Answers
Answer:
D
Explanation:
because if a flea is on a dog that is a parisite to host relashionship
Answer:
for number 3 is D
Explanation:
but i am not 100% sure of that
Related Questions
Devise a two‑step synthesis of the alkene from the ketone using the reagents provided
Answers
We can convert ketones to alkenes by the use of;
1)B2H6 in THF
2) H2O2/NaOH
What is a ketone?A ketone is a compound of the sort RCO. The compound contains a carbon - oxygen double bond. The ketone can be used in the synthesis of an alkene. The question is incomplete hence I can only give a general answer.
The reaction involves the following reagents;
1)B2H6 in THF
2) H2O2/NaOH
When these two reagents are applied any ketone can be converted to an alkene.
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The two-step synthesis of the alkene from the ketone using the reagents provided is
Step1: B₂H₆ in THF.
Step2: H₂O₂ / NaOH
What is alkene?An alkene is a hydrocarbon compound containing double bonds between carbons.
The process of making alkenes from ketones or aldehyde is called the witting reaction or witting olefination.
Thus, the two-step synthesis of the alkene from the ketone using the reagents provided is
Step1: B₂H₆ in THF.
Step2: H₂O₂ / NaOH
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what do you get when you mix H2O And Co3987b2
Answers
Answer:Potassium metal reacts very rapidly with water to form a colourless solution of potassium hydroxide (KOH) and hydrogen gas (H2). The resulting solution is basic because of the dissolved hydroxide. The reaction is exothermic.
Explanation:
Help ASAP!!! I need it now i have to write similar test tmrw
Answers
B is the temperature either released or absorbed.
The diagram shows that the reaction is exothermic based on the fact that the products energy is lower than the reactants. That is because energy (which is temperature in this case) is released during the process. If the reactants would have been lower than the products, the reaction would be endothermic.
Answer and explanation:
(c)
A represents the activation energy (the minimum amount of energy needed to start a reaction).
B represents the overall change in energy (the difference between the energy of the reactants and products).
(d)
The reaction profile diagram shows that the reaction is exothermic because the energy change is negative (the products have less energy than the reactants) which shows that energy is lost or given out to the surroundings.
(e)
HCl gas doesn't conduct electricity, but hydrochloric acid does because in HCl, there are hydrogen ions that are free to move so they can carry a charge.
Hope this helps!
Can somebody please help write a short paragraph about this including all the words listed in the question. Thanks!
WILL MARK BRAINLIEST WHOEVER CAN ANSWER FIRST!!! :DDDD
Answers
Answer:
Vaccines work by stimulating your immune system to produce antibodies, exactly like it would if you were exposed to the disease. After getting vaccinated, you develop immunity to that disease, without having to get the disease first.
Which statement best describes the law of conservation of mass? (1 point)
O Chemical symbols are used to show atom balance before and after a reaction.
O Matter cannot be created or destroyed in a chemical reaction.
O Reactants and products cannot escape from a closed system
• Reactants in a chemical reaction rearrange to form a new substance or substances.
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Matter cannot be created or destroyed in a chemical reaction best describe law of conservation of mass.
What is law of conservation of mass?The law of conservation of mass states that for any system closed Mass can neither be created not destroy. the mass of the system must remain constant over time,.
Therefore, Matter cannot be created or destroyed in a chemical reaction best describe law of conservation of mass.
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What is the ph of the solution formed by mixing 25. 0 ml of a 0. 15 m solution of nh3 with 25. 0 ml of 0. 12 m hcl? (kb for nh3 = 1. 8 10–5 )
Answers
Answer:
Explanation:
the answer is 8.66
Mark me brainliest please.
The pH of the solution formed by mixing 25. 0 ml of a 0. 15 m solution of NH₃ with 25. 0 ml of 0. 12 m HCl is 8.66.
What is pH?pH is potential hydrogen. It is the measurement of the acidity and basicity of any solution.
The solution of NH₃ is 25. 0 ml of a 0. 15 m
The solution of HCl is 25. 0 ml of 0. 12 m hcl
The pkb value is [tex]1.8 \times 10^-^5[/tex]
Putting the value in the formula
[tex]pOH=pKb +log[NH_3][HCl]\\\\ pOH = 1.8 \times 10^-^5+ log \dfrac{25.0 \times 0.15}{ 25.0 \times 0.12} \\\\ pOH = 1.8\times10^-^5+ log1.25 \\\\pOH = 1.8\times 10^-^5 + 1.25 = 3.05\\\\ pH = 14 - pOH = 14 - 1.25 = 8.66[/tex]
Thus, the pH of the solution formed by mixing 25. 0 ml of a 0. 15 m solution of NH₃ with 25. 0 ml of 0. 12 m HCl is 8.66.
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What’s an example of a single displacement reaction in everyday life
Answers
Answer:
Any time a simple metal reacts with an acid it is a single displacement reaction.
Explanation:
A simple everyday example is acid indigestion. We can relieve the distress when the stomach produces too much
HCl by drinking a solution of sodium hydrogen carbonate. The H in the HCI
displaces the Na in NaHCO/3 to produce
H/2CO/3.
Calcite (the main mineral in limestone) is made of calcium carbonate (caco3). dolomite, a related mineral, is made of magnesium carbonate (mgco3). what happens if a geologist drips a small amount of vinegar (acetic acid) onto a sample of dolomite? there is no way to predict what will happen. fizzing will occur because carbon dioxide is produced. no reaction will occur because dolomite contains no calcium.
Answers
If a geologist drips a small amount of vinegar (acetic acid) onto a sample of dolomite, fizzing will occur because carbon dioxide is produced.
Why Carbon dioxide show effervescence?Effervescence observes whenever any gas tried to escape out from an aqueous solution, that's why CO₂ show effervescence.
Reaction between dolomite and acetic acid will be represented as:
MgCO₃ + 2CH₃COOH → CO₂ + H₂O + Mg(CH₃COO)₂
From the above reaction it is clear that carbon dixide gas is produced by showing the effervescence and fizzing behavior.
Hence, option (2) is correct.
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Answer:
B
Explanation:
on edge2022
Are all molecules of ideal gas in motion with different velocities?
Answers
Explanation:
Individual gas molecules have different speeds. Collisions between these molecules can change individual molecular speeds, but this does not affect the overall average speed of the system.
Write balanced chemical equations for dissociation of the following weak acids and identify their conjugate bases: phosphoric acid (H3PO4), formic acid (HCO2H), and boric acid (H3BO3).
Answers
The conjugate base of an acid is the negative ion that it forms in solution. The conjugate base of each of the following acids are indicated below;
1) H3PO4(aq) ⇄ H^+(aq) + H2PO4^-(aq)(conjugate base)
2) HCO2H(aq) ⇄ H^+(aq) + HCO2^-(aq) (conjugate base)
3) H3BO3(aq) ⇄ H^+(aq) + H2BO3^- (aq) (conjugate base)
What is a conjugate base?When an acid is dissolved in water it is dissociated into ions. The conugate base of the acid is the negative ion that it forms in solution. Let us now see the conjugate base of each of the ions formed;
1) H3PO4(aq) ⇄ H^+(aq) + H2PO4^-(aq)(conjugate base)
2) HCO2H(aq) ⇄ H^+(aq) + HCO2^-(aq) (conjugate base)
3) H3BO3(aq) ⇄ H^+(aq) + H2BO3^- (aq) (conjugate base)
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Consider the reaction 2NaN3 → 2Na + 3N2, which is the first reaction that occurs when an air bag expands in a car undergoing a collision. This reaction happens very quickly, as you might suspect.
A graph showing the amount of nitrogen gas (N2) could be best described as which sentence?
A.) The graph line’s general trend is decreasing from left to right.
B.) The graph line’s general trend is absolutely horizontal.
C.) The graph line’s general trend is nearly horizontal.
D.) The graph line’s general trend is increasing from left to right.
Answers
Answer:
D) The Graph line’s general trend is increasing from left to right.
Explanation:
N2, a product, will increase over time which means the line of the graph would go up over time. Time increases from left to right so the correct answer is D.
The graph that describes the reaction will have a trend in which the graph is decreasing from left to right.
What is a collision?A collision occurs when two particle bump into each other. We know that a reaction takes place when there is an effective collision between the reacting particles.
In this case, the graph that describes the reaction will have a trend in which the graph is decreasing from left to right.
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A student adds 0. 0030 mol of hcl to 100 ml of a 0. 10 m solution of a r2nh, a weak base. The ph of the solution is found to be 11. 10
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Since an acidic salt solution is produced when a strong acid neutralizes a weak base, the pH of the salt solution formed when HCl is added to R2NH will be less than 7.
What is a neutralization reaction?A neutralization reaction is the react ion between an acid and a base to form salt and water only.
Neutralization reactions can either produce a neutral solution, an acidic solution or an alkaline solution at equivalence point.
When a strong acid is added to a weak base, the pH of the salt solution formed will be less than 7.
Therefore, the pH of the salt solution formed when HCl is added to R2NH will be less than 7.
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What is the difference between an endothermic and an exothermic reaction?
Answers
Definition of Tissue:
Answers
Answer:
any of the distinct types of material of which animals or plants are made, consisting of specialized cells and their products
Explanation:
Does this help you?
how many inches are there in 62.8 cm?
Answers
Answer:
24.7
Explanation:
Answer: ~24.72in
Explanation:
1 inch = 2.54 centimeters
divide 62.8cm by 2.54 which gives us approximately 24.72in.
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According to Robert Boyle, which of the following is not an acid’s property?
a) turns blue Litmus red
b) sour in taste
c) neutralize bases
d) bitter in taste
Answers
Answer:
Bitter in taste
Explanation:
Acids according to Robert Boyle taste sour not bitter.
They are corrosiveThey can act as neutralize basesAccording to Robert Boyle, the option which is not an acid’s property include the following: d) bitter in taste.
What is an acidic solution?In Chemistry, an acidic solution can be defined as a type of aqueous solution that has a high concentration of hydrogen ions (H⁺), which is typically greater than that of pure water.
According to Robert Boyle, the properties of acids include the following:
They turn a blue Litmus paper red.
They are corrosive
They can act as neutralize bases.
They are sour in taste
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Lithium seems to have dramatic effects on the nervous system, yet our bodies seemingly never evolved to use lithium endogenously, rather focusing on sodium, potassium, and calcium. what is a plausible explanation for this?
Answers
Given its small size and high polarizing power, lithium is only involved in covalent rather than ionic bonds in the body as does sodium, potassium, and calcium.
What is lithium?Lithium is a metal and a member of group 1 in the periodic table. It is a very small ion hence it has a different chemistry from the rest of the members of the group.
Lithium is not part of any of the biomolecules because given its small size and high polarizing power, it is only involved in covalent rather than ionic bonds in the body as does sodium, potassium, and calcium.
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Which of the following compounds would be expected to have the strongest ionic bonds?
the compound that has the largest ions with the greatest charge
the compound that has the largest ions with the least charge
the compound that has the smallest ions with the greatest charge
the compound that has the smallest ions with the least charge
Answers
Answer:
the compound that has the smallest ions with the greatest charge
The compound that has the smallest ions with the greatest charge will have the strongest ionic bonds. Therefore, option C is correct.
What are ionic compounds?Ionic compounds can be defined as solids formed by closely packed ions of opposite charge. An Ionic compound is commonly formed when metal combines with non-metal.
In ionic compounds, the ions are held together by ionic bonds. The ions are created by accepting or losing electrons in order to get their nearest noble gas configuration. In a reaction, the metals have a tendency to lose electrons to complete their octet while non-metals will gain electrons to fill their octet.
An ionic bond or electrovalent bond is a type of linkage generated from the electrostatic attraction between oppositely charged ions. Such a bond produces when the valence electrons of one atom are transferred permanently to another.
The more the charge on the ions and the smaller the ions stronger the ionic bond will be formed.
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How can solar flares affect the oceans?
Answers
Explanation:
it can damage satellites cuase there in space and are not protected by earth
A student finds that the mass of 25mL of an unknown liquid is 20.3g. What is the density of this substance?
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Answer:
Explanation:
as we know density is g/ml or d=(g/ml) we will plug in the values in their respective positions and get the answer.
So the density is 0.812(round it according to the sig figs it asks for).
The sum of the kinetic energies and potential energies of all of the molecules
in a substance is called the ___ energy of the substance.
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Answer:
The sum of the kinetic energies and potential energies of all of the molecules in a substance is called the thermal energy of the substance.
A sample of nitrogen occupies 10.0 liters at 25oC , what would be the new volume at 20oC?
Answers
Apply Charles law
[tex]\\ \bf\bull\rightarrowtail V1T2=V_2T1[/tex]
[tex]\\ \bf\bull\rightarrowtail 10(20)=25V_2[/tex]
[tex]\\ \bf\bull\rightarrowtail 200=25V_2[/tex]
[tex]\\ \bf\bull\rightarrowtail V_2=8L[/tex]
Answer:
hope it's helpful to you
hello, I need help with this question
Answers
Answer:
carnivores organism get their energy from eating other organisms..
650.0 mL of a gas is under a pressure of 840.0 torr. What would the volume of
the gas be at a pressure of 1150.0 torr?
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Answer:
Explanation:using the ideal gas formula, calculate the volume of 1.5omoles of a gas at 115kPA and a temperature of 298k?
Can someone please predict the products for these two? Also explain to me how you predicted it, thank you.
1) C₂H₂ + O₂ -->
2) C₂H₁₂ + O₂ -->
Answers
1) C2H2 + 3O2 ➡️ 2CO2 + 2H2O
2) C2H12 + 5O2 ➡️ 2CO2 + 6H2O
ILL BRAINLIST ITS URGENTTT!!!!
Investigate the rate of success that CCS projects have shown and predict it’s viability as a method of reducing carbon emissions to achieve our target of zero emissions by 2050.
Answers
Answer:
With the European Climate Law, the EU committing to carbon neutrality by 2050. What does that mean in practice?
Climate change is already affecting the entire world, with extreme weather conditions such as drought, heat waves, heavy rain, floods and landslides becoming more frequent, including in Europe. Other consequences of the rapidly changing climate include rising sea levels, ocean acidification and loss of biodiversity.
In order to limit global warming to 1.5 degrees Celsius – a threshold the Intergovernmental Panel for Climate Change (IPCC) suggests is safe – carbon neutrality by mid-21st century is essential. This target is also laid down in the Paris agreement signed by 195 countries, including the EU.
In December 2019, the European Commission presented the European Green Deal, its flagship plan that aims to make Europe climate neutral by 2050. This target will be reached through the European Climate Law that sets climate neutrality into binding EU legislation.
Explanation:
ok bet i got u
Which two elements will be the most alike and why?
Which two elements will be the most alike and why?
Lithium (Li) and Sodium (Na) because they are both metals and are in the same group
Oxygen (O) and Neon (Ne) because they are both noble gases
Helium (He) and Hydrogen (H) because they are both non-metals and are in the same row.
Answers
Explanation:
The first statement is correct
Li &Na
The antibiotic prontosil, developed by bayer pharmaceuticals in 1932, was used in saving the life of president roosevelt's son from severe strep throat in 1936. protonsil consists of two nitrogens bonded together in a double bond. the left nitrogen is bonded to a benzene ring where the para position contains a sulfur double bonded to two oxygen atoms and single bonded to n h 2. the right nitrogen is bonded to a benzene ring where one ortho and the para position each have an n h 2 substituent. substituent prontosil is an azo dye, which can be prepared from an aryldiazonium ion and an aromatic compound. draw the structures of the diazonium ion and the coupling component for this drug
Answers
Prontosil is a compound produced by the coupled reaction of an aryldiazonium ion and an aromatic compound.
What are diazonium compounds?
These are organic compounds in which there are ionic interactions between the azo group (-N₂⁺) and an anion X⁻.
The general structure is RN₂⁺X⁻.
R is the lateral chain that might be an aromatic ring, among other options.N₂⁺ is the azo groupX⁻ is the anionThe azo group characterizes as being unstable and reactive. This property is because one of the N atoms has a positive charge.
-N⁺≡ N
What is the coupling reaction of aryldiazonium compounds?Aryldiazonium salt reactions can occur in two ways,
Substitution reactionsCoupling reactionsCoupling reactions are the aromatic electrophilic substitution, where the aryldiazonium ion acts as an electrophile for an activated aromatic compound to attack it.
The coupling reaction occurs at the azo group level.
In the exposed example,
the benzene ring with sulfur bonded to oxygen atoms is the coupling componentthe benzene ring with NH₂ and the azo group is the diazonium ionIn the attached files you will find the drawings.
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Draw the structure of the major organic product(s) of the reaction. Grinard's
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Answer:
There is drawing of the major organic product of reaction
Which images show chemical reactions?
Answers
Explanation:
image 3 and 4show chemical reactionsAnswer:
image 3 and 4show chemical reactions
Explanation: