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Calculate the freezing point of a solution containing 0.250 m glucose (i = 1). For water: Kf = 1.86 °C/m**                   ΔTf​=i⋅Kf​⋅m  A.−0.465 °CB. −0.930 °CC. −1.86 °CD. 0.465 °C  

Question 3d

Question 1a

Please access the exam below and enter your solutions/responses in the answer fields that correspond to each question. Mock exam (PDF)

20. If k = 0.500 M⁻¹s⁻¹, [A]₀ = 0.200 M, what is [A] after 5.0 s? A.0.133 MB. 0.067 MC. 0.050 MD. 0.080 M

18.For a reaction with rate law: If [A] doubles and [B] remain constant, by what factor does the rate change? A.2B. 3C. 4D. 8

12.The rate constant for a first-order reaction is 0.0450 s⁻¹.What is the half-life? A.6.60 sB. 15.4 sC. 30.8 sD. 0.065 s

16. Given data: [A] (M) Rate (M/s) 0.10 0.020 0.20 0.080 What is the order with respect to A? A.ZeroB. FirstC. SecondD. Third

17. If Ea = 50.000 J/mol, R = 8.314 J/mol·K, T = 298 K, and A = 1.0 × 10¹³ s⁻¹, what is k? A.1.7 × 10⁴ s⁻¹B. 1.7 × 10³ s⁻¹C. 1.7 × 10² s⁻¹D. 1.7 × 10¹ s⁻¹                R=8.314 J/mol·K

The price level is a