Chemistry, 11.07.2019 14:00 stricklandashley43

Me with this first one to answer gets

Answers: 1

Show answers

Answers

Answer from: brainbean

Question 1: Which of the following is true?

Figure II and Figure IV are both compounds.

Explanation:

Compound is a substance which is formed by chemical reaction of different elements.

Example:

Water = H₂O = Which is made up of hydrogen and oxygen atoms.

Carbon Dioxide = CO₂ = Which is made up of carbon and oxygen atoms.

In given figures, Figure I and Figure III are not compounds because Figure I is containing a substance which is made up of same atoms like N₂, O₂, Cl₂ and Figure III is containing a substance which is made up of single monoatomic element like Ne, Kr, Xe gases.

Question 2: Which of the following statement is true?

The Figure is the Molecule and a Compound

Explanation:

Molecules are formed when two or more, either same or different atoms join chemically. While, compound is any substance which formed when two different atoms join together chemically.

In given figure, it can be seen that the particles are made up of two atoms. Hence, it is said to be a molecule. Also, the atoms which are forming the molecule are different in color means, they are different atoms therefore, it is also called as compound.

Question 3: Which of the following list includes only molecules?

Third List only include Molecules

Explanation:

Molecules are formed by the combination of two or more same or different atoms. In given options;

List 1 is containing a substance ( Mg ) which is existing in monoatomic form. It means we can exclude the first list.

List 2 is containing a substance ( Fe ) which is existing in monoatomic form. It means this list can also be excluded.

List 3 is containing all substances in molecular forms. Like NaCl made up of Na and Cl, N₂ made up of two nitrogen atoms and H₂O (water) made up of two hydrogen and one oxygen atoms.

List 4 is containing a substance ( He ) which is existing in monoatomic form. It means this list can also be excluded.

Answer from: Quest

500bc indiais the answer.

Answer from: Quest

your answer is c) plasma

~*"auba14"*~

Another question on Chemistry

Chemistry, 22.06.2019 03:40

Astudent is given a sample of a blue copper sulfate hydrate. he weighs the sample in a dry covered porcelain crucible and got a mass of 23.875 g for the crucible, lid, and sample. the mass of the empty crucible and lid was found earlier to be 22.652 g. he then heats the crucible to expel the water of hydration, keeping the crucible at red heat for 10 minutes with the lid slightly ajar. on colling, he finds the mass of crucible, lid, and contents to be 23.403 g. the sample was changed in the process to very light clue anhydrous cuso4. if there are again 100.0 g of hydrate, how many grams of cuso4 are in it? how many moles of cuso4? (hint: molar mass of cuso4 = 159.6 g / mole. what per cent of the hydrate is cuso4? you may convert the mass of cuso4 to moles.)

Answers: 3

Answer

Chemistry, 22.06.2019 14:00

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

Answers: 2

Answer

Chemistry, 22.06.2019 17:40

Which statement about hf is true? it is zero for any compound in its standard state. it is positive when the bonds of the product store more energy than those of the reactants. it is negative when a compound forms from elements in their standard states. it is zero for any element that is in the liquid state.

Answers: 1

Answer

Chemistry, 22.06.2019 23:10

Amines are good nucleophiles, even though they are neutral molecules. how would the rate of an sn2 reaction between an amine and an alkyl halide be affected if the polarity of the solvent is increased? amines are good nucleophiles, even though they are neutral molecules. how would the rate of an reaction between an amine and an alkyl halide be affected if the polarity of the solvent is increased? because both reactants in the rate-limiting step are neutral, the reaction will be faster if the polarity of the solvent is increased. because both reactants in the rate-limiting step are neutral, the reaction will be slower if the polarity of the solvent is increased. because both reactants in the rate-limiting step are neutral, the reaction will occur at the same rate if the polarity of the solvent is increased. request answer

Answers: 3

Answer

You know the right answer?

Me with this first one to answer gets...

Questions