<em>Answer:</em>
<em>Answer:Your skeletal </em><em>system</em><em> </em><em>relies </em><em>on </em><em>the </em><em>nutrients </em><em>it </em><em>gains </em><em>from </em><em>your </em><em>digestive</em><em> </em><em>system</em><em> </em><em>to </em><em>bulid </em><em>strong </em><em>healthy</em><em> </em><em>bones </em><em>.</em><em>A </em><em>body</em><em> </em><em>system</em><em> </em><em>is </em><em>a </em><em>group</em><em> </em><em>of </em><em>parts </em><em>that </em><em>work </em><em>together</em><em> </em><em>to </em><em>serve </em><em>a </em><em>common </em><em>purpose </em><em>.</em>
<em><u>maybe </u></em><em><u>this</u></em><em><u> </u></em><em><u>might</u></em><em><u> </u></em><em><u>be </u></em><em><u>ur </u></em><em><u>answer</u></em>
Answer is: -601,2 kJ/mol
Chemical reaction: Mg(OH)₂ → MgO + H₂O.
ΔHrxn = 37,5 kJ/mol.
ΔHf(Mg(OH)₂) = <span>−924,5 kJ/mol.
</span>ΔHf(H₂O) = <span>−285,8 kJ/mol.
</span>ΔHrxn -enthalpy of reaction.
ΔHf - enthalpy of formation.
<span>ΔHrxn=∑productsΔHf−∑reactantsΔHf.
</span>ΔHf(MgO) = -924,5 kJ/mol - (-285,8 kJ/mol) + 37,5 kj/mol.
ΔHf(MgO) = -601,2 kJ/mol.
Answer: Ionic bonds form only between metals and nonmetals. That's because metals “want” to give up electrons, and nonmetals “want” to gain electrons. It takes energy to remove valence electrons from an atom and form a positive ion. Energy is released when an atom gains valence electrons and forms a negative ion
Answer:
Explanation:
= Mass of metal = 19 g
= Specific heat of the metal
= Temperature difference of the metal =
V = Volume of water = 150 mL =
= Density of water =
= Specific heat of the water = 4.186 J/g°C
= Temperature difference of the water =
Mass of water
Heat lost will be equal to the heat gained so we get
The specific heat of the metal is .
It’s the second answer. “it gets used for metabolic process & released as heat” i think.