It is a liquid at room temp.
To solve the concentration, it is equal to the mass of the calcium ions divided by the total mass of the solution.
C = mass of ions / mass solution
C = ( 8.5 x 10 ^-3 g ) / 490 g
C = 1.7 x 10^-5
since the choices are in ppm, multiply it by 10^6
C = (1.7 x 10^-5 ) 10^6
C = 17 ppm
It's internal energy or heat energy.
Answer:
The pan on the bottom right with the arrows pointing up.
Explanation:
conduction is the transfer of heat through touching surfaces, so when you place the pan on a hot stove, the heat heats up the bottom of the pan, and then the water in it.
B, bc the atomic mass is 12 and carbon has 6 protons (atomic number=# of protons).
to get electrons, u subtract atomic number (# of protons) from atomic mass, which gives u 6 electrons.
with 6 protons and 6 electrons, they are balanced.
not like a, which will have 6 protons but 5 electrons, meaning Carbon-11 will look for one more electron to balance things.