When performing the nitrate reduction test, the red color observed after the addition of nitrate reagents a and b indicates the presence of:.

What mass of carbon dioxide is produced from the complete combustion of 4.50×10−3 g of methane?

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

If 22.5 liters of oxygen reacted with excess of hydrogen, how many liters of water vapor could be produced?