what are the correct coefficients if the law of conservation of mass is applied to the decomposition of solid ammonium nitrite to nitrogen gas and liquid water?

1.643 g mass of acid has been dissolved

Molarity shows the number of moles of solute in every 1 liter of solute or mmol in each ml of solution

\(\large \boxed {\bold {M ~ = ~ \dfrac {n} {V}}}\)

Where

M = Molarity

n = number of moles of solute

V = Volume of solution

Molarity of HCl solution = 0.3 M

Volume of HCl solution = 150 ml=0.15 L

So moles of HCl :

\(\tt n=M\times V\\\\n=0.3\times 0.15\\\\n=0.045\)

mass of HCl (MW=36.5 g/mol) :

\(\tt mass=moles\times MW\\\\mass=0.045\times 36.5\\\\mass=1.643~g\)

Answer:

 a supply of electric charges which are free to flow, some form of push to move the charges through the circuit and a pathway to carry the charges.

Explanation:

There's your answer have a good day

Answer:

Neutron and Nucleus

Explanation:

Because isotopes are each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei.

Answer:

The magnesium atom is larger.

Explanation:

The magnesium atom is larger because it is on the left side of the Periodic Table (period 3 and group 2) where the atomic radius is larger.

Atomic radius is the distance from the center of the nucleus of an atom to the most external electron shell.

The greater the columbic attractions, the closer the protons in the nucleus are to the electrons in the outer layers, making the size of the atom smaller.

Answer:

C. Chemical reactions may have deteriorated the rubber

Explanation:

A tire ages with time and most of the time this happens due to chemical reactions in the rubber parts. This could happen faster due to heat and sun.

As a tire is deteriorating or aging, a chemical change happens. What happens is that more chemical bonds are going to be produced with time between the molecules. We call this the process of oxidation. This actually bad for the tire, because the rubber would turn out to be stuffs d strong causing the tires thread to separate and also disintegration would occur.

Answer:

To determine the age of the ancient cloth, we can use the concept of radioactive decay and the half-life of Carbon-14.

Carbon-14 is a radioactive isotope of carbon, which decays over time into nitrogen-14 through beta decay. The half-life of Carbon-14 is 5614 years, which means that after 5614 years, half of the original amount of Carbon-14 in a sample will have decayed.

In this case, the cloth contains only ¼ of its original Carbon-14. This means that three half-lives have passed since the cloth was first created, as each half-life reduces the amount of Carbon-14 by half.

To determine the age of the cloth, we can use the following formula:

N = N0(1/2)^t/T

where N is the current amount of Carbon-14 in the cloth, N0 is the original amount of Carbon-14 in the cloth, t is the time that has passed, and T is the half-life of Carbon-14.

We know that N = ¼ N0, and T = 5614 years. Plugging these values into the formula, we get:

¼ N0 = N0(1/2)^(3/T)

Solving for t, we get:

t = (3/T) * log(2)

Substituting in T = 5614 years, we get:

t = (3/5614) * log(2) ≈ 1,684 years

Therefore, the cloth is approximately 1,684 years old.

In summary, we can use the concept of radioactive decay and the half-life of Carbon-14 to determine the age of the ancient cloth. By knowing the current amount of Carbon-14 in the cloth, we can calculate the time that has passed since it was first created using a simple formula. In this case, the cloth is approximately 1,684 years old.

The volume of insulation material required is approximately 0.003606 cubic meters (m³).

To calculate the volume of insulation material, we can subtract the volume of the inner pipe (original pipe) from the volume of the outer pipe (original pipe + insulation).

Given:

Length of the pipe, L = 10 m

Radius of the pipe, r = 7 cm = 0.07 m

Thickness of the insulation, dr = 2 mm = 0.002 m

The outer radius of the larger pipe is R = r + dr.

Using the formula for the volume of a cylinder, V = π(R² - r²)L, we can substitute the values and calculate:

V = π((0.07 + 0.002)² - 0.07²) × 10

V ≈ 3.606 × 10⁻³ m³

Therefore, the volume of insulation material required is approximately 0.003606 m³ (cubic meters).

Learn more about cylinder volumes from the given link

https://brainly.com/question/28058531

#SPJ11.

The answer is (c) HIO.

The acidity of binary acids (containing only two elements) generally increases as the electronegativity of the element other than hydrogen increases. Among the given options, HI has the highest electronegativity of the other element, followed by HNO2, HF, and HONH2. However, HIO has the lowest electronegativity of the other element, which makes it the most acidic among the given options. Therefore, the 1.0 M solution of HIO will have the lowest pH.

TO KNOW MORE ABOUT The acidity of binary acids  CLICK THIS LINK -

brainly.com/question/1515003

#SPJ11

Answer:

C.  physical

Explanation:

A mixture is a physical combination. Mixtures are combinations of compounds and molecules without any chemical reaction taking place.

Mixtures have the following properties:

Answer:

If mass remains the same while the volume of a substance changes, the density of the substance will also change.

Answer:

BELOW

Explanation:

If mass remains the same while the volume of a substance decreases the density of the substance will increase.

The concentration of urea in weight-percent 6.50%, in mole fraction is 0.0206 and in the concentration of urea in the solution in molarity is 1.12 M.

a) To express the concentration of urea in weight-percent:

First, we need to calculate the total mass of the solution:

Total mass = mass of solute + mass of solvent = 66.0 g + 950 g = 1016.0 g

Then, we can calculate the weight-percent concentration of urea:

Weight-percent = (mass of solute/total mass) x 100%

Weight-percent = (66.0 g/1016.0 g) x 100%

Weight-percent = 6.50%

Therefore, the concentration of urea in the solution in weight-percent is 6.50%.

b) To express the concentration of urea in mole fraction:

First, we need to calculate the number of moles of urea:

Number of moles = mass of solute/molar mass of urea

Molar mass of urea = 2(14.01 g/mol) + 1(12.01 g/mol) + 1(16.00 g/mol) = 60.06 g/mol

Number of moles = 66.0 g/60.06 g/mol = 1.099 mol

Then, we can calculate the mole fraction of urea:

Mole fraction = moles of solute/(moles of solute + moles of solvent)

Moles of solvent = mass of solvent/molar mass of water = 950 g/18.02 g/mol = 52.71 mol

Mole fraction = 1.099/(1.099 + 52.71) = 0.0206

Therefore, the concentration of urea in the solution in mole fraction is 0.0206.

c) To express the concentration of urea in molarity:

Molarity = moles of solute/volume of solution in liters

Volume of solution = mass of solute + mass of solvent/density of solution = (66.0 g + 950 g)/1.018 g/mL = 978.4 mL = 0.9784 L

Molarity = 1.099 mol/0.9784 L = 1.12 M

Therefore, the concentration of urea in the solution in molarity is 1.12 M.

Exercise:

To compare the concentrations of 0.50 M NaCl and 0.25 M SrCl2 in µg/mL, we need to calculate the number of micrograms of each salt per milliliter of solution:

For 0.50 M NaCl:

Molar mass of NaCl = 22.99 g/mol + 35.45 g/mol = 58.44 g/mol

Concentration in µg/mL = 0.50 mol/L x 58.44 g/mol x 1000 µg/mg = 29,220 µg/mL

For 0.25 M SrCl2:

Molar mass of SrCl2 = 87.62 g/mol + 2(35.45 g/mol) = 198.52 g/mol

Concentration in µg/mL = 0.25 mol/L x 198.52 g/mol x 1000 µg/mg = 49,630 µg/mL

Therefore, the concentration of 0.25 M SrCl2 is larger than the concentration of 0.50 M NaCl when expressed in µg/mL.

Learn more on molarity here;

https://brainly.com/question/26873446

#SPJ1

In the Lewis structure of methanol (CH3OH), the OH group is placed on the outside because it is an important functional group that influences the chemical properties and reactivity of the molecule.

The Lewis structure is a representation of a molecule that shows the arrangement of atoms and valence electrons. In methanol, carbon (C) is the central atom bonded to three hydrogen (H) atoms and one oxygen (O) atom. The oxygen atom forms a single bond with carbon and also has two lone pairs of electrons.

The placement of the OH group (hydroxyl group) on the outside of the Lewis structure is significant because it determines the chemical behavior of methanol. The OH group consists of an oxygen atom bonded to a hydrogen atom and represents the presence of an alcohol functional group.

In organic chemistry, functional groups are specific arrangements of atoms within a molecule that give rise to characteristic chemical reactions and properties. The presence and position of functional groups can greatly influence the behavior and reactivity of a compound. In the case of methanol, the hydroxyl group provides the molecule with its characteristic properties.

know more about valence electrons here:

https://brainly.com/question/371590

#SPJ8

Hydraulic conductivity, also known as permeability, is a property of porous materials that describes their ability to transmit fluid (typically water) through them. The hydraulic conductivity (K) for the given parameters is approximately 0.1667 m/s.

It represents the ease with which water can flow through a saturated medium under a hydraulic gradient. Hydraulic conductivity is influenced by various factors such as the properties of the porous medium (e.g., particle size, shape, and arrangement), the fluid viscosity, and the pressure gradient. It is commonly expressed in units of velocity, such as meters per second (m/s) or centimeters per second (cm/s).

To calculate the hydraulic conductivity (K) using the given parameters, let's substitute the values into the equation:

\(K = (0.4 * 10^{-3}) / ((\pi * (0.085 / 2)^2) * (0.12 / 0.18))\)

First, we can simplify the expression inside the parentheses:

\(K = (0.4 * 10^{-3}) / ((\pi * (0.0425)^2) * (0.12 / 0.18))\\K = (0.4 * 10^{-3}) / ((\pi * 0.0018025) * (0.12 / 0.18))\\K = (0.4 * 10^{-3}) / (0.0035962 * 0.6667)\\K = (0.4 * 10^{-3}) / 0.0023975\\\\K = 0.1667 m/s\)

Therefore, the hydraulic conductivity (K) for the given parameters is approximately 0.1667 m/s.

For more details regarding hydraulic conductivity, visit:

https://brainly.com/question/31920573

#SPJ4

Answer: C

Explanation:

Answer:

12

Explanation:

An element reacts with chlorine gas to form a compound whose formula is XCl₄. if the percent mass of chlorine is 74.8 % in this compound,  the identity of X is Ti, titanium.

The formula of the compound is XCl₄.

The molar mass of the chlorine = 35.5 g/mol

For 4 mol Cl = 4 × 35.5

                     = 142 g

The mass of XCl₄ = 142 × (100 / 74.8)

                             = 189.8 g/mol

The molar mass of the X = 189.8 - 142

                                          = 47.8 g/mol

The molar mass of the titanium id 47.8 g/mol. Therefore , the identity of X is Ti.

To learn more about compound here

https://brainly.com/question/20714754

#SPJ4

Answer:

Two (2) electron pairs

Explanation:

The sharing of electron pairs by atoms forms a type of bond called COVALENT bond. Atoms that form covalent bonding (share electrons) do so in order to fill their outermost electron shells, hence, gain chemical stability.

However, when two atoms like carbon share TWO PAIRS of electrons with each other, a DOUBLE BOND is formed. An example is the double bond formed in Ethylene (2HC=CH2). A total of four valence electrons (a pair from each carbon) are shared between the two carbon atoms.

a. The breakdown voltage of air is a function of pressure and air gap spacing.

b. The minimum breakdown voltage occurs when the applied voltage reaches a critical value, which depends on the pressure and air gap spacing.

c. The minimum breakdown voltage occurs at atmospheric pressure (1 atm).

d. The minimum breakdown voltage occurs when the air gap spacing is 1 mm.

e. Gaseous insulation is preferred over liquid or solid insulation because it is more reliable, has higher dielectric strength, and is less likely to become contaminated or corroded. Additionally, gaseous insulation can be used in a wider range of operating temperatures.

For more questions like Breakdown voltage click the link below: https://brainly.com/question/22078893

#SPJ4

Balanced chemical equation is :

\(N_2(g)+O_2(g)-->2NO(g)\)

It is given that the equation is in equilibrium.

We need to find what will happen if we add more \(N_2\) is added .

By Le Chatelier's principle :

Changing the concentration of a chemical will shift the equilibrium to the side that would counter that change in concentration.

It means production of the side where content is added will decrease and concentration on other side will increase .

So , more NO would form .

Therefore, option B. is correct.

Hence, this is the required solution.

The study of chemicals is called chemistry.

The correct answer is B.

According to the principle, the reaction goes from the higher side to the lower side.

According to the question, N2 is added to the reaction which will lead to an increase in the amount of N2 in the reactant.

More amount in reactant will lead to the formation of more product and the in the equation more NO will form.

Hence, the correct answer is B that is More No would form.

For more information, refer to the link:-

https://brainly.com/question/25305623

The hydronium ion concentration in lemon juice at a pH of 2.40 is approximately 0.00398 M.

The pH scale measures the acidity or basicity of a solution. The lower the pH, the more acidic the solution is. The pH scale ranges from 0 to 14, with 7 being neutral. Lemon juice has a pH of approximately 2.40, which is considered highly acidic. The hydronium ion concentration (H3O+) can be calculated using the equation pH = -log[H3O+]. Rearranging the equation gives [H3O+] = 10^-pH. Substituting pH = 2.40 gives [H3O+] = 10^-2.40 = 0.00398 M.

At a pH of 2.40, the hydronium ion concentration in lemon juice is closest to 0.00398 M.

1. Recall the formula for pH: pH = -log[H₃O⁺], where H₃O⁺ represents the hydronium ion concentration.
2. To find the hydronium ion concentration, rearrange the formula: H₃O⁺ = 10^(-pH).
3. Plug in the pH value of 2.40: H₃O⁺ = 10^(-2.40).
4. Calculate the hydronium ion concentration: H₃O⁺ ≈ 3.98 x \(10^{-3}\) M.

At a pH of 2.40, the hydronium ion concentration in lemon juice is approximately 3.98 x \(10^{-3}\)M.

To know more about concentration, visit;

https://brainly.com/question/26255204

#SPJ11

we need 487.09 mL of Compound A to obtain 12 mmol,

Determine the mass of 12 mmol of Compound A using its molecular weight:

mass = 12 mmol x 32.04 g/mol = 384.48 g

Use the density of Compound A to convert the mass to volume:

volume = mass / density = 384.48 g / 0.79 g/mL = 487.09 mL

A compound refers to a substance that is composed of two or more different elements chemically bonded together. The atoms of these elements are held together by chemical bonds such as covalent or ionic bonds, forming a distinct and unique chemical entity. Compounds have properties that are different from the elements they are composed of, and their properties are determined by the types of atoms present, the arrangement of atoms, and the strength and type of bonds between the atoms.

For example, water is a compound made up of two hydrogen atoms and one oxygen atom, bonded together by covalent bonds. The properties of water, such as its boiling and freezing points, its density, and its ability to dissolve other substances, are unique to water and are a result of its chemical composition and structure.

To learn more about Compound visit here:

brainly.com/question/13516179

#SPJ4

Answerl

see explanation

Explanation:

Question

4.

How many grams would 0 .50 moles of Mg be?

Mg has  an atomic weight of 24 so 1 mole of Mg weighs 24 gms

0.50 moles weigh 0.50 X24gm = 12 gm                

5.

10 moles of Al = ? atoms

1 mole = 6.02 X10^23 atoms ...Avogadros number

10 moles is 10 X6.02X10^23 = 6.02X10^24

6.

How many atoms are in 10 moles of Zinc?

a mole is Avogadros number

same as 10 moles of Al,10 moles of Zn=  6.02 X10^24 atoms

7.

If you had 3,5 x 10 - atoms of carbon how many grams would you have?

8.

Given 100g of C = ? atoms

Carbon has an atomic of 12  100 gm of C are 100/12 = 8.33 moles of C

each mole comtains Avogadros number so there are

8.33 X 6.02 X10^23 = 5.01 X10^24 atoms of C

Histones can be covalently modified in various ways. The amino acids near the N-terminal ends of histones are typically modified. The principal chemical modifications to histones are the addition of phosphate or acetyl group. Histone modifications occur at specific amino acids of histones H2A, H2, H3 and H4.

The shorthand nomenclature of H3K9ac describes that the lysine at position 9 of histone 3 has an acetyl group. Methylation can also occur at specific lysine residues such as H3K9me and H3K27me. These modifications can affect the structure of chromatin, leading to changes in gene expression and other cellular processes. Overall, histone modifications play a critical role in regulating gene expression and maintaining cellular homeostasis.

To know more about Histones  visit :

https://brainly.com/question/31681646

#SPJ11

The specific measurement that will be affected is the volume of gas collected in the graduated cylinder. Since not all the gas was caught, the volume measured will be less than the actual volume of gas released. This will not change the molar mass calculation.

The molar mass is calculated by using the mass of the gas and the volume of the gas collected. Even though the volume measured was less than the actual volume, the mass of the gas collected should still be accurate. Therefore, the molar mass calculation should not be affected.
Hi! I'm happy to help with your question.

a. The specific measurement that will be affected is the volume of gas collected in the graduated cylinder.

b. This mistake will likely result in a decrease in the calculated molar mass. Since the volume of gas collected is lower than it should be, the molar mass calculation will be based on a smaller amount of gas, leading to a lower value than the actual molar mass.

To know more about molar mass calculation.  click here:

brainly.in/question/15629812

#SPJ11

Answer:

region 2 and region 3

Explanation:

you can tell by the color of the land my friends^^

Answer:

2, 3 They are closest to the equator, and the equator marks to hottest places on earth.

Explanation:

I hope this helps you.

Answer:

Warmer air can hold more water vapor than colder air.

Explanation:

Weather can be defined as the atmospheric conditions of a particular area over a short period of time.

The elements of weather include precipitation, wind, temperature, atmospheric pressure, relative humidity, cloud, and wind speed.

Temperature can be defined as a measure of the degree of coldness or hotness of a physical object (body).

On the other hand, humidity refers to the concentration (amount) of water vapor that is present in the air. It is high when there's a lot of water vapor in the air and low when the level of water vapor is small.

The relationship between air temperature and humidity is that warmer air can hold more water vapor than colder air because as the air cools, its molecules move closer together while the molecules move farther apart as the air become hot.

Additionally, at constant humidity, relative humidity is inversely proportional to temperature i.e as the temperature decreases, relative humidity increases.

Answer:B. How much nitric acid solution is present?

Explanation:

Answer:

A. What is the concentration of nitric acid?

Explanation:

Titrations are used to find the unknown concentration of a substance as the phenolphthalein indicator helps to indicate when there is enough base to neutralize the acid.

Using this information along with a chemical formula it is possible to work out the unknown concentration of the acid with the known volume you used of the base.

Hope this helps!

Gallons of brass would weigh 4.36 grams and cost 76.9 cents, or $3.54 in total.

0.5248 gallons of brass would cost $3.54. This is based on the fact that 1 gallon of brass would weigh 8.47 grams and cost $1.74 per pound, or 17.4 cents per gram.

Therefore, 0.5248 gallons of brass would weigh 4.36 grams and cost 76.9 cents, or $3.54 in total.

Brass is a popular metal alloy used in a wide range of applications, from plumbing fixtures to musical instruments. It is made up of copper and zinc, and its properties depend on the proportions of these elements.

Brass has good corrosion resistance, strength, and a pleasing appearance. Additionally, it is relatively easy to machine and form, making it a popular choice for many products. It is also used in many coins and medals, as it is a relatively inexpensive metal.

Learn more about copper and zinc metal alloy:

https://brainly.com/question/29080001

#SPJ4