DETERMINE THE UNKNOWN MINERAL: Scale Test Mineral 10 diamond 9 corundum 8 topaz 7 quartz 6 feldspar 5 apatite 4 fluorite 3 calcite 2 gypsum 1 talc Mineral H. Density, g/cc tellurium 2 2.07 galena 2.5 7.58 anglesite 2.5 - 3 6.4 chalcocite 2.5 - 3 5.6 copper 2.5 - 3 9.0 gold 2.5 - 3 19.3 silver 2.5 - 3 10.5 arsenic 3.5 5.7 barite 3 - 3.5 4.4 dolomite 3.5 - 4 2.9 platinum 4.5 21.5 willemite 5.5 4.0 magnetite 6 5.18 pyrite 6 - 6.5 5.02 pyrolusite 6 - 6.5 5.0 cassiterite 6.5 6.9 diamond 10 3.52 Volume of water displaced = 0.051 L Mass: 981.0, 908.1, 908, 981 g Density: 19,235 19 192.35 19.2 g/cc Hardness: = 4, 3, 1, 5.5, 2.5 - 5, 4.5, 1.5, 3, 2 Determine the unknown mineral. Unknown mineral: Platinum or Gold
Answers: 3
Chemistry, 21.06.2019 18:00
Construct the hypothetical phase diagram for metals a and b between room temperature (20c) and 700c, given the following information: * the melting temperature of metal a is 480c. • the maximum solubility of b in a is 4 wt% b, which occurs at 420c. • the solubility of b in a at room temperature is 0 wt% b. • one eutectic occurs at 420c and 18 wt% b–82 wt% a. • a second eutectic occurs at 475c and 42 wt% b–58 wt% a. • the intermetallic compound ab exists at a composition of 30 wt% b–70 wt% a, and melts congruently at 525c.• the melting temperature of metal b is 600c. • the maximum solubility of a in b is 13 wt% a, which occurs at 475c. • the solubility of a in b at room temperature is 3 wt% a.
Answers: 1
Chemistry, 21.06.2019 23:00
The drawing represents the movement of particles in a substance. what changes of state can this substance undergo
Answers: 1
Chemistry, 22.06.2019 03:10
The covalent compound acetylene, which is the fuel of the oxyacetylene torch used by welders, has the molecular formula c2h2. the covalent compound benzene, a commercial solvent, has the molecular formula c6h6 each of these covalent compounds contains carbon and hydrogen atoms in a one-to-one ratio. would it be correct to write the chemical formulas of each as ch? explain.
Answers: 1
Chemistry, 22.06.2019 06:40
Which statement correctly describes metallic bonds? a. they form when certain atoms lose electrons and other atoms gain electrons. b. they involve an attraction between anions and cations. they always involvpoth a metal and a nonmetal. d. they can only form between atoms of the same element. e. they form because electrons can move freely between atoms.
Answers: 3
DETERMINE THE UNKNOWN MINERAL: Scale Test Mineral 10 diamond 9 corundum 8 topaz 7 quartz 6 feldspar...
History, 21.09.2020 04:01
Mathematics, 21.09.2020 04:01
Mathematics, 21.09.2020 04:01
Health, 21.09.2020 04:01
Mathematics, 21.09.2020 04:01
History, 21.09.2020 04:01
English, 21.09.2020 04:01