“Kids and grown-ups love it so, the happy world of HARIBO!” Who does not like the dark brown liquorice and its lovely taste?! Tasty above all is the liquorice-plant. As another ingredient “ammonium chloratum” very often is used as an acidifier. This name is apothecary’s jargon and the old chemical name of ammonium chloride (NH4Cl).

Ammonium chloride, also known as “salt of salmiak”, is allowed up to 20 g/kg in liquorice by the nutrition laws.

Ammonium chloride can be produced from ammonia (NH3) and hydrogen chloride (HCl). You are a student trainee with HARIBO’s. Suddenly the machine in which the ammonia and the hydrogen chloride are combined and added to the liquorice sounds the alarm, but your boss is in his office on an urgent telephone call and does not want to be interrupted. The valves controlling the doses of ammonia and hydrogen chloride have to be adjusted. You have to act quickly. It is very important not to overdose the ammonium chloride, because its amount in the liquorice is controlled regularly by an independent supervision agency.

The machine produces ammonium chloride for a thousand bags of 200 g liquorice each.

The order of increasing reactivity of the metals is: magnesium, sodium, and potassium.

The reactivity of metals increases as one goes down the group and increases from right to left in th periodic table.

For the three elements, sodium potassium, and Magnesium, the least reactive is magnesium while the most reactive is potassium.

This is because of increase in reactivity based on the properties of the elements.

Therefore, the order of increasing reactivity of the metals is: magnesium, sodium, and potassium.

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Answer:

new volume = 4.458 Liters

Explanation:

A balloon inflated in a room at 24°c has a volume of 4.00Liters The balloon is heated to a temperature of 58°c.What is the new volume if the pressure remains constant

charles law

volume1/temperature1 = volume2/temperature2

temperature has to be converted to kelvin

temperature 1 = 24+273=297

temperature 2 = 58+273=

4/297 = volume2/331

volume2 = (4*331)/297

volume2 = 4.45791245791 Liters

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Answer:

660J/kg.°C

Explanation:

Using the fact that

∆E of metal + ∆E of water = 0

∆E of the metal = Q = m*c*(T2-T1)

Where

Q = heat lost or gained = ?

m = mass of metal in kg = 0.076kg

c = specific heat of the metal = ?

T1 = 96°C

T2=31°C

∆E of the water=Q= m*c*(T2-T1)

Where

Q = 0.120*4180*6.5 = 3260J

Therefore

3,260J + Q of the metal =0

3,260J + 0.076*C*(31.0–96.0)=0

3,260J - 4.94c = 0

3,260 = 4.94c

3,260/4.94 = c

660J/kg.°C = specific heat of the metal

hope this helps:)

[tex](2.4L)NH_3[/tex] is the maximum volume of ammonia gas that could be produced.

A mole is a very important unit of measurement that chemists use. A mole of something means you have 602,214,076,000,000,000,000,000 of that thing, like how having a dozen eggs means you have twelve eggs.

Here is the balanced equation:

[tex]N_2 +3H_2[/tex] → [tex]2NH_3[/tex]

At STP, 1 mole has a volume of 22.4 Liters. To do a dimensional analysis conversion from Liters to moles:

Please observe that Liters and moles vary directly, therefore, we can simply multiply each of the coefficients (that represent moles) by

1.2 L to obtain the volumes:

[tex]\frac{N Litres}{1} \frac{1}{22.4 Litres} =\frac{N }{22.4} mole[/tex]

[tex](1.2L)N_2+(3.6L)H_2 = (2.4L)NH_3[/tex]

Hence, [tex](2.4L)NH_3[/tex] is the maximum volume of ammonia gas that could be produced.

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Answer :]

to convert from g NaOH to mol NaOH. = 1.48 g NaOH are needed to neutralize the acid.

Answer:

Out of the above mixtures, seawater, air, and soda water are solutions.

hope this helps :3

Answer:

962.2 K

Explanation:

Ideal Gas Law Equation:

PV = nRT

Writing a Equation to find T2:

PV = nRT

(P1V)/(nT1) = R = (P2V)/(nT2)

(P1)/(T1) = R = (P2)/(T2)                  V and n cancel out since they are constant.

(P1)/(T1) = (P2)/(T2)

T2 = (P2)(T1)/(P1)

Substituting Into the Equation:

T2 = (283 kPa * 170 K)/(50 kPa)

T2 = 962.2 K

Answer:

Refrigerator

Explanation:

Think about it. Equilibrium is between 2 "places", and if you didn't open the fridge, there would be a buildup of cold air.

Because of that buildup, it would keep getting colder until it isn't possible to get cold anymore. That is equilibrium.

However, if you were to open the door for a very, very long time, you would lower the temp. inside the fridge, therefore causing for the room you are in to be slightly colder, and the fridge to decrease in cold. The fridge will still be slightly cold, but it won't be lukewarm if you leave it for 2 hours. (Unless it's broken)

That is equilibrium :)

Answer: D

Explanation:

I assume you meant [tex]\text{K}_{2}\text{SO}_{4}[/tex].

So, the formula mass of potassium sulfate is 2(39.0983)+32.065+4(15.9994)=174.2592 g/mol.

So, 5.00 moles have a mass of (5.00)(174.2592), which is about 870 g

The name of the configuration management procedure that involves the collection of information about a system under normal operating conditions is Baselining.

Baselining is a management process used to analyze a collection of information about a particular system.

This procedure (Baselining) is well known to analyze computer performance in a given network.

In conclusion, the name of the configuration management procedure that involves the collection of information about a system under normal operating conditions is Baselining.

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The planet that scientists believe prevented the asteroids in the asteroid belt from forming a planet is Jupiter.

Asteroids are known to be leftovers from the formation of the solar system for about 4.6 billion years ago.

Why Jupiter prevented asteroids

Therefore, Jupiter made asteroids form group of debris, rather than forming a planet.

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The volume of hydrogen chloride gas, HCl at s.t.p yielded is determined as 4.032 dm³.

The number of moles of the gas yield is calculated as follows;

n = 1.2 dm³ x 0.15 mol/dm³

n = 0.18 mole

one mole of HCl gas at stp = 22.4 dm³

0.18 mole = ?

= 0.18 x 22.4 dm³

= 4.032 dm³

Thus, the volume of hydrogen chloride gas, HCl at s.t.p yielded is determined as 4.032 dm³.

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Answer:

1) Use a stronger battery

Explanation:

I'm going to quote Northeastern University (I could try to type out an explanation but this will probably be more concise)

"Electromagnets are made of coils of wire with electricity passing through them. Moving charges create magnetic fields, so when the coils of wire in an electromagnet have an electric current passing through them, the coils behave like a magnet."

4) So, if the coils are creating a moving charge, and there are more coils, each coil will be "setting up" its own magnetic field.  This means that less coils will make the electromagnet weaker

2) Because it is an electromagnet, a plastic nail is not going to produce the same effect. An electromagnet is picking up metal, and it is not picking up plastic. This is because plastic (a material with low permeability) does not have a magnetic field that is able to interact with a magnet.

[Permeability is a measure of how easily magnetic lines of force can pass through a material.]

3) There's not really a point that I can imagine of gluing the wire to the nail. Glue would put more distance between the nail and the magnet than nothing being there at all.

1) More voltage in a battery produces a larger current in the wire. This means that the strength of an electromagnet is affected by the voltage/strength of the battery. So, a stronger battery would make the electromagnet stronger, and a weaker battery would make the electromagnet weaker.

The electromagnet works, and he's able to pick up metal objects with it, he does to make it stronger  to use a stronger battery. Therefore, option 1 is correct.

An electromagnet is a type of magnet where an electric current creates the magnetic field. The wire that makes up an electromagnet is typically twisted into a coil. A magnetic field is produced by a current flowing through the wire and is concentrated in the hole in the center of the coil.

Electrical devices including motors, generators, speakers, computers, and MRI machines cannot be built without electromagnets. They are well known for their ability to lift and move heavy magnetic objects, such as scrap iron.

Many electromagnets have an advantage over permanent magnets because they can be easily turned on and off, and increasing or decreasing the amount of electricity flowing around the core can control their strength.

Thus, option 1 is correct.

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Answer:

analysis organic and inorganic compounds,refine substances and chemicals products

(a) The vegetable soup you had for lunch: mixtures substances

(b) The fertilizer your dad spreads on the front lawn in the spring:   mixtures substances

(c) the salt you sprinkle on your French fries: pure substances

(d) the hydrogen peroxide you cleaned a cut finger with:  pure substances

In chemistry and related fields, a mixture refers to a substance that is composed of two or more substances. This is the opposite of a pure substance that has not been combined with others. In the case of vegetable soup, this is a mixture because it integrates multiple substances such as water, salt, vegetables, etc.

On the other hand, a mixture is classified as homogeneous if the elements are completely integrated, and the final substance is uniform or as heterogeneous if the mixture is not uniform. In the case of the soup, this can be classified as a heterogeneous mixture because in most cases you can identify the elements in it such as pieces of vegetables and therefore it is not a uniform or homogeneous mixture.

Thus, this could be the answer.

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The theoretical yield of a substance is the amount of the mass that is calculated from stoichiometry. The mass of sodium chloride produced is 13.03 gms.

Mass of the substance is a multiplication of the molar mass and moles.

The balanced reaction is given as:

CuCl₂ + 2NaNO₃ ⇒ 2NaCl + Cu(NO₃)₂

Moles of copper chloride are calculated as: 15 ÷ 134.45 = 0.115 moles

Moles of sodium nitrate are calculated as: 20 ÷ 84.99 = 0.2353 moles

From the reaction, 1 mole of copper chloride gives 2 moles of sodium chloride so, 0.115 moles of copper chloride will produce 0.223 moles.

Similarly, 2 moles of sodium nitrate produce 2 moles of sodium chloride so, 0.2353 moles produce 0.4706 moles.

From this, it can be concluded that copper chloride is a limiting reagent and will be used to calculate the mass of NaCl.

Mass of NaCl is calculated as: Mass = 0.223 moles × 58.44 = 13.03 gms.

Therefore, 13.03 gms is the theoretical yield of sodium chloride.

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Answer:

B

Explanation:

i just know

Answer:

B

Explanation:

Hydrocarbons are with hydrogen and carbon only, so therefore you can immediately eliminate C and D. Therefore, we are left with A and B. Unsaturated hydrocarbons have double bonds or more, so B would be our answer (Double bond between carbon 1 and 2)

Answer:

The biggest risk with recharging alkaline batteries is leakage. As you probably know, alkaline batteries leak even under normal circumstances. Internal off gassing, made worse by heat, creates pressure that can breach battery seals. Therefore, the risk of leakage is an even bigger risk when recharging.

Answer:

When an atom loses an electron it becomes ionized

Answer:

See below

Explanation:

If your reaction equation is balanced, you will know the number of Fe atoms following the reaction.....it will be the same on both sides of the equation.

They travel in compressions and rarefactions and are propagated through air.

Sound waves are longitudinal waves. They travel in compressions and rarefactions and are propagated through air.

The following are true about sound waves:

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Fresh water pollutants  are substances which pollute fresh water and  industrial waste, is most harmful fresh water pollutant to man and aquatic organisms.

Pollutants are substances which cause harm when they are present in the environment.

Pollutants include chemicals such as petroleum and material such as sewage.

The presence of pollutants in freshwater results in water pollution and make the water unfit for drinking purposes and also harms aquatic life in freshwaters.

Some freshwater pollutants include:

Of these pollutants, the most dangerous fresh water pollutant is industrial wastes as they kill aquatic organisms most due to the presence of harmful chemicals in them.

Therefore, fresh water pollutants such as industrial waste is most harmful to man and aquatic organisms.

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Answer:

12 moles H₂O

Explanation:

To find the amount of water produced, you need to use the given amount and multiply it by the mole-to-mole ratio from the equation. These numbers are the coefficients of the molecules you are converting from and to. When writing the ratio, make sure to arrange it in a way that allows for the cancellation of units.

1 C₆H₆ + 9 O₂ ----> 6 CO₂ + 6 H₂O

2 moles C₆H₆          6 moles H₂O
---------------------  x  -------------------------  =  12 moles H₂O
                                 1 mole C₆H₆

An aqueous solution of an arrhenius acid reacts with an aqueous solution of an arrhenius base to produce water and salt.

This is a compound which is formed as a result of a neutralization reaction between acid and base.

Arrhenius acid reacts with an aqueous solution of an arrhenius base to produce water and salt due to increased concentration of H+ and OH- respectively.

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The conductance of the electric current through the electrolytic solution increases with increase in concentration.

Electrolytic solutions are solutions that are capable of conducting an electric current due to presence of ions.

The current flowing in an Electrolytic solutions is calculated as;

Q = It

I = Q/t

where;

Increase in the concentration of the charges, increases the amount of charges in the solution and hence the conductance of the solutions will increase as well.

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Eclipsed conformers possess torsional strain and Staggered conformers are lower in energy than eclipsed conformers are TRUE about the stability of conformers.  

Eclipsed conformers are molecular arrangements where two substituents are very close and thus produce torsion.

Moreover, Staggered conformers are molecular arrangements where substituents are found at a maximum length.

In conclusion, Eclipsed conformers possess torsional strain and Staggered conformers are lower in energy than eclipsed conformers are TRUE about the stability of conformers.  

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Answer:

Gases have the highest kinetic energy, followed by liquids, and then solids.

Explanation:

How does the kinetic energy of solids, liquid, and gases compare ?

Higher kinetic energy causes particles to vibrate or move around faster. Solids have the lowest kinetic energy so vibrate very little.

Liquids have more kinetic energy so particles slide past each other.

Gases have the most kinetic energy so fly around in the air.

Answer:

C

Explanation:

you can relate this with their temprature, more kinetic energy means more movement of molecules. This creates heat which then melts or vaporizes substances. So, as K.E increases a substance will change from solid to liquid and eventually gas.

Answer:

38.54 x 10^23 atoms of N2

Explanation:

Each mole contains Avagadro's Number ( 6.022 x10^23) of particles

   3.2   x     6.022 x 10^23 = 19.27 x 10^23 MOLECULES

   N2  is TWO atoms    soooo    2 x 19.27 x 10^23 = 38.54 x 10^23 atoms

The type of triangle that is created by the three cities is an obtuse triangle, because 22 + 51 > 54.

Obtuse triangle is a type of triangle in which any of its angle is greater than 90 degrees, and the sum of the interior angles must by equal to 180 degrees.

Considering length AB and AC = 22 miles + 51 miles = 73 miles

The sum of length AB and AC is greater than length BC, and the opposite angle of side BC is greater than 90 degrees.

Thus, the type of triangle that is created by the three cities is an obtuse triangle, because 22 + 51 > 54.

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