Calculate the mass in grams of 3.94×1024 molecules of formaldehyde. the chemical formula for formaldehyde is ch2o.

Mass in grams of formaldehyde = 196.51 g

Explanation:

No. of molecules of formaldehyde =

Moles is related with number of molecules as:

Avogadro's no. =

moles of formaldehyde

Molar mass of formaldehyde = 30.03 g/mol

Molar mass is related with mass as:

Mass = Moles × Molar mass

        = 6.544 × 30.03

       = 196.51 g

answer: e.   sour taste

explanation: acids are those substances which dissociates in water to give ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. acids are sour in taste. example: hcl

bases are those substances which dissociates in water to give ions or accepts ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. bases are bitter in taste. bases are slippery in nature.