the astronaut's suit maintains carbon dioxide levels close to 0%. what is the survivable level of co2 for humans that will have minor symptoms?

S is more metallic than Cl and Al is more metallic than indium and As is more metallic than Br.

In a period when we move across, from left to right then there will be an increase in electronegativity and also there will be an increase in non-metallic character of the elements.

As sulfur (S) belongs to group 16 element and chlorine (Cl) belongs to group 17 element. Thus, sulfur (S) is more metallic in nature than chlorine.

Therefore, chlorine (S) is less metallic than chlorine (Cl).

Both indium (I) and aluminium (Al) belongs to group 13 elements. And, when we move down in the group then there will be an increase in non-metallic character of the elements. As indium belongs to group 13 and period 5 wherein aluminium belongs to group 13 and period 3.

Thus, aluminium (Al) is more metallic than indium (In).

Arsenic (Ar) belongs to 15 element and bromine (Br) belongs to group 17 element. Thus, arsenic is more metallic than bromine.

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The distinguish between each pair of compounds using high- resolution mass spectrometry by the exact mass rather than nominal mass are utilizes to measure the compound.

The mass spectrometry is involves the following steps :

Mass spectrometry is the analytical method useful for the calculating the mass to charge ratio ( m / z ). the mass spectrometry is based on the newton's second law and the momentum.

Thus, the mass spectroscopy is method to measure the molecular mass of the compound and indirectly helps examine the isotopes and based on the newton's second law .

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1.56% is percentage of the original sample would be left after 108 days.

What is Half life?

Half-life, in radioactivity, is the amount of time needed for half of a radioactive sample's atomic nuclei to decay (change spontaneously into other nuclear species by emitting particles and energy), or, alternatively, the amount of time needed for a radioactive material's rate of disintegrations per second to decrease by half.

A sample that contained 8 g of cobalt-60 initially would contain only 4 g of cobalt-60 after that time, and it would release only half as much radiation.

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the distinct shapes predicted by theVSEPR theory are based on the attraction of electrons for each other is true

vsepr theory

Whether they are in bond pairs or lone pairs, electron pairs reject one another, according to the valence-shell electron-pair repulsion (VSEPR) theory. In order to reduce repulsion, electron pairs will disperse as far as they can from one another. In addition to concentrating on electron pairs, VSEPR also pays attention to electron groups as a whole. An electron pair, a lone pair, a single unpaired electron, a double bond, or a triple bond on the central atom can all be considered electron groups. The electron bond pairs and lone pairs on the central atom will aid us in predicting the structure of a molecule using the VSEPR theory.

The various shapes predicted by the VSEPR theory are based on the attraction of electrons for each other. In carbon dioxide, four electrons are shared with each oxygen atom. The form of the molecule OCl2 is linear. The molecule GeF2 shows resonance because it has two potential Lewis structures.

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The characteristic reaction of carboxylic acid derivatives  is nucleophilic acyl substitution.

the carboxylic acid contains c=o bonds and at the starting there is a nucleophilic attack on a electrophilic carbonyl atom which forms a tetrahedral alkoxide intermediate.

now, the alkoxide negative charge give stability by transferring the y leaving group which allows the c=o bond to reform and which make a new acyl compound.

[tex]R-CO-Y+:Nu^{-} \rightarrow R-C-(O)(Y)(Nu)[/tex]

now, the above reaction is considered substitution because y group of the carboxylic acid derivative get exchanged with nucleophile.

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A client is investigating the function of oxygen, oxygen is an element that makes up 65% of the human body and is found in fat and carbohydrates.

Role of oxygen in human body

Due to the importance of oxygen in sustaining life on Earth, oxygen is the most important element for all living things.

Some estimates says that, oxygen is required for 90% of our biochemical and metabolic processes.

For breathing, we inhale oxygen and exhale carbon dioxide. Hemoglobin present in blood transports oxygen from the lungs to all of the body's cells.

The nose has tiny hairs inside it that clean and filter the air before it reaches our lungs, hence it is also strongly advised that we should breathe through our nose.

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After adding 470.0 mL of an 8.8 times 10^-5 mM silver(II) oxide (AgO) solution to a reaction flask the chemist will get 5.1 μg of silver (II) oxide the chemist has added to the flask.

Step 1: Presented data

470.0 mL is the solution's volume (V) (0.4700 L)

Solution concentration (C): 8.8 105 mM (8.8 108 M).

Step 2: Determine the moles (n) of additional AgO.

The following expression will be used.

n = C × V

n = 8.8 108 mol/L 0.47 liters

n = 4.1 × 10⁻⁸ mol

Calculate the mass (m) equal to 4.1 10⁸ moles of AgO in step three.

AgO has a molar mass of 123.87 g/mol.

5.1 106 g = 4.1 10⁸ mol x 123.87 g/mol

Fourth step: Change "m" to micrograms

We'll take 1 g = 10⁶ g as our conversion factor.

5.1 × 10⁻⁶ g × 10⁶ μg/1 g = 5.1 μg

The complete question is:

A chemist adds 470.0 mL of an 8.8 times 10^-5 mM silver(II) oxide (AgO) solution to a reaction flask. Calculate the mass in micrograms of silver(II) oxide the chemist has added to the flask. Round your answer to 2 significant digits.

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A double replacement reaction occurs when fragments of two ionic compounds shift places to form two new compounds (also known as a double displacement, exchange, or metathesis reaction).

What is Double Displacement Reaction?

A twofold displacement reaction is one in which one reactant is partially replaced by another.

Following is a summary of double displacement reactions:

AD = CB + CD + AB

The ions in two reactant ionic compounds are switched out for the same ions in two new product compounds during a double replacement process.

A double replacement reaction occurs when two reactants switch cations or anions to form two new products.

Other names for double replacement processes include metathesis reactions and double displacement reactions.

Precipitation, gas generation, and neutralization are examples of double replacement reactions.

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Dispersion forces , dipole-dipole interactions and hydrogen bonds this forces may exist between particles in molecular crystals.

The least powerful intermolecular force is the London dispersion force. When the electrons in two nearby atoms occupy positions that cause the atoms to temporarily form dipoles, the consequence is the London dispersion force, a transient attractive force. The term "induced dipole-induced dipole attraction" is frequently used to describe this effect.

A hydrogen bond is an attraction that is predominantly electrostatic between an electronegative atom that is the hydrogen bond acceptor and an electronegative atom that is covalently attached to a greater electronegative "donor" atom or group.

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Answer:

Acetyl CoA

Explanation:

The pyruvate molecules undergo reactions that convert the three carbon pyruvate to a two carbon acetyl CoA and an one carbon carbon dioxide. The acetyl-CoA molecules are then used as the initial inputs for the citric acid cycle, as they are combined with oxaloacetate.

For an octahedral complex, the coordination number of the central copper ion is six and it is in the +2 oxidation state.

We know that an octahedral complex is one in which there are six ligands that are attached to the central metal ion. The coordination number has to do with the number of the ligands that could be found around the central metal ion.

Copper is found in the + 2 states when it forms complexes that are octahedral in nature ad the coordination number of the central copper ion in the complex is always six.

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The report targeted to managers is condensed into an executive summary, also known as that of the epitome, Executive Summary, management summary, or management overview.

The fundamental line of reasoning for most recommendation reports would include a description of the problem, the solution, the advantages of the solution, and any particular recommendations (if not already made clear in the solution section).List of contents.

A transmittal letter, a title page, a summary of some kind, a table of contents, and listings of figures and/or tables are examples of common front matter elements.

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Eutrophication causes a decrease in the amount of oxygen available to aquatic life.

What is Eutrophication?

Eutrophication sets off an ecosystem chain reaction starting with algae and vegetation in abundance. This lowers the pH of seawater, a process known as ocean acidification.

Eutrophication occurs when nutrients are abundant, and visible algal blooms grow densely. Eventually, these algae die and decompose, absorbing oxygen and reducing oxygen levels in the water. Eutrophication can also lead to a shift in species composition towards faster-growing algal species and from long-lived macroalgae to more wild species.

Thus, Eutrophication causes a decrease in the amount of oxygen available to aquatic life.

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The total number of protons in this atom is 79 because an atomic number of an element is equal to the number of protons. Here, the atomic number is 79 after adding the given electronic configuration.

What are Protons?

Every atom has a proton, a subatomic particle, in its nucleus. The particle possesses an electrical charge that is positive and opposite to the electrons.

What is Atom?

A nucleus plus one or more electrons bound to the nucleus make up an atom. The quantity of protons or electrons in an element's atom determines how different it is from other similar elements. The atomic number of an element, which serves as its primary identification, is the sum of its protons or electrons.

What is Electronic configuration?

The arrangement of electrons in atomic or molecular orbitals within an atom, molecule, or other physical structure is known as the electron configuration.

Hence, the total number of protons in this atom is 79, after adding 2 + 8 + 18 + 32 + 18 + 1.

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The following compounds' SrF2 will have the highest percentage of ionic character in its bonds, according to trends in electronegativity in the periodic table.

Describe Electronegativity?

The propensity of the given element to draw the shared electron during the formation of a chemical bond is referred to as electronegativity. It depends on the atomic number of the target atom as well as how far away the shared electron is from the charged atom's nucleus.

Ionic character: An object's ionic character is determined by how much the electronegativity of two covalently connected atoms differs from one another.

The most ionic property of all is found in BaCl2.

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On the basis of the electronegativity trends in the periodic table, SrF2 of the following  given compounds should have the greatest % ionic character in its bonds.

While forming a chemical bond the tendency of the given element to attract the shared electron is known as electronegativity. It is affected by the atomic number of the given atom as well as the distance at which the shared electron resides from the charged nucleus of the atom.

The ionic nature is determined by how much the electronegativity of two covalently bound atoms differs from one another.

BaCl2 has the greatest of all ionic character.

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Since this indicator's pKa is 5, it will change color around pH 5.

To determine the approximate pH, use the cologarithm or negative logarithm of the H+ ion concentration.Similar to water, a solution with a pH of 7 is neutral. While a basic solution has a pH above 7, an acidic solution has a pH below 7.

By adding a chemical whose color depends on the pH, one of the simplest ways to figure out a solution's pH is to do so. These substances are known as acid-base indicators, or just indicators. The most popular acid-base indicator is probably litmus. if situated in comparatively.

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1 atm (275 mL) equals 3.10 atm V2, where V2 is equal to 275 mL divided by 3.10, and P1V1 equals P2V2. The calculation is 1(275) = 3.1 (88.71) = 275.

The ideal gas equation can be changed to demonstrate that the pressure of a sample of gas is directly proportional to the amount of gas present, volume, and temperature is held constant: P=n(RTV)=n×const

Volume and temperature are related as follows: V1 / T1 = V2 / T2, where V1 and T1 represent the beginning volume and absolute temperature, and V2 and T2 represent the final volume and absolute temperature (the Kelvin temperature, not the Celsius temperature).

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[tex]7.53 \times 1023 \: molecules[/tex]

[tex] \: \: 1.25 \: mol \: bf3 \: contains \: 7.53 \times 1023 \: molecules[/tex]

The new pressure be if pressure is kept constant, to compress nitrogen is 3 atm.

Boyle's law is significant because it explains how gases behave. It explains with certainty that the relationship between gas pressure and volume is inverse. So, when you exert pressure on gas, the volume decreases and its pressure increases.

P1V1 = P2V2

P1 and V1 are initial pressure and volume.

P2 and V2 are final pressure and volume.

P1 = 1 atm

V1 = 750 mL

P2 = ?

V2 = 500 mL

Putting values

2 * 750 mL = P2 * 500 mL

P2 = 3 atm

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There are two types of chemical compound one is covalent compound and other is ionic compound, covalent compound formed by sharing of electron and ionic compound formed by complete transfer of electron. Therefore, the given statement is Slightly true.

Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.

An ionic compound is a metal and nonmetal combined compound.  Ionic compound are very hard. They have high melting and boiling point because of strong ion bond.

The formula of an ionic compound starts with a metal and that of a molecular compound starts with a nonmetal. The statement is Slightly true.

Therefore, the given statement is Slightly true.

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When the sodium cation concentration was increased by a factor of 10. a s2- ion-selective electrode measured a decrease of 29.58 mv when the sulfide concentration increased by a factor of 10 because of option I and IV.

Some reactive electrodes consist of zinc, copper, lead, and silver. An inert electrode is a form of electrode which does not participate in a chemical reaction. some normally used inert electrodes include platinum, gold, graphite(carbon), and rhodium.

Electrodes are critical additives of electrochemical cells. They shipping produced electrons from one 1/2-cellular to any other, which produce an electrical charge. This fee is based off a widespread electrode gadget (SHE) with a reference ability of zero volts and serves as a medium for any cellular potential calculation.

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Disclaimer:- your question is incomplete, please see below for the comlete question.

A Na ion-selective electrode increased in voltage by 59.16 mV when the sodium ion activity increased by a factor of 10. An S2 ion-selective electrode measured a decrease of 29.58 mV when the sulfide activity increased by a factor of 10. Why?

I. For cations, the measured potential increases by a factor of n x 59.16 mV for every 10-fold change in the activity of the cation, where n is the charge on the cation.

II. For anions, the measured potential decreases by a factor of n x 59.16 mV for every 10-fold change in the activity of the anion, where n is the charge on the anion.

III. For cations, the measured potential increases by a factor of 59.16 mV/n for every 10-fold

change in the activity of the cation, where n is the charge on the cation.

IV. For anions, the measured potential decreases by a factor of 59.16 mV/n for every 10-fold change in the activity of the anion, where n is the charge on the anion.

Select one:

a. I and IV

Ob. III and IV

c. II and III

d. I and II

e. None of the statements explains the behavior.

The temperature of mixed water is 45.230C under the conditions stated.

T(final) = (m1 T1 + m2 T2) / (m1 + m2), at which m1 and m2 are indeed the weight training of the water in the initial and 2nd canisters, T1 is the water temperature in the first container, and T2 is the water temperature in the second container, can be used to determine the final the water's temperature mixture.

The given parameters;

mass of the cold water, m = 100 g

initial temperature of the water, t₁ = 22.6 ⁰C

initial temperature of the hot water, t₂ = 75.4⁰ C

75 g is the hot water's mass.

specific heat capacity of water is 4.184 J/g⁰C

The mixture's final temperature is estimated as follows;

Based on the principle of conservation of energy;

Heat received by the ice water equals heat lost by the hot water.

mcΔθ₂ = mcΔθ₁

75 x 4.184 x (75.4 - T) = 100 x 4.184 x (T - 22.6)

75 x (75.4 - T) = 100 x (T - 22.6)

(75.4 - T) = 1.333(T - 22.6)

75.4 - T = 1.333T - 30.1258

75.4 + 30.1258 = 1.333T + T

105.5258 = 2.333T

T = 45.2318⁰C

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An electric field is produced when high voltage is applied to capacitor plates, deflecting cathode rays. The negatively charged electrons are directed away from the negatively charged plate and toward the positively charged plate when a cathode ray is transmitted through this electric field.

Electricity is the set of physical phenomena associated with the presence and motion of matter that has a property of electric charge. Electricity is related to magnetism, both being part of the phenomenon of electromagnetism, as described by Maxwell's equations

Voltage, current, and resistance are the three most fundamental elements of electricity. Voltage is comparable to the force that forces water through a hose. It is expressed as volts (V). CURRENT is comparable to the hose's diameter.

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Hydrogen gas reacts with alkynes in the presence of a Lindlar catalyst by syn addition of hydrogen, resulting in a cis alkene product. A Lindlar catalyst is "poisoned" (often with lead) such that the reaction stops primarily at the alkene product.

The atomic number of arsenic (As), which possesses 35 protons, 42 neutrons, and 33 electrons, is 33.

However, we must travel back to 400 B.C. ancient Greece to understand the word "atom." Democritus, a renowned philosopher, recommended the use of the Greek word atomos, which means uncuttable. So, he said, all matter could someday be reduced to discrete, tiny particles, or atomos. Any subatomic particle of matter that has at least one proton is considered to be an atom. The atoms include, for instance, hydrogen (H) and neon (Ne).

Atoms are made up of a nucleus in the middle that is surrounded by protons, neutrons, and electrons. During the fission process, uranium is broken up into smaller atoms, producing new atoms. The creation of atoms in enormous numbers can be seen in the Big Bang and Supernova phenomena.

Up until the 1800s, this notion of tiny, inseparable pieces of matter remained. The contemporary atomic idea was initially started by the eminent chemist John Dalton (1766–1844). Around 400 B.C., a renowned philosopher by the name of Democritus proposed the Greek word atomos, which implies uncuttable. In the end, all matter could be reduced to distinct, tiny particles, or atomos, he said. This Greek term is where the word "atom" originated.

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Answer:

It would become weaker.

Explanation:

If an electron was promoted to the antibonding orbital, the bond order would become zero and the molecule would split apart.

One of the most important use of cobalt-60 is treating cancer as it produces gamma rays.

In a teletherapy unit as a source of intense gamma radiation for the treatment of a variety of cancers an external sealed source of cobalt-60 is used. Cobalt-60 is also used as a medical tracer. A material that is introduced into the body to make possible the observation of chemical, physical or biological processes in the body is known as medical tracer.

Cobalt-60 emits two high energy gamma rays, making cobalt-60 both an internal and external hazard. Ingestion is the primary exposure pathways of concern which includes (drinking water and fish consumption), and exposure by inhalation and external exposure.

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Answer:

Explanation:

b

The mass of aluminum oxide was initially present was 372.8 g. Start with the balanced chemical equation for this Synthesis or combination reaction (4Al+3O2→2Al2O3).

The percent yield of the reaction is not 100%, but 85.3%. This means that you will need to use more aluminum oxide to produce this much aluminium.

Percent yield is defined as the actual yield of the reaction by the theoretical yield.

% yield = actual yield/theoretical yield×100

You know that the reaction's actual yield is 318 g of aluminium, which means that the theoretical yield must be

85.3%=318g/theoretical yield×100

theoretical yield=318g⋅100/85.3=372.8g

This means that you need to find how many grams of aluminum would theoretically produce 372.8 g of aluminum oxide.

The most eight types of chemical reactions are :

Decomposition reaction,Combination reaction,Combustion reaction,,Single displacement reaction,Double displacement reaction,Precipitation reaction, and Redox reaction.

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