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
natka813 [3]
2 years ago
10

How many moles of O atoms are present in a 254 g sample of carbon dioxide?

Chemistry
1 answer:
MaRussiya [10]2 years ago
3 0

Answer:

11.6mol

Explanation:

CO2 = 44g

2 mol of O2 = 44g

X mol of O2 = 254

Cross multiply

X= 11.6mol

You might be interested in
6. Why does the sun seem to change position in the sky?
Dafna11 [192]
A. Earth’s Rotation
4 0
3 years ago
Use the periodic table to select the element that best fits each of the following descriptions. which element below has properti
xenn [34]

Answer: Boron is the element which has properties of both metals and nonmetals.

Explanation:

Metals are defined as the elements which loose electrons to attain stable electronic configuration. They attain positive charge and form cation. Example: Zinc (Zn), Aluminium (Al) , copper (Cu)

Non-metals are defined as the elements which gain electrons to attain stable electronic configuration. They attain negative charge and form anion. Example: Chlorine (Cl) , Sulphur (S)

Metalloids are defined as the elements which show properties of both metals and non-metals. There are 7 metalloids in the periodic table. They are Boron (B) , Silicon (Si) , Germanium (Ge) , Arsenic (As) ,  Antimony (Sb), Tellurium (Te) and Polonium (Po).

Thus boron is the element which has properties of both metals and nonmetals.

7 0
3 years ago
Read 2 more answers
How much heat is required to convert 20.0 g of ice at 50.0⁰C to liquid water at 0.0⁰C? The specific heat of ice is 2.06 J/(g∙⁰C)
Alex777 [14]

Answer:

8740 joules are required to convert 20 grams of ice to liquid water.

Explanation:

The amount of heat required (Q), measured in joules, to convert ice at -50.0 ºC to liquid water at 0.0 ºC is the sum of sensible heat associated with ice and latent heat of fussion. That is:

Q = m\cdot [c\cdot (T_{f}-T_{o})+L_{f}] (1)

Where:

m - Mass, measured in grams.

c - Specific heat of ice, measured in joules per gram-degree Celsius.

T_{o}, T_{f} - Temperature, measured in degrees Celsius.

L_{f} - Latent heat of fussion, measured in joules per gram.

If we know that m = 20\,g, c = 2.06\,\frac{J}{g\cdot ^{\circ}C}, T_{f} = 0\,^{\circ}C, T_{o} = -50\,^{\circ}C and L_{f} = 334\,\frac{J}{g }, then the amount of heat is:

Q = (20\,g)\cdot \left\{\left(2.06\,\frac{J}{g\cdot ^{\circ}C} \right)\cdot [0\,^{\circ}C-(-50\,^{\circ}C)]+334\,\frac{J}{g} \right\}

Q = 8740\,J

8740 joules are required to convert 20 grams of ice to liquid water.

3 0
3 years ago
Ve. In what layer do weather balloons fly?<br><br> Earth layers
galben [10]

Answer:

stratosphere

Explanation:

6 0
2 years ago
What can be concluded about the atom from knowing that oxygen 18 has an atomic number of 8?
Vinvika [58]
<span>The atomic number of a neutral atom is equal to the number of protons and the number of electrons of the atom. The atomic weight meanwhile is equal to the sum of the number of protons and number of neutrons.Hence we can say that the number of protons is 8 and the number of neutrons is 10. </span>
7 0
3 years ago
Read 2 more answers
Other questions:
  • Which statement best reflects a change in weather
    6·2 answers
  • An element has atomic number 10 and an atomic mass of 20. How many neutrons are in the atom of this element?
    9·1 answer
  • Oil and water placed in a jar will separate. Even when
    7·2 answers
  • For an object that is speeding up at a constant rate, how would the acceleration vs. time graph look?
    14·2 answers
  • As fuel is burned in an airplane, it seems to disappear from the tank, suggesting that matter is destroyed during the reaction.
    15·1 answer
  • 3. Write DISSOCIATION or IONIZATION equations for the following chemicals:
    13·1 answer
  • (HELP FAST )What occurs when a pure liquid substance is cooled?
    6·2 answers
  • Please help! Question is on the bottom​
    5·1 answer
  • Plant and animal cells contain many of the same structures, and those structures carry out the same functions in both types of c
    12·1 answer
  • what mass of grams of hydrogen sulfide will be required to participate 15 g of copper sulphide from a copper (ii) traoxosulphate
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!