Which Ion has the same electron configuration as an Ar atom 1. Cl -
2. F -
3. Li+
4. Na +

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?

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?

Which property of a rock remains unchanged by mechanical weathering? a. total surface area b. size and shape c. mineral composition d. sharpness