Can someone solve this for me showing the work? i'm stuck, i'd appreciate it.

first, molecular mass of Zn=65 g

molecular mass of HNO3=63 g

in the given reaction,

10 × 63 g HNO3 reacts with 4×65 g Zn.

i.e. 1.49 g HNO3 reacts with (260/630) ×1.49

=0.61 g Zn.

now the number of moles in Zn is

given mass/ molecular mass=0.61/65=0.0093 moles

Again,

no. of atoms= 0.0093× 6.023×+0^23

=5.6×10^21 atoms

in chemistry, adhesion and cohesion are attractive forces that exist between molecules. they hold the molecules together from each other. they are different in that adhesive force exists between molecules of different substance while cohesive force happens between molecules of same substance.

adhesion between water and glass causes water molecules at the edge of water and glass interface to climb up the wall in a narrow glass tube. this is called capillary action. cohesion is what gives glass its shape and causes water to form a droplet.