1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
marusya05 [52]
3 years ago
9

Calculate the amount of hcn that gives the lethal dose in a small laboratory room measuring 12.0 ft×15.0 ft×8.50ft.

Mathematics
1 answer:
Anarel [89]3 years ago
7 0
Dimensions of the room in cm = 2.54 x 12 by 15 x 2.54 by 2.54 x 8.5 = 30.48 by 38.1 by 21.59

Volume of the room in cubic cm = 30.48 x 38.1 x 21.59 cubic cm = 25,072.21 cubic cm

Given that the density of air at room temperature is 0.00118g/cm^3, thus the mass of air in the room = 25,072.21 x 0.00118 = 29.59 g = 0.0296 kg

Given that the lethal dose of HCN is approximately 300 mg HCN per kilogram of air when inhaled, thus the <span>amount of HCN that gives the lethal dose in the small laboratory room is given by 300 x 0.0296 = 8.88 mg.</span>
You might be interested in
Help me with this one pls
arlik [135]
The answer would be d
7 0
3 years ago
In a simple regression analysis (where y is a dependent and x an independent variable), if the slope is positive, then it must b
Scorpion4ik [409]

Answer:

c. there is a positive correlation in-between x and y

Step-by-step explanation:

A regression line is a line that suggests that all the points in a scatter diagram lie on or near one particular line. In a simple regression analysis in which y is the dependent variable and x is the independent variable. If the slope is positive, the bivariate data is also said to have a positive correlation. The positive correlation in-between two variables x and y implies that in general, an increase in x goes hand in hand with an increase in y.

3 0
3 years ago
This is on claskick 7th grade 7(m +2n)<br> 7( )+ 7 ( )
mixer [17]
Answer: 7(m+2m) is equal to 7(m) + 7(2m)
5 0
3 years ago
Greatest common factor for 40,10
horrorfan [7]
The greatest common factor of 40&10 is 10
8 0
4 years ago
Read 2 more answers
What is 12/24 - 10/23
Elodia [21]
The LCD of 24 and 23 is 552, so 276/552 - 240/552 = 36. After simplifying 36/552, you get 3/46 and that is your answer.
4 0
3 years ago
Other questions:
  • Frank is building a table. He needs 4 pieces of wood for the table legs. Each piece of wood needs to be 7/8 of a foot long. What
    5·1 answer
  • What is the approximate value of y − x?
    14·1 answer
  • If two events are independent, then:
    5·1 answer
  • When Richards solved the equation 2(x - 5) = 56 + 6(x - 5), he used the distributive property in step one to write an equivalent
    7·1 answer
  • Please help ASAP EASY MATH!!!!! Only 18-20
    6·2 answers
  • If r = 3.2, what is the area of the shaded region? Round your answer to the nearest hundredth. Use your calculator's value of π.
    13·1 answer
  • Ansel works on commission as a furniture salesman. He sold a couch that cost $800 and received a $120 commission. What percent o
    10·2 answers
  • Bradley is purchasing a new car for 37000. If the car loses 20%of its value every year, how much will the car be worth in 7 year
    5·1 answer
  • What is 61 x 15.98???
    7·2 answers
  • The Edward James Toy Company uses a Kanban system to make plastic wheels that are a component of several toys. The waiting time
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!