Answer:
3.2 Calories
Explanation:
Here we will use a formula
Heat added in calories = Mass of glass x Increase in temperature x specific heat of glass
As we know that, specific heat is the amount of energy required to raise the temperature of one gram of any substance by 1°C. It has a constant value for every substance and for glass the specific heat is .16 calories/gm
Incorporating the values of mass (m), temperature(T) and specific heat (c) in formula.
calories (small calories) = l.0 g x 20 degrees x .16 calories/gm/°C
= 3.2 calories
Hope it helps:)
Answer:
The heat gain by the system,
q
=
−
250
kJ
.
The work done on the system ,
w
=
−
500
kJ
.
The First Law of Thermodynamics state that
Δ
U
=
q
+
w
=
−
750
kJ
Explanation:
Answer:
182.156g
Explanation:
grams = 49/.269 = 182.156g needed
Answer:
Mass = 627.2 g
Explanation:
Given data:
Number of moles of barium nitrate = 2.4 mol
Mass of barium nitrate = ?
Solution:
Formula:
Mass = number of moles × molar mass
Molar mass of barium nitrate = 261.337 g/mol
Mass = 2.4 mol × 261.337 g/mol
Mass = 627.2 g
H30 are also known as hydroniums