What does it mean for matter to change physically?

If a mixture of quartz and bauxite contains 78% of quartz this means

There are 78gm of quartz in 100 gm of mixture/

There are 78gm of quartz for every 22 gm of bauxite.

There are 117gm of quartz for every 150gm of mixture.

If there is 78% of quartz in mixture of quartz and bauxite then

78% of quartz in 100% of mixture

If we suppose we have 100gm of mixture

Then ,

78% of 100 gm = 78gm

i.e. we have 78gm of quartz in mixture

100gm = quartz+ bauxite

100gm +78gm + bauxite

100- 78 = bauxite

Therefore bauxite = 22gm

Thus in 100 gm of mixture there is 78 gm of quartz and 22gm of bauxite.

If we suppose we have 150gm of mixture

Then ,

78% of 150 gm = 117gm

i.e. we have 117gm of quartz in mixture

150gm = quartz+ bauxite

150gm = 117gm + bauxite

150- 117 = bauxite

Therefore bauxite = 33gm

Thus in 150 gm of mixture there is 117gm of quartz and 33gm of bauxite.

To know more about mixture

https://brainly.com/question/24360390

#SPJ4

Mass of water =  15.287 grams.

The equation here will look like this:

CxHy + O2 ------->CO2 + H2O

Hydrocarbon (contains c' and 'H' alone) and O2 are the reactants in this reaction.

Water and carbon dioxide are products.

Since mass cannot be created or destroyed in an isolated system, we now know this to be true. Although it is conserved, it can change forms.

Therefore, for chemical reaction

The mass of the reactants and the mass of the products must match. Here, just forms are altered to create the product.

Consequently, according to the Mass Law of Conversion:

Mass of Reactants = Mass of Products, we might say.

[(Mass of CO2) + (Mass H2O ] = [(Mass of Hydrocarbon) + (Mass of 02)]

[10.286  + 38.265] = [33.264 g + Mass of H20]

48.551  = 33.264 + Mass of H2O.

Mass of water equals 48.5519-33.261

The Mass of water will therefore be 15.287 grams.

Learn more about Law of Conversion here:

https://brainly.com/question/16756626

#SPJ4

The gas mileage is 39.986 miles/gallon.

A gallon is a unit of volume in both the US customary and imperial systems of measurement. The US gallon is defined as 231 cubic inches (3.785 liters).

1 km = 0.621371 mi;

1 L = 0.264172 gal

a gas mileage = 17 km/L

d(automobile) =  17 km x 0.621371 km/mi

d(automobile) = 10.563 mi; the distance

V(automobile) = 1 L x 0.264172 L/gal

V(automobile) = 0.264172 gal; the volume of an automobile

a gas mileage = d(automobile) ÷ V(automobile)

a gas mileage = 10.563 mi ÷ 0.264172 gal

a gas mileage = 39.986 mi/gal

More about units change: brainly.com/question/26715286

#SPJ4

Polypeptides : Peptides are tiny chains of amino acids connected by the peptide bonds.

Function of polypeptides : Polypeptides aid make up proteins by bonding many amino acids conjointly.

Amino acids are organic components that comprises both amino and carboxylic acid functional groups.

Sequence of amino acids are known as polypeptides. The covalent bonds that hold on to amino acids conjointly are known as peptide bonds.

Types of amino acids : nonpolar, polar, negatively charged, and positively charged.

According to question

Linking amino acid monomers together to form a polymer requires the formation of peptide bonds.

To know more about Polypeptides here :

https://brainly.com/question/28270191?referrer=searchResults

#SPJ4

True, the specific heat capacity of an object depends only on the substance from which the object is made.

Specific heat capacity is defined as the amount of heat required to raise the temperature of one gram of a substance by one degree Celsius.

The SI unit of specific heat capacity is joule per kelvin per kilogram.

The specific heat capacity at constant volume is written as,

[tex]C_{V} = (du/dt)_{V}[/tex]

The specific heat capacity at constant pressure is written as,

[tex]C_{P} = (dh/dT)_{P}[/tex]

here, u is the internal energy of system in kJ/kmol and h is the enthalpy of system in kJ/kmol.

For an Ideal gas the relation between heat capacity at constant volume and at constant pressure can be written as ,

[tex]C_{P} - C_{V} = R[/tex]

Specific heat capacity is an intensive property i.e., independent of quantity. No matter how much substance we have, its ability to absorb heat energy at a particular temperature is the same.

So, we can say that the specific heat capacity of an object depends only on the substance from which the object is made and not on its quantity.

To know more about Heat Capacity refer to the link:

https://brainly.com/question/27991746

#SPJ4

In atom has 11 protons, 12 neutrons, and 10 electrons. this atom has an atomic number of 11 , an atomic mass of 23 , and an overall charge of +1 .

What is electron?

Unattached or attached to an atom, an electron is a negatively charged subatomic particle (not bound). One of the three main types of particles inside an atom, along with protons and neutrons, is an electron that is linked to the atom.

An atom's nucleus is made up of electrons, protons, and neutrons. The positive charge of a proton balances out the negative charge of an electron. An atom is in a neutral state if its protons and electrons are equal in number.

They have a mass that is considerably lower, exist outside of the nucleus, and display both wave- and particle-like properties. Since an electron is also a fundamental particle, it is unreinforced and unbroken.

Learn more about electron

https://brainly.com/question/13998346

#SPJ4

Answer:

Sun

Explanation:

he sun is a big ball of burning plasma it cuases light the sun is the seco d hottest object in the universe the sun another fact is we learned the sun isn't even a solid it's bassiclly a ball of energy or a constant flaming ball of plasma hydrogen and heluim if the sun went out we would live in darkness forever not to mention we would frezze to death

Calcium nitrate [tex]Ca(NO_{3})_{2}[/tex] )is the limiting reactant for the reaction.

This is fewer than the 2.4 moles of lithium phosphate [tex]Li_{3} PO_{4}[/tex] that are readily available. This indicates a deficiency in calcium nitrate[tex]Ca(NO_{3})_{2}[/tex]. 2.4 moles of lithium phosphate must be added in order to complete the reaction.

As a result, calcium nitrate [tex]Ca(NO_{3})_{2}[/tex] is the limiting reagent and lithium phosphate[tex]Li_{3} PO_{4}[/tex] is in excess. The availability of Calcium Nitrate [tex]Ca(NO_{3})_{2}[/tex] is lesser than the 2.4 moles of lithium phosphate [tex]Li_{3} PO_{4}[/tex] that are accessible. This indicates that present amount of calcium nitrate [tex]Ca(NO_{3})_{2}[/tex] is inadequate to completely react with 2.4 moles of lithium phosphate[tex]Li_{3} PO_{4}[/tex]. Thus, calcium nitrate [tex]Ca(NO_{3})_{2}[/tex] is the limiting reagent and lithium phosphate [tex]Li_{3} PO_{4}[/tex] is in excess.

To know more about chemical reactions refer to the link: brainly.com/question/14448493

#SPJ4

Answer:

0.130058

Explanation:

divide the mass / volume by 27.68

Answer:

Mass.

Si Unit Measurement.

volume.

milliliters.

Eight atoms of carbon react with 18 atoms of hydrogen , forming only one molecule of [tex]C_{8} H_{18[/tex] is considered as violation of the law of conservation of mass .

According to the law of mass conservation , neither chemical processes nor physical changes can create or destroy mass in an isolated system . The mass of the products and reactants of a chemical reaction must be equal, in accordance with the law of conservation of mass .

The reaction occur when eight atoms of carbon react with 18 atoms of hydrogen , forming only one molecule of [tex]C_{8} H_{18[/tex] is given as .

8C +18[tex]H_{2}[/tex] → [tex]C_{8} H_{18[/tex]

Mass of reactants = 8 × 12 + 18 × 2 = 132 g

Mass of reactants = 8 × 12 + 18  = 114 g

So , mass of reactant is not equal to the mass of product .

learn about law of mass conservation

https://brainly.com/question/13383562

#SPJ1

The mass of copper(II) sulfide formed when copper and sulfur are heated together is 167g.

The law of conservation of mass states that the mass of a substance can neither be created nor destroyed.

This law further explains that in a chemical reaction, the mass of the reactants must equal the mass of the products.

According to this question, sulfide is formed when copper and sulfur are heated together. In a reaction, 130 g of copper reacts with 45 g of sulfur.

However, after the reaction is complete, 8.0 g of unreacted sulfur remain. This suggests that the mass of sulfide produced is as follows:

(130g + 45g) - 8g = 167g

Therefore, the mass of copper(II) sulfide formed when copper and sulfur are heated together is 167g.

Learn more about law of conservation of mass at: https://brainly.com/question/13383562

#SPJ1

In chemical communication between cells, a secretory cell secretes a chemical messenger that binds to receptors on the target cell.

Cells are the basic building blocks of all living things. The human body is made up of trillions of cells. They give structure to the body, absorb nutrients from food, convert those nutrients into energy, and perform specific functions. In multicellular organisms, such as higher plants and animals, specialized cell groups are organized into tissues and organs.

Cells can be used as the basis for describing organisms as unicellular or multicellular. Unicellular organisms are organisms that have only one cell, i.e. single-celled organisms. Prokaryotes and protists are examples. Multicellular organisms are organisms with more than one cell. Examples are plants and animals.

Learn more about cell here

https://brainly.com/question/13920046

#SPJ4

Answer:

Ionic bonds are stronger than covalent bonds

Answer:

conductor

Explanation:

The distance between the two hydrogen atoms in a molecule of water is 0.000000000172 m,1.72x10 ^-10m is the distance in scientific notation.

Distance is the overall movement of an object, regardless of direction. The distance can be defined as the amount of ground an object has moved, regardless of its start or end point. An object's distance can be defined as the complete distance an object travels. for example. If the car drives 5 km east and then turns 8 km north, the total distance traveled by car is 13 km.

Distance is defined as the distance, or separation, between two objects. An example distance is 5 feet between two tables. An example of distance is the difference between both sides of the problem. noun.

Learn more about distance here

https://brainly.com/question/24775607

#SPJ4

Sodium benzoate is a widely used food preservative. The type of cell that can utilize sodium benzoate as a carbon and energy source is pseudomonas cell.

Psuedomonas cells are simple cell. They are gram-negative or gram-positive bacteria. These cells infect humans, animals, and plants.

They grew on fruits and vegetables. They also infect or contaminate food. So they are very harmful to all living organisms.

Thus, a common food preservative is sodium benzoate. Pseudomonas cells are the only kind of cell that can use sodium benzoate as both a carbon and an energy source.

To learn more about pseudomonas cells, refer to the link:

https://brainly.com/question/15014933

#SPJ4

Hydrogen bonding is a unique type of dipole-dipole enchantment among molecules, now not a covalent bond to a hydrogen atom. It results from the attractive pressure between a hydrogen atom covalently bonded to a very electronegative atom consisting of a N, O, or F atom and some other very electronegative atom.

A single water molecule can form 4 Hydrogen Bonds.

A hydrogen atom this is linked to a exceptionally electronegative atom and some other relatively electronegative atom that is nearby engage with each other to form hydrogen bonds, which are an unique kind of attractive intermolecular interactions. This system is known as hydrogen bonding. Hydrogen, as an example, is covalently related to the more electronegative oxygen atom in water molecules (H2O).

To learn more about Hydrogen Bonding visit: https://brainly.com/question/10904296

#SPJ4

Total calories (kcal), calories from fat, saturated fat, trans fat, cholesterol, sodium, total carbs, fiber, sugars, protein, vitamin A, vitamin C, calcium & iron are nutrition components that must appear on the nutrition facts food label.

Nutrition is an important factor in health and development. Better nutrition is associated with improved infant, child, and maternal health, stronger immune systems, safer pregnancies and births, reduced risk of non-communicable diseases (such as diabetes and cardiovascular disease), and longer lifespans. doing. Healthy children learn better. Well-nourished people are more productive and can create opportunities to gradually break the cycle of poverty and hunger.

Malnutrition in all its forms poses a significant threat to human health. I'm facing Malnutrition has several forms and including undernutrition (wasting or underdevelopment), inadequate vitamins or minerals, overweight, obesity, and consequent diet-related noncommunicable diseases.

Learn more about nutrition  here

https://brainly.in/question/16577844

#SPJ4

Nitrogen gas is the major component of air. a sample of nitrogen gas in a glass bulb weighs 243 mg. 2.43 × 10-4 kg is this mass in si base units of mass (kilograms).

Nitrogen, or N, using its scientific abbreviation, is a colorless, odorless element. Nitrogen is in the ground under our feet, in the water we drink, and in the air, we breathe. In fact, nitrogen is the most abundant element in the Earth's atmosphere, with approximately 78% of the atmosphere being composed of nitrogen.

Nitrogen is commonly used during sample preparation for chemical analysis. Used to concentrate and reduce the volume of liquid samples. Nitrogen is also important for the chemical industry. It is used in the production of fertilizers, nitric acid, nylon, dyes, and explosives*. Exposure to very high concentrations of pure nitrogen can cause dizziness, drowsiness, displacing oxygen from the air, unconsciousness, and death.

Learn more about  nitrogen here

https://brainly.com/question/1380063

#SPJ4

Answer:

Explanation:

To determine the mass of each compound, we need to convert them into units of moles first. We use avogadros number to do this and use the molar mass of the compounds to convert to mass.

3.01 × 1023 molecules H2O ( 1 mole / 6.022x10^23 kg) (18.02 g / 1 mole) = 9.01 g

8.32 × 1020 formula units CaBr2 ( 1 mole / 6.022x10^23 kg) (199.89 g / 1 mole) = 0.28 g

1.93 × 1026 molecules XeF6 ( 1 mole / 6.022x10^23 kg) (245.28 g / 1 mole) = 78610.16 g

The correct answer for electron configuration of a Ca2+ ion is e. 1s22s22p63s23p6 which is isoelectronic with the noble gas argon.

Isoelectronicity is a phenomenon determined whilst or greater molecules have equal structure (positions and connectivities amongst atoms) and equal digital configurations, however, range through what particular factors are at positive places withinside the structure.

This definition is on occasion termed valence isoelectronic. Definitions can on occasion be now no longer as strict, on occasion requiring identification of the full electron matter and with it the whole digital configuration.[2] More usually, definitions are broader and can enlarge to permit one-of-a-kind numbers of atoms withinside the species being compared.[3]

The significance of the idea lies in figuring out considerably associated species, as pairs or series. Isoelectronic species may be anticipated to reveal beneficial consistency and predictability of their houses, so figuring out a compound as isoelectronic with one already characterized gives clues to feasible houses and reactions (Differences in houses which includes electronegativity of the atoms in isoelectronic species can have an effect on reactivity.)

Learn more about isoelectronic  here;

https://brainly.com/question/14511468

#SPJ4

The density of a 167.4 g sample of magnesium having a volume of 96.32 ml is 1.737 g/cm3.

The mass per unit volume is known as density. A scalar quantity, density. It is represented by the letter D, and the Greek letter rho is used as the sign for density. Mass divided by volume is how density is computed.

Mass is a physical body's total amount of matter. Mass is defined as the sum of the moles of the material and the compound's molar mass.

Given the mass is 167.4 g

The volume is 96.32 ml

mass / volume

167.4  / 96.32 = 1.737

Thus, the density of a 167.4 g sample of magnesium is 1.737  g/cm3.

To learn more about density, refer to the link:

https://brainly.com/question/11105469

#SPJ4

Ionic compounds are formed from ionic bonds which occur when there is electron transfer, while covalent compounds share electrons. Hence, the answer is true.

Covalent compounds are compounds formed by covalent bonds. Atoms form compounds to achieve a stable electronic configuration. Covalent compounds do this by sharing their electrons. Covalent bonds are weaker than ionic compounds and mostly form gases.

Ionic compounds achieve the stable electronic configuration of noble gases by gaining or giving away their electrons. When this happens, the atoms get attracted to each other by electrostatic forces. Atoms that give away their electrons become positively charged cations and atoms that receive electrons become negatively charged anions.

Therefore, the major difference between ionic compounds and covalent compounds is that covalent compounds share electrons and ionic compounds transfer electrons.

Learn more about ionic compounds here:

https://brainly.com/question/7655594

#SPJ4

Acetic acid are in 1.52 ml if the concentration of the solution is 1.23 m 0.031  mole are present.

Here mass of acetic acid is 60g/mol and here given mole is 1.52 ml then

1.52/60= 0.025 and also here  concentration are given then concentration=n/V so, n=C×V= 1.23 × 0.025=0.03mole

So in 1.52 ml 0.03mole are seen

Know more about mole

https://brainly.com/question/28496646

#SPJ4

The first deaf Africans American alumnus of Gallaudet to earn a doctorate was Dr. Glenn B. Anderson in 1982.

As the first Deaf African-American doctor in the United States, Dr. Glenn B. Anderson is well-known in his field.

He was born and reared on Chicago's South Side, and at the age of seven, he lost his hearing. His parents advised him "you have to be twice as excellent as everyone else to succeed" when they encountered difficulties and challenges in his early life.

Dr. Anderson graduated with a bachelor's degree in psychology from what was then the Gallaudet College in 1968, and he then went on to the University of Arizona to get a master's degree in rehabilitation counseling.

To learn more about deaf people from given link

https://brainly.com/question/26483787

#SPJ4