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
Airida [17]
3 years ago
5

Cuál es la definición de un átomo?

Chemistry
1 answer:
SVETLANKA909090 [29]3 years ago
4 0

Answer:El átomo es una unidad básica de materia que consiste en un núcleo central denso rodeado por una nube de electrones cargados negativamente.

Explanation:

You might be interested in
How many neutrons are in one atom of cs- 134?
Aleonysh [2.5K]
<span>Cesium-134 is an isotope. An isotope is two or more elements that have the same number of protons, but different number of neutrons. A Neutron is a subatomic particle that has about to same mass as a proton, but its not electrically charged. One atom of CS-134 has 78 neutrons.</span>
4 0
3 years ago
Read 2 more answers
Dolomite is a mixed carbonate of calcium and magnesium that decomposes to CO2 and the metal oxides MgO and CaO upon heating. Whe
kirill [66]

Answer:

47%

Explanation:

MgCO₃ (s) → MgO (s) + CO₂ (g)

CaCO₃ (s) → CaO (s) + CO₂ (g)

_______________________

MgCO₃ (s) + CaCO₃ (s) → MgO (s) + CaO (s) + 2CO₂ (g)

MgO: 40.3044 g/mol

MgCO₃: 84.3139 g/mol

CaO:56.0774 g/mol

CaCO₃: 100.0869 g/mol

CO₂: 44.01 g/mol

15.42 g is the total mass of dolomite.

7.85 g is the sum of MgO and CaO produced.

This means that 7.57 g of CO₂ were produced.

44.01 g CO₂_____ 1 mol

7.57 g CO₂ _____  x

x = 0.172 mol CO₂

Considering the global reaction, we had 0.172/2 = 0.086 mol of MgCO₃ in the original sample.

1 mol MgCO₃ _______ 84.3139 g

0.086 mol MgCO₃ ___ y

y = 7.25 g

15.42 g dolomite ______ 100%

7.25 g MgCO₃ ________ z

z = 47%

7 0
3 years ago
Which of these must be an organic compound? sodium chloride water carbon dioxide hydrogen peroxid?
vova2212 [387]
Hydrogen. The three most common organic compounds are hydrogen, oxygen, and nitrogen.
3 0
3 years ago
What is the equilibrium constant for I2+Cl2=2ICl if I2=0.50m,Cl2=o.60m and ICl=5.0
Murljashka [212]

Answer:

0.5

Explanation:

because equilibrium constant is products over reactants

substituting values will give you 0.5

8 0
2 years ago
Why can ionic compounds<br> Conduct electricity ?
katen-ka-za [31]

Explanation:

Ionic compounds conduct electricity when molten (liquid) or in aqueous solution (dissolved in water), because their ions are free to move from place to place. Ionic compounds cannot conduct electricity when solid, as their ions are held in fixed positions and cannot move.

4 0
2 years ago
Other questions:
  • If the gas in the piston above has a volume of 20.0 L at a temperature of 25 C what is the volume of that gas when it is heated
    11·2 answers
  • If a sample of a substance contains 9.03 x 1023 representative particles, how many moles does this represent?
    7·1 answer
  • One consequence of the third law of thermodynamics is that A. heat engines have efficiencies less than 100 percent. B. in some e
    5·2 answers
  • Pf3i2 is a nonpolar molecule. based on this information, determine the f−p−f bond angle, the i−p−i bond angle, and the f−p−i bon
    6·2 answers
  • A student mixes chemicals A and B together and records the amount of time it takes for a color change to occur. The student repe
    8·1 answer
  • What is the combined gas law formula ?
    10·2 answers
  • How many sulfur atoms are generated when 9.42 moles of H2S react according to the following equation: 2H2S+SO2→3S+2H2O
    8·2 answers
  • 5. Why do water droplets form on the outside of a glass of cold soda?
    13·2 answers
  • Part 1: What is the final volume in milliliters when 0.730 L of a 44.8 % (m/v) solution is diluted to 23.3 % (m/v)?
    12·1 answer
  • What is the uncertainty of 300.0ft
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!