The right answer is ...
number 3
Scientists with different backgrounds and areas of expertise each contribute to the solution
Answer:
(A) Battery in a flashlight
Explanation:
Because the chemicals in the battery are being converted to light and heat energy from the bulb!
Cr 1 x 2 O 1.5 x 2 = Cr2O3
Answer:
0
Explanation:
CaBr₂ is a compound, so it shouldn't have a charge--it's not an ion. But let's check to make sure.
Calcium has a charge of +2.
Bromine has a charge of -1, but there are two Br, so the charge is -2.
+2 + -2 = 0, so the overall charge is 0!
