Astudent is studying the temperature changes that occur in water when different types of solute, and different masses of a particular solute, are dissolved in it. study 1 the student began with four flasks containing 100.0 ml of water each. she took 2.00 g each of four different chemical compounds and dissolved each compound in a different flask. the initial temperature of the water and the compounds was 25.0°c. the flasks of water showed changes in temperature after the compounds were dissolved in them. these changes are shown in the bar graph below.

alkaline metals are lithium, sodium, rubidium, potassium, cesium and francium.

alkali metals have electronegativity from 0.7 to 1, lowest in periodic table of elements, which means that alkali metals (i group in periodic table) has positive oxidation number in compounds.

electronegativity is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself.

alkaline metals (far left in main group) have lowest ionizations energy and easy remove valence electrons,

for example, potassium is the alkali metal and has a single valence electron in the outer electron shell.

electron configuration of potassium is: ₁₉k 1s²2s²2p⁶3s²3p⁶4s¹.

they can not exist alone in nature, because they are very reactive.

answer: i dont know the answer but this might

explanation:

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the cold front replaces the warmer air at the ground level changing the wind to be breezy and denser.there is also an immediate drop in the temperature.

i think its 100

i hope this !