A sample of water has a mass of 100.0 g. Calculate the amount of heat required to change
the sample from ice at -45.0°C to liquid water at
75.0°C. Use the chart to complete the multiple
steps required to arive at the final answer. Type in
your answers below using 3 digits.

hloride, what is the mass of calcium in

explanation:

the answer is 0.42 is that is an option. this question provides no info

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.