Thermodynamic Properties
Property Value
c (solid) 0.5 J/g °C
c (liquid) 1.0 J/g °C
c (gas) 2.0 J/g °C
Melting Point −114 °C
Boiling Point 78 °C


How much heat is released when 60.0 g of ethanol cools from 70 °C to 43 °C?

An Improvement is a

Over millions of years the layers of sediment become squashed and form sedimentary rocks. The shells of dead marine organisms fall to the sea bed and become part of the sediment. Marine organisms used the dissolved carbon dioxide to make calcium carbonate for shells. Carbon dioxide dissolved in the oceans.

Final answer:

Carbon is locked up in sedimentary rocks through the burial and transformation of organic material from living organisms into fossil fuels and organic-rich rocks like shale and carbonate rocks such as limestone.

Explanation:

Carbon becomes locked up in sedimentary rocks through a series of processes that are part of both the biological and geological carbon cycles. In the biological cycle, living organisms, mainly plants, consume carbon dioxide from the atmosphere to build their tissues. Upon death, this organic material may be buried under sediment and over millions of years, transform into fossil fuels like coal, or become part of organic-rich shale and limestone.

Carbonate rocks like limestone primarily form through the accumulation of marine organisms' calcite shells. The weathering of rocks on land also releases carbon to the soil, which can eventually become part of sedimentary layers. Over time, the carbon from these processes becomes compacted and cemented into sedimentary rocks, thereby locking the carbon away for prolonged periods, typically ranging from tens of millions to billions of years.

Explanations:- Looking at the given name, the parent chain name is Oct and Oct stands for eight carbons.

The suffix -ene at number 5 stands for a double bond between carbon number 5 and 6.

Bro stands for Br. Since the name has dibromo means there are two Br at number 3 and 7 carbons.

Similarly, there are two Cl at number 4 and 6 carbons.

Suffix -ol is used for OH group. The given name has 1,2-diol means there are two OH groups at number 1 and 2 carbons.

So, to draw the structure of the compound we put 8 carbons in a chain and then but a double bond between number 5 and 6 carbons. Put OH at number 1 and 2 carbons, put Br at number 3 and 7 carbons and Cl at number 4 and 6 carbons. If any of the carbons octet (four bonds) is still incomplete then we attach H atoms to it.

So, the structure of the compound is as given below:

3 ethyl, 4 methylheptane. The compound is named by first identifying the longest carbon chain in the structure. in this case the chain has seven carbon atoms thus the prefix hept-.

Next you identify the substituent groups attached to the long carbon chain and name them from the lowest value of the integer assigned to the carbon atoms from either side. From the right, the ethyl group is attached to carbon number 3 while from the left, the methyl group is attached to carbon number 4. We therefore start with the right and name the attached groups first, including the carbon atoms to which they are attached.

Then we also take into consideration the highest number of bonds between the carbon atoms which is one from the question. Thus the suffix -ane is added if a maximum of one bond, -ene,if two bonds and -yne if three bonds.

Answer:

The density of air goes down as you get higher with altitude.

Explanation:

Less air is pushing down on the molecules below it as you go up. This means that it is not as compacted, another word for which is dense.

The density of the air decreases with the increasing elevation (altitude).

Altitude is the height or distance measured in the up or vertical direction.

The higher the elevation, the less dense the air will be.

There are two reasons for this:

There is less air pushing down from above at higher altitudes, and gravity is weaker further away from the Earth's center.

As a result, air molecules may spread out more at higher altitudes, and air density drops.

Thus, As you go higher, the density of the air drops.

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Answer: Increase

Explanation:

According to Gay-Lussac's Law, the temperature of the gas would increase with increase in pressure on it while keeping the volume constant as the law states that the pressure of a given mass of gas varies directly with the absolute temperature of the gas, when the volume is kept constant.

To know more about the law,

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Final answer:

If the pressure of a gas is increased while keeping the volume constant, the temperature of the gas will increase. This is a direct consequence of Gay-Lussac's Law, where pressure and temperature are directly proportional to each other in these conditions.

Explanation:

When the pressure of a gas is increased and the volume is kept constant, according to Gay-Lussac's Law, the temperature of the gas must increase. This is because pressure and temperature are directly proportional in a contained gas when the volume is constant. So, if you increase the pressure, the temperature will also increase as the particles will collide more frequently and with greater energy against the walls of the container, which relates to an increase in temperature.

Now let's address the other scenarios briefly:

The answer would be A.

Reason Brownsted-lowry Acid donates protons and the opposite for Brownsted-lowry Base

Answer:

A - acid;base

Explanation:

760 mmHg = 1 atm Therefore 30 atm = 760 * 3 mmHg = 2280 mmHg p1 = 700 mmHg p2 = 2280 mmHg You can compare them from there. You may also convert mmHg to atm by dividing by 760.

Your answer would be 243.2 mm Hg

Answer: 243.2 mmHg

Explanation:

Pressure is defined as the force per unit area. It is measured in units called as atmosphere , pascal , torr and mmHg.

The conversion factor is :

[tex]1atm=760mmHg[/tex]

If 1 atmosphere corresponds to 760 mmHg

0.320 atm will correspond to = [tex]\frac{760}{1}\times 0.320=243.2mmHg[/tex].

Thus the pressure will be 243.2 mmHg

Final answer:

Using the balanced chemical equation [tex]2 ZnS + 3 O2 - 2 ZnO + 2 SO2[/tex], it is calculated that 2.7 moles of O2 can produce 1.8 moles of zinc oxide.

Explanation:

To determine how many moles of zinc oxide can be produced from 2.7 moles of oxygen, we need the balanced chemical reaction involving zinc and oxygen forming zinc oxide. The relevant equation is: [tex]2 ZnS + 3 O2 - 2 ZnO + 2 SO2[/tex].

From the equation, we can see that 3 moles of oxygen react to produce 2 moles of zinc oxide. Therefore, if we start with 2.7 moles of oxygen, we can use a simple ratio to find the number of moles of zinc oxide produced:

3 moles of O2 produce 2 moles of ZnO.

2.7 moles of O2 will produce (2.7 moles O2 * 2 moles ZnO / 3 moles O2) = 1.8 moles of ZnO.

Thus, 1.8 moles of zinc oxide will be produced from 2.7 moles of oxygen.

C because weight has the force of gravity pulling you down

Answer:

Explanation:triple bond

I think it is H. Boiling Point

Answer:

Boiling point

Explanation:

If you want to find the boiling point of an unknown liquid, just use beaker, a hot plate, and a temperature probe.

Boiling is characterized by the rapid transition from liquid to gaseous, with the formation of vapors (bubbles) inside the liquid. As in fusion, there is a temperature (boiling point) at which a given substance changes from a liquid to a gaseous state. This temperature is the boiling point.

In the case shown in the question above, you will need to pour the liquid into the beaker and heat it up with the hot plate. With the temperature probe, you will mark the temperature that the liquid started to boil.

There are two layers of skin, the epidermis, and the dermis.

Dermis: Is a special subcutaneous tissue. But deeper in its structures is found under the tissues that includes the muscle, bone and other structeral appearences,  within the skin.

Epidermis: This is mainly the outer layer of our skin.

The primary advantage of multiple researchers obtaining the same result is that it makes the result of the researches more reliable, and the chances of a mistake are minimized.

If only one research is made, by a single person or team, on certain thing, the result of the research can not be seen as reliable. The reason for this is that the research has not been repeated numerous times, and the chances of a mistake are much higher, thus making the research not very trustworthy.

On the other hand, if multiple researches or teams of researches are doing a research on the same thing, and they do come to the same result, than we can say that the result is much more reliable. The reason for that is that multiple different people or teams have conducted multiple researches, and the result is always the same, thus meaning that is is reliable, and the chances of a mistake are much more minimized.

Polluting the water would be the most likely way that humans would endanger them

In an ecosystem where Barton Springs inhabit polluting the water could have a damaging impact on the Barton Springs salamander.

Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.

Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.

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Answer:

P.E = 25.48 J

Explanation:

Given data:

Mass = 2 Kg

Height = 1.3 m

Potential energy = ?

Solution:

Formula:

P.E = m . g . h

P. E = potential energy

m = mass in kilogram

g = acceleration due to gravity

h = height

Now we will put the values in formula.

P.E = m . g . h

P.E = 2 Kg . 9.8 m /s² . 1.3 m

P.E = 25.48 Kg. m² / s²

 Kg. m² / s² = J

P.E = 25.48 J

Answer:

PE= 25.48 J

Explanation:

m= 2 kg

h= 1.3 m

PE= ?

m= 2 kg

h= 1.3 m

PE= ?

It will have 27 neutrons and protons because the atomic number is the same as the number of neutrons and protons.

The molar amount of gas can most likely be found by using the ideal gas law. This is because the ideal gas law states pV = nRT. P, V, and T are the pressure, volume, and temperature, which are the known variables. The R stands for the Universal Constant of Gases; also known. Therefore, the unknown is n, the number of moles (molar amount) of gas, and so you would solve for n from the law.

Answer: A) The molar amount of gas

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there is still good to live for

wavelenghts are lengths. they are measured in distances.

WaveLENGTH is a LENGTH.  As such, any unit of LENGTH can be used to describe it.

The most widely used units are:

-- meter (and its multiples, kilo, deca, centi, milli, micro, nano, etc.)

-- foot

-- inch

Answer: Option (C) is the correct answer.

Explanation:

Acids are the species which donate a proton or hydrogen ion.

Properties of acids are as follows.

Acids are sour in taste.

They turn blue litmus red.

They react with metals to form a gas.

pH of acids is less than 7.

Acids have a sticky texture.

Answer:

C. It reacts with active metals to form a gas.

Explanation:

edg. 2021

Answer:

A

Explanation:

Quantum energy

= 553.28 mmHg

According Boyle's the volume of a fixed mass of a gas is inversely proportional to pressure at constant temperature.

P1V1 =P2V2

P1 = 988 mmHg

V2 = 0.56 L

V2 = 1.0 L

P2 = ?

P2 = P1V1/V2

     = (988 × 0.56)/1

      = 553.28 mmHg

Boyle's Law explains the relationship between gas pressure and volume at constant temperature and amount of gas. By applying Boyle's Law formula, we can calculate the gas pressure in the new 1.0 L flask. The pressure in the new flask is approximately 554.86 mm Hg.

Boyle's Law: Boyle's Law states that the pressure of a gas is inversely proportional to its volume when the temperature and amount of gas remain constant.

Using Boyle's Law formula, we can calculate the new pressure in the 1.0 L flask: P1V1 = P2V2. Plugging in the values, (988 mm Hg)(0.56 L) = P2(1.0 L), we find P2 = 554.86 mm Hg.

The gas pressure in the new 1.0 L flask will be approximately 554.86 mm Hg.

Question 2: Biofuel

Question 3: Geothermal

The answer is 4. (The word auditory always has something to do with hearing or the ear.)

Hi!

Answer: 1ml of NaOH and 49 ml of Water

Concentration of NaOH to make: 0.001 M ( C1 )

Volume of NaOH to make: 50 ml ( V1 )

Concentration of NaOH in stock: 0.05 M ( C2 )

Volume of stock to use: V2

Using the formula C1 V1 = C2 V2 which is the standard formula for determining the dilutions to acquire a specified volume and concentration, we get:

0.001 M x 50 ml = 0.05 M x V2

V2 = 1 ml

So using 1ml of 0.05 M NaOH and 49 ml of Water

Final answer:

The number below each element's symbol on the periodic table refers to the atomic mass, which is different from the atomic number indicated by a subscript to the left of the symbol.

Explanation:

The number below each element's symbol on the periodic table represents the atomic mass of the element. This is different from the atomic number, which is represented as a subscript to the left of the element's symbol. Every element has a distinct symbol, typically the first one or two letters of its name, and the atomic number above each symbol in the periodic table indicates the number of protons in each element. For example, the element Carbon (C) has the atomic number 6, indicating it has 6 protons, and its atomic mass is shown beneath the symbol on the periodic table.

The correct answer is - C. Warm water is carried to cooler parts of the ocean.

The Gulf Stream is warm ocean current. It is an ocean current that originates from the Caribbean region, where it is constantly warm throughout the year. Because of that, the water is warm as well, and since the warm water is less dense, it moves on the surface. The movement is toward the higher latitudes, where this current, as a surface movement of the water, is bringing warmer water to the cooler areas, such as the eastern coast of the United States. Not only that warm water is brought to these areas, but the Gulf Stream also brings in warm and moist air masses with it, making the climate much more mild, and increasing the amount of precipitation.

Answer:

c :warm water is carried to cooler parts of the ocean!!!!

Explanation:

on study island this was right!!!! hope this helped!!;)

This is transformed into electrical energy by the spinning of the turbines.

It would become electrical energy

This is a Functional Group

Functional groups are responsible for chemical reactions of molecules.