Answer:
When you inhale, your diaphragm contracts and your lungs expand.
Explanation:
P + 3Cl > PCl3
because you need to make sure you have the same amount of chlorine and phosphorus on both sides of the equation
The atomic number is usually shown at the top of the element (on periodic table)
(I’ve attached an image for you to understand visually)
Answer: 26
Freezing point depression is a colligative property.
The formula that rules it is:
ΔT f = Kf * m
Where m is the molality of the solution => m = moles of solute / Kg of solvent
=> m = 0.31 mol / 0.175 kg = 1.771 m
And kf = 1.86 °C/m
=> ΔTf = 1.771 m * 1.86 °C / m = 3.3 °C
=> Freezing point of the solution = normal freezing point of water - 3.3 °C = 0 - 3.3°C = - 3.3°C.
Answer: -3.3 °C
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