Which of the following would be the best choice for preparing a buffer with a pH = 8.0? Group of answer choices a solution of bo
ric acid and sodium borate, Ka = 5.8 × 10^–10 a solution of hypochlorous acid and sodium hypochlorite, Ka = 3.5 × 10^–8 a solution of formic acid and sodium formate, Ka = 1.8 × 10^–4 All of these solutions would be equally good choices for making this b
All matter exerts a force, which is called , that pulls all other matter towards its center. The strength of the force depends on the mass of the object: the Sun has more gravity than Earth, which in turn has more gravity than an apple. Also, the force weakens with distance. Objects far from the Sun won’t be influenced by its gravity.
The temperature of the 1 kg water will be lower. Q=mcΔt Q1= 1kg*c*Δt(1) Q2= 2kg*c*Δt(2)
Q1=Q2 1kg*c*Δt(1) = 2kg*c*Δt(2) Δt(1) = 2Δt(2) We can see that change in temperature for 1 kg will be 2 times more that change in temperature for 2 kg of water.
