If you have 38 grams of CH4 how many moles of CH4 do you have
0.42 moles
2.3 moles
609.6 moles
38 moles

2.3 moles

Explanation:

From the question given, we obtained the following data:

Mass of CH4 = 38g

Molar Mass of CH4 = 12 +(4x1) = 12 + 4 = 16g/mol

Number of mole =?

Number of mole = Mass /Molar Mass

Number of mole CH4 = 38/16 = 2.3mol

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.

conduction is the transfer of thermal energy (heat in transfer) due to collisions between the molecules in the object. collisions between adjacent atoms and molecules transfer kinetic energy from the warmer to the cooler object. the objects must be in physical contact.