A 46.2 L sample of gas exerts 237.4 mm Hg pressure at 139.2 ºC. What volume does the gas have at 702.4 mm Hg and 63.4 ºC?
A. 12.7
B. 2.40
C. 7.11
D. 112

Answer: Maybe not? Unless you care about namebrand, theres lots of dupes.

Answer:

Products

Explanation:

The end results of a chemical reaction are called products

-> In chemistry, a product is a substance that is formed as the result of a chemical reaction.

-> Not many other ways to word this as it is a definition

Have a nice day!

     I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)

- Heather

Answer:

Products

General Formulas and Concepts:

Reactions

Reactants and Products in RxNs

Explanation:

The substances used in a chemical reaction is called the reactants, usually located on the left side of the arrow (if pointing right).

The substances produced in a chemical reaction is called the products, usually located on the right side of the arrow (if pointing right).

RxN examples:

Reactant + Reactant → Product + Product

Reactant + Reactant → Product

Reactant → Product + Product

Topic: Honors Chemistry

Answer:

No

Explanation:

In the hot pack, as the water reacts with the magnesium sulfate, the pack becomes bigger is not an indication that new atoms have been created or produced.

As with all chemical reactions, they all obey the law of conservation of matter which states that "in chemical reactions, matter is neither created nor destroyed but atoms simply recombine".

The reason why the hotpack becomes bigger is because the atoms gain more volume.

When hydrogen and steam are both present in a gas at the same pressure and temperature, this is the ideal gas condition. This is so because according to the ideal gas law, an ideal gas's pressure, volume, and temperature are all precisely proportional to one another.

This indicates that when the two gases have the same temperature and pressure, the two gases will also have the same volume. As a result, the gases are in their ideal state, having the same volume and pressure but retaining their distinct chemical compositions.

This is perfect because it enables the two gases to interact with one another in a predictable way, allowing for the measurement and prediction of the gases' behaviour.

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a. low melting point: Nonmetals. b. shiny: Metals. c. poor conductor: Nonmetals. d. ductile: Metals. e. malleable: Metals. f. brittle: Nonmetals. g. good conductor: Metals. h. high melting point: Metals

a. Low melting point is generally displayed by nonmetals. Metals tend to have high melting points.

b. Metals are typically shiny due to their ability to reflect light.

c. Nonmetals are generally poor conductors of heat and electricity.

d. Metals are ductile, meaning they can be drawn into thin wires without breaking.

e. Metals are malleable, meaning they can be hammered into thin sheets or shapes without shattering.

f. Nonmetals are usually brittle, meaning they are prone to breaking or shattering when subjected to stress.

g. Metals are good conductors of heat and electricity.

h. Metals typically have high melting points compared to nonmetals.

It's important to note that these are general trends and not absolute characteristics for all metals or nonmetals. Some exceptions or variations may exist within specific elements or compounds.

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Answer:

Mass = 58.96 g

Explanation:

Given data:

Mass of CH₄ = 21.5 g

Mass of O₂ = 387.5 g

Mass of CO₂ formed = ?

Solution:

Chemical equation:

CH₄ + 2O₂       →   CO₂ +  2H₂O

Number of moles of CH₄:

Number of moles = mass / molar mass

Number of moles = 21.5 g/ 16 g/mol

Number of moles = 1.34 mol

Number of moles of O₂ :

Number of moles = mass / molar mass

Number of moles = 387.5 g/ 32 g/mol

Number of moles = 12.1 mol

now we will compare the moles of CO₂  with O₂  and CH₄.

                       O₂             :          CO₂

                          2             :            1

                          12.1          :          1/2×12.1 = 6.05 mol

                        CH₄          :          CO₂

                           1              :            1

                          1.34           :         1.34

Number of moles of CO₂ produced by  CH₄ are less thus it will limiting reactant.

Mass of  CO₂:

Mass = number of moles × molar mass

Mass =  1.34 mol × 44 g/mol

Mass = 58.96 g

Answer:

uh yeah I think so technically

Answer:

no

Explanation:

The reduction potential of Cu²⁺ is 0.34 volts and the reduction potential of Ag⁺ is 0.8 volts

The reduction potentials of Ag⁺ and Cu²⁺ relative to the silver and copper electrodes, respectively, can be found by using a vertical ruler to shift the zero point of the reference hydrogen half-reaction.

Relative to the silver electrode, the reduction potential of Ag⁺  is 0.8 volts and

The reduction potential of Cu²⁺ is 0.0 volts.

Relative to the copper electrode, the reduction potential of Ag⁺  is 0.0 volts and

The reduction potential of Cu²⁺ is 0.34 volts.

The reduction potentials of the other half-reactions (Fe²⁺, Zn²⁺) cannot be measured relative to the silver and copper electrodes, as they are not included in the vertical ruler.

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         A quantum is the smallest discrete unit of a phenomenon (plural: quanta). For instance, a photon is a quantum of light, while an electron is a quantum of electricity. Quantum is a Latin word that means "quantity" or "how much?" Anything that can be measured is something that can be quantified.

             Bohr's hypothesis, often known as quantum theory, postulated that electrons move around the nucleus according to the classical principles, but with restrictions on the orbits they can take and the energy they lose as radiation when they change orbits.

        The Bohr model, also known as the Rutherford-Bohr model, was first proposed by Niels Bohr and Ernest Rutherford in 1913 and describes an atomic system with an orbiting system of electrons and a small, dense nucleus that is similar to the Solar System in structure but is attracted by electrostatic forces rather than gravity.

           A small positively charged nucleus is encircled by rotating negatively charged electrons in set orbits, according to the Bohr Atomic Model. He came to the conclusion that an electron will have more energy if it is placed far from the nucleus and less energy if it is located close to the nucleus.

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The calculated half-life of -10 does not make sense as a positive value is expected.

To determine the half-life of a radioactive isotope, we can use the formula for exponential decay:

N(t) = N₀ * (1/2)^(t / t₁/₂)

where:

N(t) is the amount of the isotope remaining at time t

N₀ is the initial amount of the isotope

t is the elapsed time

t₁/₂ is the half-life of the isotope

In this case, we know that the initial amount N₀ is 10.00 grams, and the amount remaining after 10 days N(t) is 5.00 grams. Plugging in these values, we can solve for the half-life (t₁/₂).

5.00 = 10.00 * (1/2)^(10 / t₁/₂)

Dividing both sides by 10.00:

0.5 = (1/2)^(10 / t₁/₂)

Taking the logarithm (base 1/2) of both sides:

log₁/₂(0.5) = 10 / t₁/₂

Simplifying:

-1 = 10 / t₁/₂

Rearranging the equation:

t₁/₂ = 10 / (-1)

t₁/₂ = -10

The half-life obtained from this calculation is -10, which doesn't make sense as a time measurement. It's important to note that the half-life is a positive value representing the time it takes for half of the radioactive substance to decay.

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Answer:

The five conditions of chemical change: color change, formation of a precipitate, formation of a gas, odor change, temperature change

Hope that helps

Answer:

The number of outer shell electrons determines the group number of the element. The number of occupied principle quantum shells (energy levels) determines the period of the element. The proton number determines the element itself and its position.

Explanation:

Answer:

Oil spills

Explanation:

I've done it before

Answer:

The Electronic configuration of 11N is

[Ne]3s1

The standard potential for the given galvanic cell is +1.06 V.

To calculate the standard potential for the given galvanic cell, we need to determine the individual reduction potentials of the half-reactions and then subtract the potential of the anode (where oxidation occurs) from the potential of the cathode (where reduction occurs).

Given reduction half-reaction potentials:

Ag+(aq) + e^− → Ag(s): E∘ = +0.80 V

Ni2+(aq) + 2e^− → Ni(s): E∘ = -0.26 V

Since we have the reduction potentials for both half-reactions, we can directly calculate the standard potential for the cell:

E∘(cell) = E∘(cathode) - E∘(anode)

= E∘(Ag+(aq) + e^− → Ag(s)) - E∘(Ni2+(aq) + 2e^− → Ni(s))

E∘(cell) = +0.80 V - (-0.26 V)

= +1.06 V

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Lone pairs and double bonds in a molecule tend to occupy more space and exert greater repulsion compared to bonding pairs. This is due to the electron density associated with lone pairs and double bonds, which leads to an increased electron-electron repulsion.

In a molecule, bonding pairs are formed by the sharing of electrons between two atoms, and they tend to be located closer to the atomic nuclei. On the other hand, lone pairs and double bonds involve non-bonding electrons that are not involved in the sharing between atoms and occupy more space around the atom. The greater repulsion exerted by lone pairs and double bonds arises from the fact that electrons repel each other due to their negative charges. This repulsion influences the overall molecular geometry and affects the bond angles between atoms. Therefore, the spread-out nature of lone pairs and double bonds in space leads to increased electron-electron repulsion, which can impact the molecular shape and bond angles in a molecule.

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Explanation:

The number of electrons, in turn, determines the chemical properties of the atom. Protons contribute to the mass of an atom and provide the positive charge to the nucleus. The number of protons also determines the identity of the element

Answer:

Question 1: (A)

The number of electrons determine the chemical properties of an atom.

Question 2:  (C)

Test tube cannot measure the volume of liquids rather they are used in chemical reactions

Question 3: (D)

Pauli's Exclusion Principle states that no two electrons in the same atom can have identical values for all four of their quantum numbers.

Answer:

The element that is present in proteins but not in carbohydrates or fats is d) nitrogen.

Explanation:

Proteins are the only macromolecules among proteins, carbohydrates, and fats that contain nitrogen atoms. Nitrogen is a crucial component of amino acids, the building blocks of proteins, whereas carbohydrates and fats primarily consist of carbon, hydrogen, and oxygen atoms.

Answer:

Approximately \(0.6003\; \rm mol\) formula units.

Explanation:

Look up the relative atomic mass data for \(\rm K\), \(\rm Cl\), and \(\rm O\) on a modern periodic table:

The relative atomic mass of an element is numerically equal to the mass (in grams) of one mole of its atoms. For example, the relative atomic mass of \(\rm K\) is \(39.908\). Therefore, the mass of one mole of \(\rm K\!\) atoms should be \(39.908\; \rm g\).

Each \(\rm KClO_3\) "formula" unit includes one \(\rm K\) atom, one \(\rm Cl\) atom, and three \(\rm O\) atoms. Therefore, one mole of \(\rm KClO_3\!\) formula units would include:

From the relative atomic mass of these three elements:

Combining these three parts should give the mass of one mole of \(\rm KClO_3\) formula units:

\(\begin{aligned}& M(\mathrm{KClO_3}) \\ &= 39.908 + 35.45 + 3 \times 15.999 \\ &= 122.545\; \rm g \cdot mol^{-1}\end{aligned}\).

The formula mass of \(\rm KClO_3\) is \(M(\mathrm{KClO_3}) = 122.545\; \rm g \cdot mol^{-1}\), meaning that the mass of one mole of \(\rm KClO_3\!\) formula units would be \(122.545\; \rm g\!\).

The mass of this \(\rm KClO_3\!\!\) sample is \(m(\mathrm{KClO_3}) = 73.56\; \rm g\). The number of moles of formula \(\rm KClO_3\!\) units in this sample would be:

\(\begin{aligned}n(\mathrm{KClO_3}) &= \frac{m(\mathrm{KClO_3})}{M(\mathrm{KClO_3})} \\ &= \frac{73.56\; \rm g}{122.545\; \rm g \cdot mol^{-1}} \approx 0.6003\; \rm mol\end{aligned}\).

To know the exact number of mole of potassium (K) in 73.56 g of potassium chlorate (v), KClO₃ do the following:

Determination of the number of mole in 73.56 g of potassium chlorate (v), KClO₃

Mass of KClO₃ = 73.56 g

Molar mass of KClO₃ = 39 + 35.5 + (16×3)

= 39 + 35.5 + 48

= 122.5 g/mol

\(Mole =\frac{mass}{molar mass}\\\\Mol KClO_{3} = \frac{73.56}{122.5}\)

Determination of the number of mole of potassium, K in 0.6 mole (i.e 73.56 g) of KClO₃

Considering the molecular formula of potassium chlorate (v), KClO₃, we can see that:

1 mole of KClO₃ contains 1 mole of K.

Therefore, 0.6 mole of KClO₃ will also contain 0.6 mole of K.

Therefore, we can conclude that 73.56 g of KClO₃ contains 0.6 mole of potassium, K.

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Answer:

Touch, or contact, thermometers must touch the body in order to measure temperature. Remote, or no-contact, thermometers can measure body temperature without touching the skin.

Explanation:

hope this helps

3.3256 Liters

See the image I have shared to you above

Answer:

B. 7.2k

Explanation:

took the test ;)

Answer:

Explanation:

Alexander Fleming's hypothesis was that the juice that was produced by the mold that appeared in the petri dishes was killing the bacteria growing there (streptococcus, meningococcus and the diphtheria bacillus).

Answer:

He thought the mold had released a chemical that prevented the bacteria’s growth.

Explanation:

Gradpoint

Answer:

Newton's First Law is the law of inertia. An object with no net forces acting on it which is initially at rest will remain at rest. If it is moving, it will continue to move in a straight line with constant velocity. F is the net force acting on an object.

Explanation:

yay hope this helps.

it need force or something

The molarity of the following subquestions are as follows;

The molarity of a solution can be calculated using the following expression;

CaVa = CbVb

Where;

QUESTION 1:

57.86 × 3.35 = 182.86 × Cb

193.831 = 182.86Cb

Cb = 1.06M

QUESTION 2:

22.10 × 1.2 = 122.10 × Cb

26.52 = 122.10Cb

Cb = 0.22 M

QUESTION 3:

65.69 × 3.79 = 140.69 × Cb

248.9651 = 140.69Cb

Cb = 1.77 M

QUESTION 4:

72.86 × 0.15 = 272.86 × Cb

10.929 = 272.86Cb

Cb = 0.0401 M

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Answer:

None of these answers are correct.

CO2 is a covalent not ionic compound

It DOES melt, though at a very low temperature

Its melting point is negative, not high

Explanation:

the moles of CO2(g) =2.5moles

I hope this help

Answer:

Yes

Explanation:

The visible light spectrum is the segment of the electromagnetic spectrum that the human eye can view.

Answer:

The answer is

Explanation:

To convert the volume from cm³ to mL we use the conversion

1 cm³ = 1 mL

So from the question

if 1 cm³ = 1 mL

Then 150 cm³ = 150 mL

Hope this helps you