Enter the cycle number, n, in the x column and the number of radioactive atoms in the y column. When you finish, resize the window.

475 g is the correct response to the query. This is true because the combined mass of two solutions with masses of 450 g and 350 g equals 800 g. 125 g of solid crystals are created and fall to the bottom of the container as a result of a chemical reaction.

As a result, the mass of the residual solution is equal to 475 g, or 800 g less 125 g. It is significant to observe that the masses of the two solutions that were combined originally do not equal those of the solid crystals or the leftover solution.

This is because the two solutions' chemical reaction when combined results in a transition of the matter that is resulting in the production of a new substance.

Learn more about   mass  at:

https://brainly.com/question/11954533

#SPJ1

The balanced chemical equation is 3 Sr(OH)₂ + Al₂(SO₄)₃\(\rightarrow\) 3 SrSO₄ + 2 Al(OH)₃.

Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.

The first chemical equation was put forth by Jean Beguin in 1615.By making use of chemical equations the direction of reaction ,state of reactants and products can be stated. In the chemical equations even the temperature to be maintained and catalyst can be mentioned.

Learn more about chemical equation,here:

https://brainly.com/question/28294176

#SPJ1

The frequency of the radiation is equal to \(7.17 \times 10^{19}\) Hertz.

Given the following data:

To find the frequency of this radiation, we would use the Planck-Einstein equation.

Mathematically, the Planck-Einstein relation is given by the formula:

\(E = hf\)

Where:

Substituting the given parameters into the formula, we have;

\(4.75 \times 10^{-14} = 6.626 \times 10^{-34} \times F\\\\F = \frac{4.75 \times 10^{-14}}{6.626 \times 10^{-34}}\)

Frequency, F = \(7.17 \times 10^{19}\) Hertz

Read more: https://brainly.com/question/16901506

The growth of the new plant depicts the asexual reproduction characteristic. The characteristic that describes the growth of the new plant in Stephan's mother cutting a twig from a rose bush and planting it in the soil is asexual reproduction.

Asexual reproduction is the mode of reproduction by which organisms generate offspring that are identical to the parent's without the fusion of gametes. Asexual reproduction is a type of reproduction in which the offspring is produced from a single parent.

The offspring created are clones of the parent plant, meaning they are identical to the parent.The new plant in Stephan’s mother cutting a twig from a rose bush and planting it in the soil depicts the process of asexual reproduction, which is the ability of a plant to reproduce without seeds. In asexual reproduction, plants can reproduce vegetatively by cloning themselves using their roots, bulbs, or stems.

Know more about    characteristic  here:

https://brainly.com/question/28790299

#SPJ8

The mass in grams of 4.60 x 10^23 atoms is approximately 9.17 g.

To find the mass in grams of 4.60 x 10^23 atoms, we need to consider the molar mass and Avogadro's number. Avogadro's number (6.022 x 10^23) represents the number of atoms or molecules in one mole of a substance.

First, we need to determine the molar mass of the substance in question. Let's assume we are dealing with a specific element, such as carbon (C), which has a molar mass of approximately 12.01 g/mol.

To calculate the mass in grams, we can use the following formula:

Mass (in grams) = (Number of atoms / Avogadro's number) x Molar mass

Substituting the given values:

Mass (in grams) = (4.60 x 10^23 atoms / 6.022 x 10^23) x 12.01 g/mol

Calculating the expression:

Mass (in grams) = (0.763 mol) x 12.01 g/mol

Mass (in grams) = 9.17 g

For such more questions on atoms

https://brainly.com/question/6258301

#SPJ8

Answer: calcium ion

Explanation:

Answer:

read a lot and understand what you read

do practicals

Answer:

D; none of the above

Explanation:

Binary ionic compounds are composed of one metal and one nonmental.The metals are always the first element whereas the nonmetals are the second element.

Answer: Sodium fluoride

Mass of Hydrogen atoms : 18 g

Given

73 gram of HCl

144gram of H₂O

Required

Mass (gram) atom of Hydrogen

Solution

H atoms are in 2 compounds, H₂O and HCl, so we calculate their mass in each compound

\(\tt \dfrac{1}{36.5}\times 73=2~g\)

mass H in HCl :

\(\tt \dfrac{2}{18}\times 144=16~g\)

total mass = 2 g+ 16 g = 18 g

Answer:

Lithium selenide Lithium selenide (Li2Se) 12136-60-6 Dilithium selenide lithium selenidolithium

Molecular Weight 92.9 g/mol

Dates Modify 2020-11-15 Create 2005-08-08

Answer:

Lithium is +1 and Selenium is -2, so Li2Se (Lithium Selenide).

11.nicotinamid dinucleotid

12.nicotinamid dinucleotid phosphate

13.nicotinamid dinucleotid phosphate hydrogen

14.adenosine diphosphate

15.adenoside triphosphate

The gas moving the slowest would be Argon (Ar). The speed of a gas molecule is determined by its temperature, which is related to its average kinetic energy.

The gas moving the slowest would be Argon (Ar). The speed of a gas molecule is determined by its temperature, which is related to its average kinetic energy. In general, the heavier a gas molecule is, the slower it will move, as it takes more energy to get it moving. Among the gases listed, Argon has the heaviest molecular weight and therefore would be expected to move the slowest. Helium (He) has the lightest molecular weight and would be expected to move the fastest, followed by Neon (Ne), Krypton (Kr), and Argon (Ar) in order of increasing molecular weight.

Learn more about gases here: brainly.com/question/14812509

#SPJ4

Answer:

It's because they aren't destroyed they're just rearranged differently to create different products. There's like a name for this. It's something like the law of conservation energy. But the reason is mass cannot be created nor can it be destroyed.

Answer:

Atoms don’t appear or disappear during the reaction. Instead, they get rearranged.

Explanation:

Exact answer from Plato/Edmentum!! :)

Answer:

4.71 g of sodium and 7.25 g of chlorine

Explanation:

Note: The question is incomplete. the complete question is given below:

Two samples of sodium chloride with different masses were decomposed into their constituent elements. One sample produced 2.55 g of sodium and 3.93 g of chlorine. Being consistent with the law of constant composition, also called the law of definite proportions or law of definite composition, which set of masses could be the result of the decomposition of the other sample?

4.71 g of sodium and 3.30 g of chlorine

4.71 g of sodium and 7.25 g of chlorine

4.71 g of sodium and 1.31 g of chlorine

4.71 g of sodium and 13.7 g of chlorine

The law of definite proportions states that all pure samples of a particular chemical compound contain the same elements combined in the same proportion by mass.

This means that irrespective of the source of any sample of a pure chemical compound, the constituents elements are always combined in the same mass ratio.

In the first sample, the mass ratio of Sodium to chlorine is given below:

mass of sodium = 2.55 g

mass of chlorine = 3.93 g

mass ratio; sodium to chlorine = 2.55 / 3.93 = 0.65

From the set of masses give above, we can determine the result of the decomposition of the second sample.

4.71 g of sodium and 3.30 g of chlorine

mass ratio; sodium to chlorine = 4.71 / 3.30 = 1.43

4.71 g of sodium and 7.25 g of chlorine

mass ratio; sodium to chlorine = 4.71 / 7.25 = 0.65

4.71 g of sodium and 1.31 g of chlorine

mass ratio; sodium to chlorine = 4.71 / 1.31 = 3.59

4.71 g of sodium and 13.7 g of chlorine

mass ratio; sodium to chlorine = 4.71 / 13.7 = 0.34

From the results above, the correct set of masses for the second sample is 4.71 g of sodium and 7.25 g of chlorine

When fossil fuels burn, several forms of energy are produced, including:

Heat energy: The primary form of energy released during fossil fuel combustion is heat. Fossil fuels contain chemical energy stored for millions of years, and when they burn, this energy is released in the form of heat. The heat energy can be harnessed for various purposes, such as heating buildings or generating steam to drive turbines.

Light energy: Burning fossil fuels can also produce light energy in the form of flames or glowing embers. This light energy is a byproduct of combustion.

Mechanical energy: Heat generated by burning fossil fuels can be converted into mechanical energy. This is typically achieved by using heat to produce steam, which drives a turbine connected to a generator. The rotating turbine converts the heat energy into mechanical energy, which is further transformed into electrical energy.

Electrical energy: Through the process described above, burning fossil fuels can ultimately generate electrical energy. The mechanical energy produced by the turbine is converted into electrical energy by the generator. Electrical energy can power various devices, appliances, industries, and infrastructure.

It's critical to note that while burning fossil fuels can produce useful forms of energy, it also results in the release of carbon dioxide and other greenhouse gases. This contributes to climate change and environmental concerns. As a result, there is a global shift towards cleaner and renewable energy sources to mitigate these negative impacts.

Answer:

In this type of solution, perchloric acid is a strong acid which means that its conjugate base is extremely weak. As such, the solution of HClO4 H C l O 4 and NaClO4 N a C l O 4 is not a buffer solution.

6.02 x \(10^{20\) formula units of MgCl₂ is equal to 0.1 moles of MgCl₂.

To convert formula units of MgCl₂ to moles of MgCl₂, we need to use Avogadro's number, which relates the number of formula units to the number of moles.

Avogadro's number (NA) is approximately 6.022 x 10^23 formula units per mole.

Given that we have 6.02 x 10^20 formula units of MgCl₂, we can set up a conversion factor to convert to moles:

(6.02 x 10^20 formula units MgCl₂) * (1 mol MgCl₂ / (6.022 x 10^23 formula units MgCl₂))

The formula units of MgCl₂ cancel out, and we are left with moles of MgCl₂:

(6.02 x 10^20) * (1 mol / 6.022 x 10^23) = 0.1 mol

Therefore, 6.02 x 10^20 formula units of MgCl₂ is equal to 0.1 moles of MgCl₂.

It's important to note that this conversion assumes that each formula unit of MgCl₂ represents one mole of MgCl₂. This is based on the stoichiometry of the compound, where there is one mole of MgCl₂ for every one formula unit.

Additionally, this conversion is valid for any substance, not just MgCl₂, as long as you know the value of Avogadro's number and the number of formula units or particles you have.

For more such questions on MgCl₂ visit:

https://brainly.com/question/26311875

#SPJ8

Answer:

7.0

Explanation:

P1V1=P2V2 if temperature and moles are constant, which they appear to be

3.5*2.5=1.25x

x=8.75/1.25

x=7

Answer:

Chemical is best answer

Explanation:

Mark me as brilliant and thank you

Please

Answer:

chemical is the  answer

Explanation:

Answer:

c. or b._____________

Explanation:

correct me

Answer:

Velocity

Explanation:

Synonyms are words/phrases that mean the exact or nearly exact same in meaning. Velocity, pace, and speed all mean close to the same thing as far as the rate in which something is moving.

Answer:

18.4g

Explanation:

Given parameters:

Percentage composition:

49.47%  carbon

5.19% H

28.8% N

16.48% O

Mass of caffeine   = 37.1g

Unknown:

Mass of carbon  = ?

Solution:

To find the mass of the carbon:

  Mass of carbon = percentage composition of carbon x mass of caffeine

 Mass of carbon  = 49.47% x 37.1  = 18.4g

Answer:

a, b and c

Explanation:

A - Ionic compounds have ionic bonds which are far more stronger than the intermolecular forces in molecular (covalent) compounds, so more energy is required to break the bonds, this having a higher boiling point

B - when ionic compounds are placed in water, they are attracted to water due to its dipole nature, so the water molecules attract the positive and negative ions from the compound, breaking the ions apart in a process called dissociation

C - NaCl is an ionic compound as it consists of a metal (Na) and a non-metal (Cl) where Na loses an electron to form +1 ion and Cl gains that electron to form -1 ion. It is poor in conducting electricity when it is in the solid state as the ions are held in fixed positions and cannot move. They can only conduct electricity when molten or dissolved in solution as the ions are free to move around.

D - The first part of the sentence is right : The overall charge of an ionic compound has to be zero as the positive and negative ions are equal, which maintains its neutrality. In general, most compounds have good solubilty in water as water molecules are polar they can attract the positive and negative ions and break up the structure.

There are a few exceptions, for example ionic compounds that have highly polarising ions (are small and have a high charge) which water is unable to break apart the ions.

Answer:

C

Explanation:

Hope it helps!

When designing a scientific question, you should ensure the question is:

A scientific question is an inquiry that scientists examine via methods such as observation, experimentation or data collection leading to an answer.

They often require specific parameters for setting up experiments along with means for measuring outcomes or phenomenon under investigation while also needing testable results to establish validity. As such successful ones must possess traits like precision in defining boundaries within which observations will take place making them measurable so they may produce documented evidence supporting the validity of their findings

Learn about scientific question here https://brainly.com/question/1675602

#SPJ1

Answer:

0.804g of NaHCO₃ you must add

Explanation:

pKa of HCO₃⁻/CO₃²⁻ is 10.32.

It is possible to find pH of a buffer by using H-H equation, thus:

pH = pka + log [A⁻] / [HA]

Where [HA] is concentration of acid (HCO₃⁻) and [A⁻] is concentration of conjugate acid (CO₃²⁻).

Moles of CO₃²⁻ = K₂CO₃ are:

4.00g ₓ (1mol / 138.206g) = 0.0289 moles CO₃²⁻

Replacing:

10.80 = 10.32 + log [0.0289] / [HCO₃⁻]

[HCO₃⁻] = 0.009570 moles you need to add to obtain the desire pH

As molar mass of NaHCO₃ is 84.007g/mol, mass of NaHCO₃ is:

0.009570 moles ₓ (84.007g / mol) =

Answer:

Explanation:

Second dissociation of \(H_2CO_3\) is

\(HCO_3^-(aq) <-------> CO_3^2-(aq) + H^+\)

\(Ka = [CO_3^{2-}] [H+] / [HCO_3^-] \\\\= 4.7*10^{-11}\\\\pKa = -log(4.7 * 10^{-11}) \\\\= 10.33\)

\(pH = pKa + \frac{log([A-]}{[HA])}\\\\required pH = 10.80\\\\10.80 = 10.33 + \frac{log([A-]}{[HA])}\\\\\frac{log([A-]}{[HA])} \\\\= 0.47\\\\\frac{[A-]}{[HA]}\\\\ = 2.951\)

\([CO_3^{2-}] / [HCO_3^-] = 2.951\)

\([HCO_3^-] = [CO_3^{2-}]/2.951\)

moles of \(K_2CO_3\) = \(\frac{4}{138.206} = 0.028942mol\)

moles of \(CO_3^{2-}\) = \(0.028942mol\)

\([CO_3^{2-}]\) = \(\frac{0.028942}{500} * 1000 = 0.05788M\)

\([HCO_3^-]\) required = \(\frac{[CO32-]}{2.951} = \frac{0.05788}{2.951} = 0.01961M\)

moles of \(HCO_3^-\) ​​​​​required = \(\frac{0.01961}{1000} * 500 = 0.009805mol\)

moles \(NaHCO_3\) required = \(0.009805mol\)

Therefore,

mass of \(NaHCO_3\) required \(= 0.009805 * 84.007 = 0.8237g\)

For more information, visit

https://brainly.com/subject/chemistry

Answer: B.) -12.4

Explanation: This is because the sign of heat transfer is determined by the system's perspective. In this case, the system is releasing heat to the surroundings, which means that heat is flowing out of the system, making the heat transfer negative. The magnitude of the heat transfer is 12.4 J.

Answer:

its A

Explanation:

The only one that makes sense