It keeps the plant upright, and it provides nutrients
Answer:B. A liquid changes to a solid.
Explanation:
The building blocks of matter are B. Atoms and molecules.
Na₂SO₄ → 2Na⁺ + SO₄²⁻
c₁(Na⁺)=2c(Na₂SO₄)
n₁(Na⁺)=c₁(Na⁺)v₁=2c(Na₂SO₄)v₁
NaCl → Na⁺ + Cl⁻
c₂(Na⁺)=c(NaCl)
n₂(Na⁺)=c₂(Na⁺)v₂=c(NaCl)v₂
n(Na⁺)=n₁(Na⁺)+n₂(Na⁺)=2c(Na₂SO₄)v₁+c(NaCl)v₂
v=v₁+v₂
c(Na⁺)=n(Na⁺)/v={2c(Na₂SO₄)v₁+c(NaCl)v₂}/(v₁+v₂)
c(Na⁺)={2*0.400*0.1+0.600*0.2}/(0.1+0.2)=0.667 mol/L
c(Na⁺)=0.667M
Based on the scenario, the matter escaping from the pot is an example of an : C. Open system because heat and matter are both able to enter or leave the system
The key word here is 'steam can be seen escaping from the pot' , which indicate that the matter and heat able to leave the system after it's entered.
hope this helps