Type the correct answer in the box. Express the answer to three significant figures. Given: CH4 + 2O2 → CO2 + 2H2O, ΔH = -890 kJ/mol How much energy is released when 59.7 grams of methane (CH4) reacts with oxygen? The combustion of 59.7 grams of methane releases kilojoules of energy.

How does the principle of electromagnetism explain the interaction between earth’s magnetic field and the solar wind?

Select the correct answer from each drop-down menu.describe what happens to a carbon-11 atom when it undergoes positron emission.the decay of a carbon-11 atom _1_, and this causes it to emit _2_.options for 1: > changes a neutron into a proton> changes a proton into a neutron> is hit with a neutron> reconfigures its protons and neutronsoptions for 2: > a negatively charged electron-sized particle> a positively charged election-sized particle> two atoms and several neutrons> two neutrons and two protons

Which property of a rock remains unchanged by mechanical weathering? a. total surface area b. size and shape c. mineral composition d. sharpness