Answer:
35. Beaker 36. Stirring Rod 37. Bunsen Burner 38. test tube brush 39. Crucible tongs Number 34 is mortar and pestle
Explanation:
I hope its help and got it right anyway, some science tools and kitchen equipments have similar description that makes it easy.
Answer:
E) less than 7
Explanation:
pH is defined as the negative logarithm of the concentration of hydrogen ions.
Thus,
pH = - log [H⁺]
pH scale generally runs from 1 to 14 where pH = 7 represents neutral medium, pH < 7 represents acidic medium and pH > 7 represents basic medium.
Strong acids dissociate completely and when they react with base they form a salt of weak base and strong acid.
For example, 
is a weak base and 
is the hydrochloric acid.
So,
<u>Thus, the salt is of weak base and strong acid which corresponds to pH less than 7.</u>
<span>3.5 moles CaCO3 (1 mole carbon/1 mole CaCO3) = 3.5 moles</span>
Answer :
Heating takes place during the process of Evaporation, Melting, Sublimation.
Cooling takes place during the process of Freezing, Condensation, Deposition.
Explanation :
Heating : It means thermal energy releases.
Cooling : It means thermal energy absorbs.
Evaporation : It is a type of vaporization process in which a liquid changes into gas phase by providing heat.
Melting : It is a process in which a solid changes into liquid phase by providing heat.
Sublimation : It is a process in which a solid changes directly into gas phase without passing through a liquid phase.
Freezing : It is a process in which a liquid transform into a solid phase at low temperature.
Condensation : It is a process in which a water vapor(gas) changes into liquid state at low temperature.
Deposition : It is a process in which a gas transforms directly into a solid phase without passing through a liquid phase.
