For the complete combustion of 1.000 mole of methane gas at 298 K and 1 atm pressure, ΔH° = - 890.4 kJ/mol. What will be the amount of heat released when 1.97 g of methane is combusted under these conditions?

Which particle is J. J. Thomson credited with discovering electron neutron proton photon

Which of the following are likely to form an ionic bond? A. Carbon and hydrogen B. Carbon and sulfur C. Magnesium and sulfur D. Nitrogen and oxygen

Venus's atmosphere 1. has almost the same chemical composition as Earth's. 2. is predominantly made of acid droplets. 3. shows very high levels of humidity. 4. is composed mostly of carbon dioxide.

The isomerization of 3-phosphoglycerate (3PG) to 2-phosphoglycerate (2PG) has a ΔG°' = + 4.4 kJ/mol. If [2PG] = 4.0 mM and [3PG] = 22.2 mM, in which direction will the reaction move to reach equilibrium at 37°C?

25. The periodic table is based on an element's A. atomic number. B. molecular size. C. molecular mass. D. atomic mass.

On the periodic table, calcium and bromine are located in period 4. What is one difference between the two elements? A. Calcium atoms are more reactive than bromine atoms. B.

Who's theory states that atoms are made up of empty space with electrons around a positively charged mass?

O3 (g) + NO (g) O2 (g) + NO2 (g) Write the equalibrium expression

You are given 10.00 mL of a solution of an unknown acid. The pH of this solution is exactly 2.36. You determine that the concentration of the unknown acid was 0.3535 M. You also determined that the acid was monoprotic (HA).

What mass of copper is consumed in the reaction with hydrochloric acid if 10.0 g of gas is collected?