A new baby weighs 7.8lb what is it’s mass in kg (453.6g=1lb)?

Answer:

When you bake a cake the smell changes after it has been baked and it counts as a chemical change

Explanation:

Answer:

A) It shows how electrons are distributed in the Shells of an Iron atom.

Explanation: Took the test on Edge

To see the number of atoms of an element in a given molecule we need to multiply stoichiometry to the number that is written on the foot of the element that is stoichiometry. Therefore, the correct option is option A.

Atom is the smallest particle of any element, molecule or compound. Atom can not be further divided. Atoms contains nucleus in its center and electron that revolve around the atom in fixed orbit.

In the nucleus, proton and neutron are present. Electron has -1 charge while proton has +1 charge. Neutron is neutral that is it has no charge. So overall the charge of nucleus is due to only proton, not by neutron. The given model shows how electrons are distributed in the shells of an iron atom.

Therefore, the correct option is option A.

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Answer:

maybe 16?

Explanation:

Answer: No.

Explanation: A negative integer can only be made with 2 negative integers or 1 positive and 1 negative integer.

The responding variable refers to the variable that changes as the independent variable is being manipulated. In this case, the responding variable is the number of paper clips attracted by the magnet.

An experiment must include a dependent (responding) variable and an independent variable. As the independent variable is manipulated during the experiment, the dependent (responding) variable changes accordingly.

In this case; the independent variable is temperature while the dependent (responding) variable is the number of paper clips attracted by the magnet.

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Answer:

A trait is a specific characteristic of an organism. Traits can be determined by genes or the environment, or more commonly by interactions between them. The genetic contribution to a trait is called the genotype.

Explanation:

if not then its a feature,

To predict the shape of phosphine, we will use the Valence Shell Electron Pair Repulsion (VSEPR) theory.VSEPR theory states that shape of Phosphine molecule is a trigonal pyramidal with a bond angle of 93.5°.

the electron pairs in the valence shell of an atom repel one another and will try to move away from each other as far as possible. As a result, this creates different geometrical shapes of molecules.To begin with, we first have to count the total number of valence electrons in Phosphine

Phosphorus has five valence electrons, while hydrogen has one valence electron each. Thus, the total number of valence electrons in Phosphine is eight electrons.In Phosphine, three hydrogen atoms bond with the central phosphorus atom. Each of these bonds is formed by a pair of electrons shared between the phosphorus and hydrogen atoms.

Therefore, there are three bonding pairs of electrons around the central phosphorus atom. Since Phosphinehas eight valence electrons, one pair of electrons will remain un-bonded and will form a lone pair of electrons around the phosphorus atom.

Therefore, the shape of Phosphine molecule is a trigonal pyramidal with a bond angle of 93.5°.

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Hydrogen sulfide (H2S) is a gas that undergoes pH-dependent dissociation in water to form the bisulfide ion (HS-). The equilibrium constant, denoted as K????1, describes the extent of this dissociation.

The equilibrium between hydrogen sulfide (H2S) and the bisulfide ion (HS-) in water is represented by the chemical equation: H2S ⇌ HS- + H+.

The equilibrium constant, K????1, is defined as the ratio of the concentrations of the products (HS- and H+) to the concentration of the reactant (H2S), each raised to their respective stoichiometric coefficients. The value of K????1 is determined by the temperature and is specific to this particular equilibrium.

The value of K????1 indicates the position of the equilibrium. If K????1 is large, it means that the dissociation of H2S to form HS- and H+ is favored, and the concentration of HS- will be relatively high compared to H2S. On the other hand, if K????1 is small, it indicates that the undissociated H2S is predominant.

The equilibrium constant K????1 allows us to quantitatively understand the extent of dissociation of H2S in water and the relative concentrations of H2S, HS-, and H+ in the solution.

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Answer:

The first one has 5 valence electrons, and the second has 7. (This can be counted by counting the amount of black dots on the biggest circle). Since 7 > 5, it would be easier for the second one to gain one (so that it completes it's valence shell) so the answer is the second one.

If we label the reactions 1 - 3 in order as they appear in the image attached.

Reaction 1 - The yield is increased by decreasing the volume

Reaction 2 - The yield is increased by decreasing the volume

Reaction 3 - The yield is increased by increasing the volume

We know that when a constraint is imposed on a reaction system that is in equilibrium, it is usual that the equilibrium position of the system would shift. The reason why the equilibrium position would shift is so that the constraint that is on the system can be annulled and then a new position of equilibrium would become established.

We would now look at the reactions. We know that when we increase the volume of the reaction, the equilibrium position would shift to the direction in which the volume is lesser. Similarly, if the volume is decreased, the direction to which the equilibrium position would shift would be that of a higher volume.

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Answer:

It would take approximately 81.65 kJ (or 81,650 J) of heat to convert 230.0g of ice at -10C to water at 0C.

Explanation:

To calculate the amount of heat needed to convert ice at -10°C to water at 0°C, we need to consider two steps:

1. Heating the ice from -10°C to 0°C (heat required to raise the temperature of ice)

2. Melting the ice into water at 0°C (heat required to change the state of ice)

Let's first calculate the heat required for step 1:

Q1 = m × c × ΔT

where Q1 is the heat required, m is the mass of the ice, c is the specific heat capacity of ice, and ΔT is the change in temperature.

The specific heat capacity of ice is 2.09 J/g°C, and ΔT is (0°C - (-10°C)) = 10°C.

So, Q1 = 230.0 g × 2.09 J/g°C × 10°C = 4827 J

Now, let's calculate the heat required for step 2:

Q2 = m × Lf

where Q2 is the heat required, m is the mass of the ice, and Lf is the latent heat of fusion of ice.

The latent heat of fusion of ice is 334 J/g.

So, Q2 = 230.0 g × 334 J/g = 76820 J

Therefore, the total amount of heat needed to convert 230.0g of ice at -10C to water at 0C is:

Qtotal = Q1 + Q2 = 4827 J + 76820 J = 81647 J

Therefore, it would take approximately 81.65 kJ (or 81,650 J) of heat to convert 230.0g of ice at -10C to water at 0C.

a) What is the mean value at 30% fraction saturation for 500 binding sites?

For 500 binding sites, the mean value (µ) at 30% fractional saturation (p = 0.3) can be calculated as:µ = where, n = total number of binding sites in hemoglobin (in this case, 500)p = fractional saturation (in this case, 0.3)

So,µ = 500 × 0.3 = 150

Oxygen molecules bound to hemoglobin: 150 is the mean value at 30% fractional saturation for 500 binding sites.

b) What is the standard deviation for the Gaussian distribution?

The standard deviation (σ) for the Gaussian distribution can be calculated as:σ = sqrt(np(1-p))So,σ = sqrt(500 × 0.3 × 0.7)σ = 8.66025

Therefore, the standard deviation for the Gaussian distribution is 8.66025.

c) What is the relative probability of having 125 binding sites occupied versus 250 binding sites occupied at 30% fraction saturation?

The relative probability can be determined using the Gaussian distribution formula: P(x) = (1 / (σsqrt(2π)))e^(-((x-µ)^2) / 2σ^2)

where, x = the number of binding sites occupiedµ = the mean valueσ = the standard deviation

Plugging in the values:

For x = 125:

P(125) = (1 / (8.66025sqrt(2π)))e^(-((125-150)^2) / 2(8.66025)^2)P(125) = 0.0398For x = 250: P(250) = (1 / (8.66025sqrt(2π)))e^(-((250-150)^2) / 2(8.66025)^2)P(250) = 1.125 × 10^-10

Therefore, the relative probability of having 125 binding sites occupied versus 250 binding sites occupied at 30% fractional saturation is 0.0398:1.125 × 10^-10 or approximately 3.54 × 10^8:1.

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Answer:

D

Explanation:

water is used to delude just about anything

The incorrect interpretation of the given balanced equation is option a.

2g s + 3g O2 →2 g SO3.

The coefficient of the reacting species and products are not showing the amount in grams.

In the balanced chemical equation of a reaction, all the reactants and products are written in their perfect stoichiometry. The number of each elements in the reactant side must be equal to their number in  product side. So that the law of conservation of mass is obeyed.

The coefficients of the reactants and products can be balanced to equate the number of each elements in both side. The coefficients represent the number of moles of the reactants and products. Sometimes they are considered to be the number of reacting atoms of each elements.

In the given reaction, 2 moles of S reacts with 3 moles of oxygen gas giving 2 moles of sulphur trioxide. Here, the amount in grams are not given. Therefore, option a is incorrect.

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Your question is incomplete. But your complete question is attached below:

The answer is C since both charge and mass have to be balanced on both sides of the equation.

The total mass of the products is 853.8 g.

We know that we have to apply the principles of stoichiometry so as to be able to obtain the mass of the mass of the products and then the total mass of the products that is obtained in the reaction.

We have that in the question; 496. 5 grams of lead II nitrate reacts with potassium bromide is such a way that the lead II nitrate would be completely consumed in the reaction. This means that the lead II nitrate is the limiting reactant in the reaction.

Number of moles of the lead II nitrate = 496. 5 grams /331 g/mol

= 1.5 moles

If 1 mole of  lead II nitrate produces 1 mole of lead II bromide

Mass of lead II bromide produced = 1.5 moles * 367 g/mol

= 550.5 g

If 1 mole of lead II nitrate produces 2 moles of potassium nitrate

1.5 moles of lead II nitrate produces  1.5 * 2 /1

= 3 moles of  potassium nitrate

Mass of  potassium nitrate = 3  moles * 101.1

= 303.3 g

Total mass produced = 550.5 g + 303.3 g

= 853.8 g

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Answer:

C. A linear, nonpolar molecule

Explanation:

Molecules which are alike usually have the same degree of pull which results in them sharing electrons. This sharing of electrons is known as the molecules exhibiting Covalent bonding between them.

The equal pull also results in the cancelling out of electrons and favoring non polar bonds due to the absence of free electrons which would have been able to interact with H2O in a polar binding system.

Answer:

C

Explanation:

APEX

The bicarbonate buffer system equation, CO2 + H2O ↔ H2CO3 ↔ H+ + HCO3–, plays a crucial role in maintaining the pH balance of the blood. When there is an increase in blood CO2 levels.

As CO2 accumulates in the blood, it reacts with water (H2O) to form carbonic acid (H2CO3) through the action of the enzyme carbonic anhydrase. Carbonic acid then dissociates into hydrogen ions (H+) and bicarbonate ions (HCO3–). This increase in H+ ions leads to a decrease in blood pH, resulting in acidosis.

In obstructive respiratory conditions, due to impaired exhalation, the elimination of CO2 is hindered, leading to its buildup in the bloodstream. This increase in CO2 shifts the equilibrium of the bicarbonate buffer system to the right, favoring the formation of carbonic acid (H2CO3) and subsequently increasing the concentration of H+ ions. This shift towards more H+ ions decreases blood pH, causing respiratory acidosis.

Respiratory acidosis occurs when the blood pH falls below the normal range (pH < 7.35). It can lead to symptoms such as shortness of breath, confusion, fatigue, and in severe cases, can affect vital organ functions.

To compensate for respiratory acidosis, the kidneys increase their reabsorption of bicarbonate ions (HCO3–) and excrete more hydrogen ions (H+) in the urine. This renal compensation helps restore the acid-base balance by gradually returning blood pH toward normal levels.

It is important for individuals with obstructive respiratory conditions to receive appropriate medical treatment and management to alleviate airway obstruction, improve ventilation, and help regulate blood CO2 levels and pH.

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Answer:

your should probably be warming the acid

Explanation:

because when you are it is disappearing

Answer:

Warming the acid

Explanation:

This is because when the acid is heated, the particle of the acid gain more energy (kinetic to be more precise) causing more collisions to occur, colliding even more with the particles of the magnesium ribbon. This increases the rate of disappearance of the magnesium ribbon.

There are four chirality centers in an aldohexose.

Chirality centers are atoms in a molecule that can exist as two non-superposable mirror images, meaning that the molecule can exist in two versions that are mirror images of each other. An aldohexose is a type of sugar containing six carbon atoms and an aldehyde group, and four of its six carbon atoms can exist in two mirror-image versions.

The other two carbon atoms are connected to four hydrogen atoms, which prevents them from being chirality centers. To further explain, let's look at an example: glucose. Glucose has four chirality centers, located at the second, third, fourth, and fifth carbon atoms in the chain.

Each of these chirality centers has two possible arrangements. As a result, glucose can exist in sixteen different configurations.

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Answer:

[MgCl₂] = 1.05 m

Explanation:

Molality is a type of concentration that indicates the moles of solute in 1000g of solvent.

m = mol/kg.

Our solute is MgCl₂. We convert mass to moles:

25 g . 1mol / 95.21 g = 0.262 moles.

Our solvent is water → 250 mL of H₂O

We use density to determine the mass: density = m / V

Density . V = m → 0.9975 g/mL . 250 mL = 249.3 g

We convert from g to kg = 249.3 g . 1kg/1000g = 0.2493kg

molality → 0.262 mol /0.2493kg = 1.05

Answer:

D

Explanation:

NO is the molecule nitrogen monoxide while No is the atomic symbol for the element nobelium

Answer:

During cytokinesis, which is a physical process of cell division, the cells divide the cytoplasm of a parent cell into two daughter cells. The ring on the outside of the cell which is also known as a contractile ring, shrinks at the equator of the cell which causes pinching, and the plasma membrane goes inward. After all that happens there’s something called a cleavage furrow which is the formation of a dip between the two cells while they are splitting.

(You can sum it up, but I hope this helps!)

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Answer → The Waves Size depends on ★ wind speed ★ , ★ wind duration★ , and the ★ area over which the wind is blowing ★

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Answer:

A

Explanation:

2 mol HgO : 1 mol O2

1 mol HgO is 216.589 grams

2 mol HgO is 433.178 grams

433.178 grams HgO : 1 mol O2

(0.726) 433.178 grams HgO : (0.726) 1 mol O2

314.4 grams HgO : 0.726 mol O2

or just 314 grams

Pyruvate undergoes fermentation, which transforms it into lactic acid inside the absence of oxygen.

The breakdown of the drug occurs throughout this process. similar to how pyruvate is converted into lactic acid.

An organic acid contains lactic acid. Its chemical formula is CH 3CH(OH)COOH.

It serves as a synthesis precursor inside a number of biochemical as well as molecular synthesis industries.

The final result of the glycolysis pathway, pyruvate, is transformed into lactic acid inside the lack of oxygen.

Glycolysis

The process through which glucose gets broken down to provide energy is known as glycolysis.

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Answer:

Im pretty sure the answers b

Explanation:

Because if its talking about overall tempature the it means ihas tension with high surface.

According to vital force theory, organic compounds must have their origin in living organisms and could never be synthesized from inorganic material. This theory is known as the vital force theory

Berzelius gave this theory in 1809. According to this theory, the organic living compounds are not formed from inorganic compounds but a vital force. This vital force or spiritual force is called God. Vital Force Theory was rejected in 1823 when Friedrich Wöhler synthesized the first organic compound urea from an inorganic compound, Ammonium cyanate.

Berzelius defined this theory in 1815, setting down three principles with it:

1- Organic compounds cannot be made in the laboratory from inorganic compounds.

2- The synthesis of organic compounds requires a vital force.

3- Only living organisms (God-given) contain this vital force.