17. Consider the following reaction: 4Al(s) + 302(8) 2A1,03(s)
It takes 2.00 L of pure oxygen gas at STP to react completely with a certain sample of
aluminum. What is the mass of aluminum reacted?
18. ​

Two metal blocks that have slightly different temperatures are placed next to one another. after five minutes, they both have lower but equal temperatures. according to the law of conservation of energy, what  most likelyhappened? energy was created inside the blocks.energy was destroyed inside the blocks.energy was absorbed into the blocks from outside the system.energy was transferred from the warmer block to the cooler block.

The empirical formula of a compound is ch2o and its mass is 120 amu/molecule, what is its formula?

The following questions a24 - a26 relate to 100 ml of 0.0150 m solution of benzoic acid (c6h3cooh). ka(c6h3cooh) = 6.4 x 10^-5. what is the ph of the solution after the addition of 1 x 10^-3 moles of naoh? you may assume no volume change to the solution upon addition of the naoh.