Answer:
When muscles are required to work harder than they're used to or in a different way, it's believed to cause microscopic damage to the muscle fibres, resulting in muscle soreness or stiffness. DOMS is often mistakenly believed to be caused by a build up of lactic acid, but lactic acid isn't involved in this process.
Explanation:
Answer:you in connections too?
Explanation:
I think is altitude because tbh it don’t even mean nothing
Answer:
H1 = 63.3 kJ
Explanation:
Given:
ΔL = 2.256 kJ/g
Cp = 4190J/kg⋅K
Steam at 100°C in contact with your skin, condenses to water at 100°C. Therefore,
Q = M × ΔL
= (25.0 g)(2.256 kJ/g)
= 56.4 kJ
This condensed water at 100°C is then cooled to 34°C. The heat involved with this temperature change is;
Q = m × Cp × ΔT
= (25 × 1kg/1000g × 4190 × (100°C - 34°C)
= 6913.5 J
= 6.914 kJ
The total heat H1,
= (56.4 kJ) + (6.9135 kJ)
= 63.3 kJ.
according to ideal gas equation , we have
PV = n RT
where P = pressure , V = Volume , n = number of moles , R = gas constant and
T = temperature
the formula can be rearranged as
T = PV/(nR)
at constant temperature , the formula can be reformed as
T₁ = T₂
P₁V₁/(nR) = P₂V₂/(nR)
hence
P₁V₁ = P₂V₂
where
P₁ = initial pressure
P₂ = final pressure = 2 P₁
V₁ = initial volume
V₂ = final volume
P₁V₁ = (2 P₁ )V₂
V₁ = (2) V₂
V₂ = V₁ /2
hence the Volume is halved