It is an element. Aluminun foil is aluminum prepared in thin leaves.
Just look at the name, it tells you the longest C chain. Ending with hexane means that the longest carbon chain is 6 C's long.
Conduction - touching hot pot
Convection - oven cycling warm air
Conduction - touching a warm coffee mug
Heat from a fire - radiation
Heat from the sun to solar panel - radiation
Warm water rising - convection
Answer:
7.46 g
Explanation:
Equation for the reaction can be represented as:
1 mole of phosphoric acid is equivalent to 1 mole of ammonium phosphate in the above reaction; and as such;
numbers of moles of phosphoric acid = numbers of moles of ammonium phosphate
Given that the mass of phosphoric acid = 4.9 g; we can determine the number of moles of phosphoric acid in the process.
mass = 4.9 g
molar mass = 98 g/mol
numbers of moles =
= 0.05 mole
Therefore, the mass of ammonium phosphate can be determine:
mass = number of moles × molar mass
mass of ammonium phosphate = 0.05 mole × 149.09 g/mol
mass of ammonium phosphate = 7.4545 g
mass of ammonium phosphate ≅ 7.46 g
The answer is the el second one since it is a physical change