Answer: d :The blue and orange soccer balls; they have more mass than the black soccer ball, but changed speed by the same amount.
Answer:
Chemical equation:
3S(s) + 2Fe(s) → Fe₂S₃(s)
Explanation:
Iron metal react with solid sulfur and produced slid iron(III) sulfide.
The chemical reaction is given below:
Chemical reaction:
S + Fe → Fe₂S₃
Balanced chemical equation:
3S + 2Fe → Fe₂S₃
Balanced chemical equation with physical state:
3S(s) + 2Fe(s) → Fe₂S₃(s)
Ionic equation can not be written because all reactant and products are in solid form.
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Entropy is the degree of disorderliness in a system. Among the phases, solid
has the most ordered structure. Therefore, the lowest entropy. The least ordered is the gas phase which represents the highest entropy. Therefore, the correct answer is option D, steam. </span>
Answer:
Mass = 99.2 g
Explanation:
Given data:
Volume of oxygen = 15 L
Mass of oxygen = ?
Pressure of oxygen = 75 psi ( 75/14.696 = 5.10 atm)
Temperature of oxygen = 28°C (28+273 = 301 K)
Solution:
The given problem will be solve by using general gas equation,
PV = nRT
P= Pressure
V = volume
n = number of moles
R = general gas constant = 0.0821 atm.L/ mol.K
T = temperature in kelvin
Now we will convert the temperature.
n = PV/RT
n = 5.10 atm× 15 L / 0.0821 atm.L/ mol.K × 301 K
n = 76.5 atm.L/24.71 atm.L/ mol
n = 3.1 mol
mass of oxygen:
Mass = number of moles × molar mass
Mass = 3.1 mol × 32 g/mol
Mass = 99.2 g