State whether the following are elements, compounds or mixtures Salt
Sugar
Hydrogen
Oxygen
Tomato sauce
cake batter
Nitrogen
Aluminium
Gulab Jamun
Water
Salty water

hydrogen, nitrogen, oxygen, aluminium are elements

salt, sugar, tomato sauce, cake batter, salty water are mixtures

Explanation:

all the elements in the group halogens in the periodic table are compounds.

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.

the dependant variable is spilled water

the independent is the heat