What are the three properties of bases?
Answers
2. Equation of basic substance ends in "OH"
3. Conducts electricity.
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When a nonmetal bonds with a nonmetal, they form a(n) ionic compound covalent compound element atom
In the world of chemistry a mole is a number of something a very large number of something.Just as a dozen is 12 of something a mole is about 6.02*10^23 of something.In chemistry we like the number of atoms or molecules in moles.If one mole is equal to 6.02*10^23 atoms and you have 9.00 *10^23 atoms then how many moles do you have?
A confirmation drug test is for the purpose of identifying specific drugs and the amounts present in the blood system. True False
A solution was prepared by dissolving 0.42 mol hexane into 500g CCl4. What is the change in freezing point of this solution? The Kf for CCl4 is 30.0oC/m. The freezing point of CCl4 is -22.92 °C.
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btw, this is more like an earth science question, not chemistry.
b)gains electrons and gains potential
c)energy gains electrons and loses potential energy
d)loses electrons and gains potential energy
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Answer : The correct option is a) Loses electrons and loses potential energy.
Explanation :
Reducing agent : In a redox reaction, it is oxidized by the loss of electrons and by the loses of potential energy. It is also called as electron donor.
Reducing agent reduces others by loss of electron and its oxidation state increases.
For example : Sodium is a reducing agent and itself oxidized as follows,
Therefore, the molecule that function as a reducing agent in a redox reaction is loses electrons and loses potential energy.
Final answer:
In a redox reaction, the reducing agent loses both electrons and potential energy. This process results in oxidation of the reducing agent as the oxidation state of the reducing agent increases.
Explanation:
Oxidation-Reduction Reaction
In a redox or oxidation-reduction reaction, the molecule acting as the reducing agent (or electron donor) loses electrons and loses potential energy. Hence, the correct option is a). The reducing agent donates electrons to another substance or molecule and, in this process, is itself oxidized. The oxidation state of the reducing agent increases. The reduction process involves a gain of electrons, but this gain happens to the substance that receives the electrons, not the one who donates them (the reducing agent).
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Answers
Answer:
4. 2.0 M CaC12(aq)
Explanation:
According to the van't Hoff factor, (the measurement of the solute's colligative properties effect (boiling point,freezing point depression)) a solution that has the highest point at standard pressure, id the one with the most particles or ions.
van't Hoff factor can also be described as the ratio between the original concentration of the solutions's atoms when the solution is dissolved and the concentration of the solutions taken from its mass.
Answer:
The possible options are :
(1) 1.0 M KC1(aq) (3) 2.0 M KCl(aq) (2) 1.0 M CaC12(aq) (4) 2.0 M CaC12(aq)
Answer is (4) 2.0 M CaC12(aq)
Explanation:
vant Hoff factor highest BP has the most particles...ions CaCl2 forms 3 ==> Ca2+ and 2Cl-.
The van 't Hoff factor i (named after Dutch chemist Jacobus Henricus van 't Hoff) is a measure of the effect of a solute upon colligative properties such as osmotic pressure, relative lowering in vapor pressure, boiling-point elevation and freezing-point depression.
B. 1/1 H
C. 0/1 H
D. 2/1 H
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The isotopes of the hydrogen atom are-:
▶1 , 2 and 3
So,
According to your options,
➡Only C is wrong.
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B. Diffusion
C. Active transport
D. Phagocytosis
Answers
Final answer:
Water leaves the cell by osmosis when placed in salt water.
Explanation:
When a cell is placed in salt water, water leaves the cell by osmosis. Osmosis is the movement of water molecules across a semi-permeable membrane from an area of lower solute concentration to an area of higher solute concentration.
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