g Determine the empirical formula for a compound that contains C, H and O. It contains 40.92% C, 4.58% H, and 54.50% O by mass. Must show your work on scratch paper to receive credit.

answer:when an herbivore eats meat and a carnivore eats the herbivore energy from the eatin meat is passed indirectly to the carnivore.

Answer:

A the heat started a chemical reactions

The heat started a chemical reaction between the iron and sulfur, making the compound iron sulfide. So, the correct option is (A).

A chemical reaction is defined as the process that leads to a chemical change from one set of chemical substances to another.

In this process, a substance or substance undergoes a chemical change to produce a new substance or substances, with whole new properties, in a process known as chemical reactions. The nature and identity of the products is completely different from that of the reactants.

For the information above, the chemical reaction caused by the heat, the iron and the suphur mixed with each other are heated on a burner forming a yellow color, which turns into iron sulphide, a black colored compound having totally different properties.

Thus, the heat started a chemical reaction between the iron and sulfur, making the compound iron sulfide. So, the correct option is (A).

Learn more about Chemical Reactions, here:

https://brainly.com/question/29039149

#SPJ2

A hypothesis is a proposed explanation or prediction based on limited evidence or observations, which can be tested through further investigation or experimentation. It should be specific, testable, and based on existing knowledge.

For such more question on hypothesis

https://brainly.com/question/606806

#SPJ8

Answer:

Explanation:

Discussion

When Pressure increases  equilibrium shifts to the side with the smallest number of moles. But which side is that?

N2(g) + 3H2(g) ⇌ 2NH3(g)

The left side has 1 mol of nitrogen (N2) and 3 moles of Hydrogen = 4 mols

on the left side.

The right side has 2 mols of NH3 = 2 mols on the right.

Conclusion: You tell the number of mols by the Balance numbers to the left of each chemical in an equation.

Since the left side N2 + 3H2 = 4 mols, the equilibrium does NOT shift left.

2NH3 is only two mols.

The equilibrium shifts Right

Answer

D

Answer

b) energy is required to break bonds because bond breaking is an endothermic process.

Explanation

In endothermic reactions, more energy is absorbed when the bonds in the reactants are broken than is released when new bonds are formed in the products.

Hence, energy is required to break bonds. Energy is released when chemical bonds are formed because atoms become more stable. However, bond-forming is an exothermic process, because it releases energy.

Answer:

where is the question

Explanation:

There is a nine-fold rise in the pace of the reaction when the concentration of F is tripled but the concentration of G stays the same. The response is in the second order relative to F.

If you increase one reactant's concentration in a third order reaction involving two reactants by three times, the rate rises by a factor of three. If a reactant is first order, its concentration will cause a doubling in the reaction's rate; a tripling in the reaction's rate, etc. If a reactant is third order, its rate of reaction will increase by a factor of 8 when its concentration is doubled (23 = 8), etc.

The concentration of a reactant does not impact the rate. The rate remains unchanged even if the concentration is doubled. The given rate law needs to be written first. The concentrations of A and B will be increased by three times each after that.

To learn more about order refer to :

https://brainly.com/question/28179168

#SPJ4

Answer:

Explanation:

The pH of 0.02 M hydrochloric acid is approximately 1.7.

THANKS

IF THE ANSWER IS CORRECT , THEN MARK ME AS BRAINLIST

a. The rate law for this reaction is: Rate = k[Cl] [H₂]. This means that the rate of the reaction is directly proportional to the concentrations of both Cl and H₂ molecules.

Rate law is an equation that describes the rate of a chemical reaction as a function of the concentrations of reactants. The rate law allows us to describe how the rate of a reaction changes when the concentrations of reactants are changed. It is derived from the rate equation, which is a mathematical expression that can be used to calculate the rate of a reaction from the concentrations of the reactants and the rate constant.

b. The rate law for this reaction is: Rate = k[O] [Os]. This means that the rate of the reaction is directly proportional to the concentrations of both O and Os molecules.
c. The rate law for this reaction is: Rate = k[NO₂]₂. This means that the rate of the reaction is directly proportional to the square of the concentration of NO₂ molecules.

To learn more about rate law
https://brainly.com/question/16981791
#SPJ1

Complete Question:

Mass of the pure silver deposited on a metal object made into the cathode of the cell is calculated to be 0.0217 gm.

The process of using electrodeposition to coat an object in a layer of metal is called electroplating .

As we know that, Q = I * t

=0.270 * 72

= 19.44 C

Here Q is quantity of electricity , I is current in amperes = 0.270 A (given)

t is time in seconds (72.0 sec)

As 96500 Coulomb of electricity electrolyzes 1 mole of Ag

then,19.44 C of electricity deposits,

=1/96500 * 19.44

= 0.000201 moles of Ag

Mass of Ag is = number of moles * molar mass

= 0.000201 * 108

= 0.0217 gm

Thus, mass of pure silver deposited on a metal object made into the cathode of the cell is  0.0217 gm.

To know more about electroplating, refer

https://brainly.com/question/16266707

#SPJ4

An ion is an atom or a group of atoms that carries an electric charge.

An atom becomes an ion when it gains or loses one or more electrons, resulting in an unequal number of protons and electrons. This imbalance of positive and negative charges gives the ion a net charge, either positive or negative.

When an atom loses one or more electrons, it becomes a positively charged ion, called a cation. Cations have fewer electrons than protons, resulting in a net positive charge.

When an atom gains one or more electrons, it becomes a negatively charged ion, called an anion. Anions have more electrons than protons, resulting in a net negative charge.

Learn more about ions at.

https://brainly.com/question/22277121

#SPJ1

Answer:

Differences in water density affect vertical ocean currents. Denser water tends to sink, while less dense water tends to rise. Other causes of currents include tides, rain, runoff, and ocean bottom topography. Topography is the surface features of a place. Ocean topography includes slopes, ridges, valleys, and mountains! All these things are found at the bottom of the ocean, and can influence currents.

The cause-and-effect relationship between density and ocean currents is the mixing and circulation are influenced by the density differences between the various layers of the water column.

The continuous, predictable, and directional movement of seawater known as ocean currents is caused by gravity and wind.

Ocean vertical currents are influenced by variations in water density. Less dense water tends to rise, while denser water sinks. Tides, rainfall, runoff, and the topography of the ocean bottom are additional causes of currents.

Thus, the mixing and circulation are influenced by the differences in densities between the various layers of the water column, which is the cause-and-effect relationship between density and ocean currents.

To learn more about ocean currents, refer to the below link:

https://brainly.com/question/1543125

#SPJ2

Answer:

c. KBr .

Explanation:

Hello!

In this case, since electrolytes are substances that are able to carry electric current in the form of electrons via ions, those that are ionic are said to have the greatest capacity to conduct the electricity; in such a way, since SO2, C6H12O6 and CO are non-ionic molecules but covalent, they are not good conductor, therefore the best conductor would be c. KBr as it is an ionic compound due to the electronegativity of the K-Br bond.

Best regards!

Answer:

SO₄²⁻ (aq) + Pb²⁺ (aq) → PbSO₄ (s)

General Formulas and Concepts:

Explanation:

Step 1: RxN

Na₂SO₄ (aq) + Pb(NO₃)₂ (aq) → PbSO₄ (s) + NaNO₃ (aq)

Step 2: Balance RxN

Na₂SO₄ (aq) + Pb(NO₃)₂ (aq) → PbSO₄ (s) + 2NaNO₃ (aq)

Step 3: Ionic Equations

Total Ionic Equation:

2Na⁺ (aq) + SO₄²⁻ (aq) + Pb²⁺ (aq) + 2NO₃⁻ → PbSO₄ (s) + 2Na⁺ (aq) + 2NO₃⁻ (aq)

Cancel out spectator ions.

Net Ionic Equation:

SO₄²⁻ (aq) + Pb²⁺ (aq) → PbSO₄ (s)

Answer:

Option D

Explanation:

Because we know the relationship between no of moles and volume

Option D

Answer:

the moon gets infront of the sun

Answer:

A solar eclipse happens when the moon moves in front of the Sun as seen from a location on Earth. During a solar eclipse, it gets dimer and dimmer outside as more and more of the Sun is covered by the Moon. During a total eclipse, the entire Sun is covered for a few minutes and it becomes very dark outside. The temperature outside also drops.

Following is the classification of given substances:

Atomic element: Ag

Molecular element: F₂

Molecular compound: CO

Ionic compound: PbI₄

Molecules, groups of two or more atoms that form the smallest identifiable unit that can divide a pure substance and that retain the composition and chemical properties of that substance.

An atom consists of a single positively charged nucleus surrounded by a cloud of negatively charged electrons. As the atoms approach, the electron clouds interact with each other and with the nucleus. This interaction causes atoms to combine to form molecules when the energy of the entire system is reduced. From a structural point of view, a molecule consists of a collection of atoms joined by valences. A diatomic molecule contains two atoms chemically bonded together. When two atoms are identical, like oxygen (O2) molecules, they form a homonuclear diatomic molecule, but when the atoms are different, like carbon monoxide (CO) molecules, they are heteronuclear. Forms a diatomic molecule. Molecules containing two or more atoms are called polyatomic molecules. B. Carbon dioxide (CO2) and water (H2O). A polymer molecule can contain thousands of constituent atoms.

To know more about molecules, visit:

https://brainly.com/question/28069497

#SPJ1

Answer: The mass of water produced is 507.6 g

Explanation:

The number of moles is defined as the ratio of the mass of a substance to its molar mass. The equation used is:

\(\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}\) ......(1)

Given mass of glucose = 846 g

Molar mass of glucose = 180 g/mol

Plugging values in equation 1:

\(\text{Moles of glucose}=\frac{846g}{180g/mol}=4.7 mol\)

The given chemical equation follows:

\(C_6H_{12}O_6+6O_2\rightarrow 6CO_2+6H_2O+energy\)

By the stoichiometry of the reaction:

If 1 mole of glucose produces 6 moles of water

So, 4.7 moles of glucose will produce = \(\frac{6}{1}\times 4.7=28.2mol\) of water

Molar mass of water = 18 g/mol

Plugging values in equation 1:

\(\text{Mass of water}=(28.2mol\times 18g/mol)=507.6g\)

Hence, the mass of water produced is 507.6 g

By using the ideal gas law and Avogadro's number, we find that there are approximately 6.72 × 10^22 molecules of CO2 in 2.5 L at STP.

To determine the number of molecules of CO2 in 2.5 L at STP (Standard Temperature and Pressure), we can use the ideal gas law and Avogadro's number.

Avogadro's number (N_A) is a fundamental constant representing the number of particles (atoms, molecules, ions) in one mole of substance. Its value is approximately 6.022 × 10^23 particles/mol.

STP conditions are defined as a temperature of 273.15 K (0 °C) and a pressure of 1 atmosphere (1 atm).

First, we need to convert the volume from liters to moles of CO2. To do this, we use the ideal gas law equation:

PV = nRT,

where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature in Kelvin.

Since we have STP conditions, we can substitute the values:

(1 atm) × (2.5 L) = n × (0.0821 L·atm/(mol·K)) × (273.15 K).

Simplifying the equation:

2.5 = n × 22.4149.

Solving for n (the number of moles):

n = 2.5 / 22.4149 ≈ 0.1116 moles.

Next, we can calculate the number of molecules using Avogadro's number:

Number of molecules = n × N_A.

Number of molecules = 0.1116 moles × (6.022 × 10^23 particles/mol).

Number of molecules ≈ 6.72 × 10^22 molecules.

Therefore, there are approximately 6.72 × 10^22 molecules of CO2 in 2.5 L at STP.

For more such questions on ideal gas law visit:

https://brainly.com/question/27870704

#SPJ8

Yes, the synthesis strategy can give a substitution reaction with the expected regiochemistry and stereochemistry.

The expected product of the forward reaction would be a single enantiomer of the substituted product, depending upon the starting materials used. For example, if the starting material is an unsubstituted chiral compound, then the product would be a single enantiomer of the desired product. If the starting material is a racemic mixture, then the product would be a racemic mixture of the desired product. In detail, a substitution reaction involves the replacement of a functional group in a molecule with a different functional group. This process can be catalyzed by a transition metal catalyst, such as a palladium or nickel complex. The reaction is usually carried out in the presence of a base, such as sodium hydroxide or potassium hydroxide, and a nucleophile, such as an alcohol or an amine.

To learn more about regiochemistry click here  https://brainly.com/question/14957697

#SPJ4

Answer:

Both come from vegetable sources; pectin is a soluble fiber found in plants, while agar comes from various species of algae. Chemically, they're closely related, and both consist of long strands of sugar molecules.

Explanation:

Answer:

I will find the answer for you

Explanation:

Just a minute

The molar mass is 3230.8 g/mol

First, we need to know that the formula for the general gas law  is represented as;

PV = nRT

such that the parameters are;

Substitute the values

1 × 2.33 = n × 8.314 × 433.15

Multiply the values, we get;

n = 2.33/ 8.314 × 433.15

Divide the values

n = 6.5 × 10⁻⁴ moles

But, number of moles = mass/molar mass

Molar mass = 2.10/ 6.5 × 10⁻⁴

Molar mass = 3230.8 g/mol

Learn about ideal gas law at: https://brainly.com/question/25290815

#SPJ1

Answer: the answer is 0.074Hz

Explanation:

Given, (In air)

Velocity V=340m/s

Frequency f=20,000Hz

Wavelegth λ=?

V=f.λ

λ=

F

V

​

=

20,000

340

​

=0.017Hz

Also, Given (in Water)

Velocity, V=1480m/s

Frequencyf=20,000Hz

wavelength, λ=?

V=F.λ

λ=

F

V

​

=

20,000

1480

=​0.074Hz

Answer:

frequency

Explanation:

frequency is velocity/ wavelength

340/1.36

250

To solve such this we must know the concept of Neutralization reaction. Therefore, neutralization is the type of chemical reaction that occurs when calcium hydroxide (Ca(OH)\(_2\)) reacts with nitric acid (HNO\(_3\)).

Chemical reaction is a process in which two or more than two molecules collide in right orientation and energy to form a new chemical compound. The mass of the overall reaction should be conserved. There are so many types of chemical reaction reaction like combination reaction, double displacement reaction.

Neutralization is a reaction that occur between acid and base. The products of neutralization reaction is salt and water. Neutralization is the type of chemical reaction that occurs when calcium hydroxide (Ca(OH)\(_2\)) reacts with nitric acid (HNO\(_3\)).

Therefore, neutralization is the type of chemical reaction that occurs when calcium hydroxide (Ca(OH)\(_2\)) reacts with nitric acid (HNO\(_3\)).

Learn more about the chemical reactions, here:

brainly.com/question/3461108

#SPJ1

Answer:

1 × 10⁻⁵ M

Explanation:

Step 1: Given data

Step 2: Convert the concentration of chlorine from mg/L to g/L

We will use the conversion factor 1 g = 10³ mg.

1 mg/L × 1 g/10³ mg = 1 × 10⁻³ g/L

Step 3: Convert the concentration of chlorine from g/L to mol/L (molar)

We will use the molar mass of chlorine: 70.91 g/mol.

1 × 10⁻³ g/L × 1 mol/70.91 g = 1 × 10⁻⁵ mol/L = 1 × 10⁻⁵ M

Answer:

it is 90 km in one hour it is 90km/h

90/60=1,5