z) Marie Curie
Explanation:
Marie Curie was awarded the nobel prize in chemistry for the year 1911. This was because of her research and discovery of the radioactivity.
- The was the first woman to be awarded the nobel prize. She won the award alongside her husband, Pierre Curie.
- Pierre and Marie Curie were both French chemist.
- Their work led to the discovery of polonium and radium as radioactive elements.
- She died of exposure to ionizing radiations from radioactive particles.
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Transmutation brainly.com/question/3433940
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Answer:
An increase in temperature lead to more effective collisions between reactant particles
increase in the rate of a chemical reaction because the number of molecules with sufficient energy to react increases.
Explanation:
Answer:
4.07
Explanation:
There is some info missing. I think this is the original question.
<em>A solution is prepared at 25 °C that is initially 0.057 M in nitrous acid (HNO₂), a weak acid with Ka = 4.5 × 10⁻⁴, and 0.30 M in sodium nitrite (NaNO₂). Calculate the pH of the solution. Round your answer to 2 decimal places.</em>
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Nitrous acid is a weak acid and nitrite (coming from sodium nitrite) is its conjugate base. Together, the form a buffer system. We can calculate its pH using the Henderson-Hasselbach equation.
pH = pKa + log [base]/[acid]
pH = -log 4.5 × 10⁻⁴ + log 0.30/0.057
pH = 4.07
Neutralize it with a alkaline
