did the addition of 12m hcl cause the equilibrium to shift towards products or towards reactants? choice 1 of 2:products choice 2 of 2:reactants grading comment: what observation did you make in lab that allowed you to determine this?

Answer:

B and C

Explanation:

Answer:

Cumulonimbus and Cirrus clouds

Explanation:

Answer: B. Energy

Explanation: The matter is converted into energy, which is released in the form of radiation, this is due to the fact that the mass of the products of the reaction is less than the mass of the reactants, and this difference in mass is converted into energy. Aka (\(E=mc^{2}\)).

The specific heat capacity is  the quantity of heat (J) absorbed per unit the mass (kg) of the material. when you try to heat up the substance that has a high specific heat , it will takes the more energy to rise the temperature .

The specific heat capacity is  the quantity of heat (J) that absorbed the per unit mass (kg) of the material.  when its temperature will increases 1 K or the 1 °C, and the unit of the specific heat capacity is   J/(kg K) or the J/(kg °C).

ween we try to heat up the substance that has the high specific heat capacity then it will takes the more energy to rise the temperature .

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Answer:

because no chemical change is happening

Explanation:

oxygen

Explanation:

carbon dioxide and sunlight helps in photosynthesis, while clorophyll is present in leaves where photosynthesis happen.

Answer:

oxygen

Explanation:

The combustion reaction of butane gives carbon dioxide and water as written below:

\(\rm C_{4} H_{10} + 8O_{2} \rightarrow 4 CO_{2} + 8H_{2}O\)

Similarly the reaction  between Zn and copper nitrate can be written as follows:

\(\rm 2 Zn +Cu(NO_{3})_{2} \rightarrow 2ZnNO_{3} + Cu\)

The balanced equation  of a reaction shows the perfect stoichiometry of reactants and products. The number of each elements in the reactants must be equal to their number in the product side.

The crisscross method of the formula is written as giving the charge of the cationic part as the subscript to the anionic part and vice versa.

The remaining reactions can be completed as following :

\(\rm NaOH + KBr \rightarrow NaBr + KOH\)

\(\rm2 Li + S_{2} \rightarrow 2 Li S\)

Similarly the decomposition of water can be  written as:

\(\rm 2 H_{2}O \rightarrow H_{2} + O_{2}\)

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Explanation:

I did it in steps to help u to understand :)

Answer: permeable and porous

Answer: C

Explanation: I believe it's C because I know A, B, and D are 100% correct

and if you look at solids, there pact together, pact together mean it cant move.

The mass of the piece of copper is  239.9 g

The density of a substance is a measure of its mass per unit volume. In the case of copper, its density is 8.96 g/cm3 at 25°C. This means that 1 cm3 of copper weighs 8.96 grams at 25°C.

To determine the mass of a piece of copper that occupies a certain volume, we can use the formula: mass = density x volume

In this case, the volume of the piece of copper is 26.7 cm3 and the density is 8.96 g/cm3. So we can plug these values into the formula:

mass = 8.96 g/cm3 x 26.7 cm3

By multiplying the density by the volume, we find that the mass of the piece of copper is 239.9 grams.

The final answer is 239.9 g.

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Once upon a time, there was a spacecraft named "Dawn" that was launched on a mission to study the dwarf planet Ceres. The spacecraft was equipped with state-of-the-art technology and a team of highly skilled scientists and engineers were aboard to control and monitor the mission.

As Dawn approached Ceres, the team was amazed at the vast, barren landscape that stretched out before them. They couldn't wait to start collecting data and analyzing the planet's surface. However, soon after they arrived, they encountered a problem. The spacecraft's landing gear malfunctioned and they were unable to land on the surface.

The team quickly came up with a plan B and decided to study Ceres from orbit. They began to collect data and take pictures of the planet's surface. They were shocked to find that Ceres had a surprisingly varied landscape, with towering mountains, deep craters, and mysterious bright spots.

As the mission continued, the team discovered that Ceres had a subsurface ocean beneath its icy crust. The team was thrilled at this discovery and knew that it would greatly contribute to the understanding of our solar system.

However, just as they were about to wrap up their studies, the team received a distress signal from a nearby spacecraft that was in trouble. Without hesitation, the team of Dawn set course to investigate and assist.

As they neared the other spacecraft, they saw that it was under attack by a group of rogue asteroids. The team of Dawn quickly came up with a plan and using their advanced technology, they were able to defend the other spacecraft and destroy the asteroids.

The other spacecraft, grateful for the help, thanked the team of Dawn and they continued on their journey. The team of Dawn, proud of their bravery and the success of their mission, returned to Earth with a wealth of new data and knowledge about Ceres and the Solar System.

The Dawn spacecraft mission was a great success and it helped scientists understand more about the dwarf planet Ceres, and it also demonstrated the courage, resourcefulness, and the sense of camaraderie of the team.

The slip systems with the highest resolved shear stress for a stress of 4.75 MPa applied in the [001] direction of an FCC copper single crystal are {110}<111> and {112}<111>.

Slip systems are specific crystallographic planes and directions along which dislocations can occur in a crystal lattice. The resolved shear stress is the component of an applied stress that acts on a particular slip system.

In FCC (face-centered cubic) metals like copper, there are multiple slip systems available for plastic deformation. The {110}<111> and {112}<111> slip systems have been found to exhibit the highest resolved shear stress.

When a stress of 4.75 MPa is applied in the [001] direction of a unit cell of an FCC copper single crystal.

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Intermolecular forces, which hold the particles that make up solids and liquids together, have an impact on a number of the physical characteristics of matter in these two forms. Here the given figure represents intermolecular forces. The correct option is A.

The attracting and repellent forces that develop between the molecules of a substance are referred to as intermolecular forces (IMF), which is sometimes shortened. These forces operate as a mediator between a substance's individual molecules.

The majority of matter's physical and chemical properties are caused by intermolecular forces.

Thus the correct option is A.

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This might help you with your question.

This is a person who scientific researches to make more knowledge in a certain area of interest

Answer:

A. Barium

Explanation:

hope this helps! :)

The milligrams of the gas are formed if 10.0ml of 3.00% hydrogen peroxide solution decomposes, The density of the solution is 1.00 g/mL is 300 mg.

The equation is as follows :

2H₂O₂(l)   ---->   2H₂O(l)   +   O₂(g)

The density of the solution = 1 g/mL

The volume of the water = 100 mL

The volume of the H₂O₂ = 10 mL

The mass of the hydrogen peroxide = 3 g

2 moles of the hydrogen peroxide produces the 1 mole of the oxygen gas.

The mass of the O₂ =   (10 mL × 3 g of H₂O₂ ) / 100 mL

                                = 0.3 g = 300 mg

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In the given list of substances, the atoms held together by metallic bonding are found in option A, Chromium (Cr).

The substance in which the atoms are held together by metallic bonding is A, Cr (Chromium). Metallic bonding is a type of bonding that occurs between metal atoms, where the outermost electrons of the atoms are free to move around and are not associated with any one particular atom, resulting in a "sea" of delocalized electrons. This allows for strong bonds between the metal atoms, which is why metals tend to be strong and malleable. Metallic bonding occurs between metal atoms, and Chromium is the only metal on the list. Therefore the right option is A.

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The period of human development where smelted copper was combined with zinc, tin, and arsenic to create spear points and axes is the Bronze Age.

During the Bronze Age, which spanned from around 3300 BCE to 1200 BCE, human societies made significant advancements in metallurgy. This period marked a transition from the use of stone tools to the utilization of metal, particularly copper alloys known as bronze. Bronze is an alloy of copper and tin, and sometimes other metals like zinc and arsenic were also added to enhance its properties.

The combination of smelted copper with zinc, tin, and arsenic led to the creation of spear points and axes that were far more durable and effective than their stone counterparts. By mixing copper with these elements, the resulting bronze alloy exhibited improved hardness, strength, and resistance to corrosion. This breakthrough had a profound impact on warfare, agriculture, and trade during that time.

The Bronze Age brought about significant changes in human civilization, allowing for the development of more sophisticated tools, weapons, and other metal objects. It played a crucial role in shaping early societies, facilitating the rise of complex civilizations, and enabling the emergence of specialized craftspeople and metalworkers.

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Reflecting telescopes are preferred for scientific research because they are better suited for gathering large amounts of light and producing high-quality images. However, refracting telescopes are still popular for amateur astronomers and for viewing objects on Earth.

Reflecting telescopes are different from refracting telescopes because reflecting telescopes use mirrors, whereas refracting telescopes use lenses. The reflecting telescope was invented in 1668 by Sir Isaac Newton, and it has since become one of the most popular types of telescopes.
Reflecting telescopes use a mirror to gather and focus light, while refracting telescopes use a lens to do the same thing. Reflecting telescopes can be made much larger than refracting telescopes because it is easier to make large mirrors than it is to make large lenses. The mirror in a reflecting telescope is placed at the back of the telescope, and it gathers and reflects light back to a secondary mirror, which then reflects the light to the eyepiece. The eyepiece is where the observer looks through the telescope.In contrast, the lens in a refracting telescope is placed at the front of the telescope, and it gathers and bends light as it passes through. The lens focuses the light onto an eyepiece at the back of the telescope. Refracting telescopes are generally smaller than reflecting telescopes because of the difficulty of making large lenses.
Another difference between reflecting and refracting telescopes is the way they are constructed. Reflecting telescopes have a simple tube that houses the mirrors and eyepiece, while refracting telescopes have a more complex design with a long tube that contains the lens and eyepiece.

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When liquid 5.0 molar NiCl₂ is added to 0.3 M of NiCl₂ solution :  

  Molarity will increase  ( A )

What is Molarity ?

Molarity is the measure of the number of moles of solute present per volume of the solution. The addition of 5.0 molar nickel chloride into a 0.3M Nickel chloride solution will lead to an increase in the number of moles of Nickel chloride present in the solution.

Molarity is directly proportional to moles of solute in a solution therefore the molarity of the solution will increase.

Hence we can conclude that When liquid 5.0 molar NiCl₂ is added to 0.3 M of NiCl₂ solution :   Molarity will increase.

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Answer:

2 hard working men fix water spout for the community

Answer:

See Explanation

Explanation:

The rate of reaction means the same thing as the speed of a reaction. It refers to how quickly or slowly the reactants disappear or how quickly or slowly the products appear per unit time.

The equation of the reaction is; NO(g) + O3(g)→ NO2(g) + O2(g)

We can write differential equations to show the rate of disappearance of reactants or rate of appearance of products as shown below where the rate of reaction has been denoted as r;

r = -d[NO(g)]/dt = -d[O3(g)]/dt

OR

r = d[NO2(g)]/dt = d[O2(g)]

The negative signs shows that the concentration of reactants decreases with time while the positive sign shows that the concentration of products increases with time.

The correct answer is:

ΔG<0, Ecell>0 for spontaneous reaction.

The Gibbs energy of the spontaneous redox reaction in the voltaic cell is primarily responsible for the electrical work produced by a galvanic cell. A salt bridge and two half cells are typically its only components. A metallic electrode submerged in an electrolyte completes each half cell. Metallic wires are used to link these two half-cells outside to a voltmeter and a switch. A salt bridge is not always necessary when both electrodes are submerged in the same electrolyte.

In galvanic cells with spontaneous reactions, the standard Gibbs free energy change (ΔG) is negative, indicating that the reaction is thermodynamically favorable. The cell potential (Ecell) is positive, indicating that the reaction is spontaneous and can produce an electric current.

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Answer:

To determine the amount of a 70% acid solution and a 20% solution needed to produce a 45% solution, we can set up a system of equations based on the principles of concentration and volume.

Let's assume that x mL of the 70% acid solution needs to be mixed with (200 - x) mL of the 20% solution.

The total amount of acid in the resulting mixture can be calculated as follows:

0.70x + 0.20(200 - x) = 0.45(200)

Now, let's solve this equation to find the value of x:

0.70x + 40 - 0.20x = 90

0.70x - 0.20x = 90 - 40

0.50x = 50

x = 50 / 0.50

x = 100

Therefore,

100 mL of the 70% acid solution needs to be mixed with (200 - 100) = 100 mL of the 20% solution to produce 200 mL of a 45% solution

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Answer: C.  It is reduced.

Explanation:

Answer:

C

Explanation:

Because it is reduced.

The statement that would best explain the observation of no liquid being evident in the sealed bottle is: b. Liquid and vapor are at equilibrium in the bottle.

When liquid and vapor are at equilibrium in a closed system, it means that the rate of condensation (liquid turning into vapor) is equal to the rate of vaporization (vapor turning into liquid). In this case, it appears that all the liquid has vaporized, and no liquid is evident. This suggests that the liquid and vapor have reached a state of equilibrium, where the amount of liquid remaining is negligible compared to the amount of vapor present.

The vapor state is favored when equilibrium is established because the pressure exerted by the vapor phase reaches a point where it equals the vapor pressure of the liquid at that temperature. At this equilibrium point, no further net condensation or vaporization occurs, resulting in the absence of visible liquid in the sealed bottle.


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Answer:

because they emit liquid waste wich is later dumped into the ocean causing a lot of harm and many fatalities in sea life

Explanation:

Answer:

3.0 moles Al₂O₃

Explanation:

We do not know which of the reactants is the limiting reactant. Therefore, you need to convert both of the given mole values into the product. This can be done using the mole-to-mole ratio made up of the balanced equation coefficients.

4 Al + 3 O₂ -----> 2 Al₂O₃

6.0 moles Al            2 moles Al₂O₃
----------------------  x  -------------------------  =  3.0 moles Al₂O₃
                                    4 moles Al

4.0 moles O₂           2 moles Al₂O₃
----------------------  x  -------------------------  =  2.7 moles Al₂O₃
                                    3 moles O₂

As you can see, O₂ produces the smaller amount of product. This means O₂ is the limiting reactant. Remember, the limiting reactant is the reactant which runs out before the other reactant(s) are completely reacted. As such, the actual amount of Al₂O₃ produced is 2.7 moles.

However, since this problem is directly addressing how much Al₂O₃ is produced from Al, the answer you most likely are looking for is 3.0 moles Al₂O₃.