The metalloids include Boron, Silicon, and Germanium, and they are positioned to the right of metals and to the left of nonmetals. Since that is not available as an option, the most accurate description would be: The metalloids are situated below nonmetals and above metals in a group.
Explanation:
Los datos proporcionados son los siguientes.
Calor de vaporización (
) = 45.4 kJ/mol
Capacidad calorífica (
) = 0.903 
Supongamos que el alcohol usado es 
y su masa es 1.12 g. Además, la masa del bloque de aluminio es de 73.0 g.
Primero, calculamos los moles de alcohol () de la siguiente manera.
Número de moles de alcohol = 
= 
= 0.0186 mol
<pPor lo tanto, el calor absorbido por el alcohol (
) es igual al calor perdido por el aluminio (
)
= 
12.71 = 
Por lo tanto, podemos concluir que la temperatura final del bloque es 12.3^{o}C[/tex].
Volume = nRT/P
n = number of moles (particles)
R = universal gas constant (0.0821)
T = temperature (in Kelvin)
P = pressure (in atm)
(Assuming there is 1 mole of Helium involved in the chemical reaction) we need to convert grams to moles: 12.0g He x 1 mol He/4 molar mass of He = 3 mol He.
Transform Celsius to Kelvin: 100*C + 273.15 = 373.15 K.
Now we can construct the volume equation: (3mol)(0.0821)(373.15)/1.2atm = 76.6 L of Helium gas.
