Name the following alkyne:
ch3
|
ch3ch2c = cch2ch2chch3
=

The reaction between hydrochloric acid (HCl) and potassium hydroxide (KOH) generates heat. By measuring the temperature change of the reaction, the enthalpy change of the reaction can be determined. To calculate the enthalpy change of this reaction, the amount of heat released by the reaction needs to be measured.

The amount of heat that the reaction generates is proportional to the amount of substance that is consumed and the temperature change that occurs as a result of the reaction. Thus, the enthalpy change of a reaction can be calculated by measuring the heat released and the number of moles of reactant consumed. In this case, you carefully measure 50.0 mL of 1.00 M HCl and 55.0 mL of 1.00 M KOH.

This represents the amount of heat released by the reaction. The enthalpy change of the reaction can be calculated as follows:ΔH = -q/n

ΔH = -6364 J / (0.0500 moles)

ΔH = -127280 J/mole

Therefore, the enthalpy change per mole of reactant is -127280 J/mol.

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Answer:

B. endothermic reaction

Explanation:

The given solutions are arranged in order of increasing basicity and increasing acidity.

Basicity refers to the ability of a substance to donate hydroxide ions (OH⁻) and increase pH levels. Acidity, on the other hand, refers to the ability of a substance to donate hydrogen ions (H⁺) and decrease pH levels.Arrangement of the given solutions in order of increasing basicity:Least basicity: NaClCHNHNO2Overlap: CH,NH,ClGreatest basicity: NaOHTherefore, the correct order is: NaCl < CHNHNO2 < CH,NH,Cl < NaOH.Arrangement of the given solutions in order of increasing acidity: Least acidity: NaOHNaBrOverlap: NH,BrNH.NO2Greatest acidity: NaC,H,OTherefore, the correct order is: NaOH < NaBr < NH,Br < NH.NO2 < NaC,H,O.

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Answer:

B. Protons and Neutrons

Answer:

Option"B" is correct.

MARK ME BRAINLISTS

FeCl³

NaOH + H²

FeCl² + H.

al2(so4)3 h²

Answer:

2Fecl

2Na2(OH)2

AlSO4 + H

Explanation:

metal and salt gives a metalsalt and gas

The temperature of liquid in a cup with a lid changes less than in a cup without a lid.

It is well known that in a closed system, neither heat nor matter will be transferred from the system to the environment. In contrast, in an open system, energy and heat are exchanged from the system to its surroundings and vice versa.

Cup with the lid (cup A) is a closed system in this situation, but Cup without lid (cup B) is an open system. Therefore, there won't be any heat or material transfer from cup A to the system or surroundings. As a result, cup B warm up slowly.

We can conclude that cup with lids are able to keep liquid cool better than the cup without the lids. Therefore, after 10 minutes the liquid in the cup without lid will be more warmed up.

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Because it provides a very high concentration compared to what is possible with saline.

A high chloride ion concentration shifts the equilibrium position to the right due to Le Chatelier's principle.

Uses of HCL -

Hydrogen chloride is produced when many plastics are burned. Acute (short-term) inhalation exposure in humans can cause eye, nose, and respiratory tract irritation and inflammation, and pulmonary edema.

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Answer:

Thermal energy refers to the energy contained within a system that is responsible for its temperature.

The correct answer is: 1.8 moles Fe and 2.7 moles CO2.

In the balanced chemical equation, Fe2O3 + CO → Fe + CO2, the stoichiometric coefficients indicate the mole ratio between the reactants and products. According to the coefficients, 1 mole of Fe2O3 reacts with 3 moles of CO to produce 2 moles of Fe and 3 moles of CO2.

Given that 1.8 moles of Fe2O3 and 2.7 moles of CO are provided, we can determine the number of moles of each product formed. From the mole ratio, 1 mole of Fe2O3 requires 3 moles of CO, so 1.8 moles of Fe2O3 will react with (1.8 moles × 3 moles CO / 1 mole Fe2O3) = 5.4 moles of CO. Therefore, the remaining 2.7 moles of CO will not react fully and will be in excess.

Using the mole ratio, 1 mole of Fe2O3 produces 2 moles of Fe. Since 1.8 moles of Fe2O3 are consumed, the number of moles of Fe produced is (1.8 moles × 2 moles Fe / 1 mole Fe2O3) = 3.6 moles Fe.

Similarly, 1 mole of Fe2O3 produces 3 moles of CO2. Thus, the number of moles of CO2 formed is (1.8 moles × 3 moles CO2 / 1 mole Fe2O3) = 5.4 moles CO2.

Hence, the correct answer is 1.8 moles Fe and 2.7 moles CO2.

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If 51 moles of water reacts in the above chemical reaction, then 34 moles of phosphoric acid will be produced.

Stoichiometry refers to the study and calculation of quantitative (measurable) relationships of the reactants and products in chemical reactions (chemical equations).

According to this question, phosphorus oxide reacts with water to produce phosphoric acid as follows:

P₄0₁₀ + 6H₂O → 4H₃PO₄

Based on the above equation, 6 moles of water produced 4 moles of phosphoric acid.

This means that 51 moles of water will produce 51 × 4/6 = 34 moles of phosphoric acid.

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The volume change, in ft^3, 4.30456 ft³.

Mass of water (m) = 1 lb

Pressure (P) = 370 lb_f/in²

From steam table at 370 lb_f/in²

Saturated liquid specific volume (v1) = 0.01744 ft³/lb

Saturated vapor specific volume (v2) = 4.322 ft³/lb

Change in specific volume (Δv) = v2 - v1= 4.322 - 0.01744= 4.30456 ft³/lb

The specific volume change is 4.30456 ft³/lb.

The volume change, in ft³, when 1 lb of water, initially saturated liquid, is heated to saturated vapor while pressure remains constant at 370 lb_f/in² is 4.30456 ft³.

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Answer:

Don't worry school's will re-open in August 2021. ._.

Explanation:

i think everyone does. so i'll help you

Neil Bohr used the fluorescent screen and an alpha particle detector to study the structure of an atom.

An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.

Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.

The atom as a whole is neutral and stable due to presence of oppositely charged particles.

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31,146.4 Joules of heat were applied to the beaker.

The amount of heat (q) required to heat a substance is given by:

q = m × c × ΔT

where:

m = mass of the substance

c = specific heat capacity of substance

ΔT = change in temperature

For water, the specific heat capacity (c) is 4.184 J/g°C.

The mass of water (m) is 100g.

The change in temperature (ΔT) is (99°C - 25°C) = 74°C.

Therefore, the amount of heat (q) required to heat the water is:

q = 100g × 4.184 J/g°C × 74°C

q = 31,146.4 J

Therefore, approximately 31,146.4 Joules of heat were applied to the beaker.

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Answer:

it gained

Explanation:

therefore it is an anion cause it is negatively charged ion

Two isotopes of the FAKE element Sz, Average mass of  Seabreezium is equal to 199.77625 amu.

Given that Two isotopes of of Sz is given as :

Seabreezium-71 75%

Seabreezium - 76 25%

Now,

Isotopes of Seabreezium is given as:

Now,

 1st isotope = 71 75% of 271

                    = 194.44amu

  2nd isotope = 76 25% of 269

                       = 205.11 amu

Now,

Average Mass of Seabreezium = 205.11 + 194.44/2

 Average Mass of Seabreezium = 199.77625 amu

Thus, from the above conclusion we can say that, Average mass of  Seabreezium is equal to 199.77625 amu.

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Answer:

Its food for cannibals.

The pressure inside the aerosol can at 845°C is 33.8 atm. This is why it is extremely dangerous to incinerate aerosol cans, as they can explode when exposed to high temperatures.

To solve this problem, we can use the combined gas law, which relates the pressure, volume, and temperature of a gas:

(P1 x V1) / T1 = (P2 x V2) / T2

where P1, V1, and T1 are the initial pressure, volume, and temperature of the gas, and P2, V2, and T2 are the final pressure, volume, and temperature.

We are given the following:

Initial pressure P1 = 3.00 atm

Initial temperature T1 = 25°C = 298 K

We need to find the final pressure P2 at T2 = 845°C = 1118 K.

Since the can is sealed, volumes V1 and V2 remain the same.

Plugging these values into the combined gas law, we get:

(P1 x V1) / T1 = (P2 x V2) / T2

(3.00 atm x V1) / 298 K = (P2 x V1) / 1118 K

Simplifying this equation, we get the following:

P2 = (3.00 atm x V1 x 1118 K) / (298 K x V1)

P2 = 33.8 atm

Therefore, the pressure inside the aerosol can at 845°C is 33.8 atm, which is significantly higher than at room temperature. This demonstrates why it is extremely dangerous to incinerate aerosol cans, as they can explode when exposed to high temperatures.

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Answer:

The molecular weight of the unknown gas is 16.1 g/mol.

To calculate the volume of the reactor and space-time for a reversible gas phase reaction, A+2B, conducted at 540 °F and 3 atm with a feed rate of 75 lb mol/h and 40% A, and an equilibrium conversion of 75%, we need to consider the specific reaction rate and the concentration equilibrium constant.

The space-time for a reactor is defined as the volume of the reactor divided by the feed rate. To calculate the volume of the reactor, we first determine the molar flow rate of component A, which is 75 lb mol/h * 0.40 = 30 lb mol/h. Then, we divide the molar flow rate of A by the specific reaction rate to obtain the volume: Volume = 30 lb mol/h / (1.6 s * 3600 s/h) = 5.2083 ft³.

To calculate the space-time, we divide the volume by the feed rate: Space-time = 5.2083 ft³ / 75 lb mol/h = 0.0694 ft³/lb mol/h.

Therefore, the volume of the reactor is 5.2083 ft³ and the space-time is 0.0694 ft³/lb mol/h.

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Explanation:

Every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. When an equal number of atoms of an element is present on both sides of a chemical equation, the equation is balanced.

The concentration of a solution in a titration procedure can be calculated using the following formula;

CaVa = CbVb

Where;

According to this question, It took 24.61ml of 0.627m potassium hydroxide to neutralize 100ml of hydrobromic acid.

100 × Ca = 24.61 × 0.627

100Ca = 15.43

Ca = 0.154 M.

Molarity = no of moles ÷ volume

no of moles = 0.1 L × 0.154 M = 0.0154 moles

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Answer:

3 atoms

Explanation:

Answer:

Carbon in carbon dioxide gas is taken in by plants for photosynthesis.

Plants turn the carbon atom into a carbohydrate.

An animal eats the plant and uses its carbohydrates for energy.

During respiration, the animal releases carbon dioxide back into the atmosphere.

Explanation:

Answer:

Carbon in carbon dioxide gas is taken in by plants for photosynthesis.

Plants turn the carbon atom into a carbohydrate.

An animal eats the plant and uses its carbohydrates for energy.

During respiration, the animal releases carbon dioxide back into the atmosphere.

Explanation:

Diffusion, nucleation, and crystal growth are the physical processes by which atoms rearrange during phase transformations in the solid state.

Phase transformations in the solid state refer to a type of reaction that happens to the solid state of matter, which results in different properties of the substance.

It is important to note that the process of phase transformation happens through different physical processes that include evaporation, melting, sublimation, and condensation, among others.

During phase transformation in the solid state, atoms undergo a rearrangement process that changes the physical properties of the solid into a different phase. This process usually happens in a few ways, such as:

- Diffusion: This is the movement of atoms from one place to another due to the application of heat or pressure, which allows the atoms to shift positions within the solid. The diffusion process enables the atoms to break and form new bonds, resulting in phase transformation.
- Nucleation: This is a process that happens when the solid phase undergoes a change, which causes the formation of new atoms or molecules. This process typically occurs in areas where there is a higher concentration of atoms, and it takes place due to the application of heat or pressure.
- Crystal Growth: This is a process that happens when the atoms of a solid phase come together to form a new crystal structure. The crystal structure has a different arrangement of atoms, which results in different physical properties.

These processes change the physical properties of the solid into a different phase, resulting in different properties.

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0.29 moles H2O of no can be made when 35.00 moles of hno3 are consumed

Cu(s) + 8 HNO3(aq) ---------> 3 Cu(NO3) 2(aq) + 2 NO(g) + 4 H2O(l)

35g HNO3 x (1 mole HNO3 )/63g HNO3 x  (4 moles H2O)/8 moles HNO3  

=  0.29 moles H2O

A mole is defined as 6.02214076 x 1023 of any chemical unit, such as atoms, molecules, ions, or other types of units. Because there are so many atoms, molecules, or other components in any compound, the mole is a useful quantity to utilize.

The carbon-12 isotope's theoretical atomic mass is given here (6 protons and 6 neutrons). As a result, 1 mole of carbon is exactly equal to the atomic mass or weight of carbon, which is 12 grams.

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Answer:

A)strong and concentrated

Explanation:

I think. I haven't done chemistry since high school!

Answer:

Hello! Your answer would be (A)

Explanation: Hope this helped you out!