Hey there,
I believe that this statement above would be
that <span>A double replacement reaction occurs when the positive ion of one compound replaces the positive ion of the other compound to form two new compounds during a chemical reaction.
~Jurgen</span>
Electron cloud is an informal term in physics. It is used to describe where electrons are when they go around the nucleus of an atom. The electron cloud model is different from the older Bohr atomic model by Niels Bohr. Bohr talked about electrons orbiting the nucleus.
Answer:
spring tides is the correct answer of your question
Answer:
Why do chemists use the mole as a counting unit? Because chemical reactions often involve large numbers of small particles, chemists use a counting unit called the mole to measure amounts of a substance. ... The discovery enabled scientists to classify certain chemical reactions as transfers of electrons between atoms.Explanation:
Answer is: osmotic pressure of aspirin is 0.025 atm.
m(C₉H₈O₄) = 45.0 ÷ 1000 mg/g = 0.045 g.
n(C₉H₈O₄) = m(C₉H₈O₄) ÷ M(C₉H₈O₄<span>).
</span>n(C₉H₈O₄) = 0.045 g ÷ 180 g/mol.
n(C₉H₈O₄<span>) = 0.00025 mol.
</span>c(C₉H₈O₄) = n(C₉H₈O₄) ÷ V(solution).
c(C₉H₈O₄) = 0.00025 mol ÷ 0.25 L.
c(C₉H₈O₄) = 0.001 M.
T = 25°C = 298.15 K.
<span>R = 0.08206 L·atm/mol·K, universal gas constant.
p = c </span>· R · T.
p = 0.001 mol/L · 0.08206 L·atm/mol·K · 298.15 K.
<span>p = 0.025 atm.
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