An inflatable toy starts with 1.05 moles of air and a volume of 5.17 liters. when fully inflated, the volume is 8.00 liters. if the pressure and temperature inside the toy don’t change, how many moles of air does the toy now contain? a. 2.05 mol b. 1.62 mol c. 1.55 mol d. 0.679 mol

1.625 mol.

Explanation:

where, P is the pressure of the gas in atm.

V is the volume of the gas in L.

n is the no. of moles of the gas in mol.

R is the general gas constant.

T is the temperature of the gas in K.

n₂V₁ = n₁V₂

n₁ = 1.05 mole, V₁ = 5.17 L.

n₂ = ??? mole, V₂ = 8.0 L.

∴ n₂ = n₁V₂/n₂ = (1.05 mole)(8.0 L)/(5.17 L) = 1.625 mol.

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.

my dad did alot of meth and ace cheeks