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

a volume of .5650 will exert

Answers

Answer: A volume of .5650 what? And what unit will be considered?

A student dissolves ethanol (C2H5OH) in distilled water. In another container, he dissolves CaCl2, in distilled water. Will either of the solutions conduct electricity? If so which one?

Plz Help!

Answers

Answer: The CaCl2 solution will conduct electricity.

Answer:

i think that the  CaCl2 solution will conduct electricity

Explanation:

im not sure but if im wrong im sorry

wsphorus-SL 3. In the isotope B-11, what does the 11 represent?​

Answers

Answer:

Here boron-11 means the name of the element is boron and the mass number is 11

Explanation:

Part 1: Name the type of chemical reaction that occurs when magnesium chloride
solution (MgCl2) reacts with sodium carbonate solution (Na2CO3).
Part 2: Explain why aluminum (AI) would react with copper chloride (CuCl2) but not with
magnesium chloride (MgCl2).

Answers

Mg is ahead of Al in the electrochemical series and more reactive than Al hence Al does not react with MgCl2.

A chemical reaction is said to have occurred when new substances are formed. The reaction between magnesium chloride  solution and sodium carbonate solution is a double decomposition reaction since the cations exchange anion partners in the product;

MgCl2(aq) + Na2CO3(aq) ------> MgCO3(s) + 2NaCl(aq)

We must note that a single replacement reaction depends on the relative positions of metals in the electrochemical series. Al can react with CuCl2 because Al is more reactive than copper and ahead of Cu in the electrochemical series. On the other hand, Mg is ahead of Al in the electrochemical series and more reactive than Al hence Al does not react with MgCl2.

Lear more about electrochemical series: https://brainly.com/question/25749323

In the modern periodic table elements are arranged in order based on the number of:

Answers

Explanation: The elements in the modern periodic table are arranged in order of their atomic numbers, which is the number of protons in the nuclei of the atoms of an element. Each element has a unique atomic number.

Mr. Jenson's class is observing the growth of one kind of pea plant.


The class wants to design an experiment to answer the question, "What amount of water will cause the plants to produce the greatest number of peas?"

What could the class do to create the experiment?
A.
give all the pea plants the same amount of water and count the number of peas that the plants produce
B.
give all the pea plants different amounts of water and only guess the number of peas that the plants produce
C.
give all of the pea plants different amounts of water and count the number of peas that the plants produce
D.
stop watering all of the pea plants and then count the number of peas that the plants produce

Answers

Answer:

The answer would be C. Giving the pea plants a different amount of water in each one can help you observe how much water produces the most peas in a pea pod.

The answer is C to give all of the pea plants different amounts of water and count the number of peas that the plants produce

Explanation:

Answer:

C. give all of the pea plants different amounts of water and count the number of peas that the plants produce

Explanation:

The class wants to design an experiment that answers the question, "What amount of water will cause the plants to produce the greatest number of peas?"

To answer the question, the experiment should show how many peas the plants produce when they are given different amounts of water. The best way to do this would be to give all of the plants different amounts of water and count the number of peas that the plants produce.

Which liquid has more density

Answers

Answer:

mercury i think

Explanation:

Answer:

Mercury is the densest liquid at standard conditions for temperature and pressure (STP). Also called quicksilver, mercury has been known for more than 3,500 years. It is an important metal in industry, but it is also toxic

Explanation:

Reactions cannot occur without a certain minimum amount of energy. What is this minimum amount of energy called?
the activation energy
the activated complex
the kinetic energy of reactants
the potential energy of products

Answers

Hello!!
It should be
“the activation energy”

Help! It’s due in 1 minute

Answers

The answer is the last option, Zn + S ➡️ ZnS.

what are some negative impacts on the environment and society when the water cycle is disrupted and drought occurs ?

Answers

Some of the negative impact of disruption in water cycle are adverse environment, with affected farming, hydroelectricity, and deforestation.

The water cycle has been operated in the environment for the conversion of water in the different states. The water cycle has been operated with the conversion of water from the water body to the clouds by evaporation.

The evaporated water has resulted in clouds, that have been condensed and precipitated in the form of rain. The water cycle helps in maintaining the water balance in the ecosystem. It made the water available for use as well.

The drought has been the condition of the scarcity of water. In this condition, there has been a disruption of the water cycle. Some of the negative impacts resulting from the disruption of the water cycle are:

Adverse environmental conditionsFarming affected by water scarcityUnavailability of hydroelectricityDeforestation

For more information about water cycle, refer to the link:

https://brainly.com/question/1151425

what sea animals have moveable spines that they use for protection

Answers

Answer:

sea urchins

Explanation:

Answer:

sea urchins

Explanation:

i took the test


The periodic table of the elements is a very useful organizational tool in science. What are some organizational tools you use in your daily life? How do they make your life easier​

Answers

Answer:

There are several different types of tools you could encounter, including project management software, note-taking programs, journals, and day planners. Organization management tools help in sorting out one’s daily responsibilities and being more efficient with time: calendars, to-do lists, mind maps, document storage clouds.

Explanation:

what i know:) hope it helps

What is photosynthesis?​

Answers

Explanation:

the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct.

Answer:

photosynthesis is the process of making food by green plants by using sunlight,carbon dioxide, water.

How does lemon juice stop an apple from turning brown?

Answers

Lemon juice prevents browning because it is full of ascorbic acid (Vitamin C) and it has a low pH level. The oxygen will react with the ascorbic acid before it reacts with polyphenol oxidase (the enzyme in the fruit).

How many aluminum atoms are in 4.18 g of aluminum?

Answers

Answer:

i believe its 91

Explanation:

Mr. Green gave his students a set of items.


They had a toothpick, pencil, paper clip, safety pin, nail, and dime. He also gave them a magnet. He told them to predict which items are magnetic.

How can they test their predictions?
A.
weigh each of the items
B.
see which items stick to the pencil
C.
measure each of the items
D.
see which items stick to the magnet

Answers

Answer:

D. see which items stick to the magnet

Explanation:

To predict which items are magnetic, the students will have to test whether or not each item is attracted to the magnet. Only objects that are magnetic stick to a magnet, so all of the items that stick to the magnet should be magnetic.

Hopefully that's helpful! :)

What is the melting point of water ?
what is the freezing point of water?​

Answers

Answer:

Freezing point: 32°F or 0°C

Boiling point: 212°F or 100°C

Nivel de energia maximo de 20Ca

Answers

Por favor provide más información

formulas and nomenclature binary ionic compounds worksheet

Answers

To name the binary ionic compounds it is necessary to observe which is the metal and the non-metal that compose them.

This name is made as follows:

The name of the metal is shown.The name of the non-metal is presented in abbreviated form.Add the suffix "ide" at the end.

An example of this can be seen in the binary ionic composite KCL that receives the name Potassium Chloride, since potassium is the metal and chlorine is the non-metal.

It is important to remember that binary ion compounds are electrically charged ionic molecules formed by a metal and not a non-metal.

You can find more information about ionic bonds at the link below:

https://brainly.com/question/24500453

How does the equation F= ma tell you that it is easier to push a small chair than a large couch
across the floor?

Answers

Explanation:

[tex] \boxed{ \mathsf{F = ma}}[/tex]

The Newton's Second law of motion, also known as The Law of mass and acceleration, derives the given equation in terms of mass, acceleration and force.

It actually states that Force applied on a body is equal to the time rate of change of it's momentum.

Momentum of a body, is the product of it's mass and velocity with which its moving.

This clarifies that objects at rest have zero momentum since they have zero velocity.

If a "source" applies force on an object, it's magnitude would depend on its rate of change of momentum with time.

Since, mass of an object is a fixed entity, so change in momentum would be caused due to change in velocity.

Now, if we happen to have two objects of different mass,

(As, in here, a chair and a large couch) and we have to push them so as to produce the same change in momentum, the force applied on a couch would be more than that applied on the chair.

Answer:

This is simply because,

Force = mass × acceleration

If acceleration for both the objects is fixed, the force applied differs due to theur difference in mass.

Note here that Force I'd directly proportional to mass.

The greater the mass is, the higher is the force required to produce same acceleration.

Thus, objects with higher mass will require a greater amount of force to have the same acceleration as the object of light weight.

What was the first person who invented a light bulb

Answers

Answer:

Thomas edison would be you're asnwer

Answer: The person who invented the light bulb was Thomas Edison

Explanation:

what mass does a nuetron have?​

Answers

Answer:

1 AMU

Explanation:

Protons, neutrons, and electrons: Both protons and neutrons have a mass of 1 amu and are found in the nucleus.

Which statement about states of matter is correct? (1 point)
O If you add enough heat to a gas, it will change into a liquid
If you cool a solid enough, it will change into a liquid
If you add enough heat to a solid it will change into a liquid.
o If you cool a liquid enough, it will change into a gas

Answers

Answer:

C

Explanation:

If you add enough heat to a solid it eventually becomes a liquid

How did the Heisenberg uncertainty principle contribute to the idea that electrons occupy “clouds," or "orbitals”?​

Answers

Answer:

Because the exact position of the electron is not known,it must be assumed that the electron takes up the entire space in an orbital.

Explanation:

what is the 3-dimensional orientation of a sublevel known as?

Answers

The 3-dimensional orientation of a sublevel is known as atomic orbital.

In quantum mechanics, Atomic orbitals are locations around an atom's nucleus where electrons are most likely to be at any particular time(specific orbits). These specific orbits exist in levels and can be broken down into sublevels.

Each sublevel has an orbital and it is oriented differently in 3-dimensional space.

The atomic orbital is a mathematical function that depicts how one or two electrons in an atom behave as seen in waves.

Learn more about atomic orbitals here:

https://brainly.com/question/1832385

A mechanical pencil is 14 cm long. What is its length in mm?

Answers

Answer:

140mm................

When magnesium (Mg) metal is burned in the presence of oxygen (O2), magnesium oxide (MgO) is produced. The properties of magnesium oxide are different than the individual properties of magnesium and oxygen because magnesium oxide is a compound and cannot be separated __________.

Answers

Answer:

a compound

Explanation:

Please help need to turn in

Answers

Answer:

2. d

3. i

4. e

5. j

6. g

7. a

8. f

9. b

Explanation:

do a few searches when you have time to deepen understanding!

5. j
6. g
4. e
9. b
2. d
7. a
10. h
1. c
3. f

Give one use of magnesium chloride

Answers

Answer:

Magnesium Chloride is used as a precursor magnesium metals.

Explanation:

Which statement describes why sodium reacts more vigorously than magnesium to hydrochloric acid? Refer to the periodic table. Circle the letter of the correct answer.

1) Sodium has a smaller atomic radius than magnesium.
2)Sodium has a lower ionization energy than magnesium.
3)Magnesium has a lower ionization energy than sodium.

Answers

Answer:

Its B all the others arent true and also dont make any sense

Explanation:

Sodium has a lower ionization energy than magnesium describes why sodium reacts vigorously than magnesium chloride.

Why is sodium more reactive than magnesium?Sodium is more reactive than magnesium because it has the ability to easily lose electron, hence have lower ionization energy.Sodium belong to group one on the periodic table and they are called akali metal while magnesium belong to group two on the periodic table and they are called alkali Earth metal.

Sodium and magnesium belong to the in the 3rd period. Iin the outermost energy level sodium has one electron but magnesium has 2 electrons. Therefore, there is more attraction abetween the nucleus and electrons in magnesium than that of sodium.

Therefore, sodium is more reactive than magnesium chloride because of lower ionization energy.

For more details on sodium reactivity, check the link below.

https://brainly.com/question/6837593

Other Questions
Emma runs 12 miles in 5 hours. How many miles can Emma run per hour? Why does Athena win the contest?a .Zeus said it was more useful than Poseidon's giftb. She doesn't, Poseidon wins the contestc. Because she beat Poseidon in the raced. Zeus said it showed true wisdom, being a gift of peace and plenty What is the slope please help youll be marked brainliest TYSMMMMMM 32x (8-5) 62+(4x3)42-(14-12) solve pls bainliest . 4th root of 1/16 as a fraction HAIKUFive dead leaves fallingupward onto the branchesof a bare oak treeTHE END OF WINTERAs I approached, I startled a group of sparrows that had been feeding in the grass, and they flew up to the safety of an old oak tree. It was still early enough in the year that the branches of the tree were bare. But the bird songs and the warm sun made me feel certain that winter was ending. As I watched, the sparrows dropped from their high perches and settled again in the grass to hunt for food. Like winter, I was just an interruption.What part of the story does the poem focus on?A.The fact that it still looks like winterB.The ways you can see that spring is comingC.What the trees look like before they get their leavesD.What the sparrows look like flying up into the oak tree a playground is 750 M long and 250 m broad find the cost of levelling at rupees 16 per 100 square metres 2. Quinnel made 14 shots out of the 40 he took during his first season of basketball.Suppose he took 60 shots during his second season. How many shots would you expectQuinnel to make during his second season of basketball? What name is given to an act of Congress to recognize the importance of information security to United States interests Pls help this is due tmr what takes place when the pollen grains are transferred to the stigma of the same flower with the help of pollinators Help me plz:11. Solve the following equations:a. 5(x - 4) = 10b. 2x(4x + 3x) = 21c. 3(4 - 2x) = 28d. 10x(2 + 13) = 300 A container holds 4 gallons of lemonade. A large lemonade contains 16 ounces. How many large lemonades could a restaurant sell before they run out of lemonade? A pirate was digging a hole on an island to bury his treasure. If he is able to dig a hole into the sand at 2 feet per minute, what integer would represent how deep the would be after 7 minutes? A rise in __________ released from the sarcoplasmic reticulum allows actin to bind to myosin and cause a contraction, which requires __________ energy. Q.x 2 = 1.000.000.000x = ? V (1) = 65t+280, where time , in minutes,.the pump has been on .how many gallons of water were.in the tank when the pumps were turned on Please Answer 1-5 please. why was the inca society divided into four parts