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Natalija [7]
3 years ago
11

Nguyên tố học học nhỏ nhất

Chemistry
1 answer:
igor_vitrenko [27]3 years ago
8 0

Answer:

Positive interdependence.

Individual and group accountability.

Interpersonal and small group skills.

Face-to-face promotive interaction.

Group processing.

hope this help you

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The elements most likely to form more than type of ion are the....
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1) How many moles of gas occupy 58 L at a pressure of 2.2 atmospheres and a temperature
Sergio039 [100]

Here, we need to solve this problem using Ideal gas law ( PV=nRT).

Where –

  • P = Pressure in atm
  • V = Volume in L
  • n = moles
  • R = Ideal gas law constant
  • T = Temperature in K

<u>Now, according to the question </u>–

  • V = 58 L
  • P = 2.2 atm
  • T = 313 K
  • R = 0.0821 atm L/ mol K

<u>Calculation</u> –

\qquad \pink{\twoheadrightarrow\bf PV = nRT}

\qquad \twoheadrightarrow\sf n = \dfrac{PV}{RT}

\qquad \twoheadrightarrow\sf  n = \dfrac{ 2.2 \: \:\times 58 \: } {0.0821  \times 313}

\qquad \twoheadrightarrow\sf  n = \dfrac{ 2.2 \times 58}{0.0821 \times 313}

\qquad \twoheadrightarrow\sf  n =\dfrac{127.6}{25.7}

\qquad \pink{\twoheadrightarrow\bf  n = 4.9656 \: moles }

_______________________________________

8 0
3 years ago
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What is the symbol for the isotope of 58 co that possesses 33 neutrons?
Leona [35]
Element with an atomic number of 58 is actually Cerium, so the symbol should be Ce, not Co because that is Cobalt which has an atomic number of 27. With that being said, the notation for isotopes is the symbol of the element with a superscript and a subscript that are aligned. The superscript represents the mass number.

Mass number = protons + neutrons = 58 + 33 = 91

The subscript is the atomic number which is 58. The notation is written in the picture attached.

6 0
3 years ago
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Name the complex ion [fe(cn)6]3−. the oxidation number of iron is 3.
Fiesta28 [93]

Hexacyanoferrate(iii)

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3 years ago
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