first one, nerve cells are used to send messages from different parts of the body to the brain.
Answer: if you examine the rock u might see that it has been in lava before or is dark from burns
Explanation: i dont know if im right but pls mark brainliest
Answer:
ΔG = -24.7kJ/mol
Explanation:
ΔG° of
Pb2+(aq) + 2Br-(aq) ⇄ PbBr2(s)
is:
ΔG° PbBr2 - (2*ΔG°Br- + ΔG°Pb2+)
-261.9kJ/mol - (2*-104.0kJ/mol + -24.4kJ/mol) =
-29.5kJ/mol
ΔG of the reaction is:
ΔG = ΔG° + RT lnQ
<em>Where R is gas constant (8.314x10⁻³kJ/molK)</em>
<em>T is absolute temperature (20°C + 273.15 = 293.15K)</em>
<em>Q is reaction quotient = 1 / [Pb²⁺][Br⁻]²</em>
<em />
Replacing:
ΔG = -29.5kJ/mol + 8.314x10⁻³kJ/molK*293.15K ln(1 / [Pb²⁺][Br⁻]²)
ΔG = -29.5kJ/mol + 8.314x10⁻³kJ/molK*293.15K ln(1 / [0.247M][0.758M]²)
<h3>ΔG = -24.7kJ/mol</h3>
<em />
Answer:
the more time you leave it to boil the water will turn to gas but if you leave it to heat for a short period of time it would probably stay the same
Explanation: