please help fast thank yuo

Answer:

C is your correct answer i blieve

The element gallium has equal freezing point and melting point owing to which on pouring liquid gallium in container it becomes a solid.

An element is defined as a substance which cannot be broken down further into any other substance. Each element is made up of its own type of atom. Due to this reason all elements are different from one another.

Elements can be classified as metals and non-metals. Metals are shiny and conduct electricity and are all solids at room temperature except mercury. Non-metals do not conduct electricity and are mostly gases at room temperature except carbon and sulfur.

The number of protons in the nucleus is the defining property of an element and is related to the atomic number.All atoms with same atomic number are atoms of same element.

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Bromobenzene is converted to a compound with the molecular formula c7h7br in the following reaction scheme.

Bromobenzene is an organic compound with the chemical formula C6H5Br. It is a colorless liquid with a sweet, pungent odor. It is used in the production of dyes, pharmaceuticals, and other organic compounds.

Bromobenzene + NaNH2 --> 1-Phenyl-2-bromoethanamine + NaBr

Reagents: Bromobenzene, NaNH2

Products: 1-Phenyl-2-bromoethanamine, NaBr

1-Phenyl-2-bromoethanamine + KOH --> 1-Phenyl-2-hydroxyethanamine + HBr

Reagents: 1-Phenyl-2-bromoethanamine, KOH

Products: 1-Phenyl-2-hydroxyethanamine, HBr

1-Phenyl-2-hydroxyethanamine + HBr --> 2-Bromo-1-phenylethanone + NaBr

Reagents: 1-Phenyl-2-hydroxyethanamine, HBr

Products: 2-Bromo-1-phenylethanone, NaBr

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Answer:

First answer is correct, please let me know if you need any help though!

The type of battery used in the Prius, a hybrid car produced by Toyota, is a Nickel-Metal Hydride (NiMH) battery. According to the maker's claims, this battery should not have to be recharged or replaced.

The Prius originally used Nickel-Metal Hydride (NiMH) batteries for its hybrid powertrain. NiMH batteries are known for their higher energy density compared to conventional lead-acid batteries. They are capable of storing and delivering a significant amount of energy, making them suitable for powering the electric motor in hybrid vehicles like the Prius. The manufacturer claims that the NiMH battery in the Prius is designed to last for the lifetime of the car without needing to be recharged or replaced.

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Answer:

will go do that.

Explanation:

Answer:

the 2nd choice, nervous and muscular

To test the effect of an acidic fluid on enzymatic activity, we could design an experiment using the enzyme lactase and its ability to break down lactose.

First, we would prepare a solution of lactase and lactose in a test tube. We would also prepare two solutions of different pH levels, one acidic and one neutral.

Next, we would add a small amount of the acidic solution to one test tube and the neutral solution to another test tube. A control test tube with just lactase and lactose in a neutral solution would also be prepared.

We would then monitor the reaction of lactase on lactose in each test tube by measuring the amount of glucose produced over time using a glucose meter.

If the acidic solution inhibits the enzymatic activity of lactase, we would expect to see a lower amount of glucose produced compared to the neutral and control test tubes.

By comparing the results of the different test tubes, we can determine the effect of an acidic fluid on enzymatic activity.

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Answer:

Cu

Explanation:

Ar's atomic number is 18 so it has 18 electrons

therefore 18 + (10 + 1) = 29

At ground state, electrons = protons.

Element with atomic number of 29 is Cu

Answer:

1.5 ohm

Explanation:

\(I=\frac{E}{R} \\\\4=\frac{6}{R} \\R =\frac{6}{4}\)

Iron filings burning when sprinkled over a gas flame to produce iron(III) oxide is an example of a combustion reaction.

.In this case, the iron filings (Fe) react with oxygen from the gas flame to form iron(III) oxide (Fe₂O₃). The reaction can be represented by the following equation:

4Fe + 3O₂ → 2Fe₂O₃

During the combustion process, the iron filings undergo a chemical change as they combine with oxygen to form a new compound, iron(III) oxide. This reaction is exothermic, meaning it releases energy in the form of heat and light. The heat produced causes the iron filings to burn, resulting in the formation of iron(III) oxide.

Iron(III) oxide is a reddish-brown compound commonly known as rust. It has a different chemical composition and physical properties compared to the original iron filings. The reaction between iron and oxygen is highly exothermic, making it a suitable demonstration for the combustion process.

In summary, the burning of iron filings when sprinkled over a gas flame to produce iron(III) oxide is a combustion reaction where iron reacts with oxygen to form a new compound, releasing heat and light in the process.

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Answer:

Measure its mass

Measure its volume

Measure its number of moles

Explanation:

The best estimate for the amount of energy released in this hypothetical nuclear decay process is approximately 1.503 x 10^-10 joules.

The amount of energy released in a nuclear decay process can be calculated using Einstein's famous equation:

E = mc^2

where E is the energy released, m is the mass that is transformed, and c is the speed of light.

In this hypothetical nuclear decay process, the mass of one proton is transformed into energy. The mass of a proton is approximately 1.0073 atomic mass units (amu) or 1.6726 x 10^-27 kg. Using this value for m, and the speed of light, c = 299,792,458 m/s, we can calculate the energy released:

E = (1.6726 x 10^-27 kg) x (299,792,458 m/s)^2

E = 1.503 x 10^-10 joules

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Answer:

It is false

Explanation:

ph value below 7 are acidic, and ph values above 7 are alkaline (basic)

Answer:

The number of protons in one atom of an element determines the atom's identity, and the number of electrons determines its electrical charge. The atomic number tells you the number of protons in one atom of an element.

Answer:

22.4/3.8=5.89

Explanation:

Answer:

Allow movement

Explanation:

The skeleton provides structure and allows the body to move

Answer:

6.4 L

Explanation:

When all other variables are held constant, you can use Boyle's Law to find the missing volume:

P₁V₁ = P₂V₂

In this equation, "P₁" and "V₁" represent the initial pressure and volume. "P₂" and "V₂" represent the final pressure and volume. You can find the theoretical volume by plugging the given values into the equation and simplifying.

P₁ = 3.2 atm                      P₂ = 1.0 atm

V₁ = 2.0 L                          V₂ = ? L

P₁V₁ = P₂V₂                                                    <----- Boyle's Law

(3.2 atm)(2.0 L) = (1.0 atm)V₂                        <----- Insert values

6.4 = (1.0 atm)V₂                                           <----- Simplify left side

6.4 = V₂                                                        <----- Divide both sides by 1.0

Answer:

6.4L or C on Brainly.

Explanation:

Answer:

Your missing the entire Transitional Metal group as well as all the Lanthanides and Actinides.

Explanation:

The groups are:

Alkali metals.

Alkaline earth metals.

Transitional metals.

Crystallogens.

Pnictogens.

Chalcogens.

Halogens.

Noble gases.

Based on the analysis, the lesson that the Egyptians did not learn from the Hyksos invasion is option e) The reliance on isolationism.

To identify the lesson that the Egyptians did not learn from the Hyksos invasion, we need to understand the historical context of the event and the subsequent actions taken by the Egyptians. The Hyksos invasion occurred during the Second Intermediate Period of ancient Egypt (17th century BCE) when a Semitic-speaking people from the Levant conquered Lower Egypt.

Step 1: Identify the lessons learned from the Hyksos invasion:

a) The importance of military strength: The Egyptians learned the significance of a powerful military to protect their borders and maintain stability.

b) The adoption of new military technologies: The Hyksos introduced horse-drawn chariots, composite bows, and other military advancements. The Egyptians learned the value of incorporating such technologies into their own military.

Step 2: Analyze the options:

c) The importance of diplomacy and alliances: The Hyksos invasion highlighted the need for Egypt to forge alliances with other regional powers. This lesson was likely learned by the Egyptians.

d) The significance of cultural assimilation: The Hyksos introduced aspects of their own culture to Egypt, including the worship of foreign deities. The Egyptians likely learned the importance of cultural assimilation to prevent social unrest.

Step 3: Determine the answer:

Based on the analysis, the lesson that the Egyptians did not learn from the Hyksos invasion is option e) The reliance on isolationism. The Egyptians recognized the importance of engaging with the outside world, forming alliances, and adopting new military technologies. Isolationism would have hindered their ability to defend against future invasions and integrate beneficial influences from other cultures.

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The option that was not a ""lesson"" that the Egyptians learned from the hyksos invasion is X bronze metallurgy the best defense

According to legend, a mystery tribe of alien invaders known as the Hyksos took control of the Nile Delta around 1638 B.C.However, there are few documented accounts of the dynasty, and modern archaeologists have uncovered little physical remnants of the historic military operation.

An invasion is when an army enters a territory, typically as part of a hostile attack during a war or other conflict. The world's history is replete with accounts of invasions.

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missing options;

Security depended upon the maintenance of ma'at.

X bronze metallurgy the best defense

Question 19: The fusion of hydrogen releases energy because the mass of a helium nucleus is smaller than the mass of four protons.Question 20: Fusion in the core of a stable massive star cannot proceed beyond iron because it would require temperatures that even stars cannot generate.

Question 19 addresses the reason why the fusion of hydrogen releases energy. The correct statement is that the mass of a helium nucleus is smaller than the mass of four protons. This mass difference results in the release of energy during fusion reactions. In fusion, hydrogen nuclei (protons) combine to form helium nuclei, and in the process, some mass is converted into energy according to Einstein's famous equation, E=mc^2. This energy is released in the form of photons, which can be observed as light and heat.

Question 20 explains why fusion in the core of a stable massive star cannot proceed beyond iron. The correct statement is that it would require temperatures that even stars cannot generate. Fusion reactions in stars involve the fusion of lighter elements to form heavier elements, releasing energy in the process.

However, fusion reactions that produce elements heavier than iron require extremely high temperatures and pressures, which are not achievable in the core of a stable massive star. Iron has the highest binding energy per nucleon, meaning that fusion of iron nuclei would require an input of energy rather than releasing energy. As a result, fusion reactions cease beyond the formation of iron in the core of a star.

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The original pressure of a gas that has 5.00 L of its sample expanded to 15.0 L, at which point the pressure is measured to be 0.720 atm is 2.16atm.

The pressure of a gas can be calculated using the Boyle's law equation as follows:

P1V1 = P2V2

Where;

P1 × 5 = 15 × 0.720

5P1 = 10.8

P1 = 10.8 ÷ 5

P1 = 2.16atm

Therefore, the original pressure of a gas that has 5.00 L of its sample expanded to 15.0 L, at which point the pressure is measured to be 0.720 atm is 2.16atm.

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I'm sorry I meant all organisms

Answer:

i think it is C but not 100% sure.

Explanation:

Answer:

D) The deer had a better food source so they had 2-3 fawns per year instead  of 1 fawn  per year.

The other options show that the populations actually decreased, due to cold temperatures and droughts.

Let me know if this helps!

Answer: C. q < 0

Explanation: sorry if I'm wrong

Answer:

Salt

Explanation:

It is because it has a defined composition.

Answer:

Salt

Explanation:

Pure substances are those that contain atoms or molecules of the same type. For eg: elements are pure (gold, hydrogen etcl.) and compounds (such as water, sodium chloride, etc.), etc.

Rest of choice are impure because they contain a mixture of different things, like pie has eggs, or all sorts of other molecules, salt water has water and salt molecules, and iced tea has water and other molecules associated with tea.

The only atom of the given that would have a formal charge of 0 is Option F: A nitrogen atom that forms four bonds and has no lone pairs.

This is because the formal charge of an atom is calculated by subtracting the number of valence electrons from the number of electrons in the outermost shell of the atom and then subtracting the number of lone pairs from the result. Since nitrogen has five valence electrons and it forms four bonds, it has a total of two electrons in its outermost shell. Since there are no lone pairs, the formal charge is 0. The formal charge of an atom is calculated by subtracting the number of valence electrons (usually assumed to be 8 for most atoms) from the number of electrons associated with the atom (the number of bonds formed plus the number of lone pairs).

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