Which formula represents a molecular compound?
(1) Kr (3) N2O4
(2) LiOH (4) NaI

Answers

Answer 1

Answer: N2O4 is the only option from the list that represents a molecular compound, since compounds must contain at least two different atoms, although these can be from different groups.

Answer 2

Answer:

Answer: Option (3) is the correct answer.

Explanation:

A molecular compound is a compound in which atoms used to share electrons and thus results in the formation of covalent bonds.

For example, $N_(2)O_(4)$ is a covalent compound and hence, it is a molecular compound.

Whereas LiOH and NaI are ionic compounds as their atoms has transferred electrons.

Therefore, we can conclude that out of the given options, $N_(2)O_(4)$ is the formula which represents a molecular compound.

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All of the following can increase free radical production, EXCEPT: A)Smoking B)Tanning booths and radiation. C)All of these options increase free radical production. D)Consuming pesticides and chemical additives. E)Lead and other heavy metals exposure.
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What is the shape of a water molecule?a. bent b. linear c. pyramidal d. tetrahedral
Nuclear fusion in the sun involves hydrogen (H) atoms combining to form helium (He). A student claims that since the atmosphere contains hydrogen, any fusion reaction on Earth would result in an uncontrolled chain reaction. What is wrong with the student's reasoning?The hydrogen in air is not densely packed enough for an uncontrolled chain reaction. Uncontrolled chain reactions can only happen during nuclear fission. It is impossible to cause a fusion reaction to happen anywhere outside of the sun. We are safe because there is no radioactive hydrogen in the air.

Is polythene a conductor or an insulator (eletricity)

Answers

Polythene is not a conductor it is insulator

The answer is polythene is a insulator

The _______ receives digested food components and stores the glucose to be released into the blood stream for future use.A. liver
B. stomach
C. small intestine
D. large intestine

Answers

Answer:

The correct answer is A).Liver

Explanation: The liver receives digested food components and stores the glucose to be released into the bloodstream for future use, NOT the small intestine or large intestine

I AM 100% CONFIDENT WITH THIS ANSWER TRUST ME!!!

I know it is NOT small intestine, so Large Intestine.

Pick the answer that most likely represents the substances’ relative solubilities in water.(A) CH₃CH₂CH₂CH₃ < CH₃CH₂CH₂OH < HOCH₂CH₂OH
(B) CH₃CH₂CH₂OH < CH₃CH₂CH₂CH₃ < HOCH₂CH₂OH
(C) CH₃CH₂CH₂CH₃ < HOCH₂CH₂OH < CH₃CH₂CH₂OH
(D) HOCH₂CH₂OH < CH₃CH₂CH₂OH < CH₃CH₂CH₂CH₃
(E) HOCH₂CH₂OH < CH₃CH₂CH₂OH < CH₃CH₂CH₂CH₃

Answers

the naswer should be A

Answer:

Explanation:

eighty-three

Predict whether a reaction will occur when HClO and Sr(OH)2 solutions are mixed, if yes determine spectator ions in the ionic equation.

Answers

Answer:

$ClO^-\n\nSr^(2+)$

Explanation:

Hello there!

In this case, according to the reaction between hypochlorous acid and strontium hydroxide which yields stontium hypochlorite and water as a neutralization reaction:

$2HClO(aq)+Sr(OH)_2(aq)\rightarrow Sr(ClO)_2(aq)+2H_2O(l)$

Thus, since HClO is a weak acid, it is not fully ionized so the complete ionic equation turns out to be:

$2H^++2ClO^-+Sr^(2+)+2(OH)^-\rightarrow Sr^(2+)+2(ClO)^-+2H_2O(l)$

Whereas the spectator ions, which remain the same at both sides of the equation, are:

$ClO^-\n\nSr^(2+)$

Best regards!

Final answer:

A reaction occurs when HClO and Sr(OH)2 are mixed forming Sr(ClO)2 and H2O. In this reaction there are no spectator ions as all ions participate in the reaction forming new compounds.

Explanation:

When HClO (hypochlorous acid) and Sr(OH)2 (strontium hydroxide) solutions are mixed, a reaction takes place, resulting in the formation of Sr(ClO)2 and H2O. In this reaction, Sr2+ and OH- from Sr(OH)2 and H+ and ClO- from HClO are the ions that participate, therefore there are no spectator ions in the reaction. In the net ionic equation, spectator ions are the ions that remain the same in their ionic form on the both sides of the equation (reactant side and product side), thus, in this case, there are none. It's important to understand the concept of

solubility guidelines

and their use in determining reaction outcomes and recognizing

spectator ions

Learn more about Chemistry of Reaction here:

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Which of the following combinations will result in a reaction that is spontaneous at all temperatures?positive enthalpy change and positive entropy change
positive enthalpy change and negative entropy change
negative enthalpy change and positive entropy change
negative enthalpy change and negative entropy change

Answers

The right answer for the question that is being asked and shown above is that: "negative enthalpy change and negative entropy change." The combination that will result in a reaction that is spontaneous at all temperatures is negative enthalpy change and negative entropy change

Answer:

Spontaneous at ALL Temperatures: Negative enthalpy change and positive entropy change

I promise this is 100% correct. I just took the Honors Entropy quiz and I got the question correct.

The other answer provided by the verified user Hagrid is incorrect.

Which substance will combine with oxygen gas to produce a greenhouse gas? a. Na
b. S
c. H₂
d. Ne
e. C

Answers

The substance that combined with the oxygen to form a greenhouse gas has been carbon (C). Thus, option E is correct.

The greenhouse gases have been responsible for the entrapment of the sun's energy in the atmosphere, leading to the increase in the temperature of earth and making earth an appropriate place to live.

The greenhouse gases have been the carbon dioxide, methane, sulfur etc. that are able to entrap the energy.

The reaction of carbon with oxygen has been resulted in the formation of carbon dioxide. It has been a green house gas.

Thus, the substance that combined with the oxygen to form a greenhouse gas has been carbon (C). Thus, option E is correct.

For more information about greenhouse gas, refer to the link:

brainly.com/question/4509458

Carbon (C) will react with oxygen (O2) to produce CO2 (carbon dioxide) which is a greenhouse gas

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