If 2.98 moles of hydrogen react completely, how many moles of oxygen will be required for the reaction? 2. If 0.99592 moles of water form from the reaction of hydrogen and oxygen, how many moles of oxygen were required?
3. If 6.2 moles of nitrogen react with hydrogen, how many moles of ammonia (NH3) will be created?
4. If 0.8905 moles of hydrogen react to make ammonia, how many moles of nitrogen are required for the reaction?
5. If 6.2 moles of carbon dioxide are formed from the combustion of propane (C
3H8), how many moles of oxygen are required for the reaction?

6. If 6.9 moles of water are formed in the combustion of propane, how many moles of carbon dioxide are also formed?

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.

alkaline metals are lithium, sodium, rubidium, potassium, cesium and francium.

alkali metals have electronegativity from 0.7 to 1, lowest in periodic table of elements, which means that alkali metals (i group in periodic table) has positive oxidation number in compounds.

electronegativity is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself.

alkaline metals (far left in main group) have lowest ionizations energy and easy remove valence electrons,

for example, potassium is the alkali metal and has a single valence electron in the outer electron shell.

electron configuration of potassium is: ₁₉k 1s²2s²2p⁶3s²3p⁶4s¹.

they can not exist alone in nature, because they are very reactive.

the electron configuration that you gave me has 16 electrons ergo it has 16 protons ergo it is the element sulfur.

what are the statements