A video-disc player that is not playing still uses 6.0 W of power. What is the
current into the video-disc player if it is plugged into a standard 120-V outlet?

Answer:

Silver nitrate (AgNO3) reacts with copper (Cu) to form copper(II) nitrate (Cu(NO3)2) and silver (Ag). This can be called a redox reaction because silver nitrate is reduced and copper is oxidized

Answer:

Explanation:

The table below indicates the “Molecular Geometry” of the central atom depending on whether the groups of electrons around it are covalent bonds to other atoms or simply lone pairs of electrons.

Answer:

C

Explanation:

a and b represent ice and melting respectively

Answer: 54 g

Explanation:

Answer:

Biochemistry is the discipline that studies the chemistry of life, and its objective is to explain form and function based on chemical principles. Organic chemistry is the discipline devoted to the study of carbon-based chemistry, which is the foundation for the study of biomolecules and the discipline of biochemistry. Both biochemistry and organic chemistry are based on the concepts of general chemistry, some of which are presented in Fundamentals of Physics and Chemistry Important to Microbiology.

Explanation:

According to  the Charle's law as pressure is constant the new volume of gas is 4.907 L.

Charles law is an experimental gas law which provides description about the behavior of gases which tend to expand on heating.It states that, at constant pressure, the temperature is in direct proportion with the volume that is,V∝T or V₁/T₁=V₂/T₂.The relation between volume and temperature is linear as the temperature increases volume also increases.

The graph of volume versus temperature is a straight line passing through the origin.The law was proposed by Jacques Charles , a french physicist in 1780.

In the given problem , on substituting values in above formula, V₂=3.8×278/359=4.907 L.

Thus , the new volume of methane gas is 4.907 L.

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Answer:

Answer is True

Explanation:

Addition reaction between water molecules and alkene molecules produces alcohol.

Addition reaction generally takes place across the unsaturated carbon compounds.

When water molecule (H₂O) is added to the alkene which may be ethene (C₂H₄) molecule then formation of product i.e. ethanol (CH₃CH₂OH) takes place through the addition of hydrogen and hydroxyl group across the double bond. And reaction is shown in the attached image.

Hence formation of alcohol product takes place.

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Turner internal conflict is connected to the setting through him feeling stifled in the town but free in the open air of the beach which is option A.

This is when an individual is not in agreement with one another or having a contradictory feeling.

In this case, Turner feels stifled in the town but free in the open air of the beach which are contradictory and the reason for his internal conflict.

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Answer:

Turner feels stifled in the town but free in the open air of the beach.

Explanation:

Correct on Edge

Answer: Potassium iodide

Explanation:

The entropy of the process in which the  individual ions first leave the crystal lattice is positive while the entropy of the process whereby the each ion becomes surrounded by a cluster of polar water molecules is negative.

The term entropy has to do with the degree of disorder in a system. The higher the entropy of the system, the more the disorderliness of the system.

Now, the entropy of the process in which the  individual ions first leave the crystal lattice is positive while the entropy of the process whereby the each ion becomes surrounded by a cluster of polar water molecules is negative.

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We can calculate the change in free energy for a reaction under nonstandard conditions by using the ΔG = ΔH - TΔS equation.

Change in gibbs free energy of any reaction will be calculated by uisng the below equation as:

ΔG = ΔH - TΔS, where

ΔH = change in enthalpy

T = temperature of reaction

ΔS = chnage in entropy

By putting all given values we can calculate the gibbs free energy of the reaction, and negative sign of energy shows the spontaneity of the reaction.

Hence by using the enthalpy, entropy and temperature we can calculate the free energy change.

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From the calculations in the question, we have that the dissociation constant is 2.5 * 10^-10.

The term Ka has to do with the acid dissociation constant and it is obtained from; Ka = [H+] [OBr–]/[HOBr]

Now, we are told that the hydrogen ion concentration at equilibrium is 9. 1 × 10–6 and the HOBr concentration is 0.33 M, it the follows that;

Ka = (9. 1 × 10–6)^2/ 0.33

Ka = 2.5 * 10^-10

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Answer:

The stars arent moving, we are.

Explanation:

The rotational movement of the Earth is what makes the star appear as if moving from the east to the west in the sky, as the planet rotates with an axis pointed towards the direction of our/the North Star.

Answer:

About 8.94.

Explanation:

Because we are given a 500. mL volumetric flask, the solution will have a volume of 500. mL.

Find the number of moles of zinc fluoride needed. Recall that molarity is simply moles per liter of solution:

[tex]\displaystyle 500.\text{ mL} \cdot \frac{0.173\text{ mol ZnF$_2$}}{1\text{ L}} \cdot \frac{1\text{ L}}{1000\text{ mL}} = 0.0865\text{ mol ZnF$_2$}[/tex]

Convert this to grams. The molecular weight of zinc fluoride is 103.38 g/mol:
[tex]\displaystyle 0.0865\text{ mol ZnF$_2$} \cdot \frac{103.38\text{ g ZnF$_2$}}{1\text{ mol ZnF$_2$}} = 8.94\text{ g ZnF$_2$}[/tex]

In conclusion, about 8.94 grams of solid zinc fluoride should be added.

i think the volume will be 57 , I think it will help u

People who are younger are usually at greater risk of alcohol related harm at a younger age. the younger you are when you drink alcohol, it can lead to you developing damage in your brain as well as problems later in life. drinking at a young age can lead to things like an inability to learn, problems with verbal skills, being dependent on alcohol, and depression.  

(1) The number of moles of oxygen gas is 0.123 mole.

(2) The volume occupied by the nitrogen gas is 50.75 Liters.

(3) The pressure exerted by the CO2 gas is 28.7 atm

(4) The temperature of the Cl2 gas is -118.37⁰C

The number of moles of oxygen occupied at the given condition is calculated as follows;

PV = nRT

n = PV/RT

where;

n = (2.5 x 1.2) / (0.08205 x 298)

n = 0.123 mol

PV = nRT

V = nRT/P

where;

V = (2 x 62.36 x 293) / (720)

V = 50.75 Liters

PV = nRT

P = nRT/V

where;

Molar mass of CO2 = 44

n = 25/44 = 0.568

P = (0.568 x 0.08205 x 308)/(0.5)

P = 28.7 atm

T = PV/nR

molar mass of Cl2 = 71 g

n = 5/71 = 0.07

T = (900 x 0.75)/(0.07 x 62.36)

T = 154.63 K

T = 154.63 - 273 = -118.37⁰C

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Answer:

0.215 L HCl

Explanation:

Using the relationship (M1 x V1 = M2 x V2) between Molarity (M) and Volume (v or L), we can find the volume of the 2nd volume amount.

First we rearrange our relationship equation to: [tex]V_2 = \frac{M_1 * V_1 }{M_2}[/tex]

Now, plug in the values. [tex]V_2 = \frac{0.2 * 2.8}{2.6}[/tex]

Calculating these values, we end up with the answer:

0.215 L HCl

Answer:

C: remaining at rest

Explanation:

Acceleration (a) is the change in velocity (Δv), remaining at rest is not changing the velocity.

Explanation:

Intermolecular forces: These are the attractive or repulsive forces acting between two molecule in interaction.

The attractive forces between molecules are of several types based on the interaction between molecules also known as Vander wall forces.

Bonding forces: They are also attractive forces acting between two constituents (atom, ion, radicals etc) and stabilizes the constituent particles by loss of energy. The bond between any two species are formed by the overlapping of corresponding orbitals.

Whenever positive overlapping occurs between species, the formation of Bonding molecular orbital (BMO) takes place. and when electron enters into BMO it loses energy. Alternative form of explaining the concept is Individual electron possess more energy than the electrons that paired or Bonded.

Now coming to your question,

All the intermolecular forces are formed by weak attractive forces (vanderwall forces) which includes Ion-dipole forces, Ion-induced-dipole forces, Dipole-dipole forces, Dipole-induced-dipole forces, Hydrogen bonds & London forces.

All these forces are temporary and weak, and formed by the poles generated on molecule due to shift of electron, for e.g. Any molecule having more electron at one pole and less electron at another pole then that molecule start acting as charged body when that charged body comes in contact with opposite pole of another charged body the interaction takes place, since the electrons are dynamic and unsteady it's not possible that the pole will keep acting same as before. hence the intermolecular forces are generally weaker.

On the other side the Bonding electrons, are formed by the various strong overlapping such as between Head to Head overlapping leads to formation of Sigma bond which is the strongest bond takes alot of Energy to break & Lateral overlapping lead to formation of pi bond which is also stronger bond than that of Hydrogen bond.

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Answer:

I'm not all the way sure but I think it is C

Explanation:

The reason is because an ionic bond essentially donates an electron to the other atom participating in the bond. Also, the C-O I think is polar since it is evenly distributed.

Based on the electronegativity difference between them, K-C is ionic, and C-O is polar covalent.

A bond is formed by the interaction of two atoms. A bond can be either ionic or covalent.

Now we have to look at the electronegatives on each bond. The electronegativity difference between the K-C bond is larger than that between the C-O bond hence, K-C is ionic, and C-O is polar covalent.

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Answer: A-, NA+ And OH-

Explanation: Thank me later

Answer:

incisors, molars, canines.

Explanation:

All of these 3 teeth types appear in ourselves so in conclusion mammals. Plus there has never been gills in any mammal.

Answer:

Empirical Formula N2O6Sr Strontium Nitrate

Explanation:

N=13.2% O=45.4% Sr=41.4%

Answer:

trigonal pyramidal

Explanation:

Looking at the PCl3 molecular geometry it is trigonal pyramidal with a bond angle of approx. 103o. The is mainly due to the disproportionate influence or greater repulsion of the phosphorus lone pair which makes it deviate from the ideal angle of 109o.

Answer:

I believe the molecular geometry of PCL3 would be trigonal planar.

Explanation:

Answer:Artificial light from cities has created a permanent "skyglow" at night, obscuring our view of the stars. Here's their map of artificial sky brightness in North America, represented as a ratio of "natural" nighttime sky brightness. In the black areas, the natural night sky is still (mostly) visible.

Explanation:

Answer:

0.7802 M

Explanation:

Data:

Wanted:

Equation:

M = [tex]\frac{mol}{L}[/tex]

Solution:

1. Convert mL to L:

2. Convert g to mol:

3. Molarity Equation:

Answer:

Explanation:

Mole weight of NaNO3 ====> ~~ 85 gm

6.631 / 85   = # moles in .1 liter

6.631/85  / (.1)  = .78 M

Answer:

A D E hope it helps. have a great day