A 2.0 mL blood sample contains 0.0049 g of ethanol. Is this suspect legally drunk in the state of Utah? Show your calculations and value for %(m/v) for this blood sample.
A 2.0 mL blood sample contains 0.0049 g of ethanol. Is this suspect legally drunk in...
4. 0.050 g of sample is dissolved in 2.0 mL of ethanol, and this solution is placed in a 2.0-cm polarimeter tube. The observed rotation is clockwise 0.043. Calculate the specific rotations taken at 25°C using the sodium D line.
A breathalyzer is a device used to estimate the blood alcohol content of a suspected drunk driver by measuring the amount of alcohol in one's breath. The fuel cell breathalyzer employs the reaction below: CH2CH2OH(s)+O2(g) --HCH,O,(g)+H2O(g) When a suspected drunk driver blows his or her breath through the fuel cell breathalyzer. the device measures the current produced by the reaction and calculates the percent alcohol in the breath When a suspected drunk driver blows 208 mL of his breath through...
Part A A solution contains 20 mL of ethanol in a total volume of 100 mL. The concentration of this solution is 20 % by volume O 2.0 % by mass 20 % by mass 2.0 M Submit Provide Feedback
Calculate the number of grams of 5.0 % (m/m) NaCl solution that contains 6.30 g of NaCl. Calculate the volume in milliliters of 45 % (m/v) NaF solution that contains 2.0 g of NaF. Calculate the volume in milliliters of 8.5 % (v/v) ethanol solution that contains 30.4 mL of ethanol.
A 155-ml sample of an 8.0 M NaCl solution is diluted to 2.0 L . What volume of the diluted solution contains 10.8 g of NaCl? (Hint: Figure out the concentration of the diluted solution first.)
42. Based on some preliminary measurements, you suspect that a sample of enzyme contains an irreversible enzyme inhibitor. You decide to dilute the sample 100-fold and remeasure the enzyme's activity. (2pts) A. What would your results show if an irreversible inhibitor is present? B. What would your results show if a reversible inhibitor is present?
Calculate the number of grams of 4.4 % (m/m) NaCl solution that contains 6.20 g of NaCl. Calculate the volume in milliliters of 30 % (m/v) NaF solution that contains 4.3 g of NaF. Calculate the volume in milliliters of 7.0 % (v/v) ethanol solution that contains 10.2 mL of ethanol. Help please! I do not understand what to do with the percents.
Calculate the molarity (C2H5OH) of a sample of vodka if a 50-ml sample of the vodka yielded 20.37 grams of ethanol. Show all your work. Given: The density of ethanol is 0.798 g/ml.
2. The average number of cups of coffee drunk each day by a randomly selected sample of 25 students was 4.4. Assume the population standard deviation is 0.5 cups of coffee. Does the sample provide enough statistical evidence to support a claim that students drink 4 cups of coffee per day on average? Test the hypothesis at a 1% level of significance. Perform a 1-sample Z-test of mean to assess the sample evidence. A. State the null and alternative hypotheses...
1. A l64-g sample of HF is dissolved in water to give 2.0 x 10' ml of solution. The concentration of solution is: A) 0.82 M B) 0.16 M C) 0.08 M D) 4.1 M E) 8.2 M 2. You have 75.0 mL of a 2.50 M solution of Na,CrO(ag). You also have 125 mL of a 2.01 M solution of AgNOs(ag), Calculate the concentration of Cro. after the two solutions are mixed together. A) 0.00 M B) 0.309 M...