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
Art [367]
3 years ago
9

A weight of 0.27 kilogram is 1. 0.00027 mg 2. 270 mg 3. 27 mg 4. 2.7 × 105 mg

Chemistry
1 answer:
julia-pushkina [17]3 years ago
8 0
The answer is:  4)  " 2.7 * 10⁵  mg "   .
________________________________________________________
Explanation:
________________________________________________________
Since all answer choices given are in "mg" ("milligrams");  we need to convert our given value, "0.27 kg" ("kilograms") to "mg" ("milligrams").
________________________________________________________
Note the following "exact value" conversions:
________________________________________________________
 1000 mg = 1 g ;
   1000 g = 1 kg. 

(0.27 kg) (1000 g / 1 kg) (1000 mg/1 g) = __?__ mg ;
_____________________________________________________
 The units of "kg", and "g" cancel to "1" and we are left with:
________________________________________________
0.27 * 1000 * 1000  mg  = 270,000 mg =  2.7 * 10<span>⁵ </span> mg ; which is:
_______________________________________________________
                                                               → Answer choice: # 4  .
_______________________________________________________
You might be interested in
7. In which environment would liverworts and hornworts grow?
Lelechka [254]
Didjtntbbfjchfjfnt thriving tkfkdkalemrnnfnfjcjfjfjrj
5 0
3 years ago
What is the term for photosynthesis<br>​
Alla [95]
The process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water.
5 0
3 years ago
How many moles of chloride ions are there in 2.5 L of 5 M magnesium chloride?
castortr0y [4]

Answer:

n_{Cl^-}=25molCl^-

Explanation:

Hello,

In this case, since the given 5-M concentration of magnesium chloride is expressed as:

5\frac{molMgCl_2}{L}

We can notice that one mole of salt contains two moles of chloride ions as the subscript of chlorine is two, in such a way, with the volume of solution we obtain the moles of chloride ions as shown below:

n_{Cl^-}=5\frac{molMgCl_2}{L}*\frac{2molCl^-}{1molMgCl_2} *2.5L\\\\n_{Cl^-}=25molCl^-

Best regards.

4 0
3 years ago
When heated, calcium carbonate goes through a chemical reaction, and produces calcium oxide (quick lime) powder and carbon
Contact [7]

Answer:

Carbon dioxide is produced, and as a gas, it was not captured to measure its mass.

Explanation:

4 0
4 years ago
Read 2 more answers
These goats are eating grass on a sunny day. What is happening to the carbon in the air around the living things on the mountain
polet [3.4K]

Answer:

both

Explanation:

Carbon in the air around the living thing is moving in and out of its lungs. The movement is occurring at the same time. This is one of the most important gaseous exchange important to life.

  • The goats takes in oxygen gas from the surrounding and releases carbon dioxide in the process.
  • But, air is actually drawn in by the goat which is a mixture of several gases.
  • Air contains carbon dioxide which is a rich source of carbon
  • With the carbon dioxide from respiratory processes, the goat ejects and breathes out this waste carbon matter.
  • Therefore, the gaseous exchange in a goat involves the movement of carbon in and out of the air.
8 0
4 years ago
Other questions:
  • What is the formula for trinitrogen nonaoxide
    8·2 answers
  • A measure of the kinetic energy of particle motion within a substance is _____.
    15·2 answers
  • A slice of Swiss cheese contains 41 mg of sodium.
    7·1 answer
  • Which of the following is not organic?
    9·1 answer
  • Which element has fewer than four dots in its electron dot diagrams?
    7·2 answers
  • Explain why the lattice energy and the energy of crystallization of a substance differ in sign but are equal in magnitude.
    6·1 answer
  • Red blood cells are constantly being produced in your body. Another body system cooperates with the cardiovascular system in the
    12·1 answer
  • Atoms of noble gases are generally inert because..
    8·1 answer
  • Tell me the main parts of the Earth Layers.
    5·1 answer
  • Write the number below in scientific notation rounded off to 3 significant figures.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!