Two technicians are discussing testing coolant for proper ph. technician a says that coolant has a ph above 7 when new and becomes lower with use in an engine. technician b says that oat and hoat coolants have a lower ph when new compared to the old green iat coolant. which technician is correct?

Embryos of different species look very similar, which shows that the organisms share a ancestor.

Listen base your answer to the question on the information below. propane is a fuel that is sold in rigid, pressurized cylinders. most of the propane in a cylinder is liquid, with gas in the space above the liquid level. when propane is released from the cylinder, the propane leaves the cylinder as a gas. propane gas is used as a fuel by mixing it with oxygen in the air and igniting the mixture, as represented by the balanced equation below. c3h8(g) + 5o2(g) → 3co2(g) + 4h2o() + 2219.2 kja small amount of methanethiol, which has a distinct odor, is added to the propane to consumers detect a propane leak. in methanethiol, the odor is caused by the thiol functional group (–sh). methanethiol, ch3sh, has a structure that is very similar to the structure of methanol. what is the correct structural formula for a molecule of methanethiol

In pqr m< p=60 m< q= 30 and m