The information below describes a redox reaction.Cr3+(aq)+2Cl-(aq)---->Cr(s)+Cl2(s)
2Cl-(aq)--->Cl2(g)+2e-
Cr3+(aq)+3e- ---->Cr(s)
What is the final, balanced equation for this reaction?
1.) 2cr3+(aq)+6Cl-(aq) ------> 2Cr(s)+3Cl2(g)
2.) 2Cr3(aq)+2Cl-(aq)+6e- --->Cl2(g)+2Cr(s)
3.) Cr3+(aq)+6Cl-(aq)+3e- ---->2Cr(g)+3Cl2(g)
4.) Cr3+(aq)+2Cl-(aq)------>Cr(s)+Cl2(g)
Answers
Explanation:
1) Write the oxidation half-reaction:
2) Write the reduction half-raction:
3) Multiply each half-reaction by the appropiate coefficient to equal the number of electrons of both half-reactions.
4) Add both half-reactions
And that is the answer. You can count the atoms and charges on every side and check they are equal.
Answer:
A
Explanation:
got it correct on edge
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Transpiration is the loss of water from the leaves of plants. The stomata of leaves must open to allowcarbon dioxide to enter the leaf for photosynthesis, but when they are open, water vapor escapes intothe atmosphere.HYPOTHESIS: As the intensity of light is increased, the rate of transpiration will increase, asmeasured in by the loss of mass of the plant.Independent variable:Dependent variable:
This is how osmium appears in the periodic table.A purple box has O s at the center and 76 above. Below it says osmium and below that 190.23.Rounded to the nearest whole number, how many neutrons, on average, are in an atom of osmium?76114190266
B) theoretical yield
C) percent yield
Answers
Answer:
A) actual yield
Explanation:
Theoretical yield is the amount of product expected based on the stoichiomety.
Percent yield is the actual yield over the theoretical yield.
Answers
Answer:
Acceleration
Explanation:
Acceleration =
Answers
Answer:
The new volume of the balloon is 46.1 L
Explanation:
Step 1: Data given
Initial volume of the balloon = 27.3 L
Initial pressure in the balloon = 738 mmHg = 0.97105 atm
Initial temperature in the balloon = 26.9 °C = 300.05 K
The pressure decreases to 375 mmHg = 0.493421 atm
The temperature lowers to -15.6 °C = 257.55 K
Step 2: Calculate the volume
P1*V1 / T1 = P2 *V2 / T2
⇒with P1 = the Initial pressure = 738 mmHg = 0.97105 atm
⇒with V1 = Initial volume of the balloon = 27.3 L
⇒with T1 = Initial temperature in the balloon = 26.9 °C = 300.05 K
⇒with P2 = the decreased pressure = 0.493421 atm
⇒with V2 = the new volume = TO BE DETERMINED
⇒with T2 = the lowered temperature = 257.55 K
0.97105 * 27.3 / 300.05 = 0.493421*V2 / 257.55
V2 = 46.1 L
The new volume of the balloon is 46.1 L
Answers
Final answer:
To find the concentration of X+ at a potential of 0.0610V, use the Nernst equation which describes the electrochemical potential of a system. Given the initial concentration of X+ and its potential, rearrange the equation to solve for the concentration of X+ at the new potential.
Explanation:
The problem given can be solved using the Nernst equation, which relates the reduction potential of an electrochemicalreaction (half-cell or full cell reaction) to the standard electrode potential, temperature, and the activities of the chemical species undergoing the reduction.
The Nernst equation at 25 °C can be simplified as:
E = E° - (0.059/n) log [Cl^- /[X^+]
Where E is the electrode potential, E° is the standard electrode potential, n is the number of electron transferred and [Cl^- /[X^+] is the ratio of ion activities. Since the ion's activity coefficient is 1, we can treat [X^+] as the concentration of X^+.
If you apply this equation, using the given potentials and known initial concentration of X^+, you can solve for the concentration of X^+ when the potential is 0.0610V.
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Final answer:
The concentration of X+ can be calculated using the Nernst equation by substituting the initial and final potentials. By solving the equation, you can find the concentration of X+.
Explanation:
The concentration of X+ can be calculated using the Nernst equation. The Nernst equation relates the potential of a cell to the concentration of the ions involved.
The Nernst equation is given by:
E = Eº - (0.0592/n)log(Q)
Where E is the potential, Eº is the standard electrode potential, n is the number of electrons transferred, and Q is the reaction quotient.
In this case, the initial potential is 0.0460 V and the final potential is 0.0610 V. By substituting these values into the Nernst equation, you can solve for the concentration of X+.
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A) CH3CHO
B)CO2
C)CH3Cl
D)C2H6
E)NONE
Answers
There are two types of molecule in chemistry, one is polar molecule and other is non polar molecule. Therefore, among all the given option none is polar molecule. The correct option is option D.
What is polar molecule?
A polar molecule is a type of chemical compound where there is an uneven distribution of electrons among the covalently bound atoms. The term "polarity" refers to how unlike two molecules' electrical poles are from one another. If they are quite dissimilar, the species is said to be a highly polar molecule.
Dipole moment tells about the extent of polarity in a molecule. It is measured in units of Debye. It can be calculated by multiplying charge and the separation between these two charges. Among all the given option none is polar molecule.
Therefore, among all the given option none is polar molecule. The correct option is option D.
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the answer is none
Explanation:
Water
Water is the most polar molecule because a bond between oxygen and hydrogen has the most difference out of the atoms listed. Although the oxygen has two hydrogens bonded, this does not decrease the electronegativity of oxygen, but oxygen unfairly shares sets of electrons from both hydrogens, making it more polar still
Answers
When you fill a basin with liquid water, you can see that the water takes the shape of the container in which it is contained. This is because in the liquid state, water has molecules farther apart than in the solid state.
You can notice this property when performing an experiment with liquid and solid water.
When filling a glass, liquid water takes on the shape of a glass, and solid water, such as an ice cube, remains the same shape when placed in a glass.
Therefore, when filling a basin with water we perceive a property of the physicalstate of water, in liquid form. Water is one of the few substances that can be found naturally in liquid, solid and gaseous states.
Learn more here:
Answer:
Cautiously and avoiding filling in the central area so that it does not overflow when filling, since being very beach makes filling difficult.
Explanation:
The basins are shallow, that is why filling is difficult, the filling must be slow, low intensity and at the edges not placing the water filling in the center of the basin.