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nlexa [21]
3 years ago
10

Explain the relationships among balancing, chemical equations, and endothermic/exothermic

Chemistry
1 answer:
Ket [755]3 years ago
3 0
Endothermic - absorbs heat from the surroundings
exothermic - releases heat into the surroundings
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Find molar mass of a gas when the density is given as 1.25g / L
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1.25 g x 22.4 l / 1 mol = 28 g/mol
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2 years ago
What characteristic of an element’s atoms always determines the element’s identity?
dmitriy555 [2]

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Number of protons

Explanation:

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Which analogy can best be likened to the activation energy of a chemical reaction? a drain through which water flows a slide dow
Nina [5.8K]
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7 0
3 years ago
Read 2 more answers
A __ is a continuous range of a single feature such as wavelength
Gwar [14]
Hey there! 

The correct answer to your question is: Spectrum
 
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6 0
2 years ago
A container of gas is initially at 0.25 atm and 0 ˚C. What will the pressure be at 125 ˚C?
Pani-rosa [81]

Answer:

0.37atm

Explanation:

Given parameters:

Initial pressure  = 0.25atm

Initial temperature  = 0°C  = 273K

Final temperature  = 125°C  = 125 + 273  = 398K

Unknown:

Final pressure  = ?

Solution:

To solve this problem, we use a derivative of the combined gas law;

           \frac{P1}{T1}  = \frac{P2}{T2}

  P and T are pressure and temperature

  1 and 2 are initial and final values

        \frac{0.25}{273}   = \frac{P2}{398}  

         P2  = 0.37atm

3 0
2 years ago
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