CHEMISTRY HIGH SCHOOL

What is the charge of an electron?A.) Positive one
B.) Positive two
C.) Negative one
D.) Negative two

Answers

Answer 1
Answer:

The correct answer is C. An electron has a charge of -1 and a smaller mass than a proton. Proton has the same mass with the neutron. The ratio between the mass of a proton and an electron is about 2000. An electron has an equal value but negative charge with the proton.

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Which two organic compounds share a functional group?

Answers

Both Octane and Propane have the same functional group (Alkanes)
Both Ethene and Propene have the same functional group (Alkenes)
Both Ethyne and Butyne have the same functional group (Alkynes)
Both Ethanol and Propanol have the same functional group (Alcohol)
Both Ethanoic Acid and Propanoic Acid have the same functional group                    (carboxylic acid)

What do the formulas for table salt, NaCl, and water, H2O indicate about the compounds?

Answers

The formulas indicate the number of elements in each compound. Notice the difference in ratios: 
NaCl is 1:1, while H2O is 2:1.

When both forward and reverse changes are physical changes, the resulting equation represents a _____. a. physical equilibrium
b. chemical equilibrium
c. reversible reaction
d. none of the above

Answers

When both forward and reverse changes are physical changes, the resulting equation represents a physical equilibrium. The correct answer is A. 

Answer:

1.A

2.FALSE

3.C

100%

If the Kelvin temperature of a gas is tripled and the volume if doubled, the new pressure will be ___. A. 3/2 the original pressure B. 1/6 the original pressure C. 5 times the original pressure D. 2/3 the original pressurethe answer isnt b or c

Answers

The answer is 3/2 the original pressure. The concept behind this is the ideal gas law wherein it states that Pressure (P) times volume(V) is equal to number of moles (n) times ideal gas constant (R ) times temperature (T). Since you’re trying to calculate for the pressure you use P=nRT/V. Input 3 to Temperature and 2 to volume. You’ll get a pressure of 3/2 which is 3/2 times the original pressure. 

Which best describes the oxidizing agent in this reaction? Cl2(aq) + 2Brmc003-1.jpg(aq) mc003-2.jpg 2Clmc003-3.jpg(aq) + Br2(aq)

Answers

The balanced chemical equation is this:
Cl2(aq) + 2Br-(aq) --> 2Cl- + Br2(aq)

Looking at each substance involved in the reaction:
Cl2 has 0 charge and gains a charge of -1 after the reaction
Br- has a charge of -1 but turns to 0 after the reaction

Cl2 gained an electron which means it is the reduced substance
Br- lost an electron which means it is the oxidized substanced
Consequently, Cl2 is the oxidizing agent and Br- is the reducing agent.

Answer:

Bromine (Br) loses an electron, so it is the reducing agent.

Explanation:

EDG20

Mercury is often used as an expansion medium in a thermometer. The Mercury sits in a bulb on the bottom of the thermometer and rises up a thin capillary as the temperature rises. Suppose a Mercury thermometer contains 3.550 g of mercury and has a capillary that is 0.190 mm in diameter. How far does the Mercury rise in the capillary when the temperature changes from 0.0 degrees Celsius to 25.0 degrees Celsius? The density of Mercury at these temperatures is 13.596 g/cm^3 and 13.534 g/cm^3, respectively.

Answers

Just switch it to wumbo
Other Questions
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Explain the relationship between chemical bonds and energy in the body.
Which statement best describes the pH of pure watera. It is neutral because the concentration of hydronium ions equals that of hydroxide ions b. it is neutral because the pure liquid contains neither hydronium ions not hydroxide ions c. it is acidic because it has a hydronium ion concentration of 1.0 x 10-7 M d. its basic because it has a hydroxide ion concentration of 1.0 x 10-7 M
Electrons, protons, and neutrons are three subatomic particles of an atom. If the atom undergoes a change and becomes a positive ion, which subatomic particle is lost in this process? Neutron Proton Electron