Hỗn hợp M gồm 0.25mol ancol no đơn chức x và 0,25mol axit cacboxylic y cùng là mạch hở nếu đốt cháy hoàn toàn lượng M trên thì thu được 22,4 lít khí co2 và 18gam h2o

in chemistry, a solution’s concentration is how much of a dissolvable substance, known as a solute, is mixed with another substance, called the solvent. the standard formula is c = m/v, where c is the concentration, m is the mass of the solute dissolved, and v is the total volume

ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.