Identify each type of bond:

Answer:

I think D

Explanation:

Your cell phone number and your driver's license number are the numbers of your personal life that are exact.

In this context, an exact number refers to a number that if it undergoes any modification will not refer to the same thing that it referred to before that modification.

For example, my phone number is 12345. This number is exact because it cannot be changed because or else it would cease to be my phone number, that is, if someone wants to call me and writes the number 12346 it is no longer my number.

Addicionally, if my driver's license number is 112233 it is an exact number because if it is modified it would be the number of another driver.

According to the above, options B, C, and E are incorrect because they are inaccurate numbers because if they are modified they all refer to me and they would not change their meaning.

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Based on the given reactions, the compounds are as follows:

A: The specific product formed from the reaction between prop-1-yne and either 2HBr or H2O2.

B: The product formed when compound A reacts with 2H2O.

C: The product formed when compound B reacts with K2CO3(aq).

D: The product formed from the heat-induced reaction of compound C.

E: The product formed when compound D reacts with HBr.

Based on the given reactions, let's analyze the compounds involved:

Reaction 1: prop-1-yne + 2HBr/H2O2 = A

The reactant prop-1-yne reacts with either 2HBr or H2O2 to form compound A. The specific product formed will depend on the reaction conditions.

Reaction 2: A + 2H2O = B

Compound A reacts with 2H2O (water) to form compound B.

Reaction 3: B + K2CO3(aq) = C

Compound B reacts with K2CO3(aq) (potassium carbonate dissolved in water) to form compound C.

Reaction 4: C + heat = D

Compound C undergoes a heat-induced reaction to form compound D.

Reaction 5: D + HBr = E

Compound D reacts with HBr (hydrobromic acid) to form compound E.

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The oxidation state of nitrogen (N) in NaNO3 is +5. option B

To determine the oxidation state of nitrogen (N) in sodium nitrate (NaNO3), we need to assign oxidation numbers to each element in the compound.

In NaNO3, we know that the sodium ion (Na+) has a +1 oxidation state because it is an alkali metal. Oxygen (O) typically has an oxidation state of -2 in compounds, and there are three oxygen atoms in NaNO3. Since the compound is neutral, the sum of the oxidation states must be zero.

Let's assume that the oxidation state of nitrogen is x. Therefore, we can set up the equation:

(+1) + x + (-2) * 3 = 0

Simplifying the equation:

+1 + x - 6 = 0

x - 5 = 0

x = +5

Therefore, the oxidation state of nitrogen (N) in NaNO3 is +5.

The oxidation state of an element indicates the number of electrons it has gained or lost in a compound. In this case, the nitrogen atom in NaNO3 has gained five electrons to achieve a stable oxidation state of +5.

It is important to note that oxidation states are formal charges and do not necessarily represent the actual distribution of electrons in a compound. They are assigned based on a set of rules and can be useful in understanding the reactivity and behavior of elements in chemical reactions.

Option B

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Answer:

i don't understand

Explanation:

Answer

The differences between ionic and covalent compounds are listed below:

1. Ionic compounds are formed by the complete transfer of electrons whereas covalent compounds are formed by sharing of electrons between two atoms.

2. Ionic compounds exist in a solid state whereas covalent compounds in all states of matter -solid, liquid, and gas.

3. Ionic compounds have high melting and boiling points than covalent compounds.

4. Ionic compounds are soluble in water and they are good conductors of electricity in the molten state and as well as in an aqueous solution whereas covalent compounds are insulators -do not conduct electricity in the molten state and as well as in an aqueous solution.

Answer:

Explanation:

The density of a substance can be found by using the formula

\(density = \frac{mass}{volume} \\ \)

volume = final volume of water - initial volume of water

volume = 60 - 25 = 35 mL

From the question we have

\(density = \frac{140}{35} \\ \)

We have the final answer as

Hope this helps you

5.64 I think, I'm sorry if I'm wrong

Answer:

Honestly, I don't really have a favorite thing. But that being said if my favorite thing CAME TO LIFE (also saying was brought to the world) would be ending violence against animals & humans.

Explanation:

BUTTTTTTTTT I know what you are talking about, If my favorite thing came to life, it may be my bed, or school supplies. (I'm a office supplies addict) ik Its weird. But that's my answer ahaha!

Hope you have an amazing day!

*sorry for my confusing first paragraph*

Answer:

The actual yield is 268g.

Explanation:

1st) It is necessary to balance the chemical reaction:

From the balanced reaction we know that 1 moles of Fe2(SO4)3 is formed from 2 moles of Fe and 3 moles of H2SO4.

2nd) With the molar mass of Fe2(SO4)3, we have convert the mole to grams:

- Fe2(SO4)3 molar mass: 400g/mol

So, 1 mole of Fe2(SO4)3 is equal to 400g. This will be the Theroretical yield.

3rd) Now, with the Theoretical yield and the Percent yield, we can calculate the Actual yield of Fe(SO4)3:

Finally, the actual yield is 268g.

Answer:

Molecular:

Ba(NO3)2 + K2CO3 -> BaCO3 + 2KNO3

Complete ionic:

Ba2+ + 2NO3- + 2K+ + CO3 2- -> BaCO3 + 2K+ + 2NO3-

Net ionic:

Ba2+ + CO3 2- - > BaCO3

Explanation:

Molecular consists of all species reacting.

Complete ionic consists of all ionic species (ex. K+, NO3-) separated, as well as any compounds that didn't dissociate into ions (BaCO3 doesn't dissolve).

Net ionic doesn't include spectator ions (in this case, nitrate and potassium) and only species that aren't present on both sides of the arrow (barium and carbonate become a solid precipitate, so the ions aren't present as products, making them appear in the net ionic equation).

The forensic scientific method is a modified version of the scientific method that contrasts observable physical discoveries found at the crime scene, in the crime lab, or in the autopsy room with anamnestic evidence gathered by investigators.

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Answer:

Silver and copper are the two best conductors of heat and electricity. Lead is the poorest conductor of heat. Bismuth, mercury and iron are also poor conductors. Density: Metals have high density and are very heavy.

Answer:

Copper element is most likely to conduct heat.

The true statements are;

The reaction is endothermic

Heat is a reactant

ΔHrxn is 89 kJ/mol

Enthalpy is a thermodynamic property that represents the total energy of a system, including both its internal energy (the energy of its constituent particles) and the energy it has due to its temperature and pressure. It is commonly used in energy analysis and heat transfer calculations and is expressed in units of joules (J) or calories (cal).

We know that the enthalpy of the reaction can obtained from;

Enthalpy of the products - Enthalpy of the reactants

ΔH reaction = 2(-391.4) - 2(-435.9)

(-782.8) - (-871.8)

= 89 kJ/mol

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Answer:

90% to 97% pure tungsten in a matrix of nickel and copper or nickel and iron.

Explanation:

Heavy metal tungsten alloys are 90% to 97% pure tungsten in a matrix of nickel and copper or nickel and iron. The addition of these alloying elements improves both the ductility and machinability of these alloys over non-alloyed tungsten.

The person who answered your question is right, just commenting because otherwise the points would go to waste. Thank you and have a great day!

Answer:35.24 grams of are required to produce the given amount of Zinc oxide.

You are not permitted to eat in the lab, but you may consume beverages. Eating and drinking are permitted in the laboratory as long as there are no open cultures on the bench top.

A laboratory is a controlled environment in which scientific or technological research, experiments, and measurements can be carried out. Laboratory services are available in a variety of settings, including doctors' offices, clinics, hospitals, and regional and national referral centres.

The various requirements of the specialists working within laboratories determine the organisation and content of laboratories. A physics laboratory might have a particle accelerator or a vacuum chamber, whereas a metallurgy laboratory might have equipment for casting, refining, or testing metal strength. A wet laboratory may be used by a chemist or biologist, whereas a psychologist's laboratory may be a room with one-way mirrors and hidden cameras to observe behaviour.

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Explanation:

32.065u

Hope it helps you

Experiment: Does it Dissolve?

Materials Needed:

Step 1: Form a question before starting the experiment.

Step 2: Make a hypothesis for each substance.

Step 3: Scoop a teaspoon of each substance in the jars, only adding one substance per jar. Stir it up!

Step 4: Observe whether or not each substance dissolves and record the findings.

The wavelength of the radiation emitted by the argon ion laser is \(4.854 * 10^-7 m\).

Wavelength is a property of any type of wave that refers to the distance between two adjacent points on the wave that is in phase, i.e., at the same point in their respective cycles. It is usually denoted by the Greek letter lambda (λ) and is measured in units of length, such as meters or nanometers.

The energy carried by the photon (E) is related to the wavelength (\(\lambda\)) through the following equation:

\(E=hc/\lambda\); where 'h' is the Plank's Constant and 'c' is the speed of light which is \(3* 10^{-7} m/s\).

We can say that

\(\lambda - hc/E\)

Now after substituting the given values, we get:

\(\lambda = (6.626 * 10^{-34} J.s * 3.00 * 10^8 m/s) / (4.071 * 10^{-19} J)\\\lambda = 4.854 * 10^-7 m\)

Therefore the wavelength of the radiation emitted by the argon ion laser is \(4.854 * 10^-7 m\).

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Answer:

A

I honestly think it's A, but I could be wrong. It might be B, but I don't think so.

Answer:

The reaction rate decreases with a decrease in temperature. Catalysts can lower the activation energy and increase the reaction rate without being consumed in the reaction. Differences in the inherent structures of reactants can lead to differences in reaction rates.

Explanation:

The number one produced chemical in the United States is fertilizer ammonia.

What is a fertilizer?

A fertilizer is any natural or synthetic material that is applied to soil or plant tissues to supply plant nutrients. Fertilizers can be distinguished from liming materials or other non-nutritional soil amendments. There are numerous fertilizer sources, both natural and man-made.   Fertilization in most modern agricultural practices focuses on three main macronutrients: nitrogen (N), phosphorus (P), and potassium (K), with the occasional addition of micronutrient supplements such as rock dust. Farmers apply these fertilizers in a variety of ways, including using large agricultural equipment or hand-tool methods, and applying them dry, pelletized, or liquid.

Hence, the number one produced chemical in the United States is fertilizer ammonia.

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Answer:

what

Explanation:

Answer: Energy = 6.0236 X 10 ^-19J per atom and  362.80KJ/mol

Explanation:

The energy of a photon is given by:

E = hf

but f =c/ λ

therefore E= = hc/ λ

Where h is the Planck constant, 6.626x10^-34 J*s

c = speed of light =  3.0 x 10 ^ 8 m/s

λ n= wavelength = 330nm

but  10^9 nm = 1m

330nm= 3.30 x 10^-7m

E= 6.626 X 10 ^-34Js  X3.0 x 10 ^ 8 m/s / 3.30 x 10^-7m

= 6.0236 X 10 ^-19J per atom ---Which is  energy of a single photon,

Now 1 mole =  6.022x10^23 units, (Avogadro number)

therefore , the  energy per  1 mole of photons is

6.0236 x 10^-19 J/atm X 6.023 X 10 ^23 atm/ 1 mol = 362,803.618J/mol

changing to KJ/mol becomes    362,803.618/ 1000= 362.80KJ/mol

Answer:

I would say Polar

Explanation:

Answer: bacteria: e Coli

Explanation:

The bacteria and archaea  are microorganisms. Escheria coli, staphylococcus aureus etc are examples of bacteria. Different types of archaea includes bathyarchaeota, thermoproteota etc. Eukaryotes are multicellular organisms such as plants, fungi, animals etc.

Eukaryotes are multicellular organisms with developed cellular organization and developed nucleus. All the higher level organisms such as humans, animals, fungi, plants etc are eukaryotes.

Microorganisms such bacteria are single celled organisms and they are called unicellular having only one cell without a developed nucleus.There are many types of bacteria based on  their structure and functions such as spirulina, staphylococcus, vibrio coli etc.

Archaea is another type of unicellular organism which first classified as type of bacteria, but later they are included in a new class of domain. They are natural methanogens that is they produce methane gas. Some examples are bathyarchaeota, thermoproteota etc.

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Answer:

cup...................