Bac is a measurement of the amount of alcohol in

Asked by admin @ in Chemistry viewed by 250 People

Blood alcohol concentration (BAC) is a measure of alcohol in your body, expressed as grams of alcohol per 100ml of blood. For a BAC of 0.05, every 100ml of your blood contains 0.05 grams of alcohol. Your BAC can be measured through your breath, blood, and urine. Drivers with an open licence have to keep under a BAC of 0.05.

Scientists estimate the mass of blood in a human body to be approximately 8 percent of body weight. If we assume that 17 % of the alcohol that a person drinks from beer goes into the bloodstream, how many litres of beer can an 71 kg person drink to get a BAC of 0.05? The alcohol content of beer is 6 % volume, and the blood density is 1025kg/m3, the alcohol density is 789 kg/m3.

Answered by admin @


Answer:

A 71 kg person will get a BAC of 0.05 when drinking 0.3442 L of beer

Explanation:

  • The mass of blood in a human body is approximately 8%, so if a person weighs 71 kg, the mass of blood would be:

71 kg * 8/100 = 5.68 kg of blood.

  • Using blood density, we can calculate the volume that 5.68 kg of blood occupies:

5.68 kg * \frac{1m^{3}}{1025kg} = 0.0055415 m³

We convert m³ into mL, keeping the unit that we want to convert to in the numerator; and the unit that we want to convert in the denominator:

0.0055415m^{3}*\frac{1000L}{1m^{3}} *\frac{1000mL}{1L}=5541.5mL

  • Now we calculate the amount of alcohol that would be needed in the bloodstream to get a BAC of 0.05:

\frac{5541.5mL}{100mL}*0.05g = 2.77 g of alcohol are needed in the bloodstream in order to have a BAC of 0.05

  • The amount of alcohol that needs to be ingested is higher than 2.77 g, due to the fact that only 17% of the alcohol goes into the bloodstream, so:

2.77 g *\frac{100}{17} = 16.29 g of alcohol need to be ingested

  • Then we use the alcohol concentration of beer to calculate the volume of beer needed, using the alcohol density. First we convert the alcohol density to g/L, making sure the units that we want to convert cancel each other:

789\frac{kg}{m^{3}}*\frac{1000g}{1kg} *\frac{1m^{3}}{1000L} =789g/L

  • Now we use the density to calculate the litres of alcohol needed, keeping in mind that 16.29 g of alcohol are needed:

16.29g*\frac{1L}{789g}= 0.02065 L of alcohol are needed.

  • Finally we calculate the litres of beer needed, keeping in mind the concentration of alcohol in beer:

0.02065L_{alcohol}*\frac{100L_{beer}}{6L_{alcohol}} =0.3442 L of beer are needed.


Similar Questions

Affect the amount and rate the alcohol reaches the bloodstream ?

Asked by maham237 @ in Health viewed by 293 persons

Affect the amount and rate the alcohol reaches the bloodstream.

Asked by maham237 @ in Mathematics viewed by 315 persons

What affect the amount and rate the alcohol reaches the bloodstream. The size of the drink, your age, and body weight Drinking rate, body weight, and the size of the …

Affect the amount and rate the alcohol reaches the bloodstream

Asked by maham237 @ in Health viewed by 270 persons

2. ________________ affect the amount and rate the alcohol reaches the bloodstream.

Abcd is a square. what is the measure of angle bac? °

Asked by maham237 @ in Mathematics viewed by 274 persons

What is the measure of angle BAC? ABCD is a square 30 45 60 90

As a driver, if you refuse a test to determine the amount of alcohol in your body:

Asked by maham237 @ in Social Studies viewed by 281 persons

a. your driver license will be suspended b. you must be sentenced to at least three days in jail c. you must be fined at least $500 d. you may …

A measure of the amount of matter in an object

Asked by admin @ in Chemistry viewed by 312 persons

What is a measure of the amount of matter in an object? (2 points) Select one: a. density b. mass c. gravity d. weight

Measuring the amount of acetic acid in vinegar investigatory project

Asked by admin @ in Chemistry viewed by 288 persons

How to calculate the amount of acetic acid in vinegar investigatory project 2?

What instrument is used to measure the amount of precipitation

Asked by admin @ in Biology viewed by 227 persons

Q23 Which instrument is used to measure the amount of rainfall? *​

Amount of various immunoglobulin classes can be measured by

Asked by admin @ in Biology viewed by 238 persons

Amount of various immunoglobulin classes can be measured by A.double diffusion in one dimension B. single diffusion in two dimensions C. single diffusion in one dimension D. double diffusion in …

Blood alcohol concentration is a measurement of the level of

Asked by admin @ in Chemistry viewed by 269 persons

Blood alcohol concentration (BAC) is a measure of alcohol in your body, expressed as grams of alcohol per 100ml of blood. For a BAC of 0.05, every 100ml of your …

Which angle’s measure is equal to the sum of the meaures of ∠bac and ∠bca? ∠cba ∠cbe ∠dac ∠bcf

Asked by maham237 @ in Mathematics viewed by 385 persons

Which angle’s measure is equal to the sum of the meaures of ∠BAC and ∠BCA? ∠CBA ∠CBE ∠DAC ∠BCF

Overcoming fixed mindset: a step-by-step guide to cultivating a growth mindset

Asked by wiki @ in Health viewed by 1294 persons

Which of the following would best complete this list?

Asked by wiki @ in Social Studies viewed by 751 persons

What had the king decided to do before he saw the spider

Asked by vanshika149 @ in English viewed by 1153 persons

Describe the karez in your own words

Asked by rajesh064 @ in English viewed by 1320 persons

Most viewed questions in Chemistry

Discuss sn2 mechanism of methyl bromide using aqueous koh

Asked by admin @ in Chemistry viewed by 2187 persons

Comparing lactose percentage between whole milk and powdered milk

Asked by admin @ in Chemistry viewed by 1926 persons

Lewl letpa

Asked by maham237 @ in Chemistry viewed by 1563 persons

50 examples of unbalanced chemical equations with answers

Asked by admin @ in Chemistry viewed by 1394 persons

Chromium metal is immersed in an aqueous solution of cobalt(ii) chloride.

Asked by maham237 @ in Chemistry viewed by 1321 persons

Prepare a chart giving detailed information of carbon compounds

Asked by admin @ in Chemistry viewed by 1283 persons

Which 1 mole sample has the least entropy

Asked by maham237 @ in Chemistry viewed by 1271 persons

If you are given the assignment to cut raw poultry

Asked by maham237 @ in Chemistry viewed by 1250 persons

Effect of succinic acid on cst of phenol water system

Asked by admin @ in Chemistry viewed by 1247 persons

The reaction between aluminium powder and anhydrous barium nitrate

Asked by maham237 @ in Chemistry viewed by 1221 persons

Cnh4 lewis structure

Asked by maham237 @ in Chemistry viewed by 1143 persons

2 3 dihydroxypropanal

Asked by maham237 @ in Chemistry viewed by 1048 persons

Select true statements about the pentose phosphate pathway

Asked by maham237 @ in Chemistry viewed by 1034 persons

Crossword puzzle on carbon and its compounds class 10

Asked by admin @ in Chemistry viewed by 1008 persons

Ionic bond calculator

Asked by maham237 @ in Chemistry viewed by 984 persons