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bekas [8.4K]
4 years ago
11

Que compuestos representan el enlace covalente

Chemistry
1 answer:
PolarNik [594]4 years ago
8 0
I really would like to answer it but I can’t read Spanish represent?
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What is atomic mass made of?
olasank [31]

Answer:

Together, the number of protons and the number of neutrons determine an element's mass number: mass number = protons + neutrons. If you want to calculate how many neutrons an atom has, you can simply subtract the number of protons, or atomic number, from the mass number.

Explanation:

4 0
3 years ago
A sample of CaCO3(s) is introduced into a sealed container of volume 0.638 L and heated to 1000 K until equilibrium is reached.
JulsSmile [24]

Answer:

the mass of CaO present at equilibrium is, 0.01652g

Explanation:

K_p = [CO_2] = 3.8×10⁻²

Now we have to calculate the moles of CO₂

Using ideal gas equation,

PV =nRT

P = pressure of gas = 3.8×10⁻²

T = temperature of gas = 1000 K

V = volume of gas = 0.638 L

n = number of moles of gas = ?

R = gas constant = 0.0821 L.atm/mole.k

\frac{3.8 * 10^2 * 0.638}{0.0821 * 1000} \\= 2.95 * 10^-^4

Now we have to calculate the mass of CaO

mass = 2.95 * 10 ⁻⁴ × 56

= 0.01652g

Therefore,

the mass of CaO present at equilibrium is, 0.01652g

7 0
3 years ago
Name at least two benefits of using models in science.
aliina [53]

Explanation:

1) it gives you a visual of what you will be doing

2) you can find more variables when looking at it compared to just thinking of it

3) gives you new insights on what is yet to come

4) allows you to answer some questions and begin testing

7 0
3 years ago
Read 2 more answers
Can atoms be created or destroyed during a chemical reaction?
ValentinkaMS [17]

Answer:

No.

Explanation:

During chemical reaction, atomes cannot be created or destroyed, they can only react together to form <em>E</em><em>l</em><em>e</em><em>m</em><em>e</em><em>n</em><em>t</em><em> </em>or <em>C</em><em>o</em><em>m</em><em>p</em><em>o</em><em>u</em><em>n</em><em>d</em><em> </em>at the <em>P</em><em>r</em><em>o</em><em>d</em><em>u</em><em>c</em><em>t</em><em> </em>side.

7 0
3 years ago
Which equilibrium reaction will experience a shift towards the products in equilibrium position when the concentration of ni2+ i
juin [17]

Answer is <span>
      Ni²</span>⁺(aq) + 6NH₃(aq) ⇌ [Ni(NH₃)₆]²⁺<span>

</span>

<span>When the concentration of Ni²⁺</span><span>(aq) increases, according to the Le Chatelier’s principle system tries to become equilibrium by reducing the increased factor. To do that, the concentration of Ni²⁺</span><span>(aq) should be reduced. Hence, the forward reacted should be promoted to reduce the Ni²⁺</span><span>(aq) concentration</span>.
8 0
3 years ago
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