Non examples of chemical change
List some please

Answer:

The specific heat of the metal is 0.212 J/(g°C).

Explanation:

We can calculate the specific heat of the metal by the following equilibrium:

\( q_{a} = -q_{b} \)                          

\( m_{a}C_{a}\Delta T_{a} = -m_{b}C_{b}\Delta T_{b} \)

\(m_{a}C_{a}(T_{f_{a}} - T_{i_{a}}) = -m_{b}C_{b}(T_{f_{b}} - T_{i_{b}})\)

In the above equation, we have that the heat loses by the metal (b) is gained by the water (a).

\(m_{a}\): is the water's mass = 72.0 g

\(C_{a}\): is the specific heat of water = 4.184 J/(g°C)            

\(T_{i_{a}}\): is the initial temperature of the water = 19.2 °C

\(T_{f_{a}}\): is the final temperature of the water = 25.5 °C

\(m_{b}\): is the metal's mass = 141 g

\(C_{b}\): is the specific heat of metal =?

\(T_{i_{b}}\): is the initial temperature of the metal = 89.0 °C

\(T_{f_{b}}\): is the final temperature of the water = 25.5 °C

\(m_{a}C_{a}(T_{f_{a}} - T_{i_{a}}) = -m_{b}C_{b}(T_{f_{b}} - T_{i_{b}})\)

\(72.0 g*4.184 J/(g^{\circ} C)*(25.5 ^{\circ} C - 19.2 ^{\circ} C) = -141 g*C_{b}*(25.5 ^{\circ} C - 89.0 ^{\circ} C)\)            

\( C_{b} = -\frac{72.0 g*4.184 J/(g^{\circ} C)(25.5 ^{\circ} C - 19.2 ^{\circ} C)}{141 g(25.5 ^{\circ} C - 89.0 ^{\circ} C)} = 0.212 J/(g^{\circ} C) \)

Therefore, the specific heat of the metal is 0.212 J/(g°C).

I hope it helps you!

The consumption function based on the information in Table 5 is as follows: C = 2577 + 0.75Y. It is given, Consumption function, C = Ca + cY Where, Ca is autonomous consumption expenditure, c is marginal propensity to consume (MPC)Y is disposable income

The consumption function based on the information in Table 5 is: Table 5Income(¥ billions)

Consumption(¥ billions)100025020007526000102772750120301.

Write the consumption function in the given format. Ca = Autonomous consumption expenditure c = MPCY = Disposable Income Calculation:

We can obtain the value of Ca as follows: C = Ca + cY

Put the given values, C = 2577Ca + 0.75YAt Y = 1000 billion, C = 2577(1) + 0.75(1000)

= 8327 billion

At Y = 2000 billion, C = 2577(1) + 0.75(2000)

= 13277 billion

At Y = 3000 billion, C = 2577(1) + 0.75(3000)

= 18277 billion

At Y = 4000 billion, C = 2577(1) + 0.75(4000)

= 23277 billion

At Y = 5000 billion, C = 2577(1) + 0.75(5000)

= 28277 billion

Therefore, the consumption function based on the information in Table 5 is as follows: C = 2577 + 0.75Y.

To know more about consumption function, refer

https://brainly.com/question/28145641

#SPJ11

The specific heat capacity of the material is approximately 0.128 J/(g·K).

To calculate the specific heat capacity of a material, we can use the formula:

Q = mcΔT

where Q is the heat energy absorbed or released, m is the mass of the material, c is the specific heat capacity, and ΔT is the change in temperature.

In this case, we have the following information:

Mass (m) = 190 g

Heat energy (Q) = 1,300 J

Change in temperature (ΔT) = 52 K

Plugging these values into the formula, we can solve for the specific heat capacity (c):

1,300 J = (190 g) * c * (52 K)

Dividing both sides of the equation by (190 g * 52 K), we get:

c = 1,300 J / (190 g * 52 K)

Calculating this value:

c ≈ 0.128 J/(g·K)

Therefore, the specific heat capacity of the material is approximately 0.128 J/(g·K).

Learn more about specific heat capacity from the link given below.

https://brainly.com/question/28302909

#SPJ4

Answer:

Any time a simple metal reacts with an acid it is a single displacement reaction.

Explanation:

Answer: It’s 4.0

Explanation: I just took the test and got it right:)

Answer: The answer is A heat and pressure

Explanation:

Out of the options listed, "Water vapor, carbon dioxide, and other volatile organic compounds (VOCs)" would not be considered a material stream exiting the roaster.

A material stream is a flow of a physical substance, such as a solid, liquid, or gas, that enters and exits a system or process. In the context of a chemical or process plant, a material stream is a stream of raw materials, intermediate products, or final products that are being produced, transported, or processed.

To perform a mass balance on a coffee roaster, you would consider all the material streams that enter and exit the system. These are gaseous emissions resulting from the roasting process and are not a physical material. The other options, "Spent coffee grounds," "Chaff," and "Roasted coffee beans" are physical materials that can be weighed and measured, and would be considered as material streams exiting the roaster.

Learn more about Water vapor:

brainly.com/question/22349941

#SPJ4

Answer:

Argon Gas

Explanation:

:)

Tetrachloroethylene is a liquid that has been commonly used in the process of dry cleaning. However, it is now being phased out due to its potential to cause cancer.

Tetrachloroethylene, also known as perchloroethylene or "perc," is a colorless liquid that is primarily used as a solvent in dry cleaning. It is effective at removing grease, oil, and other stains from fabrics. However, it has been found to have carcinogenic properties, meaning it has the potential to cause cancer in humans.

The International Agency for Research on Cancer (IARC) has classified tetrachloroethylene as a Group 2A carcinogen, which means it is probably carcinogenic to humans. It has been associated with an increased risk of various types of cancer, including bladder, esophageal, and cervical cancer. In summary, tetrachloroethylene is a liquid used in dry cleaning that is being phased out due to its potential to cause cancer.

To know more about Tetrachloroethylene visit:
brainly.com/question/28408880

#SPJ11

Answer:

2c2h2+502=4co2+H2O

Explanation:

this is the answer

Yes, is a correct diagram for a Lewis dot structure of Fluorine because it correctly shows 9 electrons.

What is Lewis dot structure?

The group 17 element fluorine has a total of nine electrons in the following configuration: 1s2 2s2 2p5. Fluorine's outermost shell has seven electrons. In the 2s and 2p electronic shells, respectively, there are two and five electrons. whose fluorine lewis dot structure depicts as dots.

In the Lewis structure, the letter Fluorine (F) is written inside a bracket, surrounded by seven dots that stand in for the valence electrons.

To learn more about Lewis dot structure from the given link
https://brainly.com/question/20300458
#SPJ1

Answer:14.5 grams of K2O

Explanation:

4K(s) + O2(g) → 2 K2O(s). If a staff member at a laboratory has 12.0 grams of potassium metal,  14.5 grams of K2O is the theoretical yield of potassium oxide that the scientist could potentially produce from the reaction with oxygen gas. Therefore, option B is correct.

The yield of a reaction is used to represent how much of a product is produced from that reaction. The theoretical yield is the quantity of product that stoichiometry predicts will be produced, whereas the actual yield is the amount that is actually produced.

Divide the ratio by the limiting reactant's molecular weight. The answer is the theoretical yield of the desired product in moles.

It is useful to know how much product will be created with specific reactant amounts before carrying out chemical reactions. The theoretical yield is what is meant by this. This method can be applied to determine the theoretical yield of a chemical reaction.

Thus, option B is correct.

To learn more about theoretical yield, follow the link;

https://brainly.com/question/175584

#SPJ2

This issue requests for the atmospheric pressure in units of atmospheres, which is 560 mmHg at 2000 meters above sea level is 0.737 atm.

The Earth's mean sea-level atmospheric pressure is roughly equivalent to one atm, or one atmosphere, and is measured in the atm unit. In most cases, the hydrostatic pressure brought on by the weight of the air above the measuring location is a near approximation to atmospheric pressure.

Over 1,270kg (2,800lbs) of force is applied to every square inch of an ROV's surface when it descends to a depth of 2,000 meters.

In order to get the correct conversion, we use the following equivalence statement relating mercury millimeters and atmospheres:

760 mmHg = 1 atm

Hence, the required conversion turns out to be:

560 mmHg*(1atm/700)=0.737 atm.

To know more about  atmospheric pressure visit:-

https://brainly.com/question/28310375

#SPJ4

Answer:

A neutral atom of Cobalt (Co) has an atomic number of 27 and an atomic mass of 59. Therefore, Co has 27 electrons, 27 protons and 32 neutrons.

Explanation:

An atom consist of electron, protons and neutrons. Protons and neutrons are present with in nucleus while the electrons are present out side the nucleus.

All these three subatomic particles construct an atom. A neutral atom have equal number of proton and electron. In other words we can say that negative and positive charges are equal in magnitude and cancel the each other. For example if neutral atom has 6 protons than it must have 6 electrons. The sum of neutrons and protons is the mass number of an atom while the number of protons are number of electrons is the atomic number of an atom.

The atomic number Co is 27 it means it has 27 protons and 27 electrons.

The mass number is sum of protons and neutrons, thus number of neutrons are

59 - 27 = 32 neutrons

From the molecular formula, you can get the percentage of atoms present in the compound.

What is Molecular Formula?

A Molecular formula is intended to be a chemical notation used to describe the number and types of elements present in a single molecule of a compound. The constituent elements contained in the compound are represented by chemical symbols. The total number of each element present in the compound is shown as a subscript after the chemical symbol.

There are no words in the molecular formula. Contains icons only. The simplest form of molecular formula is known as the empirical formula. An empirical formula can give the proportions of each element present in a compound.

Hence, From the molecular formula, you can get the percentage of atoms present in the compound.

To learn more about the Molecular Formula, click on the given link: https://brainly.com/question/13058832

#SPJ4

Answer:

No

Explanation:

ionic compounds do not conduct electricity when in solid state. ionic compounds exist only as solid under normal conditions.

Answer:

 C.

Energy is transferred from the water to the shore, but the water does not travel with the energy.

Explanation:

STUDY ISLAND TOLD ME

According to the bohr model of the atom, the single electron of a hydrogen atom circles the nucleus is specific allowed orbits.

To learn more about Gravitational refer to:

https://brainly.com/question/27943482

#SPJ4

Answer: Metal atoms lose electrons from their outer shell when they form ions: the ions formed are positive, because they have more protons than electrons.

The 3-bromo-2-methylpentane is the alkyl bromide and azide is the nucleophile.

The bromine leaving group initiates the reaction, which is then followed by an assault on the electrophilic carbon at the bromine leaving site by the nucleophile azide.

In this reaction, azide and alkyl bromide mix to form the desired product using the SN2 mechanism. Through a coordinated process, the bromine atom is simultaneously removed and sodium azide, acting as a nucleophile, attacks the carbon-containing bromine group to produce the SN2 product.

As a result, we can infer that azide is the nucleophile and 3-bromo-2-methylpentane is the alkyl bromide.

A chemical species known as a nucleophile donates an electron pair in response to another chemical species in order to create a chemical bond. An electrophile can be any molecule, ion, or atom that is in some way electron-deficient. A nucleophile typically has one electron pair and is negatively charged or neutral.

Learn more about nucleophile:

https://brainly.com/question/14052597

#SPJ4

Explanation:

Atomic;

Numb...

SymbolN

ame

Atomic Mass...1HHydrogen1.007972HeHelium4.002603LiLithium6.941

The protons neutrons and electrons are there in a neutral atom

In a neutral atom of ⁶⁰Co (cobalt-60), there are 27 protons, 27 electrons, and 33 neutrons.

We have to find the number of protons, neutrons, and electrons in a neutral atom of ⁶⁰Co (cobalt-60).

The number of protons = The atomic number.

The atomic number of cobalt is = 27

Therefore, the protons are 27

As protons and electrons are equal. Then, the number of electrons is 27.

The number of Neutrons = Atomic number - Number of protons.

Neutrons = 60 - 27

Or, neutrons = 33

Hence, the number of neutrons is 33, electrons are 27, and protons are 27 in a neutral (cobalt-60).

To learn more about neutrons, protons, and electrons, visit: https://brainly.com/question/11691497

#SPJ4

In order to solve this, you will need to know how many moles of CaCl2 you will need, and to do so, you must look at the concentration of the solution.

You are told that the concentration of the solution is 0.19M, meaning that there is 0.19 moles of CaCl2 for every 1 liter of solution. However, you don't have 1 liter of solution, you have 445.2 mL. You must convert this to liters by dividing by 1000.

445.2 mL *  (1 L / 1000 mL) = 0.4452 L

Now, you can solve for how many moles the solution must have. Since M = mol / L and you are given M and L, you can set up an equality as follows:

0.19M = mol / 0.4452 L

Now, in order to find the number of moles, you multiply both sides by 0.4452L

0.19M * 0.4452 L = moles = 0.084588mol  

Now, you must calculate the molar mass of CaCl2 by using the periodic table

MM Ca = 40.078 g/mol

MM Cl = 35.452 g/mol

40.078 + (35.452 * 2) = 110.982 g/mol

Now you multiply the number of moles in the solution you calculated by the molar mass.

0.084588mol * 110.982 g/mol = 9.387 g CaCl2

Answer:

At -20°C the mercury state will be liquid

Explanation:

The melting point of a substance is the temperature at which it changes from solid state to a liquid state, and the boiling point is the temperature at which it changes from liquid state to a gaseous state.

If mercury melts at -39°C and boils at 356.9°C, it means that if the temperature is lower than -39°C, mercury will remain al solid state. Between -39°C and 356.9°C, the state of mercury will be liquid and, above 356.9°C mercury will remain at gaseous state.

So, at -20°C the mercury state will be liquid, because that temperature it is between -39°C and 356.9°C.

Answer:true

Explanation:

Answer:

New growth of trees is an exception

Explanation:

when volcanoes erupt, they release hot magma that is destructive to the environment causing personal damage, lack of breathable air and death.

heat produce cannot in any way help in growth of trees

We have that the arrangement of particles of NaCl is most ordered in a sample of

NaCl(s)  

i.e solid NaCl

From the question we are told

The arrangement of particles is most ordered in a sample of  

1. NaCl(aq)

2. NaCl(l)  

3. NaCl(g)  

4. NaCl(s)

NaCl Generally known as sodium chloride or salt exist in four main states as shown

1. NaCl(aq)

2. NaCl(l)  

3. NaCl(g)  

4. NaCl(s)

Mow in a subject of its arrangement of particles we can see that as its state changes from gaseous through to solid it gains in form and arrangement of particles

Therefore

The arrangement of particles of NaCl is most ordered in a sample of

NaCl(s)  

i.e solid NaCl

For more information on this visit

https://brainly.com/question/1641336  

the no. of Al atoms required to be laid side by side to make up a distance of 4.23 mm is = 4.23/(2 * 143 * 10^(-9) )

= 14790210 atoms of Al.

What is the radius of an atom?

The atomic radius of an atom is the distance between the centre of the nucleus and the outermost electron in each of its energy shells. Since the border is not a clearly defined physical entity, there are many non-equivalent definitions of atomic radius. The four most popular ways to define atomic radius are van der Waals radius, ionic radius, metallic radius, and covalent radius. Due to the challenges of isolating individual atoms to measure their radii, atomic radii are frequently measured in a chemically bonded state; yet, theoretical calculations are simpler when individual atoms are taken into account.

1 pm = 10^(-9) mm

radius of Al atom = 143 pm = 143 * 10^(-9) mm

Diameter of Al atom = 2 * 143 * 10^(-9) mm

Thus, the no. of Al atoms required to be laid side by side to make up a distance of 4.23 mm is = 4.23/(2 * 143 * 10^(-9) )

= 14790210 atoms of Al.

To learn more about radius of an atom from the given link below,

https://brainly.com/question/10534465

#SPJ4