B the color of the metal . Hope this helps
Answer:
When the temperature of an object increases, the average kinetic energy of its particles increases. When the average kinetic energy of its particles increases, the object's thermal energy increases. Therefore, the thermal energy of an object increases as its temperature increases.
Explanation:
BTW I GOT THE ANSWER FROM KRISTINA
I’m not sure but I think it’s Earthquake Detector
Answer:
n = 6.06 x 
mol
Explanation:
n =?
m = 3.06 x 10-³ g
M (H5) = 5 x 1.01 (Since we only want hydrogen)
Atomic mass of C = 12.01
Atomic mass of H is 1,01, etc.
Having this data, we can use the Molar mass formula and change it so we can know the quantity of matter (n) in moles, and we just replace it.
M = 
⇔ n = 
⇔ n = 
⇔ n = 6.06 x mol
Note: The numbers I've used may be different from yours, by a small difference. I don't know if it's the case, but hope it helped.
<span>Calcium, a group 2 element, naturally loses two electrons in order to become electronically stable. PO43- naturally gains 3 electrons to become more electronically stable. In order to bond with electroneutrality, it is necessary for the ions to bond to create a molecule with 3 Ca2+ ions and 2 PO43- ions, since 3 Calcium ions have a charge of 6+ and 2 phosphate ions have a net charge of 6-. This creates a molecular net charge of 0.</span>
