E=hc/l
E=
<span><span>E=<span>(6.626 x 10-34 J s)(3.0 x 108m/s )</span><span>=2.88 x 10-19J</span></span><span>6.90 x 10-7m</span></span>
Mass of Na2CO3 = 106g/mol
1 mole of Na2CO3 ------------ 106g
x moles of Na2CO3 ------------ 2.25g
x = 0.0212 moles of Na2CO3
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
mass of NaOH = 40g/mol
1 mole of NaOH ----------------- 40g
x moles of NaOH -------------------- 0.800g
x = 0.02 moles of NaOH
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
mass of Na2SO4 = 142g/mol
1 mole of Na2SO4 ---------------- 142g
x moles of Na2SO4 ------------------ 17.75g
x = 0.125 moles of Na2SO4
Answer: Option A.
does work that can depend on the path of motion.
Explanation:
A non-conservative force acting on a particle does work that can depend on the path of motion because a non conservative force is a type of force that can remove energy from a progressive system and this energy cannot be restored back and the forces are path dependent because it matters where the particle begin or end.
It is a type of force such as friction or air resistance. This type of force does work that only depend on the path of motion.
Answer: Most people think positively about chemistry. Chemistry has had a good impact on the world, such as the impact of renewable energy, clean water, and technology.
Explanation:
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