<span>Answer – We are given, 2H2+O2 ----> 2H2O , deltaH = -48.4 kJ Moles of H2 =1.8 moles From the above given balanced equation We know, 2 moles of H2 = -48.4 kJ So, 1.8 moles of H2 = ? kJ = 1.8 moles of H2 X -48.4 kJ / 2 moles of H2 =-43.6 kJ So, when 1.8 mol of H2...</span>
Answer:
<h2>100°C is the boiling point of water in degrees Celsius</h2>
<h3>
Answer:</h3>
1 Nitrogen atom and 3 Hydrogen atoms
<h3>
Explanation:</h3>
- A molecule is the smallest particle of an element or a compound that has the properties of the element or the compound.
- Molecules of elements are made up of similar atoms while those of compounds are made up of different atoms from different elements.
- Compounds are made up of atoms of different elements.
- For example, NH₃ is made up of one nitrogen atom and three ammonia atoms, water(H₂O) is made up of two hydrogen atoms and one oxygen atom.
The Organisms that formed them likely lived during the Paleozoic era.
