If re glazing do you cover what was forgotten(in the 2nd firing) or you fàreglaze everywhere

To determine the amount of reactant used in grams and moles, as well as the product obtained in grams and moles, the reaction equation and stoichiometry of the reaction are essential.

The theoretical yield of the product can be calculated based on the balanced equation and the stoichiometry, while the percent yield is calculated by dividing the actual yield by the theoretical yield and multiplying by 100%.

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Answer:

Try everything

1. How many moles of nitrogen gas are in 1.54x10^26 molecules? How many atoms?

2. How many molecules of water are in 3.45 moles of water?

3. How many atoms of C are in 2.00 moles of Cv6Hv12Ov6? (v means the number is below)

Explanation:

Answer:

B) is true

Explanation:

because in the 24th century that we are now people have created machine that can work without energy

The transfer of energy between systems through work is the expansion of gas in a steam engine. By doing work or by transferring heat, energy can be transferred. Therefore, option B is correct option.

Energy transfer is a phenomenon in which energy transfer from one matter to another matter. energy requirement is necessary to move nay object so work has to be done by the gas to the piston.

Heat can be transferred by three ways radiation, convention or conduction. In conduction, direct contact of two body is necessary for transfer of molecules.  Due to the conservation of energy, it is possible to synthesize a machine that would never need energy.

Therefore, the option B is correct option that is because of the conservation of energy, it is possible to have a machine that would never need energy.

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Chemicals released by a neuron onto a target with an excitatory or inhibitory effect are called neurotransmitters. Therefore, the correct answer is option C: neurotransmitters.

Neurotransmitters are chemical messengers that transmit signals between neurons and their target cells, which can be other neurons, muscle cells, or gland cells. They are synthesized and stored within the neuron's synaptic vesicles. When an action potential reaches the presynaptic neuron's terminal, it triggers the release of neurotransmitters into the synapse, the small gap between the presynaptic neuron and the postsynaptic target cell.

Neurotransmitters can have excitatory or inhibitory effects on the postsynaptic cell. Excitatory neurotransmitters promote the generation of an action potential in the postsynaptic cell, while inhibitory neurotransmitters decrease the likelihood of an action potential being generated. This excitatory or inhibitory effect is determined by the specific receptors on the postsynaptic cell that bind to the neurotransmitters.

Examples of neurotransmitters include acetylcholine, dopamine, serotonin, gamma-aminobutyric acid (GABA), and glutamate. They play crucial roles in regulating various physiological and cognitive processes, including mood, memory, muscle contraction, and pain sensation.

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Answer:

temp. of water, form of sugar

Explanation:

The thermochemical equation for the sublimation of dry ice (solid carbon dioxide) can be written as follows: CO₂(s) → CO₂(g) ΔH = +25.2 kJ/mol

In thermochemistry, endothermic process is thermodynamic process with an increase in enthalpy H (or internal energy U) of the system.

CO₂(s) → CO₂(g) ΔH = +25.2 kJ/mol, equation shows that one mole of solid carbon dioxide (CO2(s)) sublimes to form one mole of gaseous carbon dioxide (CO2(g)), and process is endothermic with magnitude of 25.2 kJ per mole of CO2 sublimed. Positive sign of ΔH indicates that process is endothermic, meaning that energy is absorbed by the system (solid CO2) from the surroundings.

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In Experiment 2, the gas produced at the negative electrode is typically hydrogen (H2).

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no. of mole = 88 ÷ ( 12 + 2(16) )

= 2 mol

mass of C = 2 × 12

= 24g ( A )

Due to thermal vibrations, an atom in a solid can move at a maximal speed of about 6.28 x 10² cm/s.

(a) The period of oscillation of a vibrating object is the time it takes for one complete cycle of motion. The frequency of the atomic vibrations is given as 1012 Hz, which means that there are 1012 oscillations or cycles per second. Therefore, the period of oscillation can be calculated using the formula:

Period = 1 / Frequency

Substituting the given value of frequency, we get:

Period = 1 / 1012 Hz ≈ 10⁻¹² seconds

So, the approximate period of oscillation of a typical atom in a solid is about 10⁻¹² seconds.

(b) The maximum speed of an atom in a vibrating motion can be calculated by multiplying its amplitude of vibration with its frequency. The amplitude of vibration is given as 10⁻⁹ cm and the frequency is given as 10¹² Hz. However, it is important to note that the motion of an atom in a solid is not simple harmonic motion, as it is subject to various forces and interactions with neighboring atoms.

Assuming simple harmonic motion, the maximum speed of the atom can be calculated using the formula:

Maximum speed = amplitude x 2π x frequency

Substituting the given values, we get:

Maximum speed = (10⁻⁹ cm) x (2π) x (10¹² Hz) ≈ 6.28 x 10² cm/s

So, the maximum speed of an atom in a solid due to its thermal vibrations is approximately 6.28 x 10² cm/s.

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The pair of cations out of which one will form a precipitate and the other will not be able to the pair that can be distinguished on the addition of sodium chloride :

1) Barium and Lead → Barium will not form a precipitate but Lead will form PbCl₂. Thus this can be distinguished.

2) Barium and Alumunium → Both will not form a precipitate.

3) Lead and Silver → Both will give precipitate so cant is distinguished.

4) Iron and Calcium → Both will not form a precipitate.

Solubility is described because the maximum amount of a substance on the way to dissolve in a given amount of solvent at a targeted temperature.

Solubility can be categorized into 3 classes. Those are soluble, partly soluble, or insoluble. A soluble solute has a solubility of extra than 1g in step with a hundred ml of solvent.

Solubility is described as the most quantity of a substance that can be absolutely dissolved in a given quantity of solvent and represents an essential idea in fields of research which include chemistry, physics, meals technological know-how, pharmaceutical, and organic sciences.

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Newton's laws of motion are stated and explained below:

First law - an object remains in its state of motion in a straight line unless acted upon by an external force. This explains why moving objects are reluctant to stop and objects are rest are reluctant to move.

Second law - the change in the momentum of a body is directly proportional to the applied force and takes place in the direction of the applied force. This explains why acceleration increases with force.

Third law - action and reaction are equal and opposite.

This means that every force has a balancing force acting in the opposite direction

Newton's laws of motion are the laws that describe the observed phenomena of objects in motion.

The laws of motion are useful in determining the various features of motion in a straight line such as velocity, acceleration, impulse, and momentum.

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Answer:

False; the correct atomic number for lithuim is 3

Explanation:

Answer to back it up

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Answer: 3p Orbitals

Explanation:

Electrons present in the 3p orbitals are farthest from the nucleus. Therefore, the electrons present in the 3p orbital will be shielded by the electrons present in the inner orbitals. Hence, 3p orbital in sulfur is most shielded from the nuclear charge".

An electron in 3p orbital of sulfur is most shielded from nuclear charge. It is true that the core electrons effectively protect the surrounding electrons from nuclear charge.

The elementary electric charge of the electron is a negative one, making it a subatomic particle. Due to their lack of known components or substructure, electrons, which are members of the first generation of the lepton particle family, are typically regarded to be elementary particles.

The atom is made up of the subatomic particles electron, proton, and neutron. The atom is made up of a core nucleus that has neutrons and protons in it. The nucleus is surrounded by electrons. Protons are positively charged, neutrons are neutral, and electrons are negatively charged.

The shielding ability of an electron in a s orbital is higher than that of an electron in a p or d orbital of the same shell. Additionally, electrons in s orbitals are less well protected by electrons in other orbitals due to their high penetrating nature.

Thus, An electron in 3p orbital of sulfur is most shielded from nuclear charge.

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The atmospheric concentration of a gas depends on its emission into the atmosphere and its rates of physical, chemical and biological removal. The time to lower the concentration of the gas to 37% of its original amount is its atmospheric lifetime.

The measurements of CO2 equivalents in parts per million CO2 is termed as atmospheric concentration. The pressure exerted by the atmosphere on the gas is called atmospheric pressure.

The atmospheric lifetime of a species mainly measures the time which is require to restore equilibrium in the atmosphere that follows a sudden decrease or increase in the concentration of the species in the atmosphere.

Emission is something which can be released, emitted or discharge.

Types of emission

Thus, we concluded that the atmospheric concentration of a gas depends on its emission into the atmosphere and its rates of physical, chemical and biological removal. The time to lower the concentration of the gas to 37% of its original amount is its atmospheric lifetime.

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Raindrops' greater size and quicker fall rate make them more efficient in removing H₂SO₄ and HNO₃ from the atmosphere than fog droplets.

However, fog and raindrops both contribute significantly to the removal of pollutants from the atmosphere and to lowering their negative effects on both human health and the environment.

H₂SO₄ produces 2H⁺ and 1mol of SO₄²⁻ ions, whereas HNO₃ can only make 1mol of H⁺ and 1mol of NO₃, sulfuric acid has a better ability to scavenge than nitric acid because it has more ions to draw in additional particles.

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The volume of oxygen at STP is approximately 295.03 cm³

To calculate the volume of oxygen at standard temperature and pressure (STP), we can use the ideal gas law equation:

PV = nRT

Where:

P = Pressure

V = Volume

n = Number of moles

R = Gas constant

T = Temperature

First, let's convert the given temperature of 47°C to Kelvin:

T1 = 47°C + 273 = 320K

We can rearrange the ideal gas law equation to solve for the volume at STP:

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

Where:

V1 = Initial volume (320 cm³)

P1 = Initial pressure (1.05 * 10⁵ Nm-²)

T2 = STP temperature (273K)

P2 = STP pressure (1.01 * 10⁵  Nm-²)

Now we can plug in the values:

V2 = (1.05 * 10⁵ Nm-² * 320 cm³ * 273K) / (1.01 * 10⁵ Nm-² * 320K)

Canceling out the units and performing the calculation, we get:

V2 = 295.03 cm³

Therefore, the volume of oxygen at STP is approximately 295.03 cm³.

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The equilibrium conversion ratio will be 5.

To solve this problem, we need to use the equilibrium constant expression for the reaction:

C2H4 + H2O ⇌ C2H5OH

K = [C2H5OH]/([C2H4][H2O])

At equilibrium, the reaction quotient Qc will be equal to the equilibrium constant K:

Qc = [C2H5OH]/([C2H4][H2O]) = K

We can express the concentrations of the reactants and products in terms of the conversion x:

[C2H4] = (1 - x)/6

[H2O] = (5 - x)/6

[C2H5OH] = x/6

Substituting these expressions into the equilibrium constant expression and simplifying, we get:

K = x/[(1 - x)(5 - x)]

At 523.15 K and 35 bar, the equilibrium constant K can be calculated using the Van't Hoff equation:

ln(K2/K1) = ΔH°/R × (1/T1 - 1/T2)

where K1 is the equilibrium constant at a reference temperature T1, K2 is the equilibrium constant at the temperature of interest T2, ΔH° is the standard enthalpy change for the reaction, and R is the gas constant.

Assuming that ΔH° is constant over the temperature range of interest, we can integrate the above equation to obtain:

ln(K2) = ln(K1) - ΔH°/R × (1/T2 - 1/T1)

At 298.15 K, the standard enthalpy change for the reaction is ΔH° = -137.2 kJ/mol. Using the given fugacity coefficients, we can calculate the equilibrium constant K1 at 298.15 K and 1 bar:

K1 = ([C2H5OH]/([C2H4][H2O]))1 bar = (0.827/0.977)/(0.16 × 0.887) = 11.48

Substituting the given temperature and pressure into the Van't Hoff equation, we get:

ln(K) = ln(K1) - ΔH°/R × (1/523.15 - 1/298.15) + ln(35/1)

Solving for ln(K) and taking the exponential of both sides, we get:

K = 128.7

Substituting this value of K into the equilibrium constant expression, we get:

128.7 = x/[(1 - x)(5 - x)]

Solving for x, we get:

x = 0.535

Therefore, the equilibrium conversion of ethylene to ethanol is 53.5% at 523.15 K and 35 bar for an initial steam-to-ethylene ratio of 5.

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Answer:

2 - B, 5 - D, 6 - A

Explanation:

2 - Penicilin was actually discovered on accident!

5 - Microbes were discovered around the mid-1600s

6 - Choice A seems to be correct here, noting that the answers of C and D are marked out and B seems a bit far-fetched (from my current knowledge)

Option a is correct: Alloantibodies to blood-vessel endothelium on solid organ grafts are specific for HLA class I and class II antigens.

Alloantibodies are antibodies produced by an individual's immune system in response to foreign antigens from another individual of the same species (allogeneic). In the context of solid organ transplantation, alloantibodies can target the endothelium (inner lining) of blood vessels in the transplanted organ.

HLA (Human Leukocyte Antigen) class I and class II antigens are major histocompatibility complex (MHC) molecules that play a crucial role in the immune system's recognition of self and non-self cells. These antigens are highly polymorphic and vary between individuals, making them important targets for alloantibodies.

Therefore, option a is correct: Alloantibodies to blood-vessel endothelium on solid organ grafts are specific for HLA class I and class II antigens.

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Answer:

It is important to know the three different types of rocks because they contain clues about what the Earth was like in the past. Different rocks form under only certain conditions and can tell us something important about the past.

The study of rocks is very important to study the geography of rocks. To understand the Types of soil and rocks on the earth's surface.

There are three different types of rocks igneous, metamorphic and sedimentary rocks. Igneous rocks are formed from melted rock. Sedimentary rocks are formed from slit and animal skeletons.

Metamorphic rocks are formed by changing heat and pressure underground. Rock and mineral are important to understand the material, structure and system of the earth.

The study of rocks help in science and geography. Basalt is used in building rocks. Granite is used to form a monuments. Pumice is used as a scrubbing material. Slate is used for roofing material of roofs.

Therefore, The study of rocks is very important to study the geography of rocks. To understand the Types of soil and rocks on the earth's surface.

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Answer:

I Hope it help you and Please mark me as Brilliant

Explanation:

Consider this balanced chemical equation:

2 H2 + O2 → 2 H2O

We interpret this as “two molecules of hydrogen react with one molecule of oxygen to make two molecules of water.” The chemical equation is balanced as long as the coefficients are in the ratio 2:1:2. For instance, this chemical equation is also balanced:

100 H2 + 50 O2 → 100 H2O

This equation is not conventional—because convention says that we use the lowest ratio of coefficients—but it is balanced. So is this chemical equation:

5,000 H2 + 2,500 O2 → 5,000 H2O

Again, this is not conventional, but it is still balanced. Suppose we use a much larger number:

12.044 × 1023 H2 + 6.022 × 1023 O2 → 12.044 × 1023 H2O

These coefficients are also in the ratio of 2:1:2. But these numbers are related to the number of things in a mole: the first and last numbers are two times Avogadro’s number, while the second number is Avogadro’s number. That means that the first and last numbers represent 2 mol, while the middle number is just 1 mol. Well, why not just use the number of moles in balancing the chemical equation?

2 H2 + O2 → 2 H2O

is the same balanced chemical equation we started with! What this means is that chemical equations are not just balanced in terms of molecules; they are also balanced in terms of moles. We can just as easily read this chemical equation as “two moles of hydrogen react with one mole of oxygen to make two moles of water.” All balanced chemical reactions are balanced in terms of moles.

Example 8

Interpret this balanced chemical equation in terms of moles.

P4 + 5 O2 → P4O10

Solution

The coefficients represent the number of moles that react, not just molecules. We would speak of this equation as “one mole of molecular phosphorus reacts with five moles of elemental oxygen to make one mole of tetraphosphorus decoxide.”

Test Yourself

Interpret this balanced chemical equation in terms of moles.

N2 + 3 H2 → 2 NH3

Answer

One mole of elemental nitrogen reacts with three moles of elemental hydrogen to produce two moles of ammonia.

Answer:

100.0869 g/mol

The molar mass of CaCO3 is 100.0869 g/mol. We need to add the molar masses of calcium (40.078 g/mol), carbon (12.0107 g/mol) and three oxygen atoms

Explanation:

Answer:

C po answer ko

Explanation:

thznk chou

There are approximately there are 0.000706 moles of chlorine gas in Tank B.

Tank A:

We can use the ideal gas law to find the number of moles of gas in Tank A.

PV = nRT

where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature.

Since the tanks are sealed, we can assume that the pressure is constant and equal to atmospheric pressure. We also know the temperature (273 K) and the volume of the tank is not given, but we don't need it for this calculation.

Rearranging the ideal gas law to solve for n, we get:

n = PV/RT

Plugging in the values for Tank A:

n = (1 atm)(0.009 m^3)/((0.08206 L*atm/mol*K)(273 K))

n = 0.000339 mol

Therefore, there are 0.000339 moles of argon gas in Tank A.

Tank B:

Using the same method as above, we can find the number of moles of chlorine gas in Tank B.

n = PV/RT

Plugging in the values for Tank B:

n = (1 atm)(0.009 m^3)/((0.08206 L*atm/mol*K)(273 K))

n = 0.000706 mol

Therefore, there are 0.000706 moles of chlorine gas in Tank B.

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Answer:

C7H16 + 11 O2 → 7 CO2 + 8 H2O

This is an oxidation-reduction (redox) reaction:

7 C-16/7 - 44 e- → 7 CIV (oxidation)

22 O0 + 44 e- → 22 O-II (reduction)

C7H16 is a reducing agent, O2 is an oxidizing agent.

Reactants:

C7H16

O2

Names: Dioxygen source: wikidata, accessed: 2019-09-07, Oxygen source: ICSC, accessed: 2019-09-04source: wikidata, accessed: 2019-09-07, Oxygen (liquefied) source: ICSC, accessed: 2019-09-04

Appearance: Odourless compressed gas source: ICSC, accessed: 2019-09-04; Liquefied gas. colourless-to-blue extremely cold liquid source: ICSC, accessed: 2019-09-04

Products:

CO2

Names: Carbon dioxide source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04source: NIOSH NPG, accessed: 2019-09-02, {{plainlist| source: wikipedia, accessed: 2019-09-27, CO2 source: wikidata, accessed: 2019-09-02

Appearance: Colorless gas source: wikipedia, accessed: 2019-09-27; Odourless colourless compressed liquefied gas source: ICSC, accessed: 2019-09-04; Colorless, odorless gas. [Note: Shipped as a liquefied compressed gas. Solid form is utilized as dry ice.] source: NIOSH NPG, accessed: 2019-09-02

H2O – Water, oxidane source: wikipedia, accessed: 2019-09-27

Other names: Water (H2O) source: wikipedia, accessed: 2019-09-27, Hydrogen hydroxide (HH or HOH) source: wikipedia, accessed: 2019-09-27, Hydrogen oxide source: wikipedia, accessed: 2019-09-27

Appearance: White crystalline solid, almost colorless liquid with a hint of blue, colorless gas source: wikipedia, accessed: 2019-09-27

Search by reactants (C7H16, O2)

1 O2 + C7H16 → H2O + CO2

2 O2 + C7H16 → H2O + CO

3 O2 + C7H16 → H2O + CO2 + CO

4 O2 + C7H16 → H2 + CO2

Search by products (CO2, H2O)

12345678910...

1 HCl + CaCO3 → H2O + CO2 + CaCl2

2 HCl + NaHCO3 → H2O + CO2 + NaCl

3 O2 + CH4 → H2O + CO2

4 NaHCO3 → H2O + CO2 + Na2CO3

5 H2SO4 + KMnO4 + (COOH)2 → H2O + CO2 + K2SO4 + MnSO4

6 O2 + C3H8 → H2O + CO2

7 H2SO4 + K2CO3 → H2O + CO2 + K2SO4

8 O2 + C2H6 → H2O + CO2

9 CH3COOH + NaHCO3 → H2O + CO2 + CH3COONa

10 HCl + Na2CO3 → H2O + CO2 + NaCl

12345678910...

Search by reactants (C7H16, O2) and by products (CO2, H2O)

1 O2 + C7H16 → H2O + CO2

2 O2 + C7H16 → H2O + CO2 + CO

Explanation:

Answer: simple distillation is used to separate substances in mixtures with widely disparate boiling points, whereas fractional distillation is used for mixtures containing chemicals with similar boiling points.

Explanation:

Answer: Answer is below <3

Explanation: A mutant protein is the protein product encoded by a gene with mutation. Mutated protein can have single amino acid change (minor, but still in many cases significant change leading to disease) or wide-range amino acid changes by e.g. truncation of C-terminus after introducing premature stop codon.

A number of mutant proteins, including huntingtin, atrophin1, the androgen receptor, ataxin1, ataxin2, ataxin3, alpha 1A subunit of the Cav2.

It's sunny in new york, but it is cool, we will expect to find lizard under a rock or in a hole in the ground, where temperature is more than outside.

Lizards are not easily survive in the winter season as they are cold blooded animal, so their body will not active in the winter season.

During the winter season or in the cold weather, lizards will go to the places where they feel less cooling. And these places be like inside the rocks, under a hole, under the ground, in the trunks of trees, etc. due to high temperature.

Hence, options (1) and (4) are correct.

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