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natulia [17]
3 years ago
12

Convert 12 kcal to joules

Chemistry
2 answers:
miss Akunina [59]3 years ago
8 0

Answer:

50241.6

Explanation

sladkih [1.3K]3 years ago
5 0

Answer:50208

Explanation:

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What is the partial pressure (in atm) of CO₂ at 468.2 K in a 25.0 L fuel combustion vessel if it contains 60.0 grams CO₂, 82.1 g
NeTakaya

Answer:

2.09 atm

Explanation:

Step 1: Given and required data

  • Mass of CO₂ (m): 60.0 g
  • Volume of the vessel (V): 25.0 L
  • Temperature (T): 468.2 K

We won't need the data of water and uncombusted fuel, since the partial pressures are independent of each other.

Step 2: Calculate the number of moles (n) corresponding to 60.0 g of CO₂

The molar mass of CO₂ is 44.01 g/mol.

60.0 g × 1 mol/44.01 g = 1.36 mol

Step 3: Calculate the partial pressure of CO₂

We will use the ideal gas equation.

P × V = n × R × T

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3 years ago
Conversion factors are useful in solving problems in which a given measurement must be expressed in
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Conversion factors are useful in solving problems in which a given measurement must be expressed in some other units of measure.


Conversion factors
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A conversion factor is a number that is used to multiply or divide one set of units into another. If a conversion is required, it must be done using the correct conversion factor to get an identical value. For instance, 12 inches equals one foot when converting between inches and feet.

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Cholorine is more reactive than nitrogen? why<br>​
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Because of the presence of lone pairs in nitrogen it further adds to its reactivity. Hence nitrogen is more electronegative than chlorine. ... Chlorine is less reactive than nitrogen in other words nitrogen is more reactive than chlorine

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Answer:

Explanation:

Many elements have similar properties. This can be seen in how periodic table is arranged.  The vertical columns on the periodic table are called groups or families because of their similar chemical behavior.  All the members of a family of elements have the same number of valence electrons and similar chemical properties.  

For eg: Lithium, Sodium, and Potassium fall under group one in periodic table. These elements exhibit similar properties such as being extremely reactive.

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