Base your answers to questions 1 and 2 on
the diagram below, which represents a solid material
of uniform composition.
2.0 cm
Density-2.7 g/cm³
-20 cm-
We
1. The mass of this piece of material is approximately
A) 32 g
Q4.4g
X) less
-3.0 cm
2. When this material is placed in a container of water, i
sinks to the bottom of the container. Compared to the
density of water, the density of this material is
B) greater
the same
B) 0.23 g
9.3 g

Answer:

C

Explanation:

When Beta decay happens, the atomic number of an element goes up, and that means there is an extra proton. A is not the answer because unstable atoms cause decay. B is also not correct because this is what happens in Beta decay: a neutron becomes a proton. D is not correct because an electron is actually emitted from the nucleus.

Answer:

The correct answer is B. An atom has many fewer protons than neutrons.

I just took the test.

Explanation:

All nine of the necessary amino acids that humans need are present in milk proteins.

Although the mammary gland produces the proteins in milk, 60% of the amino acids needed to make those proteins come from the cow's diet. So the milk from cows may also provide us with protein.

The dairy cow needs proteins for a variety of metabolic processes, including growth, lactation, and reproduction. The dairy cow needs proteins for a variety of metabolic processes, including growth, lactation, and reproduction. Crude protein is a popular term used to describe the protein content in feed (CP).

All elements of bodily health, reproduction, and most critically milk production in the dairy business depend on protein. The protein that the cow consumes may be divided into two types: rumen degradable protein (RDP) and rumen undegradable protein (RUP).

Learn more about milk proteins refer

https://brainly.com/question/1045900
#SPJ13

Answer:

Both are chemical changes and both are physical changes.

Explanation:

Milk can go sour in the fridge and I don't really know about the conserve mass one.

Answer:

I think the right answer was "because they have already formed bonds to become more stable"

Explanation:

the reason you got the question wrong was because not all unstable elements have to be bonded with a gas molecule. It could be a metal for example.

it's hard to find these unstable elements in natural nature because since they are so unstable, they can't "wait" so they form bonds as soon as they can when they get the chance.

nature isn't controlled by scientists too, so these unstable elements form bonds with almost anything possible when they have the chance to become more stable

Based on the electroplating process video:

Electroplating is the process by which a metal is used to coat the surface of another substance.

The process of electroplating is done in order to improve the quality of the material being coated as well as to make it more durable.

In the video, the copper coins were plated with zinc by dipping the coins into a solution of sodium zincate.

The sodium zincate is prepared by dissolving powdered zinc in a sodium hydroxide solution.

The undissolved zinc powder in the solution will form a fine film of zinc over the copper making it looks shiny like zinc.

The zinc-coated coin is then held over a bunsen flame until it turns shiny gold.

Learn more about electroplating at: https://brainly.com/question/3913850

#SPJ1

Identify each ingredient and output of this reaction as an acid or a basic. Right now, you're in a labeling module. switch off the quick navigation or explore mode, tab to the details, press space or enter to pick up, tab to move, and press space or enter to drop.

ch₃oh o − ↽ − − ⇀ ch₃o − h₂o answer bank.

A chemical reaction between an acid and a base is known as an acid-base response. It can be applied to calculate pH. These are known as the acid-base propositions, such as the Brnsted-Lowry acid-base statement, and they are essential generalizations of the response mechanisms and how they function when solving related problems.

Their importance is revealed when testing acid-base reactions for gaseous or liquid species, or when the acid or basic property may be less obvious. Antoine Lavoisier, a French pharmacist, gave the first of these generalizations somewhere around 1776.

It's important to suppose of the acid- base response models as propositions that round each other. For illustration, the current Lewis model has the broadest description of what an acid and base are, with the Brønsted- Lowry proposition being a subset of what acids and bases are, and the Arrhenius proposition being the most restrictive.

To learn more about acid and base click on given link below

https://brainly.com/question/9836972

#SPJ9

The pressure (in atm) of the carbon (IV) oxide, CO₂ gas collected, during the given experiment is 0.965 atm

We'll beging by obtaining the pressure (in torr) of the carbon (IV) oxide, CO₂ gas collected. This can be obtained as follow:

Pressure of CO₂ = (Pressure of lab) - (Vapour pressure of water at 21 ° C)

Pressure of CO₂ = 752 - 18.65

Pressure of CO₂ = 733.35 torr

Finally, we shall convert 733.35 torr to atm as illustrated below

We know that:

760 torr is equivalent to 1 atm

Therefore,

733.35 torr will be equivalent = (733.35 torr × 1 atm) / 760 torr

733.35 torr = 0.965 atm

Thus, from the above calculations, we can conclude that the pressure (in atm) is 0.965 atm

Learn more about conversion:

https://brainly.com/question/3161490

#SPJ1

The covalent compounds formed from the given elements are as follows:

Covalent compounds are compounds that are formed as a result of covalent bonds formed between atoms of different elements.

Covalent bonds are formed as a result of sharing of electrons between atoms of different elements usually non-metals.

Due to differences between the electronegativities of atoms of nom-metals, the electrons shared in covalent compounds are not always shared equally. Thus, several other intermolecular forces exist between molecules of covalent compounds.

Some of the intermolecular forces that exist in covalent compounds include:

Given the following elements: nitrogen, fluorine, oxygen, carbon, and hydrogen.

The covalent compounds that can be formed representing the given intermolecular forces are as follows:

Learn more about covalent compounds at: https://brainly.com/question/3447218

#SPJ1

Fe(C 5H 5) 2 describes the organometallic compound ferrocene. The molecule is a complex made up of a core iron atom and two cyclopentadienyl rings.

AlCl3 is the chemical formula for aluminum chloride, sometimes referred to as aluminum trichloride.

Acetic acid is the source of the acyl chloride known as acetyl chloride.  AcCl is a frequent way to shorten its formula.

"81.3%"

One mole of ferrocene combines with one mole of acetyl chloride in accordance with the reaction's stoichiometry to produce one mole of mono acetylferrocene.

The limiting reagent is the one that is minimally present. Ferrocene is the limiting agent as a result.

The limiting reagent controls how the product is formed. So,

In a reaction, one mole of ferrocene yields one mole of mono acetylferrocene.

reaction forms with 0.0005375 moles of ferrocene Mono acetylferrocene, 0.0005375 mole

0.0005375 moles of product were produced.

Mono acetylferrocene's molar mass is 228.07 g/mole.

Produced mono acetylferrocene mass equals moles times molecular weight, or 0.0005375 x 228.07 g, or 0.123 grammes, or 123 mg.

assuming a 100 mg experimental yield

% yield is equal to (Experimental Yield / Theoretical Yield) / 100, which equals (100/ 123) / 100, or 81.3%.

To know more about mono acetylferrocene, click on the link below:

https://brainly.com/question/14211561

#SPJ9

The density of the marble is  1.7kg/m³

Density is the amount of mass per unit of volume

Marcie fills a graduated cylinder with 15.0 mL of water (Vi) paul finds the mass of a marble to be 2.21g, then drops the marble into the graduated cylinder if the meniscus on the graduated cylinder is now at 16.3 mL (Vf)

We have to find density of the marble = ?

Volume = (Vi) -  (Vf) = 15.0 mL - 16.3 mL

Volume = 1.3mL

Mass =  2.21g

Density = mass/volume means ρ = m/V

Density = 2.21g /  1.3mL

Density = 1.7kg/m³

The density of the marble is  1.7kg/m³

Know more about density

https://brainly.com/question/17970912

#SPJ1

The Fischer Esterification method is used to accomplish this preparation of isopentyl acetate.

The Fischer esterification is an alternative esterification mechanism that uses an equilibrium process. It is standard procedure to use an excess of one of the reactants, often alcohol or acid, to alter the equilibrium in a way that facilitates the synthesis of esters. Since acetic acid is less costly and more readily removed than alcohol, we will use a lot of it in the current procedure.

Another strategy to trigger a reaction to its products is to remove one of the products as it forms. In this experiment, we will completely remove the water produced in the reaction by directly adding silica beads to the reaction vessel and using a drying tube with a drying agent (calcium chloride), which forbids the entrance of moisture into the reaction.

Learn to know more about Fischer esterification on

https://brainly.com/question/24262393

#SPJ9

After allowing time for photosynthesis the ¹⁸O-radiolabeled will be found in the plants in the form of C₆H₁₂O₆.

A researcher grew a plant in an illuminated chamber with ¹⁸O-radiolabeled CO₂. After allowing the time for photosynthesis, the ¹⁸O-radiolabeled will be found in C₆H₁₂O₆ in the plant.

Photosynthesis is a process in which plants produces their food by using sunlight, carbon dioxide and water to produce their food with the help of the a green colored pigment called chlorophyll.

It does not matter which isotope of oxygen we are using for photosynthesis, the amount of the food produced will be more or less same in case of every isotope.

The oxygen isotope will get mixed in the soil of the plants and after the whole photosynthesis process is done. the oxygen is constituted in the plant as C₆H₁₂O₆ will would be further broken down into the form of o₂ and H₂O. These H₂O and O₂ will be released in the atmosphere as a final product of the complete photosynthesis.

To know more about Photosynthesis, visit,

https://brainly.com/question/26568636

#SPJ9

An ionic equation is a chemical equation in which the electrolytes in aqueous solution are described as dissociated ions.

3FeSO4(aq) + 2K3PO4(aq) = Fe3(PO4)2(s) + 3K2SO4(aq)

ionic equation : 3Fe(2+)(aq) + 3SO4(2-)(aq)+ 6Na(+)(aq) + 2PO4 (3-) (aq) → Fe3(PO4)2(s)+ 6Na(+) + 3SO4(2-)(aq)

net ionic equation: 3Fe(2+)(aq)  + 2PO4 (3-)(aq) → Fe3(PO4)2(s)  

K2CO3(aq) + CdI2(aq) = 2KI(aq) + CdCO3(s)

net ionic equation for K2CO3(aq) + CdI2(aq) = 2KI(aq) + CdCO3(s).

2HNO3 + CaCO3 = Ca(NO3)2 + H2O + CO2

ionic equation :  CaCO3(s) + 2H+(aq) → Ca2+(aq) + CO2(g) + H2O()

To learn more about :   Ionic equation

Ref :  https://brainly.com/question/19705645

#SPJ13

Answer

b. 4.2 x 10²⁴

Explanation

Given:

Moles of H2O = 7 moles

Avogadro's Number is 6 x 10²³

What to find:

The number of articeles of H2O present in 7 moles of H2O.

Solution:

1 mole f any substanc contains 6 x 10²³ partcicles

Therefore 7 moles of H2O will contain

The correct answer is option:

b. 4.2 x 10²⁴

Answer:

Explanation:

The grass hopper feeds on the plants so the secondary consumer lacking its food source would decrease as the producer increases with not predator.

The density of a block of steel is:

8.05g/mL.

The mass of a substance per unit of volume is that the definition of density. though the sign may represent the Latin letter D, it's most often accustomed represent density. Mass divided by volume is however density is mathematically outlined.

The units of mass divided by volume accustomed live density embody grammes per cm cube (g/cm3) and kilogrammes per liter .

The equation for density is d = M/V, wherever d represents density, M is mass, and V is volume.

As a result, so as to calculate density, we tend to should divide mass by volume.

The mass is one hundred 20.75 and therefore the volume is 15.0 ml.

Divided by 120.75/15.0

8.05g/mL is the density.

To know more about density click at

https://brainly.com/question/7244058

Answer: The density of a substances is generally known as mass per unit volume. And The SI unit is Kg/m3. Mass Versus Weight: Always there is confusion in people between mass and weight. Actually, the mass of an object is referred to its weight. In the scientific concepts mass refers loosely to the amount of matter in an object.

Explanation:

Answer:

The five main postulates of the KMT are as follows: (1) the particles in a gas are in constant, random motion, (2) the combined volume of the particles is negligible, (3) the particles exert no forces on one another, (4) any collisions between the particles are completely elastic, and (5) the average kinetic energy of ...

Explanation:

The pressure of the CO₂ collected in atm is 0.965 atm.

We need to know about pressure to solve this problem. Pressure is unit that describe how much force applied on a surface area. It can be determined as

P = F / A

where P is pressure, F is force and A is area.

From the question above, we know that

Pvapor = 18.65 torr

P = 752 torr

From partial pressure, we can conclude that

P = Pco₂ + P vapor

752 = Pco₂ + 18.65

Pco₂ = 752 - 18.65

Pco₂ = 733.35 torr

Convert to atm

Pco₂ = 733.35 torr

Pco₂ = 733.35/760 atm

Pco₂ = 0.965 atm

Find more on pressure at: https://brainly.com/question/25965960

#SPJ4

Based on the freezing point depression value of HCl in benzene, HCl does not act as an electrolyte in benzene.

The freezing point of a solvent such as water is lowered by the solute which ionizes in it.

The freezing point of a solution depends on the number of particles in the solution.

The formula for freezing point depression is given below:

ΔTf = i * Kf * m

HCl remains as molecules and does not ionize in a solution of Benzene. This is because benzene is a nonpolar solvent.

Therefore, the equation for the dissolution of HCl in benzene is given below:

HCl (g) → HCl (in benzene solution)

1 mol of HCl gas gives 1 mol of HCl molecules in solution.

Therefore, HCl remains a molecule and does not act as an electrolyte in benzene.

Learn more about freezing point depression at: https://brainly.com/question/24314907

#SPJ1

The terms change of phase and change of state are synonymous. A change in phase is always accompanied by a change in heat. However, the temperature remains constant. When we heat a solid, the energy supplied is used to increase the kinetic energy of its molecules, resulting in an increase in temperature.

To learn more about phase changes, refer to:

https://brainly.com/question/25664350

#SPJ4

The approximate percent increase in carbon dioxide concentration        =38%

For this reason, researchers regularly take air samples at several distant locations across the globe, including one atop the Hawaiian volcano Mauna Loa, to gauge the average concentration of CO2 in the atmosphere. Since the 1950s, this website has monitored the atmospheric concentration of carbon dioxide.

Percentage increase = (Increase/original  value)×100

P.I.C= (ΔC/C₁)×100 ⇒ Equation 1

Where P.I.C = Percentage increase in the concentration of carbon dioxide from 1790 to 2007,

ΔC = increase in the concentration of carbon dioxide from 1790 to 2007,

C₁ = concentration of carbon dioxide in 1790.

But,

ΔC = C₂ - C₁ ⇒Equation 2

Substituting equation 2 into equation 1.

P.I.C = [(C₂ - C₁)/C₁]×100⇒Equation 2

Given: C₁ = 278 ppm, C₂ = 383 ppm

Substituting into equation 2

P.I.C = [(383-278)/278]×100

P.I.C = (105/278)×100

P.I.C = 37.77%

P.I.C ≈ 38%

The approximate percent increase in carbon dioxide concentration =38%

To know more about atmospheric concentration visit:

https://brainly.com/question/3469446

#SPJ9

The average atomic mass of your cadmium element is the mass and random errors in the measurement of mass and differences that arise from the nature of samples used for the experiment

The average atomic mass is the mass of the element that is obtained when you  consider the masses of all the isotopes that are found in the element as well as the percentage abundance of each of the isotopes and the isotope percentages in each of the samples would not be the same and this means that the results that each group would obtain would slightly differ from each other

Know more about average atomic mass

https://brainly.com/question/28831519

#SPJ1

Answer:

28 g

Explanation:

d = m/V

m = dV = 10.5 x 56.0 = 28 g

The ratio varies in different ionic compounds because different ionic compounds have different ratios of positive ions to negative ions.

An ordered grid of points known as a lattice is used to visualize how crystallizing particles are structured. The unit cell of the crystal is defined by the lattice points. The smallest part of a crystal, known as a unit cell, is repeatedly translated in three dimensions to create the whole crystal.

The crystal structure (or crystal lattice) of an ionic compound is determined by the size of the ions and the stoichiometry (ratio of cations to anions) of the ions. Many ionic compounds have variations in this ratio.

A recurring three-dimensional pattern of atoms or groups of atoms in a crystal is known as a crystal lattice structure.

To learn more about lattice  click on the link below:

https://brainly.com/question/4792664

#SPJ9

Whenever ionic chemicals are melted or dissolved in water, an electric current is produced. The B ions migrate toward the positive electrode in an ionic solution, while the A+ ions migrate toward the negative electrode.

Always dissociated, which means they are made up of independent cations (+) and anions, which are ionic compounds or salts (-). For instance, even in the solid state, there are just Na+ and Cl- ions in common salt, NaCl, and nothing that is "NaCl."

But the ions need to travel in order to conduct electricity. In the solid state, it is impossible to do this. Therefore, dry solid salts with no moisture at all are poor electrical conductors. The ions may travel, thus when they are in liquid form (melted) or solution (dissolved in water), they conduct electricity.

In other words, they conduct electricity because they are dissociated, not because electrical current is flowing through them.

Learn more about electric current at:

https://brainly.com/question/27003377

The chemical formula for an ionic compound represents the ratio of the combined ions present in a sample.

A sample of an ionic compound doesn't represent a multiple of distinct molecules, like a sample of a covalent compound, where the chemical formula does represent the number of atoms in a single, differentiated molecule. Ionic compounds form crystal lattices where each positively charged cation is surrounded by negatively charged anions and vice versa. Thus, the chemical formula of an ionic compound merely describes the ratio of cations and anions present in the crystal lattice.
The total number of ions in the lattice can, on the other hand, be calculated using the mass of the sample and Avogadro's number.

You can learn more about ionic compounds here:

brainly.com/question/9167977

#SPJ4

The following organic molecules are isomers CH3CH₂CH₂CH3. Option A.

All organic compounds have isomers. Isomers mean that they have the same molecular formula but different configurations. The connectivity of a connection ultimately determines its functionality. For example, the same molecular formula can be used to identify alcohols or ethers.

Isomers are molecules that have the same molecular formula but differ in the arrangement of their atoms in space. This excludes all other configurations by rotating the molecule as a whole or around specific bonds. In organic chemistry, isomers are molecules that have the same molecular formula but differ in the structural or spatial arrangement of the atoms within the molecule.

Learn more about Organic molecules here:-https://brainly.com/question/26556885

#SPJ1

Answer:

C

Explanation:

ostriches are classified as diurnal

Answer: The answer is diurnal!

Explanation: Nocturnal animals, such as the owl or bat, stay awake during the night and sleep during the day! Which for diurnal animals, they sleep during the night, and roam around during the day! Such as us humans are both because some people may work during the night and sleep during the day! The most common for humans is us sleeping at night though and awake during the day!