CHEMISTRY HIGH SCHOOL

Which of the following is NOT an example of a fossil fuel?a. coal
b. natural gas
c. petroleum
d. methanol

Answers

Answer 1
Answer: Methanol is not an example of a fossil fuel.

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Which reaction occurs spontaneously?(1) Cl2(g) + 2NaBr(aq)-->Br2(l) + 2NaCl(aq) (2) Cl2(g) + 2NaF(aq)--> F2(g) + 2NaCl(aq) (3) I2(s) + 2NaBr(aq)--> Br2(l) + 2NaI(aq) (4) I2(s) + 2NaF(aq)--> F2(g) + 2NaI(aq)
which element is the most electronegative out of the following K Mn Br WILL MARK BRAINLIEST!
Which chemical equation is correctly balanced?(1) H2(g) + O2(g)=> H2O(g)(2) N2(g) + H2(g) =>NH3(g)(3) 2NaCl(s)=>Na(s) + Cl2(g)(4) 2KCl(s) => 2K(s) + Cl2(g)
This formula equation is unbalanced.P4(s) + Cl2(g)  PCl3(l) Which coefficient should be placed in front of PCl3 to balance this equation?1246

Calculate the concentration (in molarity) of NaOH solution if 25.0mL of the solution are needed to neutralize 17.4 mL of a 0.132M HCL solution

Answers

Given:

25.0mL NaOH
17.4 mL of a 0.132M HCL

Required:

molarity of NaOH


Solution:

M1V1 = M2V2

(25.0mL) M1 = (0.132 M HCl)( 17.4 mL)

M1 = 0.092 M NaOH

V1 = 0.5 liters

Which traits explain the differences between halogens and alkali metals? Select all that apply Question 5 options: Halogens are better oxidizing agents than their alkali metal counterparts within the same period. Halogens have a larger van der Waal's radii than their alkali metal counterparts within the same period. Halogens have a higher effective nuclear charge than their alkali metal counterparts within the same period. Halogens have a higher first ionization energy than their alkali metal counterparts within the same period. Halogens have a higher electron affinity than their alkali metal counterparts within the same period.

Answers

Answer:

Halogens are better oxidizing agents than their alkali metal counterparts within the same period

Halogens have a higher first ionization energy than their alkali metal counterparts within the same period.

Halogens have a higher electron affinity than their alkali metal counterparts within the same period.

Halogens have a higher effective nuclear charge than their alkali metal counterparts within the same period

Explanation:

Effective nuclear charge increases across a period and accounts for increase in ionization energy across a period. This explains why halogens in the same period with alkali metals have higher effective bucket charge as well as ionization energy than the alkali metals.

Similarly, electron affinity increased across a period, halogens have greater ekctron affinity than corresponding alkali metals in the same period.

Find the mass of 3.00 mol of acetic acid, C2H4O2

Answers

Molar mass acetic acid:

C₂H₄O₂ = 12 * 2 + 1 * 4 + 16 * 2 = 60.

n = mass / molar mass

3.00 = m / 60.0

m = 3.00 * 60.0

m = 180 g of C₂H₄O₂

hope this helps!

In each reaction box, place the best reagent and conditions from the list below.

Answers

This is a two step step reaction as shown below,

Step 1:
           Epoxidation of Alkene:
                                              In first step Cyclohexene is treated with peroxybenzoic acid in the presence of Dichloromethane which results in the formation of epoxide moiety.

Step 2:
           Nucleophillic Substitution Reaction:
                                                                  In second step the epoxide formed is treated with Sodium Methoxide which acts as a nucleophile and attacks the less hindered carbon of epoxide resulting in the formation of final product as shown below.

Final answer:

The best reagent and condition for a chemical reaction is dictated by the reactants at hand and the substance that you're trying to produce. For instance, to convert an alkene into an alcohol, Osmium Tetroxide (OsO4) at room temperature would be an example of an ideal reagent and condition.

Explanation:

In chemistry, when you are asked to place the best reagent and conditions in a reaction box, you are trying to predict the proper chemical, heat, or pressure conditions that will foster a certain chemical reaction. This requires understanding of substances' chemical properties, behavior under different conditions, and reaction mechanisms. For instance, if we want to oxidize an alkene into an alcohol, we would choose a reagent like Osmium Tetroxide (OsO4). In this case, OsO4 would be our 'best reagent', and room temperature may serve as the ideal condition as it generally facilitates this process. Each reagent and condition depend on the reactants you start with and the product you want at the end.

Learn more about Chemical Reactions here:

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Which of the following is another term for glucose? 1) Dextrose, 2) Sucrose, 3) Carbohydrate, 4) Table 5) Sugar.

Answers

Another term for glucose is "sugar." Glucose is a type of sugar that circulates in the bloodstream and serves as a primary source of energy for cells in the body.

Which of the following elements has the ability to undergo sublimation?a. oxygen
b. carbon
c. sodium
d. iodine

Answers

The best answer to this question would be (d.) iodine. Iodine is the elements who has the ability to undergo sublimation. Iodine is an important compound in terms of nutrition, production of acetic acid and polymers. Iodine is capable of transitioning from solid to gas without any specialized process. 

The answer to your question is

d. idoine
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