Yes it does.
40% aqueous solution of formaldehyde is known as Formalin.
Formalin is 40% solution of formaldehyde not an acid.
Formaldehyde is a mixture of 40% formaldehyde, 8% methyl alcohol and 52% water.
Muscular tissues (40%), epithelial tissues (A.K.A surface cells - ks3) & connective tissues (like tendons etc.)
To calculate the amount of water needed, first determine the mass of formaldehyde in the final solution. Since the solution is 40.0% formaldehyde by mass, the mass of formaldehyde is 40.0% of the final solution mass. Subtract the mass of formaldehyde in 425 g from this value to find the mass of water needed to prepare the solution.
Formalin is a saturated solution of formaldehyde, water, and typically another agent, most commonly methanol. In its typical form, formalin is 37% formaldehyde by weight (40% by volume), 6-13% methanol, and the rest water.
40 percent !
40 percent.
29 percent of 40 percent = 0.29 x 40 percent = 11.6 percent
40 percent of 60 is 2,400%
120
74 percent of 40 is 29.6