What are five key accomplishments of Marie Curie?

Chemistry

1 answer:

shusha [124]3 years ago

5 0

Her discovery of radium and polonium.

She was the first woman to win a nobel prize and a second one as well!

Marie Curie was the first women to be appointed as the director of the physics lab at Sorbonne.

She was also the first woman to become a professor at the University of Paris.

She helped make radiology units which were again portable and those assisted the field surgeons during the war.

Hope this helps :))

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Write word equations for the reactions of a) magnesium with chlorine b) potassium with oxygen c) sodium with bromine d) carbon w

IRINA_888 [86]

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b) Potassium + Oxygen -> Potassium oxide
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c) Sodium + Bromine -> Sodium bromide
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What is the concentration created when 380.0g of Pb(NO3)2 is added to 330.0 mL of solution?

Juliette [100K]

The concentration of lead nitrate is 3.48 M.

<u>Explanation:</u>

The molarity can be found by dividing moles of sucrose by its volume in litres. We can find the number of moles of sucrose by dividing the given mass by its molar mass. Now we can find the moles as,

Here mass of Pb(NO₃)₂ is 380 g

Molar mass of Pb(NO₃)₂ is 331.2 g/mol

Number of moles = $$\frac{given mass}{molar mass}$