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
Slav-nsk [51]
3 years ago
9

An NHTSA study found that the average inpatient costs for crash victims who were not using safety belts were __________ percent

higher than for those who were belted.
A. 15
B. 35
C. 55
D. 75
Chemistry
1 answer:
jeka943 years ago
5 0
The 1996 NHTSA study, Crash Outcome Data Evaluation System (CODES), related traffic flow and medicinal accounts in seven states to measure entire costs of wound from motor vehicle crashes. The research originate that the mean inpatient costs for crash fatalities who were not using safety belts were 55 percent <span>higher than for those who were belted.</span>
You might be interested in
A student chromatographs a mixture and after developing the spots with a suitable reagent he observes the following
Anika [276]

Rf value is the ratio of the distance traveled by the solute to that of the solvent front on the paper used in chromatographic separation.

From the image it is clear the distance traveled by solvent front = 7.3 cm

Distance traveled by the component -1 of the mixture = 1.4 cm

Distance traveled by the component -2 of the mixture = 3.0 cm

Distance traveled by the component -3 of the mixture = 4.5 cm

Distance traveled by the component -4 of the mixture = 6.5 cm

Rf value of component-1 = \frac{1.4 cm}{7.3 cm} =0.192

Rf value of component-2 = \frac{3.0 cm}{7.3 cm} =0.410

Rf value of component-3 = \frac{4.5 cm}{7.3 cm} =0.616

Rf value of component-4 = \frac{6.5 cm}{7.3 cm} =0.890

b) Samples can be separated from a mixture using chromatography as the relative affinities for the compounds towards the paper (stationary phase) and the solvent(mobile phase) are different. Each component spends different amounts of time on the stationary phase depending on it chemical nature. So, the components in a mixture can be separated based on their polarities and relative degrees of adsorption on the stationary phase.








6 0
3 years ago
Please Help! Let P and V represent the pressure and volume of Xe(g). If a piston is used to reduce the volume of the gas to V/2
Elza [17]

1) 2P

2) Average speed does not change

Explanation:

1)

To solve the first part of the problem, we can use Boyle's Law, which states that:

"For a fixed mass of an ideal gas kept at constant temperature, the pressure of the gas is inversely proportional to its volume"

Mathematically:

pV=const.

where

p is the pressure of the gas

V is its volume

For the Xe gas in this problem we can write

p_1 V_1 = p_2 V_2

where:

p_1 = P is the initial pressure

V_1=V is the initial volume

V_2=\frac{V}{2} is the final volume

Solving for p2, we find the final pressure:

p_2=\frac{P V_1}{V_2}=\frac{pV}{V/2}=2P

So, the pressure has doubled.

2)

The average speed of the atoms/molecules in the gas is given by the formula

v_{rms}=\sqrt{\frac{3RT}{M}}

where

R is the gas constant

T is the absolute temperature (in Kelvin) of the gas

M is the molar mass of the gas

v_{rms} is known as rms speed of the particles in the gas

From the formula, we see that the speed of the atoms in the gas depends only on the temperature of the gas.

In the Xe(g) gas in this problem, the temperature is kept constant; therefore, since nothing changes in the formula, this means that the average speed also does not change.

8 0
3 years ago
How water deposits soil sediment and rock
n200080 [17]
<span>A river can only carry a load if it has adequate energy. When the energy drops below a certain level, therefore, the load is dropped. In the Thalweg (the line of fastest flow), more load is carried, and this is also where the erosion occurs, adding more load. On the inside of a meander, for example, since the Thalweg is on the outside, the velocity on the inside is very low, and so deposition occurs. On the very inside, water merely trickles past. This is incapable of transporting load, so it deposits it until it is able to carry all of it.</span>
8 0
3 years ago
Investigator Nixon is asked to pick up a firearm at a crime scene. What is the correct way for Investigator Nixon to pick up the
artcher [175]

Answer:

i dont know

Explanation:

7 0
2 years ago
Action that occurs as two or more objects have an
Naya [18.7K]
The action is interaction
4 0
3 years ago
Other questions:
  • If Chris throws the baseball 60 meters in 4 seconds what is the average speed of the football
    14·1 answer
  • A type of covalent bond in which electrons are shared unevenly
    7·1 answer
  • A chemical reaction was used to separate a sample into its components. What conclusion about the sample can be formed based on t
    15·2 answers
  • Explain how burning a candle is an example of both physical and chemical changes.
    11·1 answer
  • A solution of calcium chlorate was poured into a sodium fluoride solution. Would you expect a precipitate to form if 255.0 mL of
    15·1 answer
  • The electron configuration of an element is [Ar] 4s23d104p2. Identify this element.
    9·1 answer
  • Hard water stains in sinks and showers can be caused by a buildup of solid calcium carbonate. These stains can be removed by bat
    8·2 answers
  • Farmers use conservation practices such as crop rotation to insure that their crops are sustainable. Crop rotation is the proces
    13·1 answer
  • Definition of atomic number ​
    14·2 answers
  • HELP ME OUT PLS!!!!!
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!