Blood contains different parts, mainly plasma and red blood cells. When people give blood, there are machines that can separate these parts. However, when looking at blood, its different parts cannot be seen. What is blood? A compound containing many mixtures
b molecule containing many elements
C. An element containing many atoms
D. A mixture containing many compounds

Cryolite, na3alf6(s), an ore used in the production of aluminum, can be synthesized using aluminum oxide. start this question by first balance the chemical equation.1.) balance the equation: - alo3(s)+naoh(l)+hf(> na3alf6+h2o(g). 2.) if 17.5 kilograms of al2o3(s), 51.4 kilograms of naoh(l), and 51.4 kilograms of hf(g) react completely, how many kilograms of cryolite will be produced? 3.)which reactants will be in excess, (al2o3, naoh, or hf) 4.)what is the total mass of the excess reactants left over after the reaction is complete in kg?

To calculate percent by mass, use the equation below: calculate the percent by mass of each element. %n = % %h = % %o = %

An atomic nucleus is composed ofa)protons.b)protons and neutrons.c)protons and electrons.d)protons, neutrons, and electrons.