Answer: The correct option is A ( Break the crackers into pieces.)
Explanation:
The rate of reaction between two substances can be affected by the following factors:
--> surface area of reacting substances
--> concentration
--> reaction mechanism
--> temperature
--> the presence of a catalyst and
--> pressure ( if gaseous)
Reagents in solution tend to react faster than reagents in solid form. This is because molecules are freer to move about and collide more effectively in solutions. For example, a lump of zinc will not react as fast as powdered zinc with dilute hydrochloric acid to produce hydrogen. This is the same with the reaction between the crackers and soup. To increase the reaction of the substances, the crackers needs to be broken into pieces(thus,increased surface area)
Answer:
The answer is KF.
Explanation:
Ionic bonding occurs, when a metal and a non-metal combines together to form ionic compound. In KF, K is a metal and F is a non-metal.
Answer:
(a) OPTION E=4
b) option E C sp² + C p
Explanation:
DEGREE OF UNSATURATION = C -H/2 -X/2 +N/2 +1
X IS HALOGENS
5-5/2+1/2+1= 4
b) Ethene comprises of two sp2-hybridized carbon atoms (bound to each other by sigma and two atoms each with hydrogen). The remaining unhybridized carbon p orbitals form a pi bond, giving ethene reactivity
Answer:
wave length=speed/frequency
=365/23
wave length=speed/frequency
=365/35000
