PLEASE HELPP For each of the reactions, calculate the mass (in grams) of the product formed when 15.29 g of the underlined reactant completely reacts. Assume that there is more than enough of the other reactant.

a) 2K(s)+Cl2(g)––––––→2KCl(s) (c12(g) underlined)

b) 2K(s)+Br2(l)––––––→2KBr(s) (Br2(l) underlined)

c) 4Cr(s)+3O2(g)––––––→2Cr2O3(s) (3o2 underlined)

d) 2Sr(s)–––––+O2(g)→2SrO(s) (2Sr(s) underlined)

Subduction zones occur on earth where dense oceanic crust dives under more buoyant continental crust. these boundaries are characterized by a deep ocean trench next to a high continental mountain range, large numbers of earthquakes and volcanoes. all of this is further evidence for the a) big bang theory b) origin of the species eliminate c theory of plate tectonics d theory of natural selection 4 sedimentary rocks found high in the himalayen mountain

State the formula for density in words and mathematical symbols

What is the ima of the 1 st class lever in the graphic given? 2 3 0.5