Answer:
91.33 L
Explanation:
For an ideal gas, the product between the gas pressure and the gas volume is proportional to the absolute temperature of the gas. Mathematically:
where:
p is the pressure of the gas
V is the volume of the gas
T is the absolute temperature of the gas
For a transformation of the gas, we can write:
For the sample of krypton in this problem, we have:
(initial pressure)
(initial volume)
(initial temperature)
(final pressure, at stp)
(temperature at stp)
Therefore, the volume at stp is:
The molar concentration of NaOH can find out from the molarity of the titrant HCl. The molarity of NaOH is found to be 0.038 molar.
What is molarity?
Molarity is the number of moles of solute per volume of solution in liters. Here, the HCl has the density of 0.7292 g/l and volume 20L . Its mass is calculated as:
mass = density × volume
= 0.7292× 20L
= 14.58.
The molar mass of HCl is 37.5. Thus its number of moles in the solution is 14.58/37.5 = 0.388.
At the end point the number of moles of NaOH and HCl will be equal thus, where the volume of the NaOH solution is 10 ml. Now the molarity can be find out as follows:
molarity = number of moles /volume
= 0.388/10 = 0.038 M.
Hence, the molarity of HCl is 0.038 M.
To find more on molarity, refer here:
brainly.com/question/2817451
#SPJ1
Explanation:
The bone Wich is answer A
Explanation:
To calculate the heat released in the reaction, we use the formula-
Q = m×c×Δt
Where
Q - The heat energy
m - the mass of the object/substance being heated
c - the specific heat of the object/substance being heated
Δt - the change in temperature in °C
The molar mass of a compound tells you the mass of 1 mole ofthat substance. In other words, it tells you the number of grams per mole of a compound. The units for molar mass are, therefore, grams/mole. ... This is why you find the relative atomic mass ofcarbon in the atomic table as 12.0107 and not exactly 12.