Who earned the nobel prize twice for their work with radioactivity
Answers
Answer:
Marie Curie, née Maria Salomea Skłodowska, (born November 7, 1867, Warsaw, Congress Kingdom of Poland, Russian Empire—died July 4, 1934, near Sallanches, France), Polish-born French physicist, famous for her work on radioactivity and twice a winner of the Nobel Prize.
Explanation:
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Answer:
Marie Curie is the one who earned the nobel prize twice for her work with radioactivity
Related Questions
A real gas behaves least like an ideal gas under the conditions of(1) low temperature and low pressure (2) low temperature and high pressure (3) high temperature and low pressure (4) high temperature and high pressure
Simple chem question - please help!Given the equation: N2 +2O2 → 2NO2, what mass of oxygen is required to react completely with 7g of nitrogen? A) 8 g B) 16 g C) 32 g D) 64 g
The calculation of quantities in chemical equations are called...
A 4.0L weather balloon is launched from sea level where the temperature is 25°C. It rises to an altitude where the pressure is 0.05atm and the temperature is -75°C. If the balloon has the capacity to expand to a 50 liter volume before bursting, will the balloon survive?
(2) The bonds between the atoms in a CH4 molecule are ionic.
(3) The geometric shape of a CH4 molecule distributes the charges symmetrically.
(4) The geometric shape of a CH4 molecule distributes the charges asymmetrically.
Answers
The following statement explains why a molecule of is nonpolar:
.
Further explanation:
Covalent Bond
This type of bonding takes place when the bonded atoms mutually share electron pairs between them. It is also called the molecule bond. The chemical compounds formed as a result of this bond are called chemical compounds.
The polarity of any bond is primarily governed by two factors; electronegativity difference and symmetry. A bond is said to be polar if the bonded atoms have a considerable molecular bondelectronegativity difference between them. But if there is very small or no electronegativity difference between the bonded atoms, the resulting bond is nonpolar in nature.
Symmetry is another factor responsible for the polarity of the bond. The charge distribution is symmetrical in case symmetry is present in the molecule and as a result, the molecule is said to be nonpolar. But if there is asymmetry in the shape of the molecule, it will be polar in nature.
The electronegativity difference between carbon and hydrogen atoms in molecule is very small or negligible so the bonds between the atoms in
are nonpolar in nature. But the hydrogen atoms are placed in symmetrical positions with respect to the central carbon atom, imparting symmetry to
molecule and therefore it is nonpolar (For structure, refer to the attached image).
Learn more:
- Identification of ionic bonding: brainly.com/question/1603987
- Chemical bonds in NaCl: brainly.com/question/5008811
Answer details:
Grade: High School
Chapter: Ionic and covalent compounds
Subject: Chemistry
Keywords: covalent bond, covalent compounds, CH4, carbon, hydrogen, symmetry, electronegativity difference, nonpolar.
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The balanced reaction is:
Mg (s) + 2HCl (aq) = H2 (g) + MgCl2 (aq)We are given the amount of reactants to be reacted. This will be the starting point of the calculations.
.125 L HCl solution (6.0 mol HCl / L solution) ( 1 mol H2 / 2 mol HCl ) ( 2.02 g H2 / 1 mol H2 ) = 0.76 g H2
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Answer:
150ml .........60 minute
x ........... 1 minute
x = 150ml× 1 minute / 60 minute
x = 2.5ml
Explanation:
it is known that the client receives 150ml of the solution for over an hour.convert the hour into minutes,then we do not know how much liquid a client receives in a minute. we cross multiple the values to get the value in ml. for every one minute the client receives 2.5ml of the fluid.
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b. Products are favored over reactants in the reaction.
c. Reactants are favored over products in the reaction.
d. All of the reactants have turned into products in the reaction.
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Final answer:
If Keq equals 1, this means the reaction is at equilibrium and neither the reactants nor the products are favored. The concentrations of both remain constant over time.
Explanation:
When Keq = 1, it implies that the reaction is at equilibrium and neither the reactants nor the products are favored in the reaction. So, the correct answer to your question is option a: Products and reactants are equally favored in the reaction.
In this situation, the concentrations of products and reactants remain constant over time because the rate of the forward reaction equals the rate of the reverse reaction.
Learn more about Equilibrium Constant here:
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Final answer:
For a chemical equilibrium, Keq = 1 indicates that neither reactants nor products are favored; rather, they are present in roughly equal amounts at equilibrium. So the correct answer is Option C.
Explanation:
If Keq = 1 for a chemical equilibrium, it means that products and reactants are equally favored in the reaction. In other words, neither the reactants nor the products are favored when the reaction reaches equilibrium. Equilibrium constants help us understand the extent to which a reaction occurs. When Keq is greater than 1, the concentration of products at equilibrium is greater than the concentration of reactants, suggesting a product-favored reaction. Conversely, when Keq is less than 1, the concentration of reactants is higher, indicating a reactant-favored reaction. When Keq is equal to 1, it implies that the concentrations of reactants and products are roughly equal at equilibrium, reflecting a state of balance in the chemical system.
Learn more about Equilibrium Constant here:
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Answers
1 mol = 6.022 x 10²³ atoms
In order to find how many atoms, dimly multiply the amount of moles you have by 6.022 x 10²³ or Avogadro's number.
So you have 1.75 mol CHC1₃ x (6.022x10²³) = 1.05385 x 10²⁴ atoms of CHCl₃
But now you have to round because of the rules of significant figures so you get 1.05 x 10²⁴ atoms of CHCl₃