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madam [21]
2 years ago
10

This is my cookie >:( you cannot have it

Chemistry
1 answer:
Fofino [41]2 years ago
6 0
Hmm, welll I think it’s heterogeneous
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What is the molarity when water is added to 4 moles of sodium chloride to make 0.5 liter of solution?
loris [4]
       If    0.5 L of solution contains 4 mol
then let     1 L of solution contain  x  mol
      
       ⇒    (0.5 L) x  = (4 mol) (1 L)

                         x  = (4 mol · L)  ÷  (0.5 L)

                         x  = 8 mol

Thus the molarity of the Sodium Chloride solution is 8 mol / L   OR  8 mol/dm³. 
7 0
3 years ago
According to the aufbau principle,_____.
Softa [21]

Answer:

Hi there!

The correct answer to this question is: electrons enter orbitals of lowest energy first.

5 0
3 years ago
Read 2 more answers
Christopher conducts an experiment in which he tests how much sugar dissolves at different temperatures of water. One step requi
a_sh-v [17]

Answer:

305.65 K

Explanation:

Celsius to Kelvin => + 273.15

32.5 + 273.15

= 305.65 K

7 0
2 years ago
Cuando el oxígeno reacciona con el calcio produce un sólido blanco muy utilizado en la preparación de cementos. ¿Cuál de las sig
8_murik_8 [283]

Answer:

2Ca + O₂ → 2CaO

Explanation:

Cuando el Calcio (Ca) reacciona con oxígeno (O₂) se produce cal (CaO). La cal es un sólido inodoro de color blanco a grisáceo. La cal es un óxido que se encuentra presente en el cemento y su cuantificación permite determinar la calidad y el tipo de cemento a utilizar.

La reacción que describe el proceso anterior es:

Ca + O₂ → CaO

Para balancear los oxígenos, se deben poner 2 CaO como producto:

Ca + O₂ → 2CaO

Para balancear los calcios, se pone como coeficiente del Ca un 2:

<h3>2Ca + O₂ → 2CaO</h3><h3 />

Esta última es la reacción que describe el proceso anterior

6 0
3 years ago
Autopsies are only performed for a homicide
Ratling [72]
The answer to this question would be: false

Autopsies are performed to the body that didn't die from a natural cause or known disease. This will include homicide or suicide. Some case that suspected to be suicide would be a homicide that was covered by the criminal. In this case, the body is examined for any unnatural or suspicious sign that might be caused by the killer. Autopsy also needed in a malpractice case.
7 0
3 years ago
Read 2 more answers
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