.130 g sample of an unknown metal x reacted with hydrochloride acid according to the following chemical equation. The volume of hydrogen gas collected over water was 92.0 mL at 20 C and 763 mmHg. Calculate the atomic mass of unknown metal and identify the metal from the periodic table

Imagine that twenty i.u.’s of enzyme z were catalyzing the above reaction for one minute, under vmaxconditions, in a 3.00 ml assay volume. the assay is buffered with 20 mm phosphate buffer, ph 7.60. what will the ph be at the end of that one minute?

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.

What is the approximate vapor pressure when the gas condenses at 70 degrees celsius