Who has the more valued Exports?
South Africa or Egypt?
pls help ill mark brainliest! star and heart​ :)

Answer:

NH3

Explanation:

The "tri" attached to the trihydride means 3. So your hydrogen is going to have 3 atoms.

Answer:

All Answers only for the elite; Nomenclature of Covalent Compounds Quiz

You're Welcome :)

Explanation:

A-hydrochloric acid

B-sulfuric acid

C-dinitrogen pentoxide

C- IBr3

A- carbon dioxide

B- Start the name with hydro-.

B- H3BO3

C-sulfur trioxide

A- NH3

B- The chemical name ends with “hydroxide.”

Approximately 766.08 grams of oxygen are required to completely react with 240g of C₂H₆.

To determine the amount of oxygen required to completely react with 240g of C₂H₆ (ethane), we need to set up a balanced chemical equation for the combustion of ethane.

The balanced equation for the combustion of ethane is as follows:

C₂H₆ + O₂ → CO₂ + H₂O

From the balanced equation, we can see that the stoichiometric ratio between C₂H₆ and O₂ is 1:3. This means that for every one mole of C₂H₆, three moles of O₂ are required for complete combustion.

To calculate the amount of oxygen required, we need to convert the given mass of C₂H₆ to moles using its molar mass, and then use the stoichiometric ratio to determine the moles of O₂ required. Finally, we can convert the moles of O₂ back to grams using the molar mass of oxygen.

The molar mass of C₂H₆ is calculated as follows:

(2 x atomic mass of carbon) + (6 x atomic mass of hydrogen)

(2 x 12.01 g/mol) + (6 x 1.01 g/mol) = 30.07 g/mol

Now, we can proceed with the calculation:

Calculate the moles of C₂H₆:

moles of C₂H₆ = mass of C₂H₆ / molar mass of C₂H₆

moles of C₂H₆ = 240 g / 30.07 g/mol ≈ 7.98 mol

Determine the moles of O₂ using the stoichiometric ratio:

moles of O₂ = moles of C₂H₆ x (3 moles of O₂ / 1 mole of C₂H₆)

moles of O₂ = 7.98 mol x 3 ≈ 23.94 mol

Convert moles of O₂ to grams:

mass of O₂ = moles of O₂ x molar mass of O₂

mass of O₂ = 23.94 mol x 32.00 g/mol = 766.08 g

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Answer:Explanation:

The statement that best describes the people of the Mississippian Period is that they were farmers who used simple tools to grow their food in small gardens. They would also fish and gather food such as muscles, in order to create a large enough food supply in addition to produce from these gardens and farms.

Answer:

+5

Explanation:

Let's consider the following balanced equation.

Mn(NO₃)₂ + 2 HCl --> MnCl₂ + 2 HNO₃

We can determine the oxidation number of N in (NO₃)₂²⁻ taking into account that the sum of the oxidation numbers of the elements present in a chemical species is equal to this overall charge. For this compound we know:

2 N + 6 O = 2-

2 N + 6 (-2) = 2-

2 N = +10

N = +5

answer

liquid B

explanation

its inverse

higher normal boiling point means

one with the LOWER pressure

Raoult's law &

general principle of

thermodynamics & the gas laws

chatgpt

Answer:

Okyu

Explanation:

Mass of Zn = 65

(NO3)2 = 124

\(65 + (14 + 16 \times 2) \times 2 \\ 65 + 124 \\ = 184g mol\)

Explanation:

Mass of Zn = 65

(NO3)2 = 124

\begin{gathered}65 + (14 + 16 \times 2) \times 2 \\ 65 + 124 \\ = 184g mol\end{gathered}

65+(14+16×2)×2

65+124

=184gmol

Hello, this is Bing. I can help you with your question. Based on the information I found on the web, **H2** can be broken down into its two atoms of hydrogen (H) by supplying enough energy to overcome the bond that holds them together⁴. This process is called **dissociation** and requires an energy equal to or greater than the **dissociation energy** of H2, which is about 436 kJ/mol⁴.

One way to break down H2 is by using **electricity** to split water (H2O) into hydrogen (H2) and oxygen (O2) through a process called **electrolysis**¹. In this process, water is decomposed into its elements by passing an electric current through it. The electric current is provided by a battery or another source of electricity and the water needs to have an **electrolyte**, such as salt or acid, added to it to make it conductive¹. Two electrodes, usually made of metal or other conductive material, are inserted into the water and connected to the battery. The electrode connected to the positive terminal of the battery is called the **anode** and the one connected to the negative terminal is called the **cathode**¹. When the electric current flows through the water, hydrogen gas bubbles form at the cathode and oxygen gas bubbles form at the anode¹. The overall chemical reaction for electrolysis of water is:

2 H2O → 2 H2 + O2

Another way to break down H2 is by using **heat** to cause a reaction between hydrogen and oxygen that produces water and releases a large amount of energy. This reaction is called **combustion** or **oxidation** and can be ignited by a spark or a flame³. The reaction is very fast and explosive and can be dangerous if not controlled. The overall chemical reaction for combustion of hydrogen is:

2 H2 + O2 → 2 H2O

I hope this helps you understand how H2 can be broken down and what methods are used to do so.

Mole of Coke cans (which is approximately 6.02 x 10²³ cans) would reach from here to Venus and back approximately (6.67 x 10¹¹ cans) / (6.02 x 10²³ cans/mol) = 1.11 x 10⁻¹² moles.

Mole is widely used in chemistry as a way to express amounts of reactants and products of chemical reactions.

Total distance traveled = distance from Earth to Venus and back = 2 x 40,000,000,000 meters

So, Number of cans needed = Total distance traveled / height of one can

= (2 x 40,000,000,000 m) / (0.12 m)

= 6.67 x 10¹¹ cans

Therefore, a mole of Coke cans (which is approximately 6.02 x 10²³ cans) would reach from here to Venus and back approximately (6.67 x 10¹¹ cans) / (6.02 x 10²³ cans/mol) = 1.11 x 10⁻¹² moles.

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KCl is the molecule which has the highest boiling point.

Rather, it's underneath building block forces. building block forces (ionic, covalent, metallic) are to blame for binding atoms along inside a molecule. These are stronger than building block forces, therefore creating them more durable to interrupt. Therefore, KCl has the highest boiling point.

A molecule is 2 or additional atoms connected by chemical bonds, that kind the tiniest unit of a substance that retains the composition and properties of that substance. Molecules kind the idea of chemistry. Molecules are noted with the part image and a subscript with the quantity of atoms.

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Digital road maps are different from paper and road maps in that they allow users to plan routes before a trip, they can be used anywhere in the world, and they can be updated almost immediately. They also show both major and minor roads in a region.

Digital road maps are a type of digital map that is based on GIS data. This data is collected from various sources and is used to create a detailed representation of the real world.  The digital road map allows the user to zoom in and out and to see different levels of detail, depending on their needs. They also allow the user to search for specific locations, find directions, and plan routes before they begin their trip.

On the other hand, paper maps are usually printed on paper and can be difficult to read in low light conditions. They are also limited in the amount of detail that they can show, and they may not always be up-to-date.

Road maps, on the other hand, are a type of map that shows roads and highways in a region. They may include some additional features such as rest areas, gas stations, and other points of interest. Road maps are typically printed on paper and are often used for navigation while driving. They are not as detailed as digital road maps, and they can quickly become outdated as new roads are built.

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Answer:

ur correct

Explanation:

Answer:

1.184 g

Explanation:

% of H in NH3= 17% and % of O in NO2 = 69%

             = 14 + (3 x 1)

             = 17

             % of H in NH3 = 3/17 x 100

                        = 17%

              = 14 + (16 x 2)

              = 14 +32 = 46

              % of O in NO2 = 32/46x 100

                        = 69%

The mass of a given molecule is its molecular mass (m), which is expressed in daltons (Da or u). Because they contain various isotopes of an element, multiple molecules of the same substance can have distinct molecular weights. According to IUPAC, the related quantity relative to molecular mass is a unitless comparison between the mass of a molecule and the unified atomic mass unit (also called the dalton). The molar mass is unrelated to, but distinct from, the molecular mass and relative molecular mass. The molar mass, which is stated in g/mol, is defined as the mass of a specific material divided by the amount of a substance

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Based on the mole ratio of the reaction, the mass of aluminum oxide that is produced from the reaction between 5 g of aluminum and 9g of oxygen is 9.39 g.

The mass of aluminum oxide that can be formed from the reaction between aluminum and oxygen is determined from the limiting reactant and the mole ratio of the reaction.

The mole ratio of the reaction is as given in the equation of the reaction below:

2 Al (s) + 3 O₂ (g) ----> Al₂O₃ (s)

The mole ratio of Al to O = 2 : 3

Moles of Al present = 5/27

Moles of Al present = 0.185 moles

Moles of O present = 9/32

Moles of Al present = 0.281 moles

Al is the limiting reactant

Mole ratio of Al to Al₂O₃ = 2 : 1

Mass of Al₂O₃ produced = 0.185/2 * 101.56

Mass of Al₂O₃ produced = 9.39 g

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Answer:

4 millllllermeeters jb

Answer:

1. I

2.LOVE

3.YOU

JUST KIDDING

REAL ANSWER

Therefore, to get a neutral compound requires two Br and one Ca - ie, CaBr2.

hope it helps pleass give me a brainlliest answer love youu

Due to the principle of overlay, in an intact sequence of sedimentary stones, every single layer of rock is elder that the one above and younger that the one below it, with the oldest rocks at the bottom as the latest ones at the top

The multiple vertical layers of sedimentary material demonstrate the original horizontality concept (see Figure below). The law in deposition states that the youngest layers of rocks occupy the highest point whereas the earliest were at the bottom.

The Theory of superposition, that asserts that in an unbroken horizontal succession of rocks, the most ancient layers are on the bottom, and gradually younger ones on top, aids geologists in correlating rock strata all around the world.

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Answer:

It's called a subscript.

Explanation:

Subscripts tell you how many atoms of an element are in a compound.

Answer:

qrtyuioplkjhgfdssssssazxcvbn

Answer:

(a) Electrode reactions:

Pt/H+/H2: 2H+(aq) + 2e- -> H2(g) (reduction)

Ag/AgCl/Cl-: AgCl(s) + e- -> Ag(s) + Cl-(aq) (reduction)

Overall cell equation: 2AgCl(s) + H2(g) -> 2Ag(s) + 2HCl(aq)

(b) Direction of motion of ions and electrons:

In the Pt/H+/H2 half-cell, hydrogen ions (H+) move towards the platinum electrode and accept electrons to form hydrogen gas (H2). In the Ag/AgCl/Cl- half-cell, silver ions (Ag+) move towards the silver chloride (AgCl) electrode and accept electrons to form silver (Ag) metal while chloride ions (Cl-) move away from the electrode. Electrons move from the hydrogen electrode to the silver electrode through the external circuit.

(c) Electrode labeling:

The Pt/H+/H2 electrode is the cathode (-) and the Ag/AgCl/Cl- electrode is the anode (+).

(d) Standard cell potential (Eo):

The standard cell potential can be calculated using the standard reduction potentials for each half-cell:

Eo(cell) = Eo(reduction, Ag/AgCl/Cl-) - Eo(reduction, Pt/H+/H2)

Eo(reduction, Ag/AgCl/Cl-) = +0.222 V (from standard reduction potential tables)

Eo(reduction, Pt/H+/H2) = 0 V (by definition)

Eo(cell) = +0.222 V - 0 V = +0.222 V

(e) Actual cell potential (E):

E(cell) = Eo(cell) - (0.0592 V / n) * log[H3O+]

where n is the number of electrons transferred in the balanced equation (2 in this case)

E(cell) = +0.222 V - (0.0592 V / 2) * log(1.0 x 10^-4 M)

E(cell) = +0.222 V - (0.0296 V) = +0.1924 V

(f) Values of constants A and B:

E(cell) = A + B.pH

At pH 7 (neutral), E(cell) = Eo(cell) = +0.222 V

Therefore, A = +0.222 V and B = -0.0592 V/pH

Active transport requires energy to transport the molecules across the cell membrane. Thus, Option A is correct.

Active transport is the transport of molecules from a lower concentration to a higher concentration across the cell (plasma) membrane. As this process is against the concentration gradient, it requires cellular energy to transport the molecules or ions. Active transport involves Primary active transport and secondary active transport.

Passive transport involves the movement of molecules from a higher to lower concentration gradient and thus does not require energy and is slower than active transport.

Therefore, only active transport requires energy for the transportation of molecules across the cell membrane.

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Answer:

2.25 atm

Explanation:

Given data

Step 1: Convert the pressure of nitrogen to atm

We will use the relationship 1 atm = 101.325 kPa.

\(321kPa \times \frac{1atm}{101.325kPa} = 3.17 atm\)

Step 2: Convert the pressure of oxygen to atm

We will use the relationship 1 atm = 14.6959 psi.

\(74.0psi \times \frac{1atm}{14.6959psi} =5.04atm\)

Step 3: Calculate the partial pressure of hydrogen

The total pressure is the sum of the partial pressures.

P = pN₂ + pO₂ + pH₂

pH₂ = P - pN₂ - pO₂

pH₂ = 10.46 atm - 3.17 atm - 5.04 atm

pH₂ = 2.25 atm

Answer:

\(P_H=2.25atm\)

Explanation:

Hello,

IN this case, we can apply the Dalton's law in order to understand the pressure behavior of a mixture as the summation of all the pressures of the compounds in the mixture, in this case, nitrogen, oxygen and hydrogen:

\(P_T=P_O+P_N+P_H\)

So, since we are asked to compute the pressure of hydrogen, we simply solve for it:

\(P_H=P_T-P_O-P_N=10.46atm-74.0psi*\frac{1atm}{14.6959psi} -321kPa*\frac{1atm}{101.325kPa} \\\\P_H=2.25atm\)

Best regards.

The sum of the coefficients for all reactants and products is: 12.

Here, we first need to balance the equation of the reaction between Fe2S3(s) and H+.

The sum of the coefficients for all reactants and products is therefore;

Sum = 1 + 6 + 3 + 2.

Sum of coefficients = 12

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Answer:

1.242 g/mL

Explanation:

Step 1: Given data

Mass of the empty container (m₁): 80.21 g

Mass of the filled container (m₂): 105.22 g

Volume of the unknown liquid (V): 20.14 mL

Step 2: Calculate the mass of the liquid

The mass of the liquid is equal to the difference between the mass of the filled container and the mass of the empty container.

\(m = m_2 - m_1 = 105.22g - 80.21 g = 25.01 g\)

Step 3: Calculate the density of the unknown liquid

The density of the liquid is equal to its mass divided by its volume.

\(\rho = \frac{m}{V} = \frac{25.01g}{20.14mL} = 1.242 g/mL\)

Answer: International Union of Pure and Applied Chemistry

The International Union of Pure and Applied Chemistry (IUPAC), established in 1919, is the international body that represents chemistry and related sciences and technologies.

Answer:

Explanation:

First convert the grams of Calcium Bromide to moles by using the atomic weight. Then use the formula for molarity, which is moles per liter.

CaBr2 = 199.9 g/mol

10/199.9 = 0.05 moles of CaBr2

\(0.5M=\frac{0.05mol}{x}\)

x = 0.1L or 100mL

Exothermic refers to chemical interactions that aerobic respiration. Combustion reactions release higher energy. Endothermic refers to atoms and molecules that either use or absorb reactive power.

A chemical process known as an endothermic releases energy as heat or light. It is an endothermic reaction's opposite. Chemical equation expressed as reactants + products + energy. An reaction mechanism is one in which electricity is given off as light or warmth.

A response is deemed to be exothermic if it produces heat while also undergoing a net decrease in basic enthalpy change. Samples include those type of combustion, iron rust, including water froze. Exothermic processes are those that discharge heat and energy into the surroundings.

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