Identify subatomic particles Question The prefix in subatomic tells us that subatomic particles are: Select the correct answer below:
O particles made of atoms
O the basic building blocks of atoms 2
O particles of similar size to atoms
O particles that power nuclear submarines FE Type here to search

All 435 members of the United States House of Representatives are up for re-election in each election cycle, which occurs every two years.

This means that every seat in the House of Representatives is up for grabs in the regular congressional elections that are held in November of even-numbered years. Each state is divided into congressional districts based on population, and each district elects one representative to serve in the House.

The terms of representatives are two years long, so all representatives must run for re-election every two years if they wish to continue serving in the House.

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Answer:

In the human body, potential energy is stored in the bonds between atoms and molecules. Chemical energy is the form of potential energy in which energy is stored in chemical bonds. When those bonds are formed, chemical energy is invested, and when they break, chemical energy is released. Notice that chemical energy, like all energy, is neither created nor destroyed; rather, it is converted from one form to another. When you eat an energy bar before heading out the door for a hike, the honey, nuts, and other foods the bar contains are broken down and rearranged by your body into molecules that your muscle cells convert to kinetic energy.

Explanation:

Answer:

2,2- dichloro-heptane

Explanation:

The IUPAC name of the compound is 2,2-dichloro-heptane

Answer:

Explanation:

C decays by a process called beta decay. During this process, an atom of 14C decays into an atom of 14N, during which one of the neutrons in the carbon atom becomes a proton. This increases the number of protons in the atom by one, creating a nitrogen atom rather than a carbon atom.

Answer:

You can convert between the various different sizes by merely moving the decimal point the correct number of places. The basic metric units are meters (for length), grams (for mass or weight), and liters (for volume).

Explanation:

Answer:

Lines of latitude run from east to west.

Explanation:

Answer: 140

Explanation:

Given the following :

Mass of metal = 18g = 0.018kg

Mass of water (calorimeter) = 21g = 0.021kg

Initial temperature of metal = 273 + 96 = 369k

Initial temperature of water = 273 + 24 = 297k

Final temperature inside calorimeter = 273 + 26 = 299k

Temperature change of metal = 299 - 369= -70k

Temperature change of water = 299 - 297 = 2k

H = mc ΔT

m = mass

c = specific heat capacity

ΔT = change in temperature

Heat lost by metal = heat gained by water

mc ΔT = mc ΔT

Specific heat capacity of water = 4200

18 * C * ( 299 - 369 ) = 21 * 4.2 * ( 299 - 297)

0.018 × C × -70 = 0.021 × 4.2 × 2

- 1.26 × C = 0.1764

C = 176.4/1.26

C = 140

At 35°C, the equilibrium constant (K) for the reaction is 1.6 × 10^5. To calculate the concentrations of all species at equilibrium for the given mixture (2.0 mol pure NOCl in a 2.0-L flask), we need to assume that the initial concentration of NOCl is 2.0 mol and the initial concentrations of other species (NO and Cl2) are 0 mol.

Using the equilibrium constant expression (K = [NO] × [Cl2] / [NOCl]), we can solve for the equilibrium concentrations. Let's denote the change in concentration as "x".
Since 2.0 mol of NOCl dissociates into 2.0 mol of NO and 2.0 mol of Cl2, we have:
[NOCl] = 2.0 - x
[NO] = 2.0 + x
[Cl2] = 2.0 + x
Substituting these values into the equilibrium constant expression, we get:
K = ([NO] × [Cl2]) / [NOCl]
1.6 × 10^5 = ((2.0 + x) × (2.0 + x)) / (2.0 - x)
Simplifying the equation and solving for "x" will give us the concentrations at equilibrium.

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The substance in the image above would be classified as a mixture of elements (option E).

A compound is a substance formed by chemical bonding of two or more elements in definite proportions by weight.

On the other hand, a mixture is made when two or more substances are combined, but they are not combined chemically.

According to this question, an image is shown with two different substances or elements as distinguished by coloration (white and purple). These elements are combined but not chemically bonded, hence, is a mixture.

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While NADPH is necessary for the synthesis of several organic compounds, ribose 5 phosphate is required for the synthesis of nucleic acid. The whole oxidation of glucose happens in the cytosol via the pentose phosphate route, which generates NADPH and CO2 but not ATP.

Are biosynthetic reactions dependent on ribose-5-P?

If ribose-5-P is not required for biosynthetic processes but NADPH is.

What results from the reaction of ribulose with glucose-6-phosphate?

In this process, a single molecule of glucose-6-phosphate breaks down into two molecules of NADPH and one molecule of ribulose-5-phosphate in the presence of a water molecule and NADP+.

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Ribulose 5-phosphate - 2 NADPH + 2 H+ + CO Glucose 6-phosphate - 2 NADP+ + H2O is the overall result for this process.

Here are the eight responses: NADPH is produced via the following reactions: reaction 1 transforms sugar 6-phosphate into D-glucono-1,5-lactone 6-phosphate; reaction 2 creates 6-phospho-D-gluconate; reaction 3 creates ribulose 5-phosphate; and reaction 4.

The five-carbon sugar ribose is referred to as pentose, while nicotinamide adenine phosphate, or NADPH, is referred to as phosphate in the name of the pentose phosphate pathway.

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Awnser

B. Metallic bonds

Explanation:

Castle Learning

Answer:

B) metallic bonds

Explanation:

Castle learning

Nice written.

Is it written by you yourself or you have copied it from somewhere?

Answer:

Should be a 15 imo

Explanation:

N is one, 4H = 4, S 2 because of the 2 and O 8 because of the 4 and the 2 before the S.

To produce 0.650 g of aspirin, approximately 0.824 g of salicylic acid is required, assuming acetic anhydride is present in excess.

The molar mass of salicylic acid is 138.12 g/mol, and the molar mass of aspirin (acetylsalicylic acid) is 180.16 g/mol. To determine the amount of salicylic acid needed to produce 0.650 g of aspirin, we can use the stoichiometry of the reaction.

The balanced chemical equation for the synthesis of aspirin from salicylic acid and acetic anhydride is:

C₇H₆O₃ + C₄H₆O₃ → C₉H₈O₄ + CH₃COOH

From the equation, we can see that one mole of salicylic acid (C₇H₆O₃) reacts with one mole of acetic anhydride (C₄H₆O₃) to produce one mole of aspirin (C₉H₈O₄) and one mole of acetic acid (CH₃COOH).

First, we calculate the number of moles of aspirin:

moles of aspirin = mass of aspirin / molar mass of aspirin

moles of aspirin = 0.650 g / 180.16 g/mol ≈ 0.00361 mol

Since the molar ratio between salicylic acid and aspirin is 1:1, the number of moles of salicylic acid required is also 0.00361 mol.

Finally, we calculate the mass of salicylic acid:

mass of salicylic acid = moles of salicylic acid × molar mass of salicylic acid

mass of salicylic acid = 0.00361 mol × 138.12 g/mol ≈ 0.824 g

Therefore, approximately 0.824 g of salicylic acid is required to produce 0.650 g of aspirin, assuming acetic anhydride is present in excess.

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Answer:

47.6°C is the change of temperature

Explanation:

To solve this question we must use the equation of specific heat of a material:

Q = m*ΔT*S

Where Q is heat applied = 90J

m is the mass of the substance = 15g gold

ΔT is change in temperature = Our incognite

S is specific heat of the material = 0.126J/g°C for gold

Replacing:

90J = 15g*ΔT*0.126J/g°C

90J/15g*0.126J/g°C = ΔT

ΔT = 47.6°C is the change of temperature

Answer: The concentration of a solution made by combining 52 grams of  \(NaCH_{3}COO^{-}\) with 150 mL of water is 4.22 M.

Explanation:

Given: Mass = 52 grams

Volume = 150 mL (1 mL = 0.001 L) = 0.150 L

Molarity is the number of moles of a substance present in liter of a solution.

And, moles is the mass of a substance divided by its molar mass.

Hence, moles of \(NaCH_{3}COO^{-}\) (molar mass = 82.034 g/mol) is as follows.

\(Moles = \frac{mass}{molar mass}\\= \frac{52 g}{82.034 g/mol}\\= 0.633 mol\)

Therefore, concentration of given solution is as follows.

\(Molarity = \frac{moles}{Volume(in L)}\\= \frac{0.633 mol}{0.150 L}\\= 4.22 M\)

Thus, we can conclude that the concentration of a solution made by combining 52 grams of  \(NaCH_{3}COO^{-}\) with 150 mL of water is 4.22 M.

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 amount of carbon dioxide produced from the combustion of a candle formula depends on the specific formula and the mass of the candle. However, on average, the combustion of one gram of wax in a candle produces approximately 3 grams of carbon dioxide.

Most candles are made of paraffin wax, which is a hydrocarbon with the general formula CnH2n+2. Let's assume that we are dealing with a simple hydrocarbon, such as C25H52 (a common component of paraffin wax).

During combustion, the hydrocarbon reacts with oxygen (O2) to produce carbon dioxide (CO2) and water (H2O). The balanced chemical equation for the combustion of C25H52 is:

C25H52 + 38O2 → 25CO2 + 26H2O

To find the grams of CO2 produced, we need to know the mass of C25H52 that is combusted. For example, let's say we have 1 mole of C25H52 (molecular weight = 25*12.01 + 52*1.01 = 352.76 g/mol).

From the balanced equation, 1 mole of C25H52 produces 25 moles of CO2. The molecular weight of CO2 is 12.01 (C) + 2*16.00 (O) = 44.01 g/mol. So, the mass of CO2 produced from 1 mole of C25H52 is:

25 moles CO2 * 44.01 g/mol = 1100.25 grams of CO2

So, in this example, the combustion of 1 mole (352.76 grams) of C25H52 from a candle produces 1100.25 grams of carbon dioxide.

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Answer:

positive charge

Explanation:

protons are the positive chargers of any chemical reaction unlike neutron which are just the neutral part

Answer:

Positive charge

Explanation:

Electrons are Negative charge

Reflecting telescopes are preferred for scientific research because they are better suited for gathering large amounts of light and producing high-quality images. However, refracting telescopes are still popular for amateur astronomers and for viewing objects on Earth.

Reflecting telescopes are different from refracting telescopes because reflecting telescopes use mirrors, whereas refracting telescopes use lenses. The reflecting telescope was invented in 1668 by Sir Isaac Newton, and it has since become one of the most popular types of telescopes.
Reflecting telescopes use a mirror to gather and focus light, while refracting telescopes use a lens to do the same thing. Reflecting telescopes can be made much larger than refracting telescopes because it is easier to make large mirrors than it is to make large lenses. The mirror in a reflecting telescope is placed at the back of the telescope, and it gathers and reflects light back to a secondary mirror, which then reflects the light to the eyepiece. The eyepiece is where the observer looks through the telescope.In contrast, the lens in a refracting telescope is placed at the front of the telescope, and it gathers and bends light as it passes through. The lens focuses the light onto an eyepiece at the back of the telescope. Refracting telescopes are generally smaller than reflecting telescopes because of the difficulty of making large lenses.
Another difference between reflecting and refracting telescopes is the way they are constructed. Reflecting telescopes have a simple tube that houses the mirrors and eyepiece, while refracting telescopes have a more complex design with a long tube that contains the lens and eyepiece.

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Answer:

149.09 g/mol GOOD LESSONS ♡

Answer:

The answer is 149.09 g/mol

Explanation:

I hope this helps!!

Given the partial record of the experiment, the information that should be recorded in the last column of the table is B. Time is taken by the glass surface to dry.

These are forces of attraction between atoms, molecules, and ions when they are placed close to each other.

Intermolecular forces are electrostatic in nature, and this means that they arise from the interaction between positively and negatively charged species.

Hence, an intermolecular force acts between molecules and their examples are London dispersion forces, dipole-dipole interaction, ion-dipole interaction, and van der Waals forces.

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The complete question

An experiment was conducted to determine if the intermolecular forces in two liquids affect their boiling points. Each liquid was sprayed on a paper towel. Each paper towel was wiped across a glass table to moisten the surface. The table shows a partial record of the experiment.

Experimental Record

Liquid Intermolecular Forces ?

А relatively strong

B relatively weak

What information should be recorded in the last column of the table?

Time is taken by the liquids to start boiling

Time is taken by the glass surface to dry

The volume of liquid required to moisten the paper towels

Time taken by the paper towels to become completely moist

The solution at pH 6 is 10 times more acidic than the solution at pH 7.

The solution at pH 11 is 40 times more basic than the solution at pH 7.

Hydronium ion concentration at pH 8 = \(1 * 10^-6\)M

Hydronium ion concentration of pH 7 = \(1 * 10^-7\) M

Thus we have;\(1 * 10^-6 M/1 * 10^-7 M\) = 10

At pH 7, pOH = 7 and hydroxide ion concentration = \(1 * 10^-7\) M

At pH 11, pOH = 3 and the hydroxide ion concentration = \(1 * 10^-3\) M

We then have that; \(1 * 10^-3 M/ 1 * 10^-7\) M = 40

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In order to calculate the percent ionization of HA in a 0.010 M solution, we need to know the value of the acid dissociation constant (Ka) of the acid HA. Once we have that value, we can use the equation for Ka to determine the concentration of H+ ions and A- ions produced by the dissociation of the acid.

Then, we can calculate the percent ionization of HA using the following equation:% Ionization = (concentration of H+ ions produced / initial concentration of HA) x 100Let's assume that the value of Ka for the acid HA is 1.5 x 10^-5.

The equation for the dissociation of HA is:HA ⇌ H+ + A-At equilibrium, we can assume that the initial concentration of HA (0.010 M) is equal to the concentration of HA that remains undissociated.

Let x be the concentration of H+ ions and A- ions produced by the dissociation of HA.

Then, we can write the following equilibrium expression:Ka = [H+][A-] / [HA]1.5 x 10^-5 = x²/ 0.010Solving for x gives:x = 0.0011 M

This means that the concentration of H+ ions and A- ions produced by the dissociation of HA is 0.0011 M.

Using this information, we can now calculate the percent ionization of HA:% Ionization = (0.0011 M / 0.010 M) x 100%

Ionization = 11%Therefore, the percent ionization of HA in a 0.010 M solution is 11%.

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The purpose of the preparatory reaction is to break down pyruvate (C₃H₃O₃) into acetyl CoA (C₂H₃OCoA) so it can enter the citric acid cycle.

During cellular respiration, the preparatory reaction, also known as pyruvate decarboxylation, occurs in the mitochondria. Its purpose is to convert the three-carbon pyruvate molecule (C₃H₃O₃) produced during glycolysis into a two-carbon acetyl CoA (C₂H₃OCoA) molecule.

The preparatory reaction involves the removal of one carbon dioxide molecule (CO₂) from pyruvate, which results in the formation of acetyl CoA. Additionally, a high-energy electron carrier molecule called NADH is produced during this process.

The resulting acetyl CoA molecule serves as the entry point for the citric acid cycle, also known as the Krebs cycle or TCA cycle. In the citric acid cycle, acetyl CoA combines with a four-carbon molecule to form a six-carbon compound, initiating a series of enzymatic reactions that ultimately lead to the production of ATP, high-energy electron carriers (NADH and FADH₂), and carbon dioxide (CO₂).

Thus, the preparatory reaction is a crucial step in cellular respiration, allowing the efficient utilization of pyruvate and the subsequent production of energy through the citric acid cycle.

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Answer:

Electric charges produce electric fields

Explanation: