A 45.8g sample of a metal at 90.6C are added to 150g of water at 34.2°C. The final temp is 36.8°C. What is the specific heat of the metal?

gas

explanation:

smoke is the matter of a gas

answer carbon and three oxygen atoms;

the seeing the electronic configuration we can say that the element is fluorine.

fluorine is the most electronegative element in the periodic table.

but by only seeing the configuration we cannot say about its reactivity because we don't know if its configuration after excitation or by addition of electrons.

but if not then, it is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions. as the most electronegative element, it is extremely reactive: almost all other elements, including some noble gases, form compounds with fluorine.