3 years ago

How do you tell if a reaction is endothermic or exothermic using only the written formula

1 answer:

6 0

You know if it's endothermic or exothermic by doing the enthalpy reaction. If the change of temperature is negative then it is exothermic, while positive is endothermic. If you get -22K then its exothermic, but if you get +22 its endothermic.

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vazorg [7]

MA= output force/ input force
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3 years ago

What is the molar mass of 81.50 g of gas

garik1379 [7]

The molar mass of gas = 238.29 g/mol

<h3>Further explanation</h3>

Given

mass = 81.5 g

P=1.75 atm

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Required

molar mass

Solution

The gas equation can be written

$\large{\boxed{\bold{PV=nRT}}$

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So the equation becomes :

$\tt Molar~mass=\dfrac{mRT}{PV}$

Input the value :

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3 years ago

Read 2 more answers

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Gekata [30.6K]

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What is the hydrogen-ion concentration of the ph is 3.7

Komok [63]

Answer:

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Explanation:

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