1. hydrogen gas burns in air according to the equation below.
2h2(g) + o2(g) → 2h2o)
(a) calculate the standard enthalpy change. ah°298 for the reaction represented by the equation above
(the molar enthalpy of formation, ah for hom) is -285.8 kj molat 298 k.)

Which of the following would be an accurate picture of the earth during the summer time of the northern hemisphere?

Ill give brainiestif one neutron initiates a fission event that produces two neutrons in the products, how many new reactions can now be initiated? if each of the neutrons produced in the first fission event then initiates a fission event that produces one neutron in the products, how many new reactions can now be initiated by each neutron? how many neutrons in total were produced by the two fission events described?

What is the temperature of 0.750 mol of a gas stored in a 6,850 ml cylinder at 2.21 atm? . 2.95 k 5.24 k 138 k 246 k