Is table salt a sulfide mineral? What kind of crystal is halite crystal (rock salt)? Is mica a carbonate mineral? Is orthoclase an oxide mineral? Is galena a sulfide mineral? Is corundum an oxide mineral? Are silicate minerals volatile? Are all crystalline solids minerals? Is gypsum a sulfa...
The liquid oxygen supply system usually consists of a bulk storage unit or reservoir that’s housed in a permanent place in the home and a refillable, portable unit that you can carry around. The reservoir and portable units have a design similar to that of a thermos bottle, consisting of ...
Seamless transitions from one form to another was an effect Vermeer exploited when he painted theGirl’s facial features.Girl with a Pearl Earringis considered to be atronierather than a portrait of a specific person; this may be why her facial features are idealised and somewhat indistinct, bu...
Lead metal can be extracted from a mineral called galena, which contains 86.6% lead by mass. A particular ore contains 68.5% galena by mass. If the lead can be extracted with 92.5% efficiency, what mass of ore is required to make a lead sphere with a 6.50 A 1.506 g...
and eyelids. Egyptian kohl was probably made of galena or lead sulfite, malachite, and charcoal or soot. The Babylonians and ancient Greeks also used black eye cosmetics, as did the later Romans. Cosmetics of all sorts fell out of use in Europe after the fall of Rome, though eye cosmetics...