Stoichiometry is best defined as the quantitative relationship between reactants and products in a chemical reaction. qualitative relationship between reactants and products in a chemical reaction.
study of chemical reactions.

Answer:

You would inform your teacher but don't  take any safety equipment off

Explanation:

don't try to clean it yourself, tell a teacher immediately

(i put it in the wrong section)

A radio frequency pulse will flip them all and the amount of rf radiant they absorb will depending on the amount of magnetic field they experience.

A radio frequency pulse will flip the nuclear spins, and the amount of radiofrequency radiation they absorb will depend on the strength of the magnetic field they experience. In nuclear magnetic resonance (NMR), a radiofrequency pulse is used to excite the nuclear spins of atoms in a sample.

The amount of radiation absorbed by the sample depends on the strength of the magnetic field that the sample is exposed to. By analyzing the radiation absorbed by the sample, it is possible to determine information about the chemical and physical properties of the sample.

To know more about radio frequency, here

brainly.com/question/27960001

#SPJ4

Answer:

here you go

Explanation:

someone help me on this but i still got a hundred

Answer:

The number of atoms in 11.5 g of sodium is 0.501 x 6.022 x 10^23 atoms/mol = 3.015 x 10^23 atoms.

Explanation:

To calculate the number of atoms in a given mass of a substance, you first need to know the atomic mass of the element in question. The atomic mass of sodium is 22.99 g/mol. This means that 11.5 g of sodium contains 11.5 / 22.99 = 0.501 mol of sodium atoms.

Since the atomic mass of sodium is known, we can now use the formula for the number of atoms, which is given by Avogadro's number. Avogadro's number is a constant that represents the number of atoms in one mole of a substance, and it has a value of 6.022 x 10^23 atoms/mol.

Therefore, the number of atoms in 11.5 g of sodium is 0.501 x 6.022 x 10^23 atoms/mol = 3.015 x 10^23 atoms.

Answer: 3.011 * 10^23 atoms

Explanation:

Molar mass of Na=23g/mol

no. of moles = weight/molar mass

n = 11.5/23

no. of moles = 0.5

no. of moles = no. of atoms/avogadro’s number

0.5 = no. of atoms/6.022*10^23

0.5*6.022*10^23 atoms = no. of atoms

3.011*10^23 atoms.

So there are 3.011*10^23 atoms present in 11.5g of sodium sample.

Hope this helps!!! :)

1) Gas P is hydrogen as hydrogen burns with a pop sound

2) OH -ve is the ion responsible for making Q alkaline

3)Since OH (-ve ) ion is responsible so it must be basic means Ph is more than 7 or can say between 7 and 14

4)Reaction of calcium with cold water:

Ca (s) + 2H2O (l) --> Ca(OH)2(aq.) + H2 (g)

So basically it is an experiment you also can perform when you hold a lighter near the bubble that formed during the reaction it will burn out with a pop sound.

To know more about calcium carbonate visit below

https://brainly.com/question/28206480

Answer:0

Explanation: zero because it is the most stable form of oxygen in its standard state

Answer:

1120 mm Hg

plus give brainliest

1. The ionic bond and covalent bond are distinguished from each other based on the way the atoms are attached to each other. Ionic bonds are formed when one or more electrons are transferred from one atom to another, resulting in a cation and an anion attracting each other to form an ionic bond. Ionic bonds are a result of electrostatic attraction between ions with opposite charges. Covalent bonds are formed when atoms share one or more pairs of electrons to achieve stable electronic configurations. Covalent bonds form when two or more atoms share electrons in order to achieve the stable electron configuration of noble gases. In covalent bonding, the electrons are shared between atoms, not transferred.

2. Density is defined as mass per unit volume. The density of sugar in g/cm³ is obtained by dividing its mass by its volume.

Mass of sugar = 500gVolume of sugar = 0.315L

Using the formula for density, we have

Density = Mass/Volume= 500g/0.315

L= 1587.30 g/L1

L = 1000 mL1 mL = 1 cm³

Density = 1587.30 g/L × (1 mL/1 cm³)

Density = 1.5873 g/cm³, to 4 significant figures

3. We can use the formula; Density = Mass/Volume, to calculate the mass of the block of silicon. Volume of block of silicon = 450 m³ Density of silicon = 2.336 g/cm³ Volume of block of silicon = 450 m³ = 4.5 × 10^8 cm³

We can substitute the values into the formula

Density = Mass/Volume

2.336 g/cm³ = Mass/4.5 × 10^8 cm³

Mass = 2.336 g/cm³ × 4.5 × 10^8 cm³

Mass = 1051200000 g or 1.05 × 10^9 g, to 2 significant figures.

Therefore, the mass of the block of silicon is 1.05 × 10^9 g.

To know more about density visit:

https://brainly.com/question/29775886

#SPJ11

The mass of glucose required here is  4068 grams, we get this freezing point depression.

Freezing point depression generally refers to the lowering of the freezing point of solvent upon the addition of solutes.

It is a colligative property of the solutions that is generally proportional to the molality of solute that is added. The depression in the freezing point of a solution can be described by the following formula;

Δ\(T_{f}\) = \(K_{f}\) × molality × i

4.2\(^{o}C\) = 1.86 × m × 1

m = 2.26

molality = moles of solute

                mass of solvent

2.26m = mole of solute

                10.0Kg

mole of solute = 22.6mol

mole of glucose = mass of glucose

                              molar mass

22.6 = mass of glucose  

                180

Mass of glucose = 22.6 × 180

Mass of glucose = 4068 grams

To know more about  freezing point depression.

https://brainly.com/question/12844810

#SPJ4

Answer: the oxidation of the copper (it turning green)

Explanation:

Answer:

The ratio of the particles that make it up is fixed

Explanation:

The temperature of the sample is 3527.8 K, or approximately 3254.6°C.

Ideal gas law is the equation of state of hypothetical ideal gas.

As, PV = n RT, where P is pressure, V is volume, n is number of moles, R is the ideal gas constant (8.31 J/mol*K), and T is temperature in Kelvin.

2 atm * 11.2 L = 0.50 mol * 8.31 J/mol*K * T

Converting atm to pascals:

2 atm * 101325 Pa/atm = 202650 Pa

202650 Pa * 11.2 L = 0.50 mol * 8.31 J/mol*K * T

T = (202650 * 11.2) / (0.50 * 8.31)

T = 3527.8 K or 3254.6°C.

Therefore, the temperature of the sample is 3527.8 K, or approximately 3254.6°C.

To know more about ideal gas law, refer

https://brainly.com/question/27870704

#SPJ1

Note: The question given on the portal is incomplete. Here is the complete question.

Question:  A 0.50 mole sample of CO2(g) at 2 atm occupies 11.2 liters. What is the temperature of the sample?

1. Fluid compressibility (C): Fluid compressibility refers to the measure of how much a fluid's volume changes in response to a change in pressure.

2. Solution-gas/liquid ratio (SGLR): The solution-gas/liquid ratio represents the volume of gas dissolved in a given volume of liquid at a specific pressure and temperature.

3. Fluid formation volume factor (FVF): The fluid formation volume factor represents the ratio of the volume of a fluid at reservoir conditions (pressure and temperature) to its volume at surface conditions.

4. Fluid densities (ρ): Fluid densities refer to the mass per unit volume of a fluid.

5. Fluid viscosities (μ): Fluid viscosities represent the measure of a fluid's resistance to flow.

1.  Equation: C = -1/V * dV/dP

  Symbol: C

  Unit: 1/Pascal (Pa^-1)

  Correlation: The compressibility of fluids can vary depending on the fluid type. For ideal gases, the compressibility is inversely proportional to pressure.

2.Equation: SGLR = V_gas / V_liquid

  Symbol: SGLR

  Unit: Volumetric ratio (e.g., scf/bbl)

  Correlation: The solution-gas/liquid ratio is influenced by the pressure and temperature conditions, as well as the composition of the fluid.

3. Equation: FVF = V_reservoir / V_surface

  Symbol: FVF

  Unit: Volumetric ratio (e.g., bbl/STB)

  Correlation: The fluid formation volume factor depends on the composition and properties of the fluid, as well as the reservoir conditions.

4. Equation: ρ = m / V

  Symbol: ρ

  Unit: Mass per unit volume (e.g., kg/m^3)

  Correlation: Fluid densities can vary depending on the type and composition of the fluid. For example, water has a density of approximately 1000 kg/m^3.

5. Equation: No single equation; viscosity is measured experimentally using viscometers.

  Symbol: μ

  Unit: Pascal-second (Pa·s) or centipoise (cP)

  Correlation: The viscosity of a fluid is influenced by temperature and pressure. Different fluids exhibit different viscosities, ranging from low-viscosity fluids like water to high-viscosity fluids like heavy oil.

To know more about Fluid formation volume factor (FVF)

https://brainly.com/question/31458735

#SPJ11

Answer:

There are 5.84*10²³ magnesium atoms in the beaker.

Explanation:

Avogadro's Number or Avogadro's Constant is called the number of particles that make up a substance (usually atoms or molecules) and that can be found in the amount of one mole of said substance. Its value is 6.023*10²³ particles per mole. Avogadro's number applies to any substance.

So, to calculate the amount of magnesium atoms present in the beaker, the following rule of three is applied: if by definition of Avogadro's Number in 1 mole there are 6.023*10²³ atoms, in 0.97 moles how many atoms are there?

\(atoms=\frac{0.97 moles*6.023*10^{23}atoms }{1mole}\)

atoms=5.84*10²³

There are 5.84*10²³ magnesium atoms in the beaker.

The hominid fossil is 200 years old.

We'll begin by calculating the number of half-lives that has elapsed.

2ⁿ = N₀ / N

2ⁿ = 15424 / 14942

2ⁿ = 1.03

Take the log of both side

Log 2ⁿ = Log 1.03

nLog 2 = Log 1.03

Divide both side by Log 2

n = Log 1.03 / Log 2

n = 0.04

Finally, we shall determine the age of the hominid fossil.

t = n × t½

t = 0.04 × 5000

t = 200 years

Therefore, the hominid fossil is 200 years old.

Learn more about half life:

https://brainly.com/question/10406952

Answer:

C

Explanation:

As the size of a star increases, luminosity increases. If you think about it, a larger star has more surface area. That increased surface area allows more light and energy to be given off.

Correct option is c. 0

Let's discuss it further below.

In the Lewis structure for formaldehyde (H2CO), where C is the central atom, the formal charge on C is:

Step 1: Determine the number of valence electrons for C. Carbon has 4 valence electrons.
Step 2: Calculate the number of electrons assigned to C in the Lewis structure. In formaldehyde, C is bonded to 2 H atoms (each with 1 bond) and 1 O atom (with a double bond). This gives C a total of 4 bonds, so it has 4 assigned electrons.
Step 3: Calculate the formal charge on C using the formula: Formal Charge = (Valence Electrons) - (Assigned Electrons). Thus, Formal Charge on C = (4) - (4) = 0.

So, the formal charge on C in the Lewis structure for formaldehyde is 0 (option c).

Learn more about Lewis structure.

brainly.com/question/4144781

#SPJ11

There are enzymes that interact with one enantiomer but not the other is incorrect. The interaction of some enzymes with one enantiomer but not the other.

Enzymes are proteins that are capable of lowering the activation energy and speeding up or slowing down a chemical reaction. It means that enzymes do not alter the energy of the reactants and products of the reaction; they only affect the activation energy. The enzymes are not consumed during the reaction in which they are involved, and they remain the same after the reaction.

Therefore, they can be used over and over again to catalyze the same reaction. Enzymes are stereospecific, meaning they can interact with specific stereoisomers of a compound. There are enzymes that interact with one enantiomer but not the other, which is incorrect because enzymes interact with specific enantiomers of a compound. Enzymes are stereospecific, meaning they can interact with specific stereoisomers of a compound.

The incorrect statement about enzymes is option D. There are enzymes that interact with one enantiomer but not the other. Enzymes are not consumed during a reaction, and they are proteins that can speed up or slow down chemical reactions by lowering the activation energy.

To know more about enantiomer, visit:

https://brainly.com/question/13265194

#SPJ11

The molarity of the given throat spray is 0.042 M.

Explanation :

What is Molarity?

Molarity is a measure of the concentration of a solute in a solution in terms of moles of solute per liter of solution. It is denoted by M or mol/L. It is calculated using the following formula:Molarity = Number of moles of solute / Volume of solution (in liters)

Calculating the Molarity

The throat spray has a density of 0.9956 g/mL. This means that 1 mL of the throat spray has a mass of 0.9956 g. Let the volume of the throat spray be V mL.

Therefore, the mass of the throat spray can be expressed as:

m = 0.0140 × V (since 1.40% mass phenol means 1.40 g of phenol in 100 g of solution)

Now, let's substitute the given values in the formula for molarity and simplify it:

Molarity (M) = Number of moles of solute / Volume of solution (in liters)

Number of moles of solute = Mass of solute / Molar mass

Molar mass of phenol (C6H5OH) = 6 × 12.01 g/mol (for C) + 5 × 1.01 g/mol (for H) + 16.00 g/mol (for O)= 94.11 g/mol (approx)

Molarity = Number of moles of solute / Volume of solution (in liters)= (0.000148 V) / (V / 1000)= 0.148 M/L= 0.042 M (approx.)

Therefore, the molarity of the given throat spray is 0.042 M.

To know more about the molarity https://brainly.com/question/8732513

#SPJ11

To solve this problem, we can use the gas law equation, which states that PV = nRT, where P is pressure, V is volume, n is the number of moles of gas, R is the universal gas constant, and T is temperature.

Since we are told that the temperature remains constant, we can simplify the equation to P1V1 = P2V2, where P1 is the initial pressure, V1 is the initial volume, P2 is the new pressure, and V2 is the new volume.
Plugging in the given values, we get:
P1 = 862 kPa
V1 = 752 c * m^3
V2 = 624 c * m^3
Solving for P2, we get:
P2 = (P1 * V1) / V2
P2 = (862 kPa * 752 c * m^3) / 624 c * m^3
P2 = 1040 kPa
Therefore, the new pressure under a volume of 624c * m^3 is 1040 kPa.

For more such question on gas law

https://brainly.com/question/28206895

#SPJ11

The total mass of sodium chloride is 58.44 g/mol.

The mass of sodium is 22.99 g/mol.

To find the percent sodium in sodium chloride can be found by dividing the amounts.

Therefore, the percent sodium is 39%.

The chemical species that is missing from the net ionic equation is the number of electrons.

We know that what we have in this case is a redox reaction. When we talk about a redox reaction we are talking about the kind of reaction where reduction and oxidation are both taking place at the same time. This implies that one of the species would accept the electrons and one of the species would donate the electrons.

Having said this, if we look at the reaction equation as it has been written, we can see that the specie that is missing here is the number of electrons that have been lost or gained in the course of the reaction as it has been written here.

We can only be able to infer this from the charges that the species that we can see in the reaction equation are carrying.

Learn more about net ionic equation:https://brainly.com/question/22885959

#SPJ1

Answer:

35 °C is the final temperature.

Comment if you need step to step explanation.

A 100.0 gram sample of water at 50.0°C is mixed with a 50.00 gram sample of water at 20.0°C. 35 °C is the final temperature of the 150.0 grams of water.

The physical concept of temperature indicates in numerical form how hot or cold something is. A thermometer is used to determine temperature. Thermometers are calibrated using a variety of temperature scales, which historically defined distinct reference points or thermometric substances.

The most popular scales are indeed the Celsius scale, sometimes known as centigrade, with the unit symbol °C, the Fahrenheit level (°F), as well as the Kelvin scale (K), with the latter being mostly used for scientific purposes. Among the seven units inside the International Units of Measure is the kelvin (SI).

Final temperature = (m₁×T₁×c₁  +  m₂×T₂×c₂)/( T₁+ T₂)

                            =  (100.0×50.0×4.18  +   50.00×20.0×4.18 )/( 50.0+ 20.0)

                           = 35 °C

Therefore,  35 °C is the final temperature of the 150.0 grams of water.

To know more about temperature, here:

https://brainly.com/question/23411503

#SPJ3

To determine the theoretical yield of Al2O3, we need to calculate the amount of Al2O3 that would be produced based on the balanced chemical equation.

The molar mass of Al is 26.98 g/mol, and the molar mass of Al2O3 is 101.96 g/mol.

First, we need to convert the mass of Al to moles:

Moles of Al = Mass of Al / Molar mass of Al

= 160.0 g / 26.98 g/mol

= 5.929 mol

According to the balanced chemical equation, the stoichiometric ratio between Al and Al2O3 is 4:2. Therefore, for every 4 moles of Al, we expect to produce 2 moles of Al2O3.

Moles of Al2O3 = (Moles of Al / 4) * 2

= (5.929 mol / 4) * 2

= 2.9645 mol

Next, we can calculate the theoretical mass of Al2O3:

Mass of Al2O3 = Moles of Al2O3 * Molar mass of Al2O3

= 2.9645 mol * 101.96 g/mol

= 302.9 g

Therefore, the theoretical yield of Al2O3 is 302.9 g.

To calculate the percent yield, we need to compare the actual yield (260.0 g) to the theoretical yield (302.9 g) and express it as a percentage:

Percent Yield = (Actual Yield / Theoretical Yield) * 100

= (260.0 g / 302.9 g) * 100

= 85.79%

The percent yield is approximately 85.79%.

To know more about mole concept, click here:-

https://brainly.com/question/22540912

#SPJ11

Answer:

✔ octane

CH3CH2CH2CH2CH2CH2CH2CH3

✔ butane

CH3CH2CH2CH3

✔ methane

CH4

✔ decane

CH3CH2CH2CH2CH2CH2CH2CH2CH2CH3

✔ ethane

CH3CH3

Explanation:

An alkane contains only carbon and hydrogen. The following are the accurate names of the compounds;

An alkane is a compound whose only functional group is the carbon - carbon single bond. This compounds contain only carbon and hydrogen.

The correct names of the compounds are;

CH3CH2CH2CH2CH2CH2CH2CH3 - octane

CH3CH2CH2CH3 - butane

CH4 - methane

CH3CH2CH2CH2CH2CH2CH2CH2CH2CH3 - decane

CH3CH3 - ethane

Learn more about alkane: https://brainly.com/question/11256472

When the temperature conversion function =CONVERT(-22, "C", "F") is applied, a reading of -22 °C in Fahrenheit is displayed. On a variety of scales, including the Fahrenheit and Celsius systems, temperature is a unit that is used to denote hotness or coolness.

Heat energy will logically go from a hotter (body with a higher temperature) to a colder (body with a lower temperature) according to temperature (one at a lower temperature).

A temperature is a measurement used to express how hot or cold something is. It demonstrates how heat energy naturally flows from a hotter body to a cooler body and can be expressed in terms of any number of arbitrary scales (one at a lower temperature).

A match is burning at a far greater temperature than an iceberg, yet an iceberg has a significantly higher total heat energy than a match. Temperature is not the same as the energy of a thermodynamic system.

The temperature, along with pressure, density, and other similar properties, is referred to as an intense property as opposed to extensive characteristics like mass or volume—one that is independent of the quantity of stuff being addressed.

To know more about temperature:

brainly.com/question/23411503

#SPJ4

1.958 x 10²⁵ formula units of Cr₃ (PO₄) ² are present in 32.45 mol of Cr₃(PO₄) ².

A mole is a unit used to quantify a substance's quantity. One mole of a substance is the volume of that substance that contains exactly 12 grams of carbon-12's weight in atoms (or other elementary particles like ions, molecules, or atoms).

We need to use Avogadro's number, which is roughly 6.02 x 10²³ particles per mole, to convert from moles to formula units.

We must first figure out how many units of the formula there are in a mole of Cr₃ (PO₄) ². One Cr³⁺ ion and two PO₄³⁻ ions make up the formula unit for Cr₃ (PO₄) ². As a result, we can get the total number of ions in one unit of the formula as:

1 Cr³+ ion + 2 PO₄⁻³ ions = 3 ions.

Consequently, make up one mole of Cr₃ (PO₄) ²:  6.02 x 10²³ particles /mole = 3 ions / formula unit= 1.806 x 10²⁴ ions/mole.

Using the conversion factor below, we can determine how many formula units are contained in 32.45 moles of Cr₃ (PO₄) ²:

5.875 × 10²⁵ ions = 32.45 moles x 1.806 x 10²⁴ ions/mole.

Because Cr₃ (PO₄) ² has a formula unit of 3 ions, we can calculate the number of formula units by dividing the total number of ions by 3.

5.875 x 10²⁵ ions/3 ions/formula unit = 1.958 x 10²⁵ formula units.

Consequently, 1.958 x 10²⁵ formula units of Cr₃ (PO₄) ² are present in 32.45 mol of Cr₃(PO₄) ².

To know more about mole, visit:

brainly.com/question/29724957

#SPJ1

Answer:

1 mole of NaCl reacts with 1 mole of AgNO₃ to produce 1 mole of AgCl and 1 mole of NaNO₃

Explanation:

The given reaction is a double decomposition (metathesis) reaction. A reaction in which the products are formed by the exchange of the ions present in the two reactants. NaCL and AgNO₃ exchange ions to form AgCl, which precipitates and NaNO₃.

The balanced equation for reaction is given below;

NaCl(aq) + AgNO₃(aq) ----> AgCl(s) + NaNO₃(aq)

In the reaction above, the mole ratio of the reactants to products is 1 : 1 ---> 1 : 1

This means that 1 mole of NaCl reacts with 1 mole of AgNO₃ to produce 1 mole of AgCl and 1 mole of NaNO₃.

Given the molar mass of the compounds above;

NaCl = 58.5 g/mol; AgNO₃ = 170 g/mol; AgCl = 143.5 g/mol; NaNO₃ = 85 g/mol

Therefore, 58.5 g of NaCl reacts with 170 g of AgNO₃ to produce 143.5 g of AgCl and 85 g of NaNO₃

Answer:

Explanation: