Because of Bronze's high...... what?
Answer:
Answers are in the explanation
Explanation:
A bomb calorimeter is a <em>constant volume </em>calorimeter in which medition of change in temperature allows the medition of change in internal energy (ΔU) for chemical reactions or physical changes.
This ΔU can be converted in ΔH thus:
ΔH = ΔU + PV
That means that:
A bomb calorimeter is a piece of equipment designed to measure <em>delta H</em>
As there was said:
Reactions carried out in a bomb calorimeter occur at constant <em>volume</em>
To calculate the heat absorbed or released by a reaction carried out in a bomb calorimeter, we use the equation: <em>q = C * delta T</em>
Where C is the heat capacity of the calorimeter, delta T is the change in temperature and q is the heat produced in the chemical or physical process
I hope it helps!
<h3>Answer:
234 90Th → 0 -1e + 234 91Pa Explanation:
Given that :
Thorium 234 decays by beta emission Beta emission = 0, - 1 e
234 90Th → 0 -1e + 234 91Pa Hence, when Thorium 234 90 undergoes a beta Decay ; mass number remains the same at 234 while atomic number increases by 1, becoming (90 + 1) = 91 to form a protactinium nuclide.
</h3>
Answer:
Molar concentration = 2.35 M (Approx)
Explanation:
Given:
Density of solution = 1.151 g/ml
2.55 molal = 2.55 moles of solute/ kg
Find:
Molar concentration
Computation:
Molar mass of H2SO4 = 2(1.0079) + (32.066) + 4(15.999)
Molar mass of H2SO4 = 98.0778
Molar mass of H2SO4 = 98 g/mol (Approx)
Mass of solution = 2.55(98)g + 1000 g
Mass of solution = 1249.9 gm
Volume of solution = 1249.9 / 1.151 = 1086 ml
Volume of solution = 1.086 L
Molar concentration= 2.55 / 1.086
Molar concentration = 2.35 M (Approx)
Answer:
16.566g
Explanation:
The 0.223M barium bromide means there are 0.223 moles of barium bromide is 1000ml of barium bromide solution.
Now, we firstly need to know the number of moles in 250ml
And that is = (0.223 * 250)/1000 = 0.05575 mole
Now we need to know the amount in g of barium bromide to add.
From the relation : mass = number of moles * molar mass.
The molar mass of barium bromide is 297.14g/mol
mass = 297.14 * 0.05575 = 16.566g
