Answer:
1)
2)Hg2 3 po4 2
Mercury(I) Phosphate (Hg2)3(PO4)2 Molecular Weight
3)2C6H14 + 19O2 → 12CO2 + 14H2O + heat
Explanation:
i dont know the 1st one i ggoles the 2nd one and it gave me this, hope it helps
Answer:
pH=3.38
Explanation:
We are given the concentrations of the weak acid and its conjugate base so we need to use the henderson hasslebalch equation
pH=pKa + log (concentration A-/concentration of HA)
A- : conjugate base NaC3H5O3
HA: weak acid HC3H5O3
so if we plug in what we are given
pH= 3.08 + log (1M/.5M)
pH= 3.38
Answer:
C) 0.121 M
Explanation:
HCl + H₂O = H₃O⁺ + OH⁻
.121M .121M
HCl is a strong acid . It will dissociate almost 100 % so the concentration of acid and hydronium ion formed will be equal . It is to be noted that hydronium ion is formed due to association of H⁺ and H₂O . H⁺ is formed due to ionisation of HCl .
So concentrtion of hydronium ion ( H₃O⁺ ) will be .121 M.
Tides are the rise and fall of the oceans. They are caused by the gravity, or pull, of the Moon and Sun. The Moon's gravity is the main force in causing tides. It makes the oceans bulge out toward it. Another bulge occurs on the opposite side, because Earth is being pulled toward the Moon and away from the water. The water on the side farthest away from the Moon is least affected by its gravity.
Answer:
Option B. A
Explanation:
From the question given above, the following data were obtained:
C(s) + 2H₂ (g) —> CH₄ (g). ΔH = –74.9 kJ
From the reaction above, we can see that the enthalpy change (ΔH) is negative (i.e –74.9 KJ) which implies that the heat content of the reactants is greater than the heat content of the products. Thus, the reaction is exothermic reaction.
For an exothermic reaction, the energy profile diagram is drawn in such a way that the heat content of reactants is higher than the heat content of products because the enthalpy change
(ΔH) is always negative.
Thus, diagram A (i.e option B) gives the correct answer to the question.
