Answer:
Size of a Nucleus
This nucleus has 3 protons (which gives the nucleus a charge of +3, identifying it as the element Lithium) and 4 neutrons (giving it a total mass number of 7).
Explanation:
Respuesta:
3000 ft
914.4 m
9.144 × 10⁴ cm
Explicación:
Paso 1: Información provista
Longitud: 1000 yd
Paso 2: Convertir 1000 yd a pies (ft)
Usaremos el factor de conversion 1 yd = 3 ft.
1000 yd × 3 ft/1 yd = 3000 ft
Paso 3: Convertir 1000 yd a metros (m)
Usaremos el factor de conversion 1 yd = 0.9144 m.
1000 yd × 0.9144 m/1 yd = 914.4 m
Paso 4: Convertir 914.4 m a centimetros (cm)
Usaremos el factor de conversion 1 m = 100 cm.
914.4 m × 100 cm/ 1 m = 9.144 × 10⁴ cm
I believe the answer would be gold. Correct me if I’m wrong. Have a nice day and hope this helps! :)
Answer:
Heat of combustion = 5.6 ×10³ kj/mol
Explanation:
Given data:
Mass of sucrose = 1.010 g
Initial temperature = 24.92 °C
Final temperature = 28.33 °C
Heat capacity of calorimeter = 4.90 KJ/°C
Heat of combustion = ?
Solution:
ΔT = 28.33 °C - 24.92 °C = 3.41 °C
Q = - c. ΔT
Q = 4.90 KJ/°C . 3.41 °C
Q = - 16.7 kj
Number of moles of sucrose :
Number of moles of sucrose = mass/ molar mass
Number of moles of sucrose = 1.010 g / 342.3 g/mol
Number of moles of sucrose = 0.003 mol
Heat of combustion:
Heat of combustion = Q/n
Heat of combustion = - 16.7 kj/0.003 mol
Heat of combustion = -5.6 ×10³ kj/mol