1. How many grams of Mno, are required to obtain 0.028 moles?
2. How many mole are present in 5.7 L of methane
(CH4) gas at STP?
3. How many molecules of lactose, C12,H22, O11,are present in 12 g of substance?
4. How many grams are required for 1.5 x 102° molecules of Cl2 gas?
Please help

Chemical kinetics what was the rate of reaction in trial 3? choose the closest answer.

Is laundry detergent an acid or a base?

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.