give the iupac names for the following compounds. use the abbreviations o, m, or p (no italics) for ortho, meta, or para if you choose to use these in your name. for positively charged species, name them as aryl cations.

Answer:

because they need only one electron

An oxygen molecule at 25◦C has a speed of 1520 miles/hour.

As we know

1 km = 1000 meter

So,

678  / 1000 = 0.678 km

And 1 mile = 1.6 km

So,

0.678 / 1.609 = 0.4213 miles

We know that 1 hour = 60×60 = 3600 sec

So,

1 sec = 1 / 3600

= 2.777 x 10⁻⁴ hour

Now finding speed,

speed = distance / time

speed = 0.4213 / 2.777 x 10⁻⁴

speed = 1520 miles/hour

Velocity is the rate and direction of an object's movement, whereas speed is the time rate at which an object is moving along a path. In other words velocity is a vector value, whereas speed is a scalar value.

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Answer: contact metamorphism

Explanation:

Contact metamorphism happens when a body of magma intrudes into the upper part of the crust. Heat is important in contact metamorphism, but pressure is not a key factor, so contact metamorphism produces non-foliated metamorphic rocks such as hornfels, marble, and quartzite.

The temperature of a sample of NO2 weighing 0.95 grams which has a volume of 0.65 liters when collected at 730 mm is 365K.

The value of temperature is calculated by using ideal gas equation.

PV = nRT

where,

P is the pressure on gas or substance

V is volume of sample

R is gas constant

n is the number of moles of sample

T is the temperature

Given,

P = 730 mmHg /760= 0.96atm

V = 0.65L

R = 0.0821

Molar mass of NO2 = 46gram

Given mass of NO2 = 0.95 g

moles = given mass /molar mass

= 0.95/ 46.

= 0.021mol

By substituting all the value in equation we get,

0.96× 0.65 = 0.021 × 0.0821× T

T = (0.96 × 0.65)/(0.021 × 0.0821)

T = 365K

Thus, we found that the temperature of a sample of NO2 weighing 0.95 grams which has a volume of 0.65 liters when collected at 730 mm is 365K.

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When this new mixture is then filtered, the salt in the salty water solution passes through the filter paper to form the filtrate and the sand remains as the residue.

The process of mixtures

A mixture is composed of two or more types of matter that can be present in varying amounts and can be physically separated by using methods that use physical properties to separate the components of the mixture, such as evaporation, distillation, filtration and chromatography.

When water mixes with carbon dioxide, a substance called carbonic acid is formed. Carbonic acid is a weak acid that plays an important role in the carbon cycle. The carbon cycle is the process through which carbon moves from the atmosphere, to plants, then to animals, to the soil, and and back into the atmosphere.

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Answer:

Arcuate: A fan-shaped delta, bowed or curved.

Cuspate: V-shaped delta.

Bird-foot: Outstretched claws delta

Inverted: The narrow end of delta, or river delta.

Waves: Large or regular shaped waves delta.

Tires: Round shaped delta

River estuary: A landform deposited by sediment

Explanation:

Answer:

0.00235

Explanation:

The zeros at the beginning aren't significant, so include those zeros in your answer. The 6 at the end in greater than 5 so that rounds the 4 to up one number (In this case, it's 5).

This gives you 0.00235

Answer:

Ridges

Explanation:

Ridges separate watersheds

Hope this helped!

The scientific statement is

D. There is life on some other planet in the universe aside from Earth.

A scientific statement is a statement that is based on empirical evidence, logical reasoning, and the scientific method. It is a claim or proposition that can be tested, observed, or measured, and is subject to scrutiny and verification.

Scientific statements are characterized by objectivity, reliance on evidence, and the potential for falsifiability or validation through experiments or further investigation. these statements aim to describe, explain, or predict phenomena in the natural world and are an essential part of scientific inquiry and the advancement of knowledge.

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complete question

Which sentence is a scientific statement?

A.

Food cooked in ceramic pots has a better aroma than food cooked in copper pots.

B.

A tall glass of water tastes better with a lemon wedge and ice cubes.

C.

Today, there are more viewers watching baseball than ice hockey on television.

D.

There is life on some other planet in the universe aside from Earth

The two separate "phases" that make up chromatography are the mobile phase, which is the solvent that passes through the paper transporting various compounds, and the stationary phase. The stationary phase does not pass through the paper; it is contained there.

Chromatography is a technique for separating the components of a mixture. To begin the process, the mixture is dissolved in a substance known as the mobile phase, which then carries it through a substance known as the stationary phase. Chemical analysis uses chromatography, a laboratory technique, to separate a mixture into its component parts. The stationary phase is a material that is fixed in a system, and the mobile phase, which is a liquid solvent, dissolves the mixture and carries it through that system.

Chromatography is the most used separation process in chemical laboratories where it is used for analysis, isolation, and purification. It is frequently used in both small- and large-scale production in the chemical process sector.

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There are 0.0204 moles of ammonia per gram of complex.

a. To find the moles of HCl used, you can use the formula:

moles = concentration × volume (in liters)

Therefore, putting the values in the above equation;

Moles of HCl = (0.6859 M) × (25.65 mL × 0.001 L/mL)

                      = 0.01758 moles

b. In the reaction between the ammonia complex and HCl, one mole of HCl reacts with one mole of ammonia.

So, the moles of ammonia in the sample are equal to the moles of HCl used.

Moles of ammonia = 0.01758 moles

c. To find the moles of ammonia per gram of complex, divide the moles of ammonia by the mass of the complex (in grams).

Moles of ammonia per gram of complex = (0.01758 moles) / (0.862 g)

                                                                   = 0.0204 moles/g

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Answer:

High melting point.

Explanation:

An example of a high melting point would be: 4215 K (3942 °C, 7128 °F).

Answer:

High melting point.

Explanation:

There are 6 σ bonds and 3 π bonds in H₃C-CH₂-CH═CH-CH₂-C≡CH.

In the given chemical structure, σ (sigma) bonds are formed by the overlap of atomic orbitals in a head-to-head fashion. These bonds allow for the sharing of electrons between the atoms involved. Each single bond, whether between carbon and hydrogen or carbon and carbon, is a σ bond. Therefore, we count the number of single bonds to determine the number of σ bonds.

In this molecule, there are six single bonds: three between carbon and hydrogen  and three between carbon and carbon.Hence, there are 6 σ bonds in total.

In the given structure, there are three double bonds: one between carbon atoms (═), one between carbon and carbon (ch═ch), and one between carbon and carbon (c≡ch). Each double bond consists of one σ bond and one π bond.

Therefore, there are 6 σ bonds and 3 π bonds in the given chemical structure.

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Answer:

D) C₄H₉OH

Explanation:

In chemistry, isomers are chemical substances with the same formula (That is, same atoms but in different structures).

For the compound C₂H₅OC₂H₅ there are 4 atoms of C, 10 atoms of H and 1 atom of O.

A) CH₃COOH . This compound have 2 atoms of C, 4 atoms of H and 2 atoms of O. Thus, isn't an isomer.

B) C₂H₅COOCH₃. There are 4 atoms of C but 8 atoms of H and 2 atoms of O. Isn't an isomer

C) C₃H₇COCH₃. There are 5 atoms of C, 10 atoms of H and 1 atom of O. Thus, isn't an isomer

D) C₄H₉OH. Here, you have 4 atoms of C, 10 atoms of H and 1 atom of O. That means this structure is the isomer of C₂H₅OC₂H₅

Answer:

D - combining it's potential energy with it's kinetic energy

Solution:-1

\(\\ \sf\longmapsto E=hv\)

Solution:-2

\(\boxed{\sf \lambda=\dfrac{c}{v}}\)

\(\\ \sf\longmapsto v=\dfrac{c}{\lambda}\)

\(\\ \sf\longmapsto v=\dfrac{3\times 10^8m/s}{3000\times 10^{-10}m}\)

\(\\ \sf\longmapsto v=0.001\times 10^{18}s^{-1}\)

\(\\ \sf\longmapsto v=1.0\times 10^{15}s^{-1}\)

Now

\(\\ \sf\longmapsto E=hv\)

\(\\ \sf\longmapsto E=6.626\times 10^{-34}Js\times 1.0\times 10^{15}s^{-1}\)

\(\\ \sf\longmapsto E=6.6\times 10^{-19}J\)

The fish would not survive because the amount of the oxygen corresponds only to 0.0047ppm.

We know that the ppm is one of the units that can be used to measure the concentration. Note that the ppm is the acronymn that stands for parts per million.

In this case, we have to note that the parts per million that we talking about in the problem that we have here is actually mL or oxygen per mL of water. We can see that in the case that we have, the amount of the oxygen is 0.0047 mL in 1L of water which is less than the threshold amount required.

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Answer:

4Fe + 3O2 → 2Fe2O3

MgBr2 is a electrolyte because solubility rules it is soluble

The elements with the higher first ionization include; P, Si, Sb, and Ge

a) P (Phosphorus) has a higher first ionization energy compared to I (Iodine).

b) Si (Silicon) has a higher first ionization energy compared to Cl (Chlorine).

c) Sb (Antimony) has a higher first ionization energy compared to P (Phosphorus).

d) Ge (Germanium) has a higher first ionization energy compared to Ga (Gallium).

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Answer:

q = mC∆T

q = heat = ?

m = mass = 6.30 g

C = specific heat = 0.385 J/g/deg

∆T = change in temperature = 32-20 = 12º

q = ((6.30 g)(0.385 J/g/deg)(12 deg) = 29.1 J (to 3 significant figures)

Explanation:

Gold is found in various ionic compounds, but one of the most well-known and commercially significant compounds is gold chloride, also known as auric chloride or gold(III) chloride.

The chemical formula for gold chloride is AuCl₃. Gold chloride is an ionic compound composed of gold cations (Au³⁺) and chloride anions (Cl-). It is a yellow-orange solid that is highly soluble in water. Gold chloride can be formed by reacting the gold metal with chlorine gas or by dissolving the gold metal in aqua regia, which is a mixture of concentrated nitric acid and hydrochloric acid.

Gold chloride has several uses and applications. It is commonly used in the field of nanotechnology for the synthesis of gold nanoparticles. These nanoparticles have unique optical, electronic, and catalytic properties, making them valuable in various fields such as medicine, electronics, and materials science.

In addition to gold chloride, gold can also form other ionic compounds with different anions, such as gold bromide (AuBr), gold iodide (AuI), gold sulfide (Au2S), and gold cyanide (AuCN). These compounds have their own unique properties and applications.

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The heat released when 10.0 g of Fe and 2.00 g of O2 are reacted can be determined by calculating the heat of reaction using the stoichiometry and the molar heat of formation of the products and reactants.

The enthalpy change of the reaction (∆H) can be calculated using the balanced chemical equation and the molar heat of formation values. By determining the moles of Fe and O2 using their molar masses, the limiting reactant can be identified. The moles of the limiting reactant can then be used to calculate the moles of the product, Fe2O3, and its corresponding heat release. Finally, the heat released can be determined by multiplying the moles of Fe2O3 by its molar heat of formation.

Explanation: To calculate the heat released, we first determine the moles of Fe and O2 by dividing their masses by their molar masses. The balanced chemical equation for the reaction is 4Fe + 3O2 → 2Fe2O3. From the equation, we can see that the stoichiometric ratio between Fe and Fe2O3 is 4:2 or 2:1. By comparing the moles of Fe and O2, we identify the limiting reactant, which is the one with fewer moles. Assuming Fe is the limiting reactant, we can calculate the moles of Fe2O3 formed using the stoichiometry. Next, we multiply the moles of Fe2O3 by its molar heat of formation (∆Hf) to obtain the heat released. The molar heat of formation of Fe2O3 is a constant value that represents the enthalpy change when 1 mole of Fe2O3 is formed from its elements in their standard states. By multiplying the moles of Fe2O3 by its ∆Hf, we can calculate the heat released in the reaction.

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Answer:

where two plates meet and ring of fire

Answer:

1. Volcanoes and earthquakes often occur where two plates meet.

Explanation:

2. Earthquakes and volcanoes are frequent along The Ring of Fire

Statement B and statement C are scientific claims for the Mars planet.

Mars has ice caps present at its north and south poles. A permanent portion of the north polar ice cap contains almost water ice. In the northern hemisphere winter, this ice cap gains a coating of frozen carbon dioxide about one meter.

In the southern hemisphere winter, the south polar ice cap acquires a thin layer of frozen carbon dioxide coating. The top layer of the ice cap consists of frozen carbon dioxide and is about 8 meters thick.

Mars is an excellent place to explore because it has many similarities to Earth. Mars was once full of water, warmer, offering a potentially habitable environment, and had a thicker atmosphere.

Designing a mission for Mars would become easier if we could use resources that are already available there. Water is a great resource for human expeditions, both consumed for fuel and by astronauts.

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Answer:

5/4 I think this is my first anser