Balance these equations
____ C5H12 + ____ O2 ____ CO2 + ____ H2O

____ NH4NO2 ____ N2 + ____ H2O

____ N2 + ____ O2 ____ N4O10

____ MgCO3 + ____NaBr ____ MgBr2 + ____ Na2CO3

____ K + ____ LiCl ____ KCl + ____ Li

The isotope symbol that fits each description is as follows: 68 neutrons, 47 electrons is Ag b. mass number = 197, 79 electrons is Au c. atomic number = 86, 136 neutrons is Rn d. atomic number = 76, mass number = 192 is Os.

Isotopes are two or more atom types that share the same atomic number (number of protons in their nuclei), location in the periodic table, and chemical element but have distinct nucleon numbers (mass numbers) as a result of having a different number of neutrons in their nuclei. Although the chemical properties of each isotope of a given element are nearly identical, they differ in their atomic weights and physical characteristics.

The name "isotope" refers to the fact that different isotopes of the same element occupy the same location on the periodic table. The word "isotope" is derived from Greek origins that mean "the same place".

to know more about isotope visit

https://brainly.com/question/11680817

#SPJ4

The number of valence electrons of ammonia in a lewis structure is 8.

A lewis structure can be described as the simplified representation of the outer shell electrons in a molecule.

A valence electron refers to an electron that is in the outer shell associated with an atom.

Ammonia has a total of 1 nitrogen and 3 hydrogen atoms. Nitrogen has 5 valence electrons while Hydrogen has a valence of 1. In an ammonia molecule, nitrogen completes its octet shell by sharing three electrons with the three hydrogen atoms. Therefore the number of valence electrons in ammonia will be;

ammonia = 5 + 1 + 1 + 1 = 8

Therefore, the number of valence electrons of ammonia is calculated to be 8.

To learn more about valence electrons; click here:

https://brainly.com/question/371590

#SPJ4

Answer:

8

Explanation:

Answer: No, it is a rule. The aufbau principle, from the German Aufbauprinzip, also called the aufbau rule, states that in the ground state of an atom or ion, electrons fill atomic orbitals of the lowest available energy levels before occupying higher levels. For example, the 1s subshell is filled before the 2s subshell is occupied.

The name given to an ion that has lost electrons is cation. Details about cations can be found below.

A cation is a positively charged ion i.e. the one that would be attracted to the cathode in an electrolytic procedure.

Generally, an ion is an electrically charged atom. An ion can either be positively charged or negatively charged. The latter is called an anion while the former is called a cation.

A cation is formed when an atom loses electrons to become positively charged while an anion is formed when an atom accepts electrons to become negatively charged.

Therefore, it can be said that the name given to an ion that has lost electrons is cation.

Learn more about cation at: https://brainly.com/question/1488567

#SPJ1

Answer: Click the puzzle pdf I did some of the words but if you need more let me know because I will go back in and do more!

Explanation:

The molarity of the K2CrO4 solution would be 0.001254 M.

The molarity of a solution is defined as the number of moles of solute per liter of solution. To calculate the molarity of the K2CrO4 solution, we need to first determine the number of moles of K2CrO4 present in the 184.6 mg sample.

Calculate the number of moles of K2CrO4:

The molar mass of K2CrO4 is 294.19 g/mol.

mass of K2CrO4 = 184.6 mg = 0.1846 g

number of moles = mass/molar mass

number of moles = 0.1846 g / 294.19 g/mol = 0.000627 mol

Calculate the volume of the solution in liters:

We are given that the solution is made up to a final volume of 500.0 mL. To convert milliliters to liters, we divide by 1000.

volume = 500.0 mL ÷ 1000 mL/L = 0.500 L

Calculate the molarity:

Molarity = number of moles / volume of solution

Molarity = 0.000627 mol / 0.500 L = 0.001254 M

Therefore, the molarity of the K2CrO4 solution is 0.001254 M.

More on molarity can be found here: https://brainly.com/question/8732513

#SPJ1

Calculate the molarity. A 184.6-mg sample of K2CrO4, is dissolved in enough water to make 500.0 mL of solution.

Hydrazine \((N_2H_4)\) and its derivatives play a crucial role as rocket fuels. By utilizing the molar bond enthalpies provided on the previous page, it is possible to determine the molar enthalpy of formation for gaseous \((N_2H_4)\).

To calculate the molar enthalpy of formation of \((N_2H_4)\) (g), we employ the concept of bond enthalpy. The enthalpy change (ΔH) is given by the difference between the total energy required to break the bonds in the reactants and the total energy released when the bonds are formed in the products.

By examining the molecular structure of \((N_2H_4)\), we can identify the bonds present. There are four N-H bonds, each with a corresponding bond enthalpy. To calculate the enthalpy change, we sum up the bond enthalpies of the reactants (bonds broken) and subtract the sum of the bond enthalpies of the products (bonds formed). This calculation provides the molar enthalpy of formation for gaseous \((N_2H_4)\).

Learn more about Hydrazine here

brainly.com/question/31035102

#SPJ11

The process of converting ammonia into nitrates is called option B. nitrification and involves two steps: ammonia oxidation to nitrite and nitrite oxidation to nitrate, facilitated by specific bacteria.

Ammonia oxidation

Ammonia is first oxidized by specific bacteria called ammonia-oxidizing bacteria (AOB) into nitrite. This process occurs in two stages. In the first stage, AOB convert ammonia into nitrite using the enzyme ammonia monooxygenase (AMO). This reaction releases energy and produces hydroxylamine (NH2OH) as an intermediate. In the second stage, hydroxylamine is further oxidized to nitrite.

Nitrite oxidation

Nitrite, produced from the previous step, is then further oxidized by nitrite-oxidizing bacteria (NOB) into nitrate. NOB use the enzyme nitrite oxidoreductase (NXR) to carry out this conversion. Nitrate is the final product of nitrification and can be taken up by plants as a source of nitrogen for growth.

In summary, option B. is the correct answer. Nitrification is the process by which ammonia is first converted into nitrite and then further oxidized into nitrate by specific groups of bacteria.

Learn more About nitrification from the given link

https://brainly.com/question/17425312

#SPJ11

Answer:

IUPAC name for Titin

Explanation:

The IUPAC name for Titin. This is the largest known protein and so has the longest chemical name. Written in full, it contains 189,819 letters.

Answer:

A Combustibility

If heat energy is transferred from direct contact between a warm object and a cold object, it has been transferred by Convection.

Heat is transferred through convection, which is the large-scale movement of molecules inside gases and liquids. Conduction is used to move heat from the object to the fluid initially, but fluid motion is responsible for the bulk of the heat transfer.

The transfer of heat between two bodies by currents of moving gas or fluid is known as convection on heat transfer. In free convection, air or water rises and is replaced by a cooler parcel of air or water as it moves away from the hot body.

To learn more about convection please visit -
https://brainly.com/question/16635311
#SPJ4

Answer:750 mL

Explanation:

volume=3x250 cm^3 = 750 cm^3

750 cm^3 x 1mL/1cm^3 =750 mL

If the volume of a beaker is 250 cm. The amount of water that three beakers can hold is equal to 750 mL.

Volume may be defined as the amount of space that is significantly occupied by a three-dimensional figure or object. It is measured in cubic units.

According to the question,

The volume of a beaker is = 250 cm.

It is known that 1 milliliter is exactly the same as 1 cm.

∴ The amount of water three beakers can hold = 250 × 3 = 750 mL.

Therefore, if the volume of a beaker is 250 cm. The amount of water that three beakers can hold is equal to 750 mL.

To learn more about Volume, refer to the link:

https://brainly.com/question/1972490

#SPJ2

The energy movement from solid liquid to gas is always going up and moving faster. A solid is a tight definite shape where the molecules are all stuck in one place and there’s barely energy and movement. The liquid has a more free space since it does not have a definite volume energy moves around quicker. The gas phase would have energy going everywhere Becuase it doesn’t have a definite shape and volume. As temperature goes up the kinetic energy also goes up

Mitosis produces two genetically identical diploid cells, on the other hand, Meiosis produces four genetically identical haploid cells.

To know more about Meiosis & Mitosis, Click here :

https://brainly.com/question/20726356?referrer=searchResults

#SPJ4

when (r)-butan-2-ol is treated with tscl in pyridine, the product formed is the single enantiomer.

When the (r)-butan-2-ol is treated with tscl in pyridine, the product formed is the single enantiomer. the single enantiomer are also called as the single isomers or the stereoisomers.  the enantiomers are the pair of the molecules or compound that will exist in the two forms that are the mirror image of the each other but they are not superimposable mirror to each other. the images which are the superimposable mirror image to each other is called as achiral compound.

Thus, a single enantiomer is formed as the product when the  (r)-butan-2-ol is treated with tscl in pyridine.

To learn more about single enantiomer here

https://brainly.com/question/29853533

#SPJ4

Answer:

There are 2.7× 1023atoms in 0.45 mol of Al.

Explanation:

Answer:

do not care

Explanation:

Answer:

I think Ne electron configuration

Answer:

D 2-7-2

Explanation:

I got it wrong and then they showed me the right answer

Gas pressure can be described as the force exerted per unit area by gas molecules as they collide with the surface of a container. It is a measure of the average kinetic energy of the gas molecules.

For such more questions on Gas pressure

https://brainly.com/question/30235826

#SPJ8

Answer:

seven on the ph scale is the neutral point

Explanation:

The range goes from 0 - 14, with 7 being neutral. pHs of less than 7 indicate acidity, whereas a pH of greater than 7 indicates a base. pH is really a measure of the relative amount of free hydrogen and hydroxyl ions in the water.

The pressure of the 3rd container will be 7 atm by combining the 2 containers of gas into a 3rd.

Pressure is the name given to the force acting on such a unit area of such a surface. It operates perpendicular to the surface being applied pressure on. Pressure is a force and the space that it acts in.

The standard unit measuring pressure would be a pascal (Pa). Given that a pascal was an extremely small measure of pressure, the kilopascal represents the most appropriate measurement for commonplace gas pressures (kPa). 1000 pascals make up one kilopascal. The atmosphere can be another frequently used measurement of pressure (atm)

The given data is:

P1 =  2atm

P2 = 5 atm

P3 = ?

The precure of 3rd container will be P3 = p1 +p2 = 3 atm +2 atm = 5atm

Thus, pressure, will be 7 atm.

To know more about pressure

https://brainly.com/question/15509886

#SPJ4

Answer:

D. > 7

Explanation:

Benzoic acid, HX, is a weak acid that reacts with OH- as follows:

HX + OH- → X- + H2O

Where X- is produced, the conjugate base of benzoic acid.

As benzoic acid is a weak acid, benzoate ion is a strong base. A strong base has pH > 7. Right option is:

D. > 7

When magnesium loses electrons to become an ion, it forms a cation. Option B is correct.

Magnesium is a chemical element having symbol Mg and its atomic number will be 12. It is a shiny gray metal having a low density, low melting point as well as high chemical reactivity

Magnesium loses electrons to become an ion, it forms a cation which is a positively charged ion. The formation of a cation occurs when an atom loses one or more electrons, resulting in an overall positive charge.

In the case of magnesium, it would lose two electrons to become a positively charged magnesium ion, written as Mg²⁺. This process occurs because the electron configuration of the magnesium atom becomes unstable when it loses electrons, resulting in an ion with a positive charge.

To know more about cation here

https://brainly.com/question/28710898

#SPJ4

Learn more about pH here:

https://brainly.com/question/17325580

#SPJ4

Answer:

Explanation:

isotopes are members of a family of an element that all have the same number of protons but different numbers of neutrons.

Protons are subatomic particles found within the nucleus of an atom and carry a positive charge. They are fundamental to determining the identity of an element as number of protons uniquely defines an element's atomic number. Different isot element contain the same number of protons.

Isotopes of an element have the same atomic number, which means they possess the same number of protons. This is a fundamental characteristic of all isotopes of a given element. For example, carbon-12, carbon-13, and carbon-14 are isotopes of carbon. They all have 6 protons because carbon's atomic number is 6.

However, isotopes differ in their number of neutrons. Neutrons are electrically neutral subatomic particles also found in the nucleus of an atom. The varying number of neutrons in isotopes results in differences in atomic mass. For example, carbon-12 has 6 neutrons, carbon-13 has 7 neutrons, and carbon-14 has 8 neutrons.

To know more about atomic number refer:

https://brainly.com/question/8834373

#SPJ11

Answer:the second largest one

Explanation:

both weels are pushing at it

Yes, nitrogen in the air does impact the combustion process. Nitrogen is an inert gas, which means it does not readily participate in chemical reactions. These nitrogen oxides contribute to air pollution and can have harmful effects on human health and the environment.

Water vapor in the air can affect the combustion process in a couple of ways This can decrease combustion efficiency and result in incomplete combustion. This can lower the temperature of the flame and reduce the overall energy output.

The dew point temperature is the temperature at which the air becomes saturated with water vapor and condensation occurs. It is determined by the amount of moisture in the air and the air temperature. The dew point temperature can be measured using a dew point meter or calculated using temperature and relative humidity data.

To know more about the inert gas visit :

https://brainly.com/question/32219509

#SPJ11

Answer:

This question lacks options. The options are:

A. The two substances underwent a physical change

B. The two substances were melting

C. A new substance was forming

D. A change in the mass of the two substances

The answer is C

Explanation:

Changes in chemistry can either be physical or chemical. A physical change as the name implies does not alter the chemical content of the susbtances involved. However, chemical changes affect the chemical composition of the substances, hence, new substances are produced.

A chemical change is also characterized with a color change, temperature change, gas evolution etc. In this question, Mia mixed two substances in a test tube and noticed that the test tube became warm, gas came out from the test tube. This implies a CHEMICAL CHANGE, LEADING TO THE FORMATION OF NEW SUBSTANCES.

Answer:Carbon containg molecules

Explanation:

Protoplasm is made up of necleus and carbon containing molecules

Answer:

Protoplasm is composed of a mixture of small molecules such as ions, amino acids, monosaccharides and water, and macromolecules such as nucleic acids, proteins, lipids and polysaccharides. In eukaryotes the protoplasm surrounding the cell nucleus is known as the cytoplasm and that inside the nucleus as the neoplasm.

Explanation: