Answer:
25.9 g
Explanation:
Given that,
No of moles of calcium phosphate,
We need to find how many grams of calcium phosphate has this much of no of moles.
Mass divided by molar mass is equal to the no of moles on a molecule.
The molar mass of calcium phosphate is 310.18 g/mol
Using the concept of no of moles as follows :
Out of given options, option (a) i.e. 25.9 g is the correct answer.
The question is whether green bugs or bright red bugs get eaten more often
Answer:
melting from ice cube to water
Explanation:
this is because the object gains heat and melting occurs in the object
Answer:
At temperatures greater than 756 °C this reaction is spontaneous under standard conditions.
Explanation:
Let's consider the following reaction.
C(s) + H₂O(g) ⇄ CO(g) + H₂(g)
The reaction is spontaneous when the standard Gibbs free energy ΔG° < 0. ΔG° is related to the standard enthalpy of the reaction (ΔH°) and the standard entropy of the reaction (ΔS°) through the following expression.
ΔG° = ΔH° - T.ΔS°
If ΔG° < 0
ΔH° - T.ΔS° < 0
ΔH° < T.ΔS°
T > ΔH°/ΔS° = (131.3 × 10³ J/mol)/(127.6 J/K.mol) = 1029 K
The temperature in Celsius is:
°C = K - 273.15 = 1029 - 273.15 = 756 °C