15. Which reaction produces a coloured substance?
A. The addition of sodium metal to water.
B. The addition of sulfur dioxide gas to water.
C. Burning sodium metal in chlorine gas.
D. The addition of chlorine gas to a solution of potassium iodide.

Answers

Answer 1

Answer:

the addition of chlorine gas to a solution of potassium iodide.

Answer 2

The reaction that produces a colored substance is the addition of chlorine gas to a solution of potassium iodide. The correct option is D.

What is a chemical reaction?

In a chemical reaction, reactants undergo a chemical reaction and transform into products through a chemical process. For instance, when humans breathe in oxygen, it combines with glucose to create carbon dioxide, water, and energy.

Another sign that a chemical reaction has taken place is a change in color. If two solutions are combined and a color change occurs that is not just the effect of diluting one of the reactant solutions, a reaction has taken place. A solid and a liquid combined may also result in a change in color.

Therefore, the correct option is D. The addition of chlorine gas to a solution of potassium iodide.

To learn more about chemical reactions, refer to the link:

https://brainly.com/question/22817140

#SPJ2


Related Questions

001 10.0 points
If you mix 4.5 g of HCl in enough water to
make 0.9 L (900 mL) of solution, what is the
molarity of the solution?
Answer in units of M.

Answers

M=moles of solute/liters solvent

4.5g HCl/36.45 g/mol HCl=0.12 moles

0.12/0.9= 0.14 M

What is freshly pumped oil called?

Answers

Answer:

When the drill hits oil, some of the oil rises from the ground high into the air. This immediate release of oil is known as a "gusher." Once a reservoir has been located, pumps are used to extract the oil.

What is freshly pumped oil called?

petroleum

Explanation:

Which statement correctly describes the relationship between molecular structure, the strength of electrostatic forces between
molecules, and the boiling point of a substance? (1 point)
The boiling point of a substance affects the strength of electrostatic forces, which can affect the molecular
structure
The boiling point of a substance affects its molecular structure, which can affect the the strength of
electrostatic forces.
Molecular structure affects the strength of electrostatic forces, which can affect the boiling point of a
substance
Stronger electrostatic forces cause a stronger molecular structure and lower boiling points

Answers

Molecular structure affects the strength of electrostatic forces, which can affect the boiling point of a substance is the statement that correctly describes the relationship between these terms.

The molecular structure is the way in which the atoms that are in a molecule are arranged in space, this is defined by a series of forces that hold the atoms together in a specific arrangement.

The boiling point is the temperature at which the vapor pressure of the liquid equals the pressure that surrounds the liquid, when this happens, the liquid transforms into gas.

For a compound to vaporize, the forces that hold the molecules together must be broken, this means that the boiling point of a compound depends on the attraction between the molecules, that is, on the forces that determine the molecular structure.

If the molecules are held together by strong electrostatic forces, it will take a lot of energy to push the molecules away from each other and the compound will have a very high boiling point.

Therefore, we can conclude that the boiling point depends on the molecular mass of the substance and the type of electrostatic forces present, that is, the bonds that the atoms establish with each other to form the molecule (molecular structure).

Learn more about molecular structure here: https://brainly.com/question/25799404

giving brainly if correct and explained​

Answers

Answer:

D.

Explanation:

A concentrated solution is one that has a lot of solute (the substance being dissolved) in the solvent (the substance doing the dissolving). When a solution is concentrated, it means it has a high ratio of solute to solvent, so the answer is D.

Hope this helps.

explain the concept of thekinetic molecular theory

Answers

Answer:

Kinetic Molecular Theory states that gas particles are in constant motion and exhibit perfectly elastic collisions. Kinetic Molecular Theory can be used to explain both Charles' and Boyle's Laws. The average kinetic energy of a collection of gas particles is directly proportional to absolute temperature only.

Explanation:

hope this helps! goodluck & enjoy the rest of ur day or night.

The diagram shows Earth's position in its orbit around the Sun at the beginning of each season

Which position of Earth shows the Moon located where its shadow may sometimes reach Earth?

Answers

The position where the moon is located where its shadow may sometimes reach Earth is position A .

What is an eclipse?

We know that in the outer space there are a lot of celestial bodies that can be found. Now we know that a celestial body is one that can be found in the outer space and the moon and the sun are all parts of the celestial bodies that we can find in the solar system.

In this case we  are being asked for the position of the moon that could lead to an eclipse where the moon would come between the earth and the sun and that is the position A.

Learn more about eclipse:https://brainly.com/question/4279342

#SPJ1

Is sweat a chemical? I am curious to know! NO LINKS OR TROLLS

Answers

Answer:

no

Explanation:

stop troll hate

[EARTH SCIENCE]

Hi, can anyone help please? Thank uuuu!!! :D

The relationship between the average distance of a planet from the sun and the planet’s orbital period is described by the....

A. Law of ellipses.
B. Law of equal areas.
C. Law of motion.
D. Law of periods.

Answers

Answer:

c. law of motion

Explanation:

I think I hope it helps

What part of the periodic table does the neutrons tell us about the element?

Answers

Answer:

The neutrons tell us if it is an isotope or not, they also hold the atom together.

Explanation:

Match each term in the first column with an example in the second column. On a sheet of paper, write the letter of the answer.

1. physical property

2. chemical property

A ability to burn

3. solid

4. liquid

B rust appears on a nail C a puddle freezes

5. physical change

6. chemical change

D substance that has a definite shape and volume

E temperature or density

F substance that has a definite volume, but no definite shape

Answers

Answer:

wait can you go more in detail i can help you because i dont understand whats going on

BRAINLIEST TO BEST ANSWER AND 40 POINTS GRAB QUICK

Why are sodium (Na) and potassium (K) in the same group on the periodic table?

Answers

Answer:

They both have 1 valence electron

Explanation:

how molecular structure affects solubility?

Answers

Answer:

The molecular structure affects solubility mainly biased on its polarity or bonded ions.

Explanation:

Polar molecules will better interact with the water molecules and will dissolve easier. Nonpolar molecules can dissolve if they are small enough, however they don't interact well with the polar molecules. Bonded ions, such as NaCl split into a cation Na and an anion Cl which the positive charge on the Na will be attracted to the oxygen, and the negatively charged Cl will be attracted to the positive Hydrogen.

**Remember this rule, like dissolves like, meaning nonpolar dissolves nonpolar and polar dissolves polar.

I hope this helps!

a.
Which of the following statements about empirical formulas is incorrect?
An empirical formula represents a molecule.
b. An empirical formula gives the smallest whole number ratio of each type of atom
in a molecule.
c. An empirical formula must be multiplied by an integer to obtain the molecular
formula.
d. The molecular formula can be the same as the empirical formula in some-
situations.
e.
All statements are correct.

Answers

Answer:

A

Explanation:

The empirical formula won't always represent a molecule if the molecular formula is not the smallest ratio between elements.

Which one is the answer?

Answers

Answer:

I think 1, 4, and 5 are the answers to this question. I am not sure about 4 though.

Explanation:

You have to have a power source (1), you also have to have a way to get that power somewhere else (5), and the reason for 4 would be that the power has to come back through the power source to remain working.

copper cannot be used as an anode in electrolysis of water​

Answers

Answer:

I hope this will help

Explanation:

Copper is purified by electrolysis . Electricity is passed through solutions containing copper compounds, such as copper(II) sulfate. The anode (positive electrode ) is made from impure copper and the cathode (negative electrode) is made from pure copper.

what makes matter change from one state to another?

Answers

Answer: Adding or removing energy from matter

Explanation:

the ability to conduct electricity is a characteristic of metallic bonding. this characteristic is best explained by the presence of ________________.

Answers

Electric current but I’m not sure

How many grams of potassium sulphate are formed when 49g of sulphuric acid in solution are neutralised by potassium hydroxide?

Answers

C - keep counting to the atoms

Will Mark Branliest!

How many grams are in 4.1 mole sample of CO?

Answers

4.1 Moles of Cobalt = 241.62612 Grams

What type of mixture is throughly mixing powdered lemonade with water

Answers

Answer:

I believe it would be a solution I could be wrong tho

Explanation:

Answer:

a solution

Homogeneous mixtures (solutions)

Explanation:

Lemonade is a special type of mixture called a solution.

...................................................................................................................................................

What type of mixture is made by thoroughly mixing powdered lemonade with water?

Homogeneous mixtures (solutions)

Mixtures with substances dissolved evenly into one another, like pink lemonade powder dissolved in water, are called homogeneous mixtures, or solutions.

which of the following molecular compounds does NOT need the usage of prefix for the first element
SO2
S2O3
N2S
N2S3

Answers

Answer:

SO2

Explanation:

that's my answer

Sana mKatolong

Write the chemical formulas and names for the following ionic compounds. Strontium and hydroxide

Answers

Answer:

Sr(OH)2

Explanation:

Strontium hydroxide, Sr(OH)2, is a caustic alkali composed of one strontium ion and two hydroxide ions. ... Sr(OH)2 exists in anhydrous, monohydrate, or octahydrate form.

Microscopes are used to see tiny organisms. The specimen is thin kept on the grid in this microscope, and can be magnified more than a million times and can be viewed in the monitor. Name the Microscope

Answers

Answer:

The electron microscope is the answer.

What happens to the atoms in food once animals eat them?

they are destroyed
they are used to make the animal grow
they are released as waste

Answers

Answer:

i think

they are used to male the animal grow

Once the animal eats the food, the atoms in food are  used to make the animal grow.

What is an atom?

An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.

The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.

Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.

Learn more about atom,here:

https://brainly.com/question/13654549

#SPJ2


Does this aid in joining the two molecules?

Answers

Answer:

yes it does aid in joining the two molecules

Explanation:

What state is represented by the sign (s)
liquid
gas
solid
dissolved in water

Answers

solid.

liquid is (l)

gas is (g)

dissolved in water is (aq)

Help me:) please and thanks! Part 3

Answers

Answer:

then this picture 11 Venkat and one person is

Explanation:

join date 20th December is not a problem with the topic of your name and address of the topic of your name and address of the topic of your name and address of the topic of your life in general is not available in the equation is the topic of your name and address

so nothing in this picture .

Do solar panels use electrical energy or produce electrical?

Answers

Answer:

How Does a Solar Panel Generate Power? Solar panels use the photons produced by sunlight to generate direct current (DC) electricity. When the photons hit the panel they are absorbed by the panel's semiconducting silicon material.

Explanation:

Answer:

Solar panels produce electrical energy by absorbing the solar energy from the sun and converting it into electrical energy.

Explanation:

At the end of seafloor spreading, where does the molten rock solidify?

Answers

Answer:

As the two plates move apart from each other, which often occurs at a rate of several centimetres per year, molten rock wells up from the underlying mantle into the gap between the diverging plates and solidifies into new oceanic crust. Spreading centres are found at the crests of oceanic ridges.

Explanation:

I found this answer by taking notes in class

Answer:

0k HI! so the answer is A

Explanation:

hope is helpful

Which statement correctly defines dynamic equilibrium?
At dynamic equilibrium, the rates of forward and reverse reactions are equal.
At dynamic equilibrium, the rate of the forward reaction is higher than the rate of the reverse reaction.
At dynamic equilibrium, the forward and reverse reactions stop.
At dynamic equilibrium, the concentrations of reactants and products are equal.

Answers

Answer: at dynamic equilibrium, the rates of forward and reverse reactions are equal.

Explanation:

The correct statement defines dynamic equilibrium "at dynamic equilibrium, the rates of forward and reverse reactions are equal."

What is dynamic equilibrium?

The state of a particular system wherein the reversible reaction takes place ceases modifying the ratio of reactants as well as products, but there is still a transfer of substances among the reactants and products is known as dynamic equilibrium.

What is reactions?

Chemical reaction can be defined as the a method for creating novel chemicals with unique features.

The correct statement defines dynamic equilibrium "at dynamic equilibrium, the rates of forward and reverse reactions are equal."

Therefore, the correct answer will be option (a).

To know more about reaction and dynamic equilibrium

https://brainly.com/question/2363073

#SPJ2

Other Questions
In the standard (x, y) coordinate plane, what is thedistance between the origin and the point (,5 12) 2. Complete the sentences and questions with the past simple form of the verbs in brackets. Use the affirmative, negative or interrogative forms.1 _______ (you / write) an email to James last night?2 I _______ (buy) the English-English dictionary because it was very expensive.3 _______ (Stuart / see) Karen yesterday evening? She wanted to speak to him.4 We _______ (go) to the cinema last Friday, but the film was terrible!5 Mum _______ (cook) dinner last night. We went to a restaurant instead.6 I dont want lunch today because I _______ (have) a big breakfast this morning.7 _______ (you / go) to the film club last Wednesday?3. Complete the dialogue using the words in brackets.Mel Ali? Are you there?Ali Just a minute! 1________________ (I / listen) to some loud music I'll turn it down. That's better. How are you?Mel Fine thanks! What's new?Ali Nothing much. 2________________ (I / wait) for Hannah to come round at the moment.Mel 3__________________ (I / not understand)! You 4________________ (not / like) Hannah!Ali Yes, I know! But 5________________ (she / help) me with maths and physics this weekend, because 6________________ (I / need) to pass these exams on Monday.Mel So 7________________ (you / study) all weekend? Ali Yes there's a lot to remember! Helpppp me please omg The store ordered an equal amount of flour and rice. Flour is packed in 60 kg and rice in 50 kg. How many kilograms of flour and rice will you order if the store warehouse has a maximum of 22 bags? What is the perimeter?8 m4 m4 m12 mmetersSubmit Which of the following will you do in step X in the following series of clicks to change the bounds ofa chart axis: Chart > Chart Tools > Format tab > Current Selection> Format Selection > Format Axis> Axis Options > Vertical Axis crosses > At Category number > X?O Expand Labels, then under Interval between labels, select Specify interval unit and type thenumber you want in the text box.O Expand Tick Marks, and then in the Interval between tick marks box, and type the number thatyou wantNType the number that you want in the text box.O Expand Tick Marks, and then select the options that you want in the Major type and Minor typeboxes. Heitor was exposed to a bomb blast and has a focal brain injury to the human analog of area mt. When presented with visual stimuli heitor would not show:. Choose the best transitions to complete the passage. Football is an important part of the high school experience in many towns around the nation. Studies show, , that helmets do not provide enough protection for the brain. , some players can end up with brain damage. A blow to the head causes a concussion, which means that the brain hits the skull. , schools should consider whether the game is worth the risk. Scientist put a sample of water into a sealed tank. water can be a solid, liquid, or a gas. At first the water was a liquid . Then, the scientists transferred energy out of the substance, and was we changed phase. What after the phase change, the water molecules movedANSWERSA. Faster and started moving away from each otherB. Faster and started moving around each other C. Slower and started moving in place D. Slower and started moving around each other Please help again forgot everything Again A grocery store buys cereal using the cost function c(n) = { 2n when n < 100 1. 9n when 100 n 500 1. 8n when n > 500 where n is the number of boxes of cereal the grocery store buys and c(n) is the cost of the cereal. The grocery store then sells the cereal using the sales function s(c) = 1. 3c. What is the grocery store's sales from selling cereal if the grocery store buys 100 boxes and sells all of them?. What is the problem the protagonist faces? Condensed milk *9. Match each vocabulary word with its corresponding synonym:25 pointsfabricationvigilantesurveillanceinterrogationuncensoredwatchmanobservationrawfalsehoodquestioning Based on the diagram, which equation can be simplified to derive the cosine sum identity?. a number decreased by 23% equals 123 solve the system of equations y =2x -9 y = x - 4 What has the smallest effect on the rate of photosynthesis. A Herbig-Haro (HH) object is:_:_________.a. a small galaxy just outside the outer edge of the Milky Wayb. where a jet from a star in the process of being born collides with (and lights up) a nearby cloud of interstellar matterc. a part of a giant molecular cloud where molecules containing two hydrogen atoms formd. a star that has too little mass to start fusion in its coree. cluster of very low-mass stars, observable only with infrared radiation HELPPP FAST LIKE 4 minutes left Algebra help........................