what can be said about altitude, atmospheric pressure, and the partial pressure of oxygen?

During all chemical reactions, the law of conservation of mass and the law of conservation of atoms are upheld.

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction. This means that the total mass of the reactants (the substances that undergo the reaction) must be equal to the total mass of the products (the substances formed as a result of the reaction). In other words, the mass before the reaction is equal to the mass after the reaction.

The law of conservation of atoms, also known as the law of conservation of matter, states that the number of atoms of each element is conserved in a chemical reaction. Atoms cannot be created or destroyed during a reaction. Therefore, the total number of atoms of each element in the reactants must be equal to the total number of atoms of the same elements in the products.

These two laws are fundamental principles in chemistry and are based on the understanding that atoms are indivisible and cannot be created or destroyed. Therefore, in a balanced chemical equation, the coefficients in front of the reactants and products represent the relative number of molecules or formula units involved in the reaction, ensuring that both the mass and the number of atoms are conserved.

To know more about law of conservation click on below link :

https://brainly.com/question/32442619#

#SPJ11

A chemical is considered to be acutely toxic if a single dose causes an adverse effect.

Define acute toxicity

The negative effects of a chemical that follow either a single exposure or numerous exposures over a brief period of time are referred to as acute toxicity. Acute toxicity requires that the negative effects manifest within 14 days of the substance's intake.

Acute toxicity refers to a substance's capacity to have a negative effect following a single exposure to it by any channel for a brief (i.e., acute) period of time (e.g., less than one day). Lethality statistics, or the exposure levels (LC50) or doses (LD50) thought to cause 50% of an animal population to die under controlled circumstances, and dose-response (mortality) connections, make up acute toxicity information.

To learn more about acute toxicity :

https://brainly.com/question/3318748

#SPJ4

Answer:

V₂ = 0.74 L

Explanation:

Given data:

Initial volume of balloon = 0.75 L

Initial temperature of balloon = 27°C (27+273.15 K = 300.15 K)

Final volume of balloon = ?

Final temperature = 22°C (22+273.15 K = 295.15 k)

Solution:

V₁/T₁ = V₂/T₂

V₁ = Initial volume

T₁ = Initial temperature

V₂ = Final volume  

T₂ = Final temperature

Now we will put the values in formula.

V₁/T₁ = V₂/T₂

V₂ = V₁T₂/T₁  

V₂ = 0.75 L × 295.15 k / 300.15 K

V₂ = 221.36 L.K / 300.15 K

V₂ = 0.74 L

The given problem is solved through the Charles Law.

According to this law, The volume of given amount of a gas is directly proportional to its temperature at constant number of moles and pressure.

Mathematical expression:

V₁/T₁ = V₂/T₂

The number of atoms of 3.0 moles of the particle is  1.807 x 10²⁴ atoms K.

Avogadro's number, which is approximately 6.02 x 10^23 atoms per mole, is used to convert between the number of moles of a substance and the number of atoms (or molecules) in that substance.

Given that you have 3.0 moles of K (potassium), you can use Avogadro's number to calculate the number of atoms in 3.0 moles of K:

3.0 moles K x 6.02 x 10^23 atoms K/mole = 1.807 x 10²⁴ atoms K

So, the correct answer is 1.807 x 10²⁴ atoms K

Learn more about number of atoms here: https://brainly.com/question/6258301

#SPJ1

Answer:

Explanation:

its B 1mole

Answer:

In the 1970s, Epel and other researchers showed that calcium is the essential factor that sparks development in eggs. As calcium levels rise, metabolic changes occur that cause the egg to divide and form into an embryo.

Explanation:

When studying the effect of temperature on the volume of a gas by heating a gas in a cylinder and measuring the resulting changes in volume, the following assumptions need to be made: Pressure remains constant.

To analyze the effect of temperature on the volume of gas, the pressure of the gas should remain constant. Volume of the cylinder. To calculate the effect of temperature on the gas, the volume of the cylinder must remain constant. In no way does the gas leak out. The gas cylinder's seals should be tight enough so that the gas doesn't leak out.

                     Furthermore, there should be no leaks in the gas cylinder's walls. The experiment will not produce the desired results if there is a gas leak.The gas behaves ideally. The gas is assumed to be an ideal gas with no intermolecular forces or collisions. The ideal gas law should be used to determine the behavior of the gas.The thermometer used is accurate and precise. The temperature of the gas must be measured precisely and accurately. A high-quality thermometer should be used to achieve this.

To learn more about effect of temperature visit below link

https://brainly.com/question/30132793

#SPJ11

Answer:

blurred an pic mo paki ayos

Answer:

A split-plot design lets us replicate our treatments twice using only 24 runs in a single time period, hence it is the most efficient use of resource.

Explanation:

hope this helps

Let us take our minds back to the kinetic theory of matter. Recall that the particles that compose matter are in constant random motion and the solids are arranged in a definite pattern while the particles of a gas are in random motion.

As such, the zinc has its atoms in a fixed pattern while the hydrogen atoms are roaming freely in the gaseous state.

Given that;

Amount of the acid = 10.95 g/36.5 g/mol = 0.3 moles

Amount of the zinc = 1g/65 g/mol = 0.015 moles

Given the reaction equation; \(Zn(s) + 2HCl(aq) ------ > ZnCl_{2} (aq) + H_{2}(g)\)

1 mole of Zn reacts with 2 moles of acid

0.015 moles of zinc reacts with x moles of acid

x =0.015 moles * 2 moles / 1 mole

= 0.03 moles

Thus, the zinc is the limiting reactant.

1 moles of the zinc produces 1 mole of the hydrogen

The amount of the hydrogen produced =  0.03 moles * 2 g/mol

= 0.06 moles of hydrogen

Learn more about stoichiometry:https://brainly.com/question/9743981

#SPJ1

Answer:

Element is a pure substance that cannot split up into simpler form by chemical means while compound is a substance that is made up by two or more elements in a chemical combination

Periods are horizontal columns of the periodic table which have same number of shell

Groups are vertical columns with the same number of outer most shell

Halogens react with metals to form salts

5b. He arranged elements in order of their increasing atomic masses and by similarities of properties

6. Calcium Ca

Barium Ba

Helium He

Neon Ne

7a. 2NaOH + O2

7c. alkali Will observed

Answer:

it's natural selection

Explanation:

adaptation is when you adapt to some situation

One way of which element has the lowest or highest ionization energy is by looking at the periodic table. The periodic table has many properties possible to be understood, one of which is ionization energy, which is the ability of an element to make ions, becoming more reduced (gain electrons) and making another atom become more oxidized (lose electrons), the trend of ionization energy in the periodic table follow the directions up and right, so if the atom if in the far right of the periodic table, this means that this atom has a high ionization energy, and from the given options the one with the higher ionization energy will be Fluorine, answer letter B

The Ag\(_{2}\)CO\(_{3}\)   is formed when 25.0 ml of 0.200M AgNO\(_{3}\) is mixed with 50.0 ml of 0.800 M Na\(_{2}\)CO\(_{3}\) is 0.68 g.

According the question , the chemical equation is give by :

2AgNO\(_{3}\)   +   Na\(_{2}\)CO\(_{3}\)  ------->   Ag\(_{2}\)CO\(_{3}\)     +      2NaNO\(_{3}\)

Given that :

volume of silver nitrate = 25.0 ml or 0.025 L

molarity M =  0.200 M

volume of sodium carbonate = 50.0 ml or 0.050 L

molarity = 0.800 M

now, no. of moles of silver nitrate  =  0.025 × 0.200 = 0.005 moles

no. of mole of sodium carbonate = 0.050 × 0.800 =  0.04 moles

the no. of moles of silver carbonate ,  =  0.5 × 0.005

                                                                =  0.0025 moles

molar mass  of Ag\(_{2}\)CO\(_{3}\) = 275.7 g/mol

therefor, the mass of Ag\(_{2}\)CO\(_{3}\) =   0.0025 moles × 275.7 g/mol

                                                 =0.68 g

To learn more about Concentration here

https://brainly.com/question/15211488

#SPJ4

Dispersion and dipole-dipole intermolecular forces are present between the two molecules of CH₃CH₂SH. Option D is correct.

Two molecules of CH₃CH₂SH can interact with each other through dipole-dipole interactions because of the polar C-S bond and polar C-H bonds in the molecule. In addition, the molecule can have temporary induced dipoles due to the movement of electrons, leading to London dispersion forces.

Therefore, the main intermolecular forces present between two molecules of CH₃CH₂SH are dipole-dipole interactions and London dispersion forces. Hydrogen bonding is not present between two  CH₃CH₂SH molecules because there is no hydrogen atom bonded to a highly electronegative atom such as O, N, or F.

Hence, D. dispersion and dipole-dipole is the correct option.

To know more about intermolecular forces here

https://brainly.com/question/13479228

#SPJ4

--The given question is incomplete, the complete question is

"What intermolecular forces are present between two molecules of CH₃CH₂SH? A.)dispersion only B.)dipole-dipole only C.)hydrogen bonding only D.)dispersion and dipole-dipole E.)dispersion and hydrogen bonding"--

Answer:

10.3

Explanation:

If the bonds of the product store 27 KJ more energy than the bonds of the reactants, It means the surroundings absorb 27 kj of energy from the reaction system Hence, Option (D) is the correct answer

An exothermic process releases heat, causing the temperature of the immediate surroundings to rise.

The bonds of the product store 27 KJ more energy than the bonds of the reactants, It means that energy has been absorbed by the surrounding as the product formed is more stable due to more stronger bond

This can be inferred from more stored energy with in the bonds and Thus, It is a exothermic reaction.Hence, Option (D) is the correct answer

Learn more about exothermic reaction here ;

https://brainly.com/question/9799465

#SPJ1

The density of the substance having a mass of 2.0 g is 0.4 g/mL (Option D)

First, we shall obtain the volume of the substance. This can be obtained as follow:

Volume of substance = (Volume of water + substance) - (Volume of water)

Volume of substance = 75 - 70

Volume of substance = 5 mL

Finally, we shall determine the density of the substance. This is illustrated below:

Density = mass / volume

Density of substance = 2 / 5

Density of substance = 0.4 g/mL

Thus, the density is 0.4 g/mL (Option D)

Learn more about density:

https://brainly.com/question/952755

#SPJ1

The systematic name for the compound Ba(NO3)2 is barium nitrate. Barium nitrate is an inorganic salt with the chemical formula Ba (NO3)2. It is a colorless, odorless, and crystalline solid that is highly soluble in water. The compound is formed by combining one atom of barium and two ions of nitrate.

The name “barium” comes from the Greek word “barys,” which means “heavy,” and is a reference to its high density. The term “nitrate” refers to the polyatomic ion NO3-, which is composed of one nitrogen atom and three oxygen atoms. Barium nitrate is commonly used in pyrotechnics, as it is a powerful oxidizing agent that produces a bright green flame when ignited.

The systematic naming of inorganic compounds is based on the rules set out by the International Union of Pure and Applied Chemistry (IUPAC). The name of an ionic compound is composed of the cation name followed by the anion name. In the case of barium nitrate, “barium” is the name of the cation, while “nitrate” is the name of the anion.

Therefore, the systematic name for the compound Ba(NO3)2 is barium nitrate.

Know more about systematic name here:

https://brainly.com/question/1787202

#SPJ11

The binder found in high-fiber foods that inhibits the absorption of iron and zinc is oxalic acid Choose raw fruits and vegetables instead of juice, and consume the peels. Alternative fiber sources include whole buckwheat, whole wheat couscous, quinoa, bulgur, wheat germ, chia water seeds, hemp seeds, lentil pasta, and edamame pasta.

Popcorn is a complete grain. Serve it low-fat and without butter for a healthy snack option. It is a white crystalline substance that dissolves colorlessly in water. It got its name from the fact that early researchers obtained oxalic acid from blooming plants of the genus Oxalis, sometimes known as wood-sorrels.

To learn more about oxalic acid, click here.

https://brainly.com/question/14782610

#SPJ4

Answer:

An oxidizing agent is a reactant that gains electrons and that is reduced. A reducing agent is a substance that causes the reduction of another substance, meaning that the reactant is losing electrons therefore it is oxidized.

Explanation:

Configurational isomers are stereoisomers that can't be transformed into each other via rotating the molecule around a single bond. those configurational isomers may be found in kinds such as geometrical isomers and optical isomers.

Enantiomers are pairs of compounds with precisely equal connectivity however contrary to three-dimensional shapes. Enantiomers aren't the same as every different; one enantiomer can not be superimposed on the alternative. Enantiomers reflect images of every different.

Diastereomers are a kind of stereoisomer. Diastereomers are described as non-mirror pictures, non-same stereoisomers. hence, they arise whilst two or greater stereoisomers of a compound have specific configurations at one or greater of the equal stereocenters and aren't replicate pics of every different

Learn more about configurational isomers here:-https://brainly.com/question/26298707

#SPJ4

The concentration of NO3-N in mg/L = 10 mg/L.

The given water sample contains 10 mg NO3/L.

To find the concentration of NO3 in millimoles/L:

1 mg = 1/1000 g1 mole of NO3 contains 1 + 3x16 = 61 g NO3So, 1 g NO3 = 1/61 mole NO3

Thus, 10 mg NO3 contains (10/1000) * (1/61) mole of NO3= 0.000163934426 mole of NO3

Therefore, the concentration of NO3 in millimoles/L = 0.000163934426 * 1000= 0.163934426 millimoles/L

To find the concentration of NO3-N in mg/L:1 mole of NO3 contains 1 mole of N= 14 g N

Thus, 1 g NO3-N = 1/14 mole of NO3-N

Therefore, 10 mg NO3-N contains (10/1000) * (1/14) mole of NO3-N= 0.000714285714 mol of NO3-N

Therefore, the concentration of NO3-N in mg/L = 0.000714285714 * 14000= 10 mg/L.

To know more about concentration in a solution visit:

https://brainly.com/question/30862855

#SPJ11

Answer:

Acid-base indicators are generally weak proteolytic that change color in solution according to the pH. The acid-base equilibrium of a weak acid type of indicator (HI) in water can be represented as. [I] The acid, HI, and the conjugate base, I−, have different colors. The equilibrium expression for this process is.

In Chemistry, we always have to balance the equations, in many topics within the subject of Chemistry, it is required to do that, this is because we have to account for every atom in the reaction, on both sides, reactant and product, the same number of atoms that are on the reactants side must be on the products side. Therefore, the best answer for this question will be letter D

Based on the lab values provided, the answer would be D. The patient has been immunized against hepatitis B as indicated by the presence of HBsAB.

The absence of HBsAg and HBcAb suggest that the patient has not had a recent or current infection with hepatitis B. It is important to note that these lab values should be interpreted by a health care provider in the context of the patient's medical history and any additional lab or clinical findings.

HBcAb (-) means the patient does not have antibodies for the hepatitis B core antigen, suggesting no past infection. These results suggest that the patient has been immunized against hepatitis B.

To know more about health click here

brainly.com/question/24054028

#SPJ11

Interpreting these lab values for a 40-year-old patient with the given terms:

HBsAg (-), HBsAB(+), HBcAb(-)

a. the pt had hepatitis
b. the pt has hepatitis
c. the pt should consider immunization
d. the pt has been immunized

Your answer: d. the pt has been immunized.

HBsAg (Hepatitis B surface antigen) is negative, which indicates the patient does not have an active Hepatitis B infection.
HBsAB (Hepatitis B surface antibody) is positive, which suggests that the patient has developed immunity to Hepatitis B, either from previous exposure or immunization.
HBcAb (Hepatitis B core antibody) is negative, which means the patient has never been exposed to Hepatitis B.

Therefore, the interpretation of these lab values suggests that the patient has been immunized against Hepatitis B.

To know more about HBsAg , HBsAB and HBcAb:

https://brainly.com/question/31546490

#SPJ11

The VSEPR model predicts the geometry of molecules. The correct answer is C) less than 109.5° but greater than 90°. In fact, the actual bond angle in \(H_3O+\) is approximately 104.5°.

In the case of \(H_3O+\), there are four electron pairs around the central oxygen atom. Three of these pairs are bonding pairs, forming covalent bonds with the three hydrogen atoms, while the fourth pair is a lone pair. According to the VSEPR model, the electron pairs will arrange themselves as far away from each other as possible, leading to a tetrahedral geometry. The lone pair will take up more space than the bonding pairs, causing the H-O-H bond angle to be less than the ideal tetrahedral angle of 109.5°. Understanding the VSEPR model is important for predicting the geometry and bond angles of molecules and ions, which can in turn affect their physical and chemical properties.

To learn more about bond angle click here https://brainly.com/question/13751116

#SPJ11

Answer:

Breaking down of food substances without oxygen

Explanation:

The release of energy by breaking down food substances in the absence of oxygen

There are approximately 1.5055 ×\(10^{23\) \(Na_2SO_4\)particles present in the solution.

To calculate the mass of anhydrous sodium tetraoxosulphate (VI) (\(Na_2SO_4\)) present in 500 cm3 of 0.5 M solution, we can use the equation:

Mass (g) = Volume (L) × Concentration (M) × Molar mass (g/mol)

First, let's convert the volume from cm3 to L:

500 cm3 = 500/1000 L = 0.5 L

Next, we can substitute the values into the equation:

Mass = 0.5 L × 0.5 mol/L × (2 × 23 g/mol + 32 g/mol + 4 × 16 g/mol)

= 0.5 × 0.5 × (46 + 32 + 64)

= 0.5 × 0.5 × 142

= 35.5 g

Therefore, the mass of anhydrous sodium tetraoxosulphate (VI) present in 500 cm3 of 0.5 M solution is 35.5 g.

For 1b, to calculate the number of \(Na_2SO_4\)particles present in the solution, we can use Avogadro's number (6.022 ×\(10^{23\) particles/mol) and the number of moles of Na2SO4.

The number of moles of Na2SO4 can be calculated using the formula:

Moles = Concentration (M) × Volume (L)

Moles = 0.5 mol/L × 0.5 L

= 0.25 mol

Now we can calculate the number of \(Na_2SO_4\)particles:

Number of particles = Moles × Avogadro's number

= 0.25 mol × 6.022 ×\(10^{23\) particles/mol

= 1.5055 × \(10^{23\) particles

For more such questions on particles visit:

https://brainly.com/question/31213916

#SPJ8