11. Which one of the following contains the same number of atoms as 7 g of iron?
(a) 4 g of aluminium (b) 4g of magnesium (C) 4g of sulphur
(d) 3 g of carbon (e) 4 g of calcium

i don't see a text, but i am gonna assume this *orbit* the curved path, usually elliptical, described by a planet, satellite, spaceship, etc., around a celestial body, as the sun.

water at room temperature is flowing through a pipe with pressure taps located 10 ft apart along one section of the pipe, which are connected to a mercury (s=13.6) manometer.

answer; the numbers of valence electrons in the acetic acid molecule (ch3co2h) is 24;