the barometric pressure measured outside an airplane at 9km (30,000ft) was 259 mmHg .Calculate pressure in KPa.

14. many depressants reduce small muscle control, making it harder for a. you to steer b. your mind to consider complex problems c. the eye to scan, focus, or stay still d. the kidneys to filter alcohol out of the bloodstream

Is 343 in the sequence -5, -2, 1, 4, 7

All chemicals, even safe chemicals, such as sodium chloride( table salt), are toxic if exposure is high enough. (true or false)