PLZ HELP Which feature of a balanced chemical equation demonstrates the law of
conservation of mass?
A. It has equal numbers of each type of atom in its reactants and
products.
OB. It has a reaction arrow between the products and reactants of a
chemical reaction.
OC. It shows the coefficients and subscripts of each formula shown in
the equation.
D. It shows the chemical formula for each substance in its reactants
and products

number of molecules / avogadro's number * molecule molecular = mass

explanation:

we define a gram-molecular weight as the mass of one mole of any element or compound. a mole contains avogadro's number of units (molecules) –  

6.022

x

10

23

. so, dividing the number of molecules by avogadro's number gives us the number of moles. multiplying that by the molecular weight gives us the mass. from the periodic table we find the gram-molecular weight of u to be238 and of f to be19. so,  

u

f

6

will have a gram-molecular weight of 352g.

smooth muscle is composed of involuntary muscles found within the walls of organs and structures such as the esophagus, stomach, intestines, and blood vessels. those muscles push materials like food or blood through organs. unlike skeletal muscle, smooth muscle can never be under your control.

b) nuclear ive learned that in a pedtrodic table

un recipient conține 6,4 moli de gaz. gazul hidrogen reprezintă 25% din totalul kilometrilor din container. în cazul în care presiunea totală este de 1.24 atm ceea ce este