<span> If mass remains the same while the volume of a substance increases and the density of the substance will decrease or, volume decreases and density increase, 'cause density equals mass divided in volume, which means that volume and density are inversely proporcional</span>
The correct answer is (4) prevent future terrorist attacks.
Answer: 120g/mol
Explanation:
Molar mass of 1 mole of CH3COOH is ( 12 +( 1 x 3) + 12 +16 + 16 + 1) = 60g/mol.
Therefore; Molar mass of 2 moles would be; 60 x 2 = 120g/mol.
Answer:
54°C
Explanation:
Hello,
To find the temperature of the gas, we would need a relationship between kinetic energy and temperature.
K.E = 3/2RT/Na
Where K.E = kinetic energy
R = ideal gas constant
T = temperature of the ideal gas
Na = Avogadro's number
2K.E₁ = K.E₂ (required)
Since both constant (R and Na) are equal,
K.E = T (direct proportionality)
But T = 27°C
T2 = 2 × 27 = 54°C
To double the kinetic energy of a helium gas at 27°C the temperature of the gas should be increased to 54°C
