then you dry the plant overnight and determine the dry weight to be 1 kg.

What is the ratio of Fe+3 ions to O2 - ions in a neutral compound? a. 1:2 b. 2:1 c. 2:3 d. 3:2

What is the specific heat capacity of a 17.5g sample of an unknown metal that releases 6700J of heat when it cools from 90 to 25 degrees C?