1) Use a magnet to remove iron fillings. (Mix of salt and gravel left.)
2)Add water to the mixture of salt and gravel. Salt will dissolve in water.
3) Filtrate gravel. (Salted solution is left.)
4) Evaporate water, and salt will be left.
The question is too broad. Depends of the battery and depends where do you connect it to.
define first a battery reaction and where it is connected to define if the reaction is endo or exothermic.
If a battery reaction is exothermic when it is connected to a circuit may be endothermic when it is charged (reverse reaction).
some batteries at low temperature tends to work less, that suggest, they may need absorb some energy from the surroundings.
Answer:
98.08 g/mol
Explanation:
In order to find the molar mass of a substance, you add together the mass of the total number of moles of each element in the substance.
H2SO4 contains:
2 mol H (1.01 g/mol)
1 mol S (32.06 g/mol)
4 mol O (16.00 g/mol)
2(1.01) + 32.06 + 4(16.00) = 98.09 g/mol
Para encontrar la masa molar de una sustancia, suma la masa del número total de moles de cada elemento de la sustancia.
H2SO4 contiene:
2 mol H (1.01 g/mol)
1 mol S (32.06 g/mol)
4 mol O (16.00 g/mol)
2(1.01) + 32.06 + 4(16.00) = 98.09 g/mol
Answer:
4.52×10^24
Explanation:
N = n × Na
where; N = no. of bananas
n = no. of moles
Na = Avogadro's constant
Which is 6.02×10^23
N = 7.5 × 6.02×10^23
N =4.515×10^24