(2) Iron rust requires the participation of oxygen and water. There is neither water nor air on the moon, so iron products on the moon are not easy to rust.
(3) The chemical equation of TiO _ 2 reduction by CO is 2CO+TiO _ 2? High temperature? . ? Ti+2CO2，
Abortion thinks that CO should be emptied for a period of time before the alcohol lamps in C and A are lit, without considering that carbon monoxide is toxic and will pollute the air. Liang Xiao thinks that alcohol lamps in C and A should be turned on first, and then CO should be turned on, without considering that carbon monoxide is flammable and will explode when mixed with air; The correct operation sequence should be as follows: first, turn on CO for a period of time, and at the same time light up the alcohol lamp at C to exhaust the air in the glass tube, and then light up the alcohol lamp at A (or collect the tail gas with a balloon first, and then light up the alcohol lamp);
(4) Let the mass of Fe2O3 in the sample be X, then
3CO+Fe2O3？ High temperature? . ? 2Fe+3CO2
160 1 12
X 5.6g g
160112 = x5.6g x = 8g.
The mass fraction of Fe2O3 in ilmenite is 8g 10g× 100%═80%.
So the answer is: (1) combustion-supporting, fuel, low density, 2H2+O2? Light it? . ? 2H2O
No, there is neither water nor air on the moon.
(3)①2CO+TiO2？ High temperature? . ? Ti+2CO2 and ②CO are toxic and pollute the air; CO is mixed with the air in the container and may explode after ignition; First, turn on CO for a period of time, and at the same time, light the alcohol lamp at C to exhaust the air in the glass tube, and then light the alcohol lamp at A (or collect the tail gas with a balloon first, and then light the alcohol lamp).
(4) The mass fraction of Fe2O3 in ilmenite is 80%.