Calculează masa de precipitat care se formează în reacția dintre 75g de soluție de clorură de calciu de concentrație 15% și azotatul de argint(Se dau masele atomice Cl=35,5;Ca=40;Ag=108;N=14;O=16).

Why is the bond angle in a water molecule less than the bond angle of methane? a. the central oxygen atom in water has two lone pairs of electrons, whereas the central carbon atom in methane has no lone pairs. b. the central hydrogen atom in water has one lone pair of electrons, whereas the central carbon atom in methane has two lone pairs. c. the central oxygen atom in water has four lone pairs of electrons, whereas the central carbon atom in methane has only one lone pair. d. the central oxygen atom exerts more repulsive force on surrounding atoms than the central carbon atom in methane does. reset next

How do you lengthen a pattern piece? (family and consumer science, sewing)

Give more examples of this type of heat transfer: