Which illustrates the conservation of matter? O A.
ZnO + H2 -> Zn + 2 H2O
ОВ.
CO + H2O -> CH3OH
O C.
2 H2S + 302 -> 2 H2O + 2 SO2
OD.
4 Fe + 3 Oz -> 3 Fe2O3

The biomedical technique in which a part of the brain is destroyed with electric current is known as a. electroconvulsive therapy b. prefrontal lobotomy c. bilateral cingulotomy d. tardive dyskinesia

Northern was a learned a fairly cold climate caused by see one from the atlantic ocean, but se was real and tends to be much warmer, sonia look good causes difference. a.cool wins cannot blow across a leg into the south mountains, b.prevent cold air from blowing over into south sea,c.the south is at much higher elevation, so it is closer to the sun, d.suppose early and has a sperience a drastic climate change in the past few years.

Type the correct answer in the box. tungsten carbide is becoming popular for making jewelry. a chemist is examining a sample of tungsten carbide (chemical formula wc). what is the percent composition of tungsten in this compound? round your answer to the nearest whole percent. the percent composition of tungsten is what %?