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
Anna11 [10]
3 years ago
7

How far can a cough travel?

Chemistry
1 answer:
jolli1 [7]3 years ago
6 0

Traveling upwards of 200 mph or 320 km/h, and accelerating in a matter of seconds, germs from a cough or sneeze can travel a great distance very quickly.

You might be interested in
A 32.2 g iron rod, initially at 21.9 C, is submerged into an unknown mass of water at 63.5 C. in an insulated container. The fin
lorasvet [3.4K]

Answer : The mass of the water in two significant figures is, 3.0\times 10^1g

Explanation :

In this case the heat given by the hot body is equal to the heat taken by the cold body.

q_1=-q_2

m_1\times c_1\times (T_f-T_1)=-m_2\times c_2\times (T_f-T_2)

where,

c_1 = specific heat of iron metal = 0.45J/g^oC

c_2 = specific heat of water = 4.18J/g^oC

m_1 = mass of iron metal = 32.3 g

m_2 = mass of water = ?

T_f = final temperature of mixture = 59.2^oC

T_1 = initial temperature of iron metal = 21.9^oC

T_2 = initial temperature of water = 63.5^oC

Now put all the given values in the above formula, we get

32.3g\times 0.45J/g^oC\times (59.2-21.9)^oC=-m_2\times 4.18J/g^oC\times (59.2-63.5)^oC

m_2=30.16g\approx 3.0\times 10^1g

Therefore, the mass of the water in two significant figures is, 3.0\times 10^1g

3 0
3 years ago
The absorbance of a garbanzo bean solution that had been diluted by a factor of three was 0.528. what was the concentration of t
Serjik [45]
The Beer-Lambert law states that A = E*c*l where A is absorbance, E is the molar absorbance coeffecient, c is concentration and l is path length. Therefore the absorbance is directly proportional to concentration, and by increasing the concentration by a factor of 3, absorbance will increase by a factor of 3 giving   A = 1.584
6 0
3 years ago
What is the primary requirement for a molecule to be analyzed by Gas Chromatography?
BabaBlast [244]

Answer:

b) The molecule has a molecular weight under 200 g/mole

Explanation:

The molecule has a molecular weight under 200 g/mole is the primary requirement for a molecule to be analyzed by Gas Chromatography.

3 0
3 years ago
Read 2 more answers
The chemical which is changed into the product
seropon [69]
The chemical change can occur can be find if you mix the two solids in one direction
5 0
3 years ago
Read 2 more answers
1. A pure substance is a chemical substance that has the same composition throughout. There are two
marin [14]

Answer:

Option D. Iron and sulfur react to form iron sulfide

Explanation:

Reaction of iron with sulphur is a chemical property and not a physical property.

3 0
3 years ago
Other questions:
  • HELP I DON'T HAVE MUCH TIME PLZ HELP ME IF YOU ARE REALLY GOOD AT SCIENCE COME TO MY QUESTION PLEASEEEE Which fossil fuel create
    10·1 answer
  • If your unknow solid has an impurity that is insoluble in cyclohexane, will this impurity result in the molar mass of the unknow
    14·1 answer
  • 8. Ascorbic acid (Vitamin C) cannot be stored in the body, so it must be supplied in the diet. It is a C, H, O compound. If 7.75
    14·1 answer
  • Explain the concept of electron density
    5·1 answer
  • Explain how the atom is a part of the electrical current process.
    12·1 answer
  • Which statement correctly compares sound and light waves?
    11·1 answer
  • What does the formula 2n2 represent?
    7·1 answer
  • After oil is naturally refined underground, the only way that a viable deposit of hydrocarbons can form is if the oil encounters
    10·1 answer
  • How much heat is needed to raise the temperature of 6g of water by 17oC?
    5·2 answers
  • Perform the following operation
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!