Please help me with these 3 questions. I don't need an explanation, just the number.
1. Rigo left 62 grams of ice in a closed container. When he came back he found that the ice had melted. How much water would be expected to have in the container?
2. Rust is formed when iron reacts with the oxygen in moist air. Suppose 100 g of iron metal rusts. We weigh the rust and find that the rust has a mass of 143 g. What mass of oxygen reacted with the iron?
3. 15 grams of hydrogen and 7.5 grand of oxygen were placed in a beaker. An explosion happened inside the beaker that produced water. The beaker was never opened. How many grams of water were produced?
Thank you for anyone who has taken the time to answer these questions. I really do appreciate you :)