The piece of unknown metal is in thermal equilibrium with water such that Q of metal is equal to Q of the water. We write this equality as follows:
-Qm = Qw
Mass of metal (Cm)(ΔT) = Mass of water (Cw) (ΔT)
where C is the specific heat capacities of the materials.
We calculate as follows:
-(Mass of metal (Cm)(ΔT)) = Mass of water (Cw) (ΔT)
-68.6 (Cm)(52.1 - 100) = 42 (4.184) (52.1 - 20)
Cm = 1.717 -----> OPTION C
True. tell me if Im right so I can fix my next mistake for the next person I answer
Answer:
1 1/3 and 2 5/6
Step-by-step explanation:
First you find 1 on the number line. Then, since it's divided into sixths, you convert 1/3 to 2/6. Then you can move 2 places to the right from 1.
To find 2 5/6 you first start at 2. Then you move 5 places to the right and plot your point.
This is the concept of algebra, to solve the expression we proceed as follow;
m-=2+m
this can be written as:
-m=2+m
-m-m=2
-2m=2
multiply both sides by -1/2
-1/2(-2m)=2*(-1/2)
m=-1
the answer will therefore be m=-1