Stop using nonrenewable resources that pollute the air and Earth, instead use things that don't produce pollution like go to work on your bike. And even if people cannot change the type of resources they use they can drastically cut down on what is used, like use a carpool system to help not pollute as much
Answer:
The answer to your question is: Volume = 0.117 l
Explanation:
Data
V = ?
M = 9 x 10 ⁻²
mass = 1,9 g of KH₂AsO₄
MW KH₂AsO₄ = 39 + 2 + 75 + 64 = 180 g
Process
180 g of KH₂AsO₄ ------------------ 1 mol
1.9 g ------------------ x
x = 0.0011 mol of KH₂AsO₄
Molarity = # of moles / volume
Volume = # of moles / molarity
Volume = 0.0011 mol of KH₂AsO₄ / 0.09
Volume = 0.117 l = 117 ml
The correct answer would be <span>5.43 x 10^-4</span>
Answer:
Bohr thought that electrons orbited the nucleus in circular paths; whereas in the modern view atomic electron structure is more like 3D standing waves. Bohr built upon Rutherford's model of the atom. ... He believed that electrons moved around the nucleus in circular orbits with quantised potential and kinetic energies.
Explanation: