Determine the mass in grams of 1.6 x 10^-3 mol glucose, C6H12O6

Answer:

\(m_{nitrogen}=14g\)

Explanation:

Hello,

In this case, since we are talking about a chemical reaction in which a compound having nitrogen and chlorine is decomposed into chlorine and nitrogen, we must remember that the law of conservation of mass must be obeyed, for that reason, we notice that the mass of the whole reactants must equal the mass of the whole products, as shown below:

\(m_{reactants}=m_{products}\)

Next, we know there is only one single reactant and products are constituted by both chlorine and nitrogen:

\(m_{reactant}=m_{chlorine}+m_{nitrogen}\)

In such a way, we can compute the mass of nitrogen as shown below:

\(m_{nitrogen}=m_{reactant}-m_{chlorine}=120.4g-106.4g\\\\m_{nitrogen}=14g\)

Best regards.

First, we write our reaction and then we balance it:

AgBr + 2Na2S2O3 → Na3Ag(S203)2 + NaBr

To solve this, we need the molar masses of AgBr and NaBr (Please, use the periodic table to do this)

The molar mass of AgBr = 188 g/mol

The molar mass of NaBr = 103 g/mol

Procedure:

188 g AgBr --------------------- 103 g NaBr

41.3 g AgBr --------------------- X

X = 22.6 g

Answer: 22.6 g NaBr can be produced

Answer: D

Explanation:

When 12.50 mL of 1.05 M KOH is added to 50.0 mL of 0.225 M HBr, the resulting solution has a pH of 13.35.

Here’s how to calculate it:

First, we need to determine the number of moles of KOH and HBr in the solution:

moles of KOH = (12.50 mL) * (1.05 mol/L) * (1 L/1000 mL) = 0.013125 mol moles of HBr = (50.0 mL) * (0.225 mol/L) * (1 L/1000 mL) = 0.01125 mol

KOH is a strong base and HBr is a strong acid, so they will react completely to form water and a salt (KBr):

KOH + HBr -> KBr + H2O

The number of moles of KOH is greater than the number of moles of HBr, so there will be an excess of KOH in the solution after the reaction is complete:

moles of excess KOH = moles of KOH - moles of HBr = 0.013125 mol - 0.01125 mol = 0.001875 mol

The total volume of the solution is the sum of the volumes of KOH and HBr:

total volume = 12.50 mL + 50.0 mL = 62.5 mL

The concentration of excess OH- ions in the solution is:

[OH-] = moles of excess KOH / total volume = 0.001875 mol / (62.5 mL * (1 L/1000 mL)) = 0.03 M

The pOH of the solution can be calculated using the formula pOH = -log[OH-]:

pOH = -log(0.03) = 1.52

The pH can be calculated using the formula pH + pOH = 14:

pH = 14 - pOH = 14 - 1.52 = 13.35

So the correct answer is D. 13.35.

Answer:

Vapor pressure is between vapor pressures of the pure liquids.

Explanation:

Vapor pressure is between vapor pressures of the pure liquids.

2520 joule is the heat (q) when a student dissolves 5.00 g of CaCl₂ into 200.0 g of H₂O. The temperature changes from 25.0°C to 28.0°C.

H₂O mass=200.0 g

c of H₂O= 4.2 joules per gram

Δt=3 °C

q=mcΔt

q=200.0 g×4.2×3

q=2520 joule

mass of solution= (solute + solute)

mass of solution=5.00 g+200.0 g

mass of solution=700 g

Heat has a very precise meaning in thermodynamics that is distinct from how we typically use the word. Heat is the thermal energy that is transmitted when two systems with different surface temperatures come into contact. Heat is denoted by the letters q or Q and is measured in Joules.

Because it is defined in the context of a process through which energy can be transmitted, heat is occasionally referred to as a process quantity. We don't discuss the heat that a cup of coffee contains, but we may discuss the heat that the cup of hot coffee transfers to your hand. Another significant characteristic is heat.

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Assuming that the glass is made entirely of silicon dioxide (SiO2), which is a common component of glass, we can calculate the number of silicon atoms based on the molecular weight of SiO2 and the weight of the glass.

The molecular weight of SiO2 is approximately 60 g/mol. Therefore, 6.240 g of SiO2 corresponds to:

6.240 g SiO2 × (1 mol SiO2/60 g SiO2) = 0.104 mol SiO2

Since each molecule of SiO2 contains one silicon atom, the number of silicon atoms in the piece of glass can be calculated by multiplying the number of moles of SiO2 by Avogadro's number (6.022 × 10^23 atoms/mol):

0.104 mol SiO2 × (6.022 × 10^23 atoms/mol) = 6.26 × 10^22 silicon atoms

Therefore, there are approximately 6.26 × 10^22 silicon atoms in a piece of glass weighing 6.240 g, assuming the glass is made entirely of SiO2.

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Answer: a

Explanation: correct on ed

Answer:

A.

just-world phenomenon

Explanation:

A structural formula is a graphical representation of a molecule that shows the arrangement of atoms

A structural formula is a graphical representation of a molecule that shows the arrangement of atoms in the molecule and how they are connected to each other. The structural formula typically uses lines to represent chemical bonds between atoms and shows the relative positions of the atoms in three-dimensional space.

The structural formula allows chemists to better understand the properties and behavior of a molecule based on its structure, such as its ability to form certain types of chemical bonds and participate in chemical reactions.

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The elements that would form metallic bonds are as follows:

A metallic bond in chemistry is a chemical bond in which mobile electrons are shared over many nuclei and therefore, leads to electrical conduction.

Metallic bonds are formed strictly by metallic elements in the periodic table.

Iridium is a chemical element with symbol Ir with an atomic number of 77. It is a very hard, brittle, silvery-white transition metal.

Iron is also a metallic chemical element with symbol Fe.

Therefore, the elements that would form metallic bonds are as follows:

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Answer:

Iridium

Cadmium

Iron

Explanation:

Test.

Answer:

C,  hydrogen.

Explanation:

The fact that uranium is a radioactive element is a chemical property. Details about radioactivity can be found below.

Radioactivity is the spontaneous emission of ionizing radiation as a result of a nuclear reaction.

Radioactivity, which is the emission of particles from an unstable nucleus, is a chemical property.

Therefore, it can be said that the fact that uranium is a radioactive element is a chemical property.

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Answer:

When a neutral atom loses one or more electrons, the total number of electrons decreases while the number of protons in the nucleus remains the same.

The result is that the atom becomes a cation —an ion with a net positive charge.

The opposite process can also occur. When a neutral atom gains one or more electrons, the total number of electrons increases while the number of protons in the nucleus remains the same.

The result is that the atom becomes an anion —an ion with a net negative charge.

Explanation:

Khan Academy

When a neutral atom loses one or more electrons, the total number of electrons decreases while the number of protons in the nucleus remains the same. The result is that the atom becomes a cation - an ion with a net positive charge.

The opposite process can also occur. When a neutral atom gains one or more electrons, the total number of electrons increases while the number of protons in the nucleus remains the same. The result is that the atom becomes an anion - an ion with a net negative charge.

Like charges repel each other, while opposite charges attract each other. This principle is one of the fundamental aspects of electrostatics. According to Coulomb's law, the force between two charged particles is directly proportional to the product of their charges and inversely proportional to the square of the distance between them.

As the distance between two charged particles decreases, the force between them increases. This is because the closer the particles are, the stronger the electric field they create, leading to a stronger force of interaction.

On the other hand, as the magnitude of the charges decreases, the force between the particles also decreases. This is because the force is directly proportional to the product of the charges. If one or both of the charges are smaller, the force they exert on each other will be weaker.

In summary, according to Coulomb's law, decreasing the distance between charged particles increases the force between them, while decreasing the magnitude of the charges decreases the force. This understanding of the relationship between charge, distance, and force is crucial in explaining the behavior of charged particles and the interactions between them.

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Answer:

The surface of earth sits on plates that move over time because of the pressure build up underneath.When the pressure releases the pressure goes through the cracks of the plates (Or Earth) pushing them apart causing earthquakes and volcano eruptions.

Explanation: Science

Sulphur dioxide molecule have two resonance structure.

Resonance structures are the different Lewis structures of the same molecule. The components of the molecule will change places from one another.

The two resonance structures of sulphur dioxide molecule is demonstrated here.

A third Lewis structure can also be drawn. But that is not a stable molecule in reality and can't be counted.

To solve this, we must be knowing each and every concept related to resonance. Therefore, there are total  two resonance structure of sulfur dioxide molecule.

Resonance is a technique for characterizing delocalized electrons in molecule in which the bonding cannot be described directly by a singular Lewis structure. It is also called mesomerism.

Each unique Lewis structure of the targeted molecule or ion is referred to as a contributing structure. Because they simply differ in the location of delocalized electrons, contributing structures really aren't isomers of the targeted molecule or ion. There are total  two resonance structure of sulfur dioxide molecule.

Therefore, there are total two resonance structure of sulfur dioxide molecule.

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You would recover 36.525g of NaCl after evaporating all of the water.

To find the grams of NaCl that would be recovered after evaporating all the water, we can use the following formula:

mass = moles * molar mass

Where:

Moles = Molarity * Volume

Molarity = 0.250 M

Volume = 2500.0 mL = 2.5 L

Molar mass of NaCl = 58.44 g/mol

mass = 0.250 M * 2.5 L * 58.44 g/mol

mass = 36.525 g

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The ion concentration of 0.05 M \(CaCl_2\) would be 0.05 mol Ca ions and 0.1 mol Cl ions respectively.

\(CaCl_2\) contains two ions according to the following equations:

\(CaCl_2 -- > Ca^{2+} + 2Cl^-\)

1 mole           1 mole   2 moles

0.05 M CaCl2 contains 0.05 moles of the solute in 1 liter of the solution. Thus, the equivalent mole of Ca ion would be 0.05 moles while that of Cl ion would be 0.10 mole (0.05x2).

Concentration of Ca ions = 0.05 moles

Concentration of Cl ions = 0.05 x 2 = 0.010 moles

In other words, the ion concentrations of 0.05 M CaCl2 would be 0.05 moles of Ca ions and 0.10 moles of Cl ions.

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The solubility of\(LaF_3\) in water is 3.04 x 10^-6 mol/L.

The solubility of \(LaF_3\) in water can be determined using the Ksp expression:

\(Ksp = [La^{3+}][F^-]^3\)

Where \([La^{3+}]\)and \([F^-]\) are the molar concentrations of the \(La^{3+}\) and \(F^-\) ions in the solution.

Since each \(LaF_3\) formula unit dissociates into one \(La^{3+}\) ion and three \(F^-\) ions, the molar solubility of \(LaF_3\) can be represented as x. Thus, the molar concentrations of \(La^{3+}\) and \(F^-\) ions in the solution can be written as x and 3x, respectively.

Substituting these values into the Ksp expression gives:

Ksp = x*(3x)^3 = 27x^4

Now, we can solve for x:

x = (Ksp/27)^(1/4)

= (2 x 10^-19 / 27)^(1/4)

= 3.04 x 10^-6 mol/L

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Answer:

thermal; coolant

Explanation:

A refrigerator transfers thermal energy from the cool air inside the refrigerator to the warm air in the kitchen. I hope this helps! ^-^

Answer: An electron con only exist in a limited number of quantized energy levels.

Explanation:

The arrow in a chemical equation represents the direction of the reaction. It indicates the conversion of reactants into products. The arrow points from the reactant side to the product side, symbolizing the flow of the reaction.

The purpose of the arrow is to visually represent the chemical transformation occurring in the reaction. It shows the relationship between the reactants and products and the direction in which the reaction proceeds. The arrow implies that the reactant molecules are being rearranged and transformed into new substances with different properties.

Chemical equations are used to describe the stoichiometry and balance of reactions. The arrow helps convey this information by illustrating the overall process taking place. It serves as a crucial element in understanding the reaction's composition, reaction conditions, and the substances involved.

Furthermore, the arrow also implies that the reaction can occur in both directions. In reversible reactions, the arrow can be represented as a double-headed arrow, indicating that the reaction can proceed in either direction depending on the conditions.

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Answer: The law of proportion states that elements combine in whole number ratios. The gram readings for K are multiples of each other, both in grams and moles.

Let us compare the ratios:

2.44 grams/1.22 grams = 2

4.89 grams/2.44 grams = 2

Therefore, Potassium always combines with Oxygen in a ratio of 2  is to 1.

Answer:

The choose ( D )

weak interactions between molecules.

Answer:

Explanation:

el     a  

Answer:

a measure of the suitability of water for a particular use based on selected physical, chemical, and biological characteristics.

Water quality is a parameter to qualify based on several key factors. Some of these factors are:

• Conceptration of dissolved oxygen;

• Bacteria levels;

• Amount of salt (salinity);

• Amount of material suspended in the water (turbidity).

Other elements that might be measured to determine water quality are:

• Concentration of algae;

• Pesticides;

• Herbicides;

• Heavy metals.

Answer

Your mass will be the same, 100 kg

This is because mass is a constant property, irrespective of its position in the universe, whether on a different planet or a celestial body. In contrast, your weight would become approximately one-sixth if you were on the moon because weight depends on gravity but mass does not.

Answer:

hi

Explanation:

I'm just figuring this out

Answer:

heterozygous