Data:
Q = 402.7 J → releases → Q = - 402.7 J
m = 16.25 g
T initial = 54 ºC
adopting: c = 4.184J/g/°C
ΔT (T final - T initial) = ?
Solving:
Q = m*c*ΔT
-402.7 = 16.25*4.184*ΔT
-402.7 = 67.99*ΔT
If: ΔT (T final - T initial) = ?
Answer:
1.07×10²¹ molecules are needed to sound the alarm
Explanation:
Let's convert the mass of CO to moles, to determine the amount of molecules.
0.05 g . 1 mol / 28 g = 1.78×10⁻³ moles
Now we can determine the number of molecules with the NA
1 mol has 6.02×10²³ molecules
1.78×10⁻³ moles may have (1.78×10⁻³ . 6.02×10²³) / 1 = 1.07×10²¹ molecules
Answer:
but what is your question? it's just like the moon going around earth while earth along with all the other planets revolve around the sun
Explanation:
Answer:
P2 = 150.4 KPa
Explanation:
Gay-Lussac's Law:
at constant volume, the pressure of a gas varies directly with the temperature
∴ P1 = 55 KPa
∴ T1 = - 100.0°C ≅ 173 K
∴ T2 = 200°C ≅ 473 K
⇒ P2 = ?
⇒ P2 = (473 K)(55 KPa) / (173 K)
⇒ P2 = 150.4 KPa
Kinetic energy is an object in motion, potential energy is the potential for energy. Energy is the ability to make change, so kinetic energy is in the process of impacting something else.