Answer:
33.8.
Explanation:
Hello,
In this case, since the used equation is:
Whereas the specific heat is 4.184 J/(g°C), we compute the mass as follows:
Thus, the mass turns out:
And without units:
33.8.
Best regards.
First one is balanced because all of the elements in reactant and product have equal number of atoms.
second one is not balanced therefore you need to add coefficient to balance it. so its CaCl2 + 2NaHCO3 = CO2 + CaCO3 + H2O + 2NaCl
both of them seem double replacement reaction
Hope it helps!
~ Rabin
The answer would be A) Physical Change. When the silver tarnishes it is still remnants of silver. If it were B, the silver would change into a different substance.
Elements always exist as pair of atoms called molecules .
Explanation:-
- The material which has only one types of similar atoms called element .
- Ex:-Sodium,Carbon etc
