4.Iron reacts with steam according to the equation: 3Fe(s) + 4H2O(g) -> Fe3O4(s) + 4H2(g)
What mass of tri-iron tetroxide, Fe3O4, will be formed by the complete reaction of 1.68g of iron?

Why does the sun appear to be the brightest star in the sky? a- its apparent brightness is much greater than other stars. b- it burns more gas, making it brighter than any other star. c- it is the largest star in the galaxy, so it is the brightest star. d- its relative distance to earth is closer than the other stars.

8.98 dm3 of hydrogen gas is collected at 38.8 °c. find the volume the gas will occupy at -39.9 °c if the pressure remains constant.

At the current rate, a graph of carbon dioxide produced by fossil fuels over time would slope upward slope downward be horizontal be vertical