Asample of a substance has a mass of 4.2 grams and a volume of 6 milliliters. the density of this substance blank) ( grams/milliliter.

0.7 my teacher just gave me the answer i got too lazy to explain why

- Density of the substance is .

Solution:- Density is directly proportional to mass and inversely proportional to volume. The density formula is:

where d stands for density, M stands for mass and V stands for volume.

Given mass is 4.2 grams and the volume is 6 mL. Let's plug in the values of mass and volume in the formula to calculate the density.

So, the density of the substance is .

ch3 [ch2]14cooh

explanation:

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.