Which of the following is one way to prevent the corrosion of iron

Answers

Answer 1

Answer: D) its the easiest and most effective.

Related Questions

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According to Hess’s law, if a series of intermediate reactions are combined, the enthalpy change of the overall reaction isthe difference between the enthalpies of the intermediate reactions.the sum of the enthalpy changes of the intermediate reactions.the product of the enthalpy changes of the intermediate reactions.the fraction of the individual enthalpies of the intermediate reactions.
How many grams of CuSO4 are there in 100.0g of hydrate?
Explain why substances with giant covalent structures are solids with high melting and boiling points ?

7. Methane, CH, burns in oxygen gas to form water and carbon dioxide. Wequation for this reaction?a. CH4+ O H2O CO2b. CH4+ 40 2H20+ CO2c. CH4 O2 H2O CO2d. CH4+ 202 2H20 CO28. How many atoms are present in 3 moles of chromium?c. 1.80 x 1024 atomsa. 6.02 x 1023 atomsb. 1.80 x 1023 atomsd. 52.00 atoms
9. How many grams of CO2 are in 2.1 mol of the compound?a. 21.0 gc. 66.0 gb. 44.0 gd. 92.4 g

Answers

7) the answer is D. You need to know that oxygen gas is O₂ which means that A and B can't be right. Then you need to see which one is balanced and since D is and C is not, the correct answer has to be D.

8) You need to know that 1 mole of anything contains 6.02×10²³ particles. therefore you multiply 6.02×10²³ by 3 to get 1.806×10²⁴ atoms.

9) You need to multiply the number of moles of carbon dioxide by the molar mass of carbon dioxide (44g/mol). 2.1mol×44g/mol=92.4g. Therefore the answer is 92.4g of CO₂.

I hope this helps. Let me know if anything is unclear.

What is a chemical reaction that absorbs heat called?

Answers

The chemical reaction that absorbs heat is called as an endothermic reaction.

An endothermic reaction is defined as a chemical reaction which is a thermodynamic process accompanied by an increase in enthalpy of the system.In this process, a system absorbs energy from the surroundings which is mainly thermal energy.

Thus an endothermic reaction leads to an increase in the temperature of the system with a decrease in the temperature of the surroundings.Endothermic reactions usually involve the formation of bonds which requires input of energy.In endothermic reactions, entropy of the surrounding decreases.

Many endothermic processes involve the physical changes rather the chemical changes.In an endothermic reaction ,the potential energy of products is greater than that of reactants.

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Answer:

Chemical reactions can be classified as either exothermic or endothermic. An exothermic reaction releases energy into its surroundings. An endothermic reaction, on the other hand, absorbs energy from its surroundings in the form of heat.

Explanation:

In relation to chemical solutions, which term does not express a degree of saturation?A: unsaturated
B: saturated
C: supersaturated
D: oversaturated

Answers

Answer: The correct answer is Option D.

Explanation:

From the given options:

Option A: Unsaturated solution is defined as the solution in which more solute particles can be dissolved in the solvent.

Option B: Saturated solution is defined as the solution in which no more solute particles can be dissolved in the solvent.

Option C: Supersaturated solution is defined as the solution in which more amount of solute particles is present than the solvent particles.

Option D: Oversaturated is defined as the to saturate the solution excessively or to provide with more amount of substance for saturation.

Hence, the correct answer is Option D.

The answer is D. oversaturated. The term to represent the solution contains more solid solute than saturated solution is supersaturated, not oversaturated.

2. The energy of a photon that has a wavelength of 12.3 nm is _______ J.A) 2.72 x 10^-50
B) 1.62 x 10^-17
C) 4.42 x 10^-23
D) 1.99 x 10^-25
E) 1.51 x 10^-17

Answers

I think it is e sorry if I’m wrong

What is the equivalent of 0 Kelvin on the Celsius scale?

Answers

Kelvin = celsius + 273 so...
0 = C +273
-273 = C
some people use 273 or 273.15 just depends on the teacher.

Final answer:

0 Kelvin, also known as absolute zero, is equivalent to -273.15 degrees on the Celsius scale. Both scales are linearly related with the Kelvin scale starting at the lowest possible theoretical temperature.

Explanation:

The equivalent of 0 Kelvin on the Celsius scale is -273.15 °C. The Kelvin scale is an absolute temperature scale used commonly in science. This scale is based on absolute zero, which is theoretically the lowest possible temperature and is assigned the value of 0 Kelvin. This is the point at which there is no molecular motion and, therefore, no thermal energy. The Kelvin and Celsius scales are linearly related; one-degree change in temperature is the same on both scales. On the Celsius scale, which is defined with the freezing point of water at 0 degrees and the boiling point at 100 degrees, absolute zero or 0 Kelvin falls at -273.15 degrees Celsius.

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A drop of vinegar ( a weak acid ) is placed on a sample of each of the materials below. Which will show the most active reaction? A. glass
B. marble
C. copper
D. steel

Answers

Answer: Option (B) is the correct answer.

Explanation:

Marble is also known as calcium carbonate and its chemical formula is $CaCO_(3)$ .

When it combines with vinegar then it results in the formation of calcium acetate which is a water soluble compound along with the release of carbon dioxide which occurs in the form of bubbles and water.

The reaction is as follows.

$CaCO_(3) + CH_(3)COOH \rightarrow Ca(CH_(3)COOH)_(2) + H_(2)O + CO_(2)$

Whereas vinegar being a weak acid will not react with glass, copper and steel.

Answer: B

Explanation: I got it right on my test

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Other Questions

A sample of aluminum metal absorbs 8.32 J of heat, upon which the temperature of the sample increases from 23.2 degrees C to 30.5 degrees C. Since the specific heat capacity of aluminum is 0.90 J/g-K, the mass of the sample is what in grams?

What does the value, or magnitude, of the equilibrium constant (K) tell you about an equilibrium system? Be specific with your answer.

A sample of an unknown substance has a mass of 89.5 g. If 345.2 J of heat are required to heat the substance from 285 K to 305 K, what is the specific heat of the substance?

The ratio of H2 gas to O2 gas will always remain 2:1, and the ratio of H2 gas to H2O gas will remain 1:1 so if the gas volumes are measured at the same temperature and pressure: 44.8 liters of H2 + _____ liters of O2 → ____ liters of H2O