Given question is incomplete. The complete question is as follows.
Pentaborane (
) is a colorless highly reactive liquid that will burst into flames when exposed to oxygen.the reaction is:
Calculate the kilojoules of heat released per gram of the compound reacted with oxygen.the standard enthalpy of formation 
, 
, and 
are 73.2, -1271.94, and -285.83 kJ/mol, respectively.
Explanation:
As the given reaction is as follows.
Therefore, formula to calculate the heat energy released is as follows.
Hence, putting the given values into the above formula is as follows.
= 
= -9078.59 kJ/mol
Since, 2 moles of Pentaborane reacts with oxygen. Therefore, heat of reaction for 2 moles of Pentaborane is calculated as follows.
= -71.915 kJ/g
Thus, we can conclude that heat released per gram of the compound reacted with oxygen is 71.915 kJ/g.
Answer:
Filtration is a process in which insoluble matter is separated from a liquid. Filtration is a separation process in which a mixture is passed through a filter that allows one component to pass-through but blocks another component from passing through because of its matter and consistency. Heterogeneous mixtures can be separated into their respective constituents. For example, a mixture of mud and water can be separated through filtration process easily, because water being liquid will pass through the filter paper easily but the mud will not because of it being solid
A fragment of who’s prudent and not the only one who is the a front
Answer:
55mL of sodium hydroxide are required.
Explanation:
Given data:
Molarity of NaOH solution = 6.00 M
Number of moles of NaOH = 0.330
Volume required = ?
Solution:
Formula:
M = n/v
M = molarity
n = number of moles
v = volume
Now we will put the values in formula.
6.00 M = 0.330 mol / v
v = 0.330 mol / 6.00 M
v = 0.055 L (M = mol/L)
v = 0.055 L × 1000 mL/ 1L
v = 55 mL
55mL of sodium hydroxide are required.
