Answer:
4.44 g Ne
General Formulas and Concepts:
<u>Chemistry - Atomic Structure</u>
- Reading a Periodic Table
- Using Dimensional Analysis
Explanation:
<u>Step 1: Define</u>
0.220 mol Ne
<u>Step 2: Identify Conversions</u>
Molar Mass of Ne - 20.18 g/mol
<u>Step 3: Convert</u>
<u /> = 4.4396 g Ne
<u>Step 4: Check</u>
<em>We are given 3 sig figs. Follow sig fig rules and round.</em>
4.4396 g Ne ≈ 4.44 g Ne
The change in enthalpy for the reaction of carbon dioxide is -393.5 kJ/mol. Thus, option A is correct.
The change in enthalpy of the reaction is given by the energy of the product and the energy of reactant difference.
The chemical equation for the reaction is:
<h3>Computation for the enthalpy change</h3>
The standard enthalpy change for carbon dioxide is -393.5 kJ/mol
The standard enthalpy change for oxygen is 0 kJ/mol
The change in enthalpy of reaction is given as:
The change in enthalpy for the reaction of carbon dioxide is -393.5 kJ/mol. Thus, option A is correct.
Learn more about change in enthalpy, here:
brainly.com/question/1301642
D.the concentration of salt in the water her a the coast
an atom will gain or lose electrons to obtain 8 electrons in it's outer shell. In other words, elements want to reach an electron configuration of the nearest noble gas.
Its considered exothermic because it helps then stay cool or and hot