Answer:
These have the ability to digest intracellular macromolecules such as proteins, lipids and sugars. The functioning of the Golgi apparatus and ER are both so closely linked to the lysosomes that together, these entities compose the endomembrane system.
Explanation:
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Why is 1-methylhexane not a legitimate name for a compound?
Answer:
It is not a legitimate chemical name because the methyl group on carbon 1 increases the length of the carbon chain to seven carbon atoms thus making the parent compound heptane
Explanation:
Chemical compounds are named according to rules in the IUPAC nomenclature.
In naming organic compounds, parts of rules is to find out the parent or root compound. This is determined by finding out the longest carbon chain and then checking if it contains single or multiple bonds. (that is if it is an alkane- with single bonds, alkene-with double bonds or an alkyne- with triple bonds)
From the question the parent or root name is an alkane containing 6 (Hex-) carbon atoms, while the methyl group is substituent
(CH₃)-CH₂-CH₂-CH₂-CH₂-CH-CH₃
However the alkyl substituent on carbon 1 increases the the length of the carbon chain to 7 (Hept-) instead of 6. Hence the correct IUPAC nomenclature is heptane and not 1-methylhexane.
orbital cellulitis 5462 children included for study, 1347 (24%) were prescribed corticosteroids within 2 days of admission
It's unable to identify a decrease in LOS linked to corticosteroid exposure during hospitalization for ocular cellulitis in this database search. After two days of hospitalization, operational episodes and the prescription of corticosteroids were related to admission to the PICU.
Within two days of admission, 1347 (24%) of the 5462 children who were included in the research received a corticosteroid prescription. In analyses that controlled for age, the existence of meningitis, abscess, or visual problems, as well as the surgical episode and PICU admission within 2 days, corticosteroid prescription was not linked with LOS (e = 1.01, 95% confidence interval [CI]: 0.97-1.06). Among patients with a primary diagnosis of orbital cellulitis, corticosteroid exposure was linked to surgical events after two days of hospitalization (odds ratio = 2.05, 95% CI: 1.29-3.27) and 30-day readmission (odds ratio = 2.40, 95% CI: 1.52-3.78). Prospective, randomized control trials are required prior to the widespread usage of corticosteroids.
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3.
Iron can be produced when iron (III) oxide reacts with carbon monoxide gas.
Fe2O3 (s) + 3C0 (g) → 2 Fe (s) + 3CO2(g)
11.5 g of Fe2O3 reacts with 2.63 x 10 24 molecules of CO. What mass of Fe is
expected? [10]
Answer: 23 g
the mol of Fe is 11,5/56 = 23/112 (mol)
the mol of CO is \(\frac{2,63.10^{24} }{6.10^{23} }= \frac{263}{60}\) (mol)
we have:
Fe2O3 + 3CO => 2Fe + 3CO2
23/112 69/112 23/56
=> the mol of Fe is 23/56 mol
=> the mass of Fe is 23/56.56 = 23 (g)
Explanation:
2. Fog remains suspended in the air because
they are supported by slight movement in the air
they contain air bubbles
they are charged with static electricity
they are lighter than air
Fog remains suspended in the air because they are supported by slight movement in the air
Why is fog hanging in the air?If the air near the ground cools down enough and is humid and light wind (stable), water vapour in the air may condense into minute water droplets. Near ground level, these raindrops make it harder to see. Fog is the term for the phenomenon.
Is water suspended in fog?Fog is defined as "air that is near to the surface and contains suspended water droplets, typically generated by diabatic cooling" in Understanding Weather and Climate.
How come the fog is so low to the ground?When the air close to the ground cools down sufficiently, the water vapor condenses into liquid water or ice, creating fog. Fog comes in a wide variety of forms. When the air close to the ground is chilly enough, ice fog develops.
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A salt in which the anion is the conjugate _____ of a weak _____ will produce a basic solution. (Assume that the cation does not hydrolyze.)
Answer: conjugate base of a weak acid
Explanation: If the anion is a conjugate base of a weak acid, the solution would be basic. This is because weak acids do not produce enough hydrogen ions in the solution so does not really affect the acidity, so the conjugate base can react with water in the solution to produce a basic solution.
Is Ni(NO3)3 ionic or covalent and why
The Ni ( NO₃ )₃ is an anhydrous covalent compound. Ni ( NO₃ )₃ is prepared by the reaction of red fuming nitric acid and nickel nitrate hemihydrate.
What is covalent compound ?An electron exchange that results in the formation of electron pairs between atoms is known as a covalent bond. Bonding pairs or sharing pairs are the names given to these electron pairs. Covalent bonding is the stable equilibrium of the attractive and repulsive forces between atoms when they share electrons.
At room temperature, covalent compounds can be found in all three of their physical states and often have low boiling and melting temperatures. Because covalent compounds lack charged particles with the ability to carry electrons, they do not conduct electricity.
Two atoms sharing a pair of electrons make a covalent connection. Because the electron pair is drawn to both nuclei, the atoms are kept together.
Thus, The Ni ( NO₃ )₃ is an anhydrous covalent compound.
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What living characteristics do viruses have?
In the article "A Sea of Garbage" what message is each cartoon trying to convey to readers? Do they succeed?
Answer:
yes in the article I see of garbage what's messages each carton trying to convey to your readers with a success obviously they do suck said they succeed because like that's really great day socks said is your garbage is like a pool of garbage work garbage are gathered together they are together a you get one talking about you know when cabbage and together they make efficient use of them okay I mean garbage garbage garbage garbage so I don't know I don't know I don't know I don't know I don't know but it's really is regret it regret it was someone couldn't wish for our young people pick them up and see if garbage and it's really not making sense cuz when you see a sea of garbage that means there's water in there and people pull up garbage in be like water pollution or something but I'm actually not really like sure but I have a slight idea of like what we talking about here right now and it's greatwhat are the main indications that a chemical reaction has occurred? check all that apply. what are the main indications that a chemical reaction has occurred?check all that apply. a color change emission of light change of the state of matter formation of a solid formation of a gas emission of (or absorption of) heat
A chemical reaction that has occurred can be identified by various things. Evolution of gas / formation of gas, Change in colour, Change in the state of matter, Emissions of light, Formation of precipitate / solid, Evolution of light.
Light may be absorbed and emission by atoms and molecules, which allows us to determine the number of energy levels an electron has as well as the distance between those levels. The photon energies that correspond to various colors of light vary. In essence, a photon is a bundle of light. A photon of red light would have less energy than a photon of blue light, for instance. Red and blue have different wavelengths, and since red has a longer wavelength than blue, it has a lower energy. Only in shells, which surround nuclei, do electrons actually exist. Shells are matched to specific energy levels.
The number of permitted energy levels in an atom depends on the arrangement of protons and electrons. The process of substances releasing various photons of color as their atoms return to their lower energy levels.
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Question 5 (4 points)
One type of dipole-dipole force found in water is
A. ion-ion attraction
B. hydrogen bonds
C. dipole-ion bonds
D. molecular bonds
Answer:
B. Hydrogen bonds.
Explanation:
The dipole dipole force that is found in water is hydrogen bonds.
Which of the following techniques would be the best choice for screening a person's genetics for 1,000 or more genes?
A. Microarray analysis
B. RELP analysis
C. Sequencing
D. Karyotyping
The best choice for screening a person's genetics for 1,000 or more genes would be: C. Sequencing.
Sequencing techniques, such as next-generation sequencing (NGS), are well-suited for screening a large number of genes efficiently and comprehensively. NGS allows for high-throughput sequencing of DNA, enabling the simultaneous analysis of multiple genes or even the entire genome. It provides detailed information about the sequence of nucleotides in the DNA, allowing for the identification of genetic variations, mutations, or other genomic features.
Microarray analysis (A) is a technique that can analyze gene expression patterns or detect specific genetic variations, but it is limited in the number of genes it can assess simultaneously compared to sequencing.
RELP analysis (B) is a technique used for detecting genetic variations based on restriction enzyme digestion patterns, but it is more suitable for specific target regions rather than screening a large number of genes.
Karyotyping (D) involves the visualization and analysis of chromosomes to detect large-scale chromosomal abnormalities but is not suitable for screening a large number of individual genes.
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What are bacteria? Chapter 7 lesson 2 AYU
Answer:
a group of unicellular microorganisms
Answer:
bacteria are a type of biological cell,they constitute a large domain of prokaryotic microorganisms,single celled. The cells are all prokaryotic . This means they do not have a nucleus or any other structures which are surrounded by membranes . ... Bacteria also have small, closed-circles of DNA called plasmids present in their cytoplasm
Explanation:
Give an example of a solution and identify the solute and solvent.
A common example of a solution is saltwater. In this solution, the solute is salt (NaCl) and the solvent is water (H2O).
When salt is added to water, it dissolves into the liquid to form a homogeneous mixture. The water molecules surround the ions of the salt and pull them apart from each other, resulting in the formation of individual salt ions dispersed throughout the water. The salt ions become evenly distributed throughout the water, resulting in a solution.
In this example, the salt (NaCl) is the solute because it is the substance that is being dissolved. The water (H2O) is the solvent because it is the substance that dissolves the salt and creates the solution.
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1. If a car was traveling at 300feet/second what would its speed be in
miles/hour? [1 mile = 5,280 feet]
Answer:
18 thousand
Explanation:
Calculated it
such as a cow, has offspring, what characteristic will the offspring most likely inherit?
A Body shape and behavoir
B Hair or fur and number of legs
C Number of legs and scales
D Skin color and body segments
which of the following statements is correct for the reaction: 2 h 2 cro4 -2 cr2o7 -2 h2o
The reaction described is the transformation of two molecules of hydrogen chromate (H2CrO4) into one molecule of dichromate (Cr2O7^2-) and two molecules of water (H2O).
The correct statement for this reaction is:
The reaction involves the oxidation of hydrogen chromate to form dichromate.
In the process, two hydrogen chromate ions lose two protons (H+) and undergo a reduction in oxidation state, resulting in the formation of one dichromate ion.
Simultaneously, two water molecules are produced. The reaction is balanced in terms of charge and mass, with two hydrogen chromate ions on the reactant side transforming into one dichromate ion and two water molecules on the product side.
This transformation is a redox reaction, involving changes in both oxidation states and the transfer of electrons. The reaction can occur in an acidic medium where the hydrogen chromate acts as an oxidizing agent.
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how to tell if a functional group is acidic or basic
Determining whether a functional group is acidic or basic depends on its ability to either donate or accept a proton (H+). Here are some general guidelines to help you assess the acidity or basicity of a functional group:
1. Acidity:
a. Look for functional groups that have an acidic hydrogen directly bonded to an electronegative atom, such as oxygen or a halogen. Examples include carboxylic acids (–COOH) and phenols (–OH on an aromatic ring).
b. Consider the stability of the resulting conjugate base. If the conjugate base is stabilized through resonance or delocalization of the negative charge, the functional group is more acidic. For example, the carboxylate ion (–COO-) is stabilized through resonance.
2. Basicity:
a. Look for functional groups that contain lone pairs of electrons, which can readily accept a proton. Common examples include amines (–NH2) and amides (–CONH2).
b. Consider the availability of lone pairs. The more accessible the lone pairs are, the more basic the functional group. For example, primary amines have more available lone pairs than tertiary amines and are, therefore, more basic.
It's important to note that the acidity or basicity of a functional group can also be influenced by its environment, neighboring groups, and other factors. These guidelines provide a general starting point, but there may be exceptions and variations based on specific compounds and circumstances.
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20.What is it called when particles in a solid or liquid move slower and closer
together?
Answer: freezing
Explanation:
when the atoms or molecules in a solid or liquid are moving slower and closer together, it is called brrrrrrrrr freezinf
a researcher employed at phenomenal phenols, inc. has been asked by her supervisor, o. h. gruppa, to identify a compound a that was isolated from natural sources. compound a, mp 129–130 ∘c, is soluble in naoh solution and in hot water. the ir spectrum of compound a shows prominent absorptions at 3300–3600 cm−1 (broad) and 1680 cm−1; the ei mass spectrum of compound a has prominent peaks at m/z
Here is a short answer to identify Compound A:
1. Solubility in NaOH solution and hot water suggests that Compound A contains polar functional groups, such as hydroxyl (-OH) or amino (-NH2) groups. These groups can form hydrogen bonds with water or undergo ionization in NaOH solution.
2. The broad absorption in the IR spectrum at 3300-3600 cm^-1 indicates the presence of an -OH group (alcohol or phenol) or -NH2 group (amine). This broad absorption is due to the stretching vibrations of the hydrogen-bonded O-H or N-H bonds.
3. The absorption at 1680 cm^-1 in the IR spectrum suggests the presence of a carbonyl (C=O) group. This absorption corresponds to the stretching vibration of the carbonyl bond in compounds such as aldehydes, ketones, or carboxylic acids.
4. The prominent peaks in the EI mass spectrum at m/z indicate the molecular ions and fragments produced during electron ionization. The mass-to-charge ratio (m/z) values can provide information about the molecular weight and fragmentation pattern of Compound A.
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How do the ideas of electrolytes and IV fluids relate?
Answer:
Electrolytes, particularly sodium, help the body maintain normal fluid levels in the fluid compartments because the amount of fluid a compartment contains depends on the amount (concentration) of electrolytes in it. If the electrolyte concentration is high, fluid moves into that compartment (a process called osmosis).
Explanation:
Answer:
Electrolytes are minerals in your body that have an electric charge. They are in your blood, urine, tissues, and other body fluids. Electrolytes are important because they help
Balance the amount of water in your body
Balance your body's acid/base (pH) level
Move nutrients into your cells
Move wastes out of your cells
Make sure that your nerves, muscles, the heart, and the brain work the way they should
Sodium, calcium, potassium, chloride, phosphate, and magnesium are all electrolytes. You get them from the foods you eat and the fluids you drink.
The levels of electrolytes in your body can become too low or too high. This can happen when the amount of water in your body changes. The amount of water that you take in should equal the amount you lose. If something upsets this balance, you may have too little water (dehydration) or too much water (overhydration). Some medicines, vomiting, diarrhea, sweating, and liver or kidney problems can all upset your water balance.
Treatment helps you to manage the imbalance. It also involves identifying and treating what caused the imbalance.
hope it's help you plz mark as brain listSodium reacts vigorously with water to form aqueous sodium hydroxide, NaOH, which is a
strong base.
The equation for the reaction is shown.
2Na(s) + 2H₂O(1)→ 2NaOH(aq) + H₂(g)
Calculate the concentration of NaOH(aq) formed, in g/dm³, when 0.345g of sodium is
added to 50.0 cm³ of distilled water. Assume there is no change in volume.
Use the following steps.
Calculate the number of moles of Na added.
Determine the number of moles of NaOH formed.
Calculate the concentration of NaOH in mol/dm³.
Determine the M, of NaOH and calculate the concentration of NaOH in g/dm³.
write the ionic equation for dissolution and the solubility product (ksp) expression for each of the following slightly soluble ionic compounds: (a) pbcl2 (b) ag2s (c) sr3(po4)2 (d) srso4
The ionic equation for dissolution and the solubility product (ksp) expression for each of the following slightly soluble ionic compounds.
(a) For PbCl2:
Dissolution: PbCl2 (s) → Pb²⁺ (aq) + 2Cl⁻ (aq)
Ionic equation: PbCl2 (s) ⇌ Pb²⁺ (aq) + 2Cl⁻ (aq)
Solubility product (Ksp) expression: Ksp = [Pb²⁺][Cl⁻]²
(b) For Ag2S:
Dissolution: Ag2S (s) → 2Ag⁺ (aq) + S²⁻ (aq)
Ionic equation: Ag2S (s) ⇌ 2Ag⁺ (aq) + S²⁻ (aq)
Solubility product (Ksp) expression: Ksp = [Ag⁺]²[S²⁻]
(c) For Sr3(PO4)2:
Dissolution: Sr3(PO4)2 (s) → 3Sr²⁺ (aq) + 2PO₄³⁻ (aq)
Ionic equation: Sr3(PO4)2 (s) ⇌ 3Sr²⁺ (aq) + 2PO₄³⁻ (aq)
Solubility product (Ksp) expression: Ksp = [Sr²⁺]³[PO₄³⁻]²
(d) For SrSO4:
Dissolution: SrSO4 (s) → Sr²⁺ (aq) + SO₄²⁻ (aq)
Ionic equation: SrSO4 (s) ⇌ Sr²⁺ (aq) + SO₄²⁻ (aq)
Solubility product (Ksp) expression: Ksp = [Sr²⁺][SO₄²⁻]
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Why shouldn't you flake off adsorbent?
Adsorbent materials, such as activated carbon or silica gel, are designed to attract and hold onto specific molecules or particles from a fluid or gas. If you flake off the adsorbent, you risk releasing those molecules or particles back into the surrounding environment, potentially causing contamination or harm.
Flaking off the adsorbent can disrupt its ability to effectively remove unwanted substances, reducing its overall efficiency and effectiveness. Therefore, it is important to handle adsorbent materials carefully and avoid flaking them off whenever possible.
1. Safety: Adsorbents are often used to remove contaminants, toxins, or other harmful substances from materials or environments. Flaking off adsorbent could release these contaminants, posing a risk to your health and the environment.
2. Effectiveness: Adsorbents work by providing a large surface area for the adsorption of targeted substances. Flaking off adsorbent may reduce its surface area, decreasing its overall effectiveness in capturing and holding contaminants.
3. Waste: Flaking off adsorbent may lead to unnecessary waste, as the adsorbent material will no longer be used to its full capacity. This could result in increased costs for additional adsorbent materials or disposal of partially used adsorbents.
In summary, you shouldn't flake off adsorbent to ensure safety, maintain its effectiveness, and minimize waste.
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You should not flake off adsorbent because doing so can negatively impact its efficiency and compromise the purpose it serves.
Adsorbents are materials designed to adhere or hold molecules of a substance on their surface, typically used in purification and separation processes. They have a high surface area and porous structure, which enables them to effectively adsorb and retain impurities. Flaking off adsorbent may result in the loss of these crucial properties. The process can cause damage to the porous structure, reducing the overall surface area available for adsorption. This, in turn, reduces the adsorbent's capacity to capture and retain impurities, ultimately affecting the purity of the end product.
Furthermore, flaking off adsorbent can lead to the generation of fine particles or dust, these particles may cause contamination in the process or system where the adsorbent is employed, impacting product quality and posing potential safety hazards. Lastly, the act of flaking off adsorbent may also increase the likelihood of human exposure to harmful substances that are adsorbed onto the material, this exposure can lead to health risks, especially when dealing with toxic or hazardous compounds. You should not flake off adsorbent because doing so can negatively impact its efficiency and compromise the purpose it serves.
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What happens when molecules absorb heat?
When molecules absorb heat, their kinetic energy increases, causing the molecules to move more rapidly.
This results in an unprecedented ascent in temperature, as the overall velocity of the molecules increases.
Moreover, the agitated bonds of the molecules can trigger an explosive reordering of the molecular structure, sparking potential chemical reactions.
Furthermore, the surge in thermal energy can induce a metamorphic phase transition, from solid to liquid, or from liquid to gas! It's an awe-inspiring demonstration of the power of heat and its impact on the properties of a substance.
The heat absorbed is contingent on numerous factors, such as its specific heat capacity, mass, and temperature change.
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A titration is completed using 10.0 mL of 0.50 M HCl and an unknown concentration of NaOH solution. If the equivalence point is reached when exactly 20.0 mL of the NaOH solution is added, what must the concentration of the NaOH solution be?
Answer:
0.172 M
Explanation:
It takes Mark two hours to ride his bike 12 miles
to his grandma’s house. What is Mark’s speed in
miles per hour?
Answer: 6 miles per hour
Explanation:
When you divide 12/2 to get your speed you will get 6.
Consider this reaction:
H2(g) + Cl2 (g) 2 HCl (g)
How many liters of HCl are produced when 11.2 L of chlorine are reacted with excess hydrogen?
(One mole of any gas occupies 22.4L under certain conditions of temperature and pressure. Assume those conditions for this
question.)
22.4L
56 L
112 L
224 L
What includes almost 80% of the elements
Answer:
Metals
Explanation:
If you look on the periodic table metals are the most abundant.
Why isn't the atomic mass of most of the elements on the Periodic Table an integer (not a decimal)?
Answer:
Atomic mass is never an integer number for several reasons
When someone jumps down on a trampoline, that person is propelled upwards. Choose the best statement describing how this
demonstrates Newton's third law. (1 point)
The style of the jumper's footwear affects the first action of compressing the jumping surface.
The trampoline pushes back with equal force but in the opposite direction.
The direction of the motion is changed by the surface area of the jumper that comes in contact with the trampoline.
The color of the trampoline's jumping surface can affect the reaction force.
Answer:
(b) The trampoline pushes back with equal force but in the opposite direction
Explanation:
Newton's third law states that when an object applies a force upon another object, the second object applies a force of equal magnitude but opposite direction upon the first object.
Answer:
(Question) When someone jumps down on a trampoline, that person is propelled upwards. Choose the best statement describing how this demonstrates Newton’s third law.
(Answer) The trampoline pushes back with equal force but in the opposite direction.
(Question) When inflating a balloon, which of the following represents an equal but opposite force acting on the balloon?
(Answer) the expansion of the balloon
(Question) A force of 30 N to the right is applied to an object. An opposite force of 20 N to the left is applied to the same object. What is the net force applied to the object?
(Answer) 10N to the right
(Question) Two objects with the same mass have the same force applied to them. What can be said of their acceleration?
(Answer) Their acceleration will be the same.
(Question) What do force diagrams show?
(Answer) the magnitude and direction of forces acting on an object
Explanation:
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