2.5 M HCl solution, but what is found in the stock room is 6.0 M HCl. How much of 1. You were unable to copy your mom's specialty "hinilabos na talangka (salted
crablets) and your guests found it too salty. You prepared it by adding 10% salt
add if your mom said that she prepared her specialty by mixing 20 mL of 0.5% salt
(NaCl) instead?
2. In the laboratory, most reagents are concentrated. Suppose you need 100ml of a
the 6M HCI will you use to prepare 100ml of 2.5 M HCI.?
3. A solution of 96% of H2 SO4 by weight has a density of 1.84g/ml at 25*C.
Find
a. mole fraction
b. molality
c. molarity

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.

2b2t

explanation:

2b2t

може ли да зареждате повече информация, моля