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
alexira [117]
3 years ago
14

Half-life is _____________

Chemistry
2 answers:
Licemer1 [7]3 years ago
6 0
My answer would be b. hope this helps.
aniked [119]3 years ago
4 0
C is your answer.......
You might be interested in
Dr. Moore has discovered a new vaccine composed of carbon, hydrogen, and oxygen. When the product was purified and sent off for
pantera1 [17]

Answer:

C4H3O

Explanation:

Data obtained from the question include:

Carbon (C) = 68.85%

Hydrogen (H) = 4.95%

Since the vaccine contains carbon, hydrogen and oxygen, the remaining percentage will be for oxygen. The percentage of oxygen will be:

Oxygen (O) = 100 - (68.85 + 4.95)

= 26.2%

The empirical formula for the vaccine can be obtained as follow:

Carbon (C) = 68.85%

Hydrogen (H) = 4.95%

Oxygen (O) = 26.2%

Divide the above by their individual molar mass as shown below:

C = 68.85/12 = 5.7375

H = 4.95/1 = 4.95

O = 26.2/16 = 1.6375

Next, divide by the smallest number as shown below:

C = 5.7375/1.6375 = 4

H = 4.95/1.6375 = 3

O = 1.6375/1.6375 = 1

Therefore, the empirical formula for the vaccine is C4H3O

3 0
3 years ago
Read 2 more answers
According to the kinetic theory, what is the kinetic energy of a gas molecule proportional to?
masya89 [10]
C. temperature of the gas
6 0
3 years ago
Element (20X) in the periodic table exist in:
nikdorinn [45]

It occurs in oxygen I think

3 0
3 years ago
Determine the latitude and longitude of the location A
malfutka [58]

Answer:

Latitude: 30\° N

Longitude: 45\° W

Explanation:

Lets begin by explaining the meaning of latitude and longitude as geogrephical coordinates:

Latitude is the angular distance between the equatorial line, and a specific point on the Earth. It is measured in degrees and is represented according to the hemisphere in which the point is located, which can be north or south latitude.  

In this sense latitude 0\° refers to the equatorial line that divides the Earth in two hemispheres (North and South).

Longitude represents the specific east–west position of a point on the Earth's surface, being longitude 0\° the prime meridian or Greenwich meridian.

So, according to the figure, where the model of the Earth is divided by latitude lines separated by 10\° and the longitude lines separated by 15\°; we only have to count the lines from the equator to the line where the point A is, and count the lines fromo the Prime meridian to the line where point A is located.

Hence, point A location is:

Latitude: 30\° N

Longitude: 45\° W

5 0
4 years ago
When c2h4 molecules polymerize, the name of the polymer formed is
Gnoma [55]
<span>When c2h4 molecules polymerize, the name of the polymer formed is (b) Polyethylene. This is because the compound C2H4 is ethylene (common name) or ethene (IUPAC name) and polymerizing it would produce polyethylene. The other names are not applicable for C2H4.

</span>
7 0
3 years ago
Other questions:
  • A car travels at 15 kilometers west in 10 minutes after reaching the destination the car travels back to the starting point agai
    9·1 answer
  • What is the pH of a solution with a concentration of 3.6 × 10-5 molar H3O+? Show, or explain, the work used to solve this proble
    14·2 answers
  • A graduated cylinder contains 15.75 mL of water. A metal that weighs 53.405 g is added.
    10·1 answer
  • How and why theories change and how this contributes to continues and ongoing nature of science
    8·1 answer
  • The central atom in the chlorite anion, ClO2- is surrounded by: Question 5 options: one bonding and three unshared pairs of elec
    9·1 answer
  • What is the chemical symbol for element 2
    14·1 answer
  • Which of the following is not a reason to use an alloy instead of a pure metal?
    14·2 answers
  • What is the mass of glyphosate
    11·1 answer
  • Classify each as a physical or chemical change.
    7·1 answer
  • Do earthquakes occur at convergent plate boundaries? <br> Yes or no?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!