<span>ΔE = 0
(m_alum) (c_alum) Δt - (m_water)(c_water) Δt' = 0
(30) (897) (20) - (20)(4186) Δt' = 0
Δt' = 6.42857 °C</span>
Answer:
Diaphragm or Iris: Many microscopes have a rotating disk under the stage. This diaphragm has different sized holes and is used to vary the intensity and size of the cone of light that is projected upward into the slide.
Explanation:
Answer: D
sleep terror disorder
Explanation:
It is a sleeping disorder causing feelings of panic or dread which typically occur during the first hours of stage 3–4 non-rapid eye movement (NREM) sleep.
Answer:
T = 51.25°C
Explanation:
Applying the law of conservation of energy, we get:
where,
m₁ = mass of cold water = 175 g
m₂ = mass of hot water = 125 g
T = Final temperature of the mixture = ?
Therefore,
<u>T = 51.25°C</u>
