A graduated cylinder contains 26 cm3 of water. an object with a mass of 21 grams and a volume of 15 cm3 is lowered into the water. what will the new water level be

Answer:

6.

Explanation:

2 sodium

1 silicon

3 oxygen

--------------

6 atoms

We would have the values as a x z 98, Sr, 38

Subatomic particles are particles that are smaller than atoms and make up the structure of atoms. They include three main types: protons, neutrons, and electrons.

We know that we can be able to obtain the subatomic particles by looking at the equation of the nuclear reaction that has been stated here.

Looking at the reaction;  233/92U + 10n → 133/51Sb + A/ZX + 3 10n

We can see that the charge has to be; 92 =51 + m + 3

m = 38

The mass = 234 = 133 + a + 3

a = 98

Thus a x z  = 98, Sr, 38

Learn more about subatomic particles:https://brainly.com/question/1527888

#SPJ4

Missing parts;

Identify the missing atom or subatomic particle, AZX, for the following reactions. Then, classify each nuclear reaction represented below as a fission or fusion reaction. (Enter your answer in the form A X Z .) (a) 23392U + 10n → 13351Sb + AZX + 3 10n

Explanation:

1.ca

2.H

3.O

.................

Answer:

The weak electrolyte is Aqueous acetic acid.

The answer is C.

The reactants are charcoal that is unlit + oxygen and the products are the burnt charcoal + energy.

So for every combustion reaction like this one, CxHy is the wood. So before you light the wood, it is actally a reactant together with oxygen, because without oxygen the wood will not burn. So under the influence of heat, wood produces substances like carbon dioxide and heat, the moment you see wood burning it it already producing products, CO2 and heat (which is the fire). This is a combustion reaction.

Combustion reaction is exothermic because it releases energy.

Answer:

compounds , because they're combined

Answer:

The answer is A.) Compounds

Explanation:

Compounds are when the atoms of elements combine. When combined it creates a compound.

Using Avogadro’s number, 0.33 moles of tin are present.

The number of particles (atoms or molecules) in each mole of a material is known as the Avogadro’s number. It's represented with a symbol \(N_A\).

Avogadro's number of molecules of that substance make up one mole of an atom, according to the mole concept.

1 mole = 6.02 x \(10^2^3\) atoms

Given:

No. of atoms of tin = 2.01 x \(10^2^3\)

Avogadro’s number, \(N_A\)= 6.02 x \(10^2^3\)

To find:

No. of moles, n = ?

Formula:

n = No. of atoms of tin / Avogadro’s number

Calculations:

n = 2.01 x \(10^2^3\) / 6.02 x \(10^2^3\)

n = 2.01 / 6.02

n = 0.33 moles

Result:

The number of moles present in 2.01 x \(10^2^3\) atoms of tin is 0.33 moles

Learn more about Avogadro’s number here:

https://brainly.com/question/1445383

#SPJ9

Answer:pu-239

Explanation:

Pu-239 is regarded as the radioisotope requires long-term storage as the method of disposal, to protect living things from radiation exposure over time

Disposal of radioactive nuclear waste is often regarded as a problem.

The waste sources are:

Disposal of bomb-grade plutonium is often difficult.

The longer lived isotopes are:

The storage of the longer lived elements is through containment for the next several thousand of years.

The control or management of radioactive waste is a hard, multifaceted procedure.

Learn more from

https://brainly.com/question/10125168

Answer:

Amount of NH3 in g = 0.0867 g

Explanation:

Molecular mass of

0.0051 mol has same no. of molecules in both NH3 and SF6.

Amount of NH3 in g = Mole × Molar mass

Molar mass of NH3 = 17.00 g/mol

Amount of NH3 in g = 0.0051 × 17.00

                                 = 0.0867 g

The mass of lead chloride (PbCl₂) precipitated is approximately 11.9 grams.

To determine the mass of lead chloride precipitated when 5g of sodium chloride solution reacts with lead trioxonitrate(V), we need to consider the balanced chemical equation for the reaction between sodium chloride (NaCl) and lead trioxonitrate(V) (Pb(NO₃)₂):

2NaCl + Pb(NO₃)₂ -> 2NaNO₃ + PbCl₂

From the balanced equation, we can see that 2 moles of NaCl react with 1 mole of Pb(NO₃)₂ to produce 1 mole of PbCl₂.

1 mole of PbCl₂ has a molar mass of:

1 atom of Pb = 207.2 g/mol

2 atoms of Cl = 2 x 35.45 g/mol = 70.9 g/mol

Therefore, the molar mass of PbCl₂ is 207.2 g/mol + 70.9 g/mol = 278.1 g/mol.

To calculate the mass of PbCl₂ precipitated, we need to convert the given mass of sodium chloride (5g) to moles. The molar mass of NaCl is 22.99 g/mol + 35.45 g/mol = 58.44 g/mol.

Using the equation:

moles = mass / molar mass,

moles of NaCl = 5g / 58.44 g/mol = 0.0856 mol.

According to the balanced equation, the stoichiometric ratio between NaCl and PbCl₂ is 2:1. Therefore, the moles of PbCl₂ formed will be half of the moles of NaCl.

moles of PbCl₂ = 0.0856 mol / 2 = 0.0428 mol.

Finally, we can calculate the mass of PbCl₂ precipitated using:

mass = moles x molar mass,

mass of PbCl₂ = 0.0428 mol x 278.1 g/mol = 11.9 g.

Therefore, the mass of lead chloride (PbCl₂) precipitated is approximately 11.9 grams.

for more questions on mass
https://brainly.com/question/24191825
#SPJ8

Answer:

C1 * V1 = C2 * V2

Explanation:

Where ‘C’ and ‘V’ refer to concentration and volume, ‘1’ and ‘2’ to solution 1 and 2 respectively. So, if ‘1’ refers to the HCl solution, we want to solve this equation for C1.

V1 = (C2*V2)/C1 = (0.4 * 50)/40 = 0.5 M

Answer:

135.80 g of Ag

Explanation:

\(40gCu *\frac{1mol Cu}{63.546g Cu} *\frac{2mol Ag}{1molCu} *\frac{107.868g Ag}{1mol Ag}\)

~ 135.80 g of Ag

Answer:

The cell theory claims these three components:

1. cell is the smallest functional unit of life: It can be observed under the microscope that cells have various type of molecules and organelles present and have adifferent functional role in the cell which explains that the cell is the smallest unit of life as its molecules or organelles can not carry the life process on their own.

2. All organisms are made up of cells: From bacteria and archaea to human and other life forms are made up of a single cell or organization of cells in a specific pattern it also can be observed by the microscopic of blood or other tissue or cell of an organism.

3. Arise from pre-existing cell: The cells are can be studied under a microscope during cell division where we can observe that new cells come from the pre existing cell by the cell division.

Valence electrons in non-metal occupy directional p-orbitals.

Metal valence electrons spread out into spherical s-orbitals.

Valence electrons can be defined as the number of electrons that are present in the outermost shell of an atom. Also, valence electrons are typically used to determine whether an atom or group of elements found in a periodic table can bond with others.

This ultimately implies that, valence electrons is a property is typically used to determine the chemical properties of chemical elements.

A sublevel can be defined as an energy level that is associated with the electrons found outside the atomic nucleus.

In Chemistry, there are four (4) types of sublevel and these include the following:

I. s-orbital (sublevel): it has one (1) orbital i.e 1s.

II. p-orbital (sublevel): it has three (3) orbitals.

III. d-orbital (sublevel): it has five (5) orbitals.

IV. f-orbital (sublevel): it has seven (7) orbitals.

Read more on orbitals and electrons here: https://brainly.com/question/11404939

#SPJ1

There are 210 kilocalories in a portion of food that contains 8 g protein, 10 g fat, and 22 g carbohydrate. The amount of vitamin C and water in the food does not contribute to the number of kilocalories, as they are not sources of energy.

Proteins are large, complex molecules that are made up of long chains of amino acids. They are essential for the growth, repair, and maintenance of tissues in the body, and are involved in a wide range of biological processes.

To calculate the number of kilocalories in a portion of food, we need to use the following formula:

Calories = (grams of protein x 4) + (grams of fat x 9) + (grams of carbohydrate x 4)

Using this formula, we can calculate the number of calories in the given portion of food:

Calories = (8 g protein x 4) + (10 g fat x 9) + (22 g carbohydrate x 4)

Calories = 32 + 90 + 88

Calories = 210 kcal

Therefore, in a portion of food that contains 8 g protein, 10 g fat, and 22 g carbohydrate there are 210 kilocalories.

Learn more about Proteins here:

https://brainly.com/question/30986280

#SPJ4

Answer: C, 0

Explanation: just a mere guess

Explanation:

ATOMIC THEORY

Lesson 1 - Page 5

J.J. Thomson

In 1897, English physicist J. J. Thomson (1856–1940) disproved Dalton’s idea that atoms are indivisible. When elements were excited by an electrical current, atoms break down into two parts. One of those parts is a negative tiny particle, which Thomson called a corpuscle in 1881. The term electron was introduced in 1891 by G. Johnstone Stoney (1826-1911) as a way to describe a “natural unit of electricity.” Thomson envisioned these negative charges embedded into positive charges, like an English plum pudding. The plums were the electrons and the pudding was the positive matter.

Thomson's idea of an atom did not survive very long. English physicist Ernest Rutherford (1871–1937) studied the effects of bombarding thin gold foil with alpha particles. Alpha particles are helium atoms that have lost their electrons and are positive. Rutherford’s model had a nucleus, which occupied a very small area toward the middle, and was positive. He used the term proton for the positive particles. However, his electrons were moving on the outside of the nucleus in no definable manner in his model.

A is Dalton's Model; B is Thomson;

and C is Ruthford's model of an atom

Hi! I'd be happy to help with your question regarding sodium bicarbonate during a reaction workup. Sodium bicarbonate solution is often added during a reaction workup to neutralize any acidic impurities present in the organic layer, which in turn aids in their removal.

When sodium bicarbonate (NaHCO₃, aq) reacts with an acidic impurity, it forms water (H₂O, l), carbon dioxide (CO₂, g), and sodium salt of the corresponding acid (NaX, aq, where X is the anion of the acid). The overall reaction can be written as:

NaHCO₃ (aq) + HX (org) → NaX (aq) + H₂O (l) + CO₂ (g)

The products, water, and carbon dioxide, are formed in the aqueous phase, while the sodium salt (NaX) remains dissolved in the aqueous layer. This separation allows for the organic layer to be easily extracted, effectively removing acidic impurities from the reaction mixture.

To summarize:
1. Sodium bicarbonate is added to neutralize acidic impurities.
2. The reaction between sodium bicarbonate and an acidic impurity forms water, carbon dioxide, and sodium salt.
3. The products separate into different layers, allowing for the removal of impurities from the organic layer.

Learn more about sodium bicarbonate  here: https://brainly.com/question/20693952

#SPJ11

Answer:

a chemical reaction

Explanation:

What has happened to the statue of liberty is that a chemical reaction has occurred to the materials making up this edifice.

The statue is made up of copper. On reacting with oxygen, it undergoes an oxidation.

This makes the copper to rust and decolorize.

It implies that copper has reacted with oxygen in air and possibly from water.

This gives a new product.

We know this because for most chemical changes, they give new products and are not easily reversible.

Resonance is defined as the delocalization of the electrons within the molecules. The molecules can be represented by the more than one lewis structure.

The  resonance structure is delocalization of the electrons in the molecule. The difference in lewis structure is in the position that is occupied by the pi bond and the p orbital electrons.

In the left lewis structure of the nitro methane the negative charge that is the extra p orbital electron on the lower oxygen will migrate to form the pi bond to the nitrogen atom and the electron are in the pi bond in between the nitrogen and the upper oxygen will migrates to the extra p orbital electron to the upper oxygen atom. The opposite will occurs in the right lewis structure.

To learn more about resonance here

https://brainly.com/question/29547999

#SPJ4

This question is incomplete, the complete question is :

Add curved arrows to both structures of nitromethane to show the delocalization of electron pairs needed to form the other resonance contributor.

Answer:

Solute

Explanation:

i just did the quiz

Answer:

Solute

Explanation:

Answer:

I think carbon.

Explanation:

............

Answer:

The process of breaking down stones or rocks into small pieces is called weathering.

Explanation:

Explanation:

refer the above attachment

Weathering is the breaking down or dissolving of rocks and minerals on Earths surface. Once a rock has been broken down, a process called erosion transports the bits of rock and minerals away. Water, acids, salt, plants, animals, and changes in temperature are all agents of weathering and erosion.

Types of Mechanical Weathering

Plant Activity. The roots of plants are very strong and can grow into the cracks in existing rocks. ...

Animal Activity. ...

Thermal Expansion. ...

Frost action. ...

Exfoliaton.

Answer:

qwertuyilolassddfhhjkllzxcvbnnnmetyio

H₃PO₃ could be the unknown substance.

NaOH and NH₃are all basic so they must not be the unknown solute since the solution is acidic.

CH₃COCH₃ is a nonelectrolyte, which means it does not dissociate into ions when it dissolves in water. Acetone must not be the unknown since the solution is weakly conducted.

The two remaining candidates, HNO₃ and H₃PO₃ are both acids. The unknown solution does not conduct electricity as well as a solution of NaCl of the same concentration, which means that the unknown acid must not dissociate to the same extent as NaCl. Both NaCl and HNO₃ (a strong acid) dissociate 100%. Thus, the unknown solute must be H₃PO₃, which is known to be a weak acid (doesn't dissociate 100%).

What is the H3PO3 name?

Phosphorous acid (or phosphonic acid (singular)) is the compound described by the formula H3PO3. This acid is diprotic (readily ionizes two protons), not tricrotic as might be suggested by this formula.

What are the two colors of litmus paper?

Litmus paper is a strip of paper extracted from lichens, which is dipped into a solution to determine if it is an acid or base. Litmus papers are available in two colors, red and blue. Acidic solutions will change the color of the blue litmus to red strips.

Thus, the unknown substance is H3PO3.

To know more about Phosphorous acid:

https://brainly.com/question/16047847

#SPJ4

Answer:

Biosphere

Explanation:

It is  B i think

To properly remove gloves, first, pull the gloves by the fingertips and then, pull on the outside of the glove on 1 side of the hand and remove it. Then insert a finger that has been removed from the glove between the interior edge of the second glove and the skin, and remove the second glove.

Sterile surgical gloves are gloves that are usually used by medical personnel to avoid patient droplets. The purpose of using Handscoon is to prevent cross-infection and prevent transmission of germs, used for surgical and surgical purposes.

When wearing and removing gloves, of course, there are special steps to avoid the spread of bacteria. The steps for removing gloves are:

First, pull the gloves by the fingertips and then, pull on the outside of the glove on 1 side of the hand and remove it. Then insert a finger that has been removed from the glove between the interior edge of the second glove and the skin, and remove the second glove.

Learn more about preparing to apply sterile gloves here :

https://brainly.com/question/28484317

#SPJ4

Electromagnetic radiation is reflected or absorbed mainly by several gases in the Earth's atmosphere, among the most important being water vapor, carbon dioxide, and ozone. Some radiation, such as visible light, largely passes (is transmitted) through the atmosphere.

a) A pH of 5 for river water near a factory does suggest a potential pollution problem. The normal pH range for most natural waters is around 6.5-8.5. pH values below 6.5 can indicate acidification, which can be caused by pollutants such as sulfur dioxide and nitrogen oxides from industrial activities, or from natural sources such as acid rain.

A pH of 5 is more acidic than most natural waters and could indicate the presence of acidic pollutants in the water.

Therefore, in terms of b) Other evidence that would be useful to consider before reaching a conclusion about whether the pH of 5 represents a pollution problem includes:

Read more about river water here:

https://brainly.com/question/19609890

#SPJ1