How man moles of Al2O3 are formed in the reaction 4Al (s) + 3O2 (g) 2Al2O3 (s)

If you ate a food with 230 cal per serving and you had 2 servings then how many k cal did you consume?

A chemist measures the amount of nitrogen gas produced during an experiment. He finds that 147g of nitrogen gas is produced. Calculate the number of moles of nitrogen gas produced.

For the reaction represented by the equation ch4 + 2o2 ® co2 + 2h2o, how many moles of carbon dioxide are produced from the combustion of 100. g of methane?

Data that shows consistent, regular, repetitive form displays a pattern?

What element has the electrons configuration of [Ar]4s^2 3d^5

Thorium-229 is a highly radioactive isotope. Use the chart to determine the half-life of Th-229. A) 7,340 years B) 8 years C) 16 years D) 22,020 years

Which of the following is true about a municipal bond with a put option? (A) An investor will exercise the option to put the bond if yields rise significantly. (B) An investor must have the issuer's permission to put the bond.

A certain ore is 37.3% nickel by mass how many kilograms of this ore would you need to dig up to have 10.0g of nickel

What would be the change in pressure in a sealed 10.0 L vessel due to the formation of N2 gas when the ammonium nitrite in 1.00 L of 0.500 M NH4NO2 decomposes at 25.0°C?

Read the given equation. Na2O2 + CO2 → Na2CO3 + O2 What volume of O2 gas is produced from 2.80 liters of CO2 at STP?