Most adult amphibians can obtain oxygen through?

Given the balanced equation: 2 h2 (g) + o2 (g) → 2 h2o (l) how many grams of h2o are formed if 9.00 mol h2 (g) reacts completely with an excess of o2 (g) ? the molar mass of h2o is 18.0 g/mol.

For a particular reaction, ΔH° is 34.2 kJ and ΔS is 99.2 J/K. Assuming these values change very little with temperature, over what temperature range is the reaction spontaneous in the forward direction?

When hydrocarbons are burned in a limited amount of air, both CO and CO2 form. When 0.430 g of a particular hydrocarbon was burned in air, 0.446 g of CO, 0.700 g of CO2, and 0.430 g of H2O were formed. Required: a.

The limiting reactant in a chemical reaction is the reactant that a. is used up at the end of the reaction. b. is left over after the reaction. c. has the largest number of atoms. d. has the fewest number of atoms.?

Which of the following conversions does the value of the conversion factor depend upon the formula of the substance? a. moles of any substance to number of particles. b. mass of any substance to moles. c. volume of gas (STP) to moles. d.

What happens to ice as it melts? A. The average kinetic energy of the water molecules decreases. B. The released energy increases the intermolecular forces. C. The absorbed energy breaks apart intermolecular forces. D.

Why do scientists think that the solar nebula is important for earth

How many liters in. 75 moles of methane gas at stp?

Is B2O3 molecular or ionic

In which scenario does radiation occur? A. warming soup on a stove B. drying towels at the beach C. cooking eggs in boiling water D. warming a sore muscle with a hot pack