Membrane fluidity depends on the presence or absence of cholesterol, in addition to the length of the carbon tails and the presence or absence of double bonds. Adjust each of these variables independently in the Fluidity Graphs and using the drop-down choices below, state how each factor affects membrane fluidity.

Longer carbon tails
Presence of double bonds
Addition of cholesterol

Answer:

An allele that is dominant is always shown to be a capital letter and a recessive allele is shown to be the lowercase version of that same letter. In a simple dominant/recessive relationship, any organism that receives a dominant allele will only visibly express that allele.

Explanation:

Hope this helps :D

Answer:

Explanation:

Here, we want to get what will happen when an Atthenius base interacts with water

By definition, an Arrhenius base increases the concentration of hydroxide ions in aqueous solutions

What this simply mean is that when an Arrhenius base comes in contact with water, the solution is expected to have an increase in the concentration of hydroxide ion. This can be measures pH wise and we expect an increase in the pH of the solution from 7

Answer:

1. An interstitial compound or alloy is a compound that is formed when small atoms like hydrogen, boron, carbon or nitrogen are trapped in the interstitial holes in a metal lattice. 2. They are usually non-stoichiometric compounds. 3. Transition metals form a number of interstitial compounds such as TiC, ZrH1.92 , Mn4N etc. 4. The elements that occupy the metal lattice provide them new properties. They are hard and show electrical and thermal conductivity They have high melting points higher than those of pure metals Transition metal hydrides are used as powerful reducing agents Metallic carbides are chemically inert

Interstitial compounds are formed when small atoms such as H, C or N are trapped inside the crystal lattices of metals. They are usually nonstoichiometric and are neither typically ionic nor covalent

Therefore, we need 6.0 × 1022 atoms of carbon to reach 12 g on the lab balance.

Carbon is an element found in nature that is essential for life on Earth. It is an abundant, non-metallic, and highly versatile element that is used in a variety of ways in many different fields. Carbon is found in all living organisms and is the basis of all life on Earth. It is also found in rocks, soil, and the atmosphere. Carbon is the fourth most abundant element in the universe and is the basis for organic compounds that form the basis of all living things. In industry, carbon is used to produce steel, glass, plastics, and many other materials. Carbon is also used in the manufacture of fuels and is a component of the chemical processes necessary for life. Carbon is also used in batteries, semiconductors, and solar cells.

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The label that belongs in the region marked X is "Moves molecules" because both active transport and passive transport involve the movement of molecules across a cell membrane.

Active transport and passive transport are two different mechanisms by which molecules move across a cell membrane. The key differences between active and passive transport are:

Energy requirement: Active transport requires energy, usually in the form of ATP, to move molecules across the cell membrane. In contrast, passive transport does not require energy and moves molecules down their concentration gradient.

Concentration gradient: Active transport moves molecules against their concentration gradient, from an area of low concentration to an area of high concentration, while passive transport moves molecules down their concentration gradient, or the change in concentration from one place with high concentration to another.

Specificity: Active transport often involves carrier proteins or pumps that are specific to certain molecules or ions, whereas passive transport usually involves channels or transporters that are less specific.

Rate of transport: Active transport can move molecules at a faster rate than passive transport, which is limited by the diffusion rate across the membrane.

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The diagram for question is attached below:

The grams of iburofen does such a tablet contain 800 mg =   0.8g Ibuprofen

1 g = 10^-3g = .001g

Ibuprofen has  800 mg doses in over-the-counter analgesic

800g = 800 × .001

        = 0.8g

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Answer:

6733.5 g of NaCl

Explanation:

We can assume that the salt solution is a saline solution which contains NaCl in water at 0.90%, whose density is 1.005 g/ml.

So we need to apply the density concept to solve the question.

Density = mass / volume

We convert dL to mL → 67 dL . 100mL / 1 dL = 6700 mL

Density = mass / volume

Volume . Density = mass

6700 mL . 1.005 g = 6733.5 g of NaCl

1.98 moles of ethene gas is contained in a 19.8 L tank that has a pressure of 2.52 atm at a temperature of 306 K.

The ideal gas law states that the pressure, temperature and volume of a gas are associate to each other. It is also called as real gas law.

Given:

Volume =  19.8 L

Pressure =  2.52 atm

Temperature = 306 K

Number og moles of ethene gas = ?

R = gas constant =  0.0821

According to ideal gas law,

PV = nRT

n = PV/RT

By substituting given values in above equation and we get

n =  2.52 × 19.8 / 0.0821 × 306

n = 1.98 moles

Thus, 1.98 moles of ethene gas is contained in a 19.8 Litre.

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The amount of heat energy absorbed when 200 grams of water are heated from 20 C to 60 C is 33,440 Joules.

To find the amount of heat energy absorbed when 200 grams of water are heated from 20 C to 60 C, we can use the equation Q = mcAT.
First, we need to find the value of m, which is the mass of the water in grams. In this case, it is given as 200 grams.
Next, we need to find the value of AT, which is the change in temperature in degrees Celsius.

This can be calculated by subtracting the initial temperature from the final temperature, which gives us 60 C - 20 C = 40 C.
The specific heat capacity of water, C, is given as 4.18 Joules per gram per degree Celsius.
Now we can plug in the values into the equation:
Q = mcAT
Q = (200 g) x (4.18 J/g°C) x (40°C)
Q = 33,440 J
Therefore, the amount of heat energy absorbed when 200 grams of water are heated from 20 C to 60 C is 33,440 Joules.

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Answer:

Static Friction

Explanation:

Answer:

The answer is Static Friction

Explanation:

Answer:

In a covalent bond, two atoms are held together by the attraction between each atom and the shared electronsthe nuclei of the two atomsthe valence electrons of the two atoms. The number of covalent bonds that an atom can form depends on the number of energy levelsprotons and neutronsvalence electrons in the atom.

Explanation:

Answer: No, two atoms belonging to the same chemical element are not necessarily identical.

Explanation:

I hope that was helpful

Considering the definition of period, group and electronic configuration:

The elements are arranged in horizontal rows, called periods, and in columns, called groups.

The Electronic Configuration of the elements is the arrangement of all electrons of an element in energy levels and sub-levels (orbitals).

There are 7 energy levels, numbered from 1 to 7, and in which electrons are distributed, logically in order according to their energy level.

Each level is divided into sub-levels. These sub-levels into which each level is divided can be up to 4. These 4 sub-levels are called: s, p, d, f.

The placement of the elements in the periodic table is done taking into account the electronic configuration.

In each period, the elements whose last level of their electronic configuration coincides with the number of the period appear.

On the other hand, in each group appear the elements that present the same number of electrons in the last occupied level or valence shell.

In summary:

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Answer:

A food chain shows how energy flows from one organism to another. In general, energy flows from the Sun to producers and then to consumers. The path is linear as the energy present in one step is transferred to the next. You can find specific examples of this pathway in an ecosystem

Answer:

Electrochemical cells convert chemical energy into electrical energy or vice versa. Electrolytic cell is a type of electrochemical cell in which electrical energy is converted into chemical energy. ... Electrolytic cells consist of positively charged anode and a negatively charged cathode.

I hope it's help

Answer:

There are three major hazards that may be introduced into the food supply any time during harvesting, processing, transporting, preparing, storing and serving food. These hazards may be microbiological, chemical or physical.

Explanation:

microbiological hazards

Microbiological hazard occurs when food becomes contaminated by microorganisms found in the air, food, water, soil, animals and the human body. Many microorganisms are helpful and necessary for life itself. However, given the right conditions, some microorganisms may cause a foodborne illness. Microorganisms commonly associated with foodborne illnesses include bacteria, viruses and parasites.chemical hazardsChemical hazards can occur at any point during harvesting, storage, preparation and service. When toxic chemicals used for pest control or for cleaning and sanitizing food contact surfaces and food preparation equipment come into contact with food, the food may be contaminated by those chemicals.Toxic metals such as copper, brass, cadmium, lead and zinc can be a source of chemical contamination. Zinc, used in galvanized containers (garbage cans) and in gray enamelware containers which may be plated with anatomy or cadmium, can make acidic foods such as orange juice or tomato sauce and pickles poisonous. Pottery dishes with lead glazes should not be used to prepare or serve food.Intentionally added chemicals help to maintain a food’s freshness or to enhance flavors in foods. Check the food ingredient label for more information about the additives. Excessive use of some additives has been linked (see Fact Sheets on Food Allergies and Food Additives) to cases of lethal allergic reactionsparticularly among sensitive individuals, in particular, asthmatics.Foodservice establishments are prohibited by law from using sulfites to maintain product freshness. However, they are still approved for use in some food processing operations, for example, processing shrimp and manufacturing wine. If they are used, the product must be clearly labeled.physical hazardsPhysical hazards usually result from accidental contamination and /or poor food handling practices. Examples include, slivers of glass, human hair, nails, false nails, nail polish, pieces of jewelry, metal fragments from worn or chipped utensils and containers, dirt, stones, frilled toothpicks.Pesticides may leave residues on fruits and vegetables. In general, these residues can be removed by scrubbing the surface and washing with water.Food irradiation is classified as a food additive and is regulated by the Food and Drug Administration (FDA). Irradiation is a process which destroys pathogenic and spoilage microorganisms without compromising safety, nutrition or quality and significantly lengthens storage life. In general, spices are irradiated as a means of controlling bacterial growth and mold. According to Dr. Donald Thayer of the USDA Agricultural Research Service, irradiation looks promising as a treatment for controlling cylospora in fresh produce like raspberries . Contact your local Cooperative Extension office for the latest information on irradiation.

True;

The earth is currently in an interglacial period

Climate has changed naturally over the earth's history

False

The increase since 1860 is similar to previous increases

Atmospheric composition have remained the same throughout earth history.

Atmospheric carbon dioxide has increased significantly since 1860, primarily due to human activities such as burning of fossil fuels and deforestation.

There are also seasonal variations in CO2 concentrations, with higher concentrations in the winter months and lower concentrations in the summer months. This is because the majority of the world's vegetation is in the Northern Hemisphere, and during the winter months, there is less photosynthesis occurring to remove CO2 from the atmosphere.

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reactants and products that are the same state of matter

Answer:

do u like fishing

Explanation:

because i do

Answer:

23.2 C

Explanation:

By looking at the dimension of specific heat ( J/g-C) , you can compute these type of questions:

 149.4 J  / ( .129 J / g-C   * 50 g) = 23.2 C  

           (see how dimensions g and J cancel out and you are left with C ? )

Answer:

LiOH (aq) + VCl3(aq) ---> LiCl(aq) + V(OH)3(s) - unbalanced

3LiOH (aq) + VCl3(aq) ---> 3LiCl(aq) + V(OH)3(s) - balanced

3Li+OH- (aq) + V3+(Cl-)3(aq) ---> 3Li+Cl-(aq) + V3+(OH-)3(s) - showing ions

3Li+(aq) + 3OH- (aq) + V3+(aq) + 3Cl-(aq) ---> 3Li+(aq) + 3Cl-(aq) + V3+(OH-)3(s) (some courses don't show the charges in insoluble ionic compounds - so V(OH)3(s)) - Showing soluble ionic compounds as separate ions.

3OH- (aq) + V3+(aq) ---> V3+(OH-)3(s) (or V(OH)3(s)) - without spectator ions

Explanation:

i don't know if this is right ore not but i hope this helps even if it is just a little bit sorry if this does not help i truly apologize

Answer:

What is the complete ionic equation? (answer:a molecular equation that separates the molecules into their ion forms. )

What is the net ionic equation? (answer: he net ionic equation is the chemical equation that shows only those elements, compounds, and ions that are directly involved in the chemical reaction. )

What are the spectator ion? ( answer: Ions that are not changed in the reaction)

Explanation:

Answer:

can you get a picture that is in higher quality? we can't read what it's saying

mass h

Explanation:

molar mass is equal to number of mass over moles we take 14.19 over17 molar mass of ammammonium equals 0.8347 incase of moles. 1H=1Nh3 ,so. n.H=0.8347 Mr=2 ,M.H=? Mr=m/n. 0.8347x2=1.669grams

Answer:

Heterogenous

Explanation: Because its not one uniform thing.

The term that best describes Max's bowl of cereal is a heterogeneous mixture.

A heterogeneous mixture is a chemical term that refers to those mixtures in which its components can be distinguished with the naked eye.

One of the distinctive characteristics of heterogeneous mixtures is that the substances that compose them retain their properties and can be separated by physical procedures such as:

According to the above, Max's bowl is an example of a heterogeneous mixture because milk and cereals can be distinguished with the naked eye and these can be separated using a physical procedure.

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Answer: 3 & 4

Explanation:

Answer:

Human chorionic gonadotropin (HCG) injections are much safer to use with some mild side effects to treat issues of testicular atrophy. Human chorionic gonadotropin (HCG) injections would increase blood flow and enable the testes' produce testosterone, reduce the shrinkage of the testicles and it also aids in the production of sperm cells which has been initially impaired due to testicular atrophy.

Explanation:

Anabolic steroid is a drug that plays the role of testosterone.

Testicular atrophy is the shrinkage of the testicles caused by old age or infections. Once it occurs, it lowers the production of testosterone and sperm cells.

Trenbolone increases muscle building, aids lean fat deposition, reduces the production of testosterone, and could also lead to testicular atrophy.

Answer:

The empirical formula would be Fe2o3

Explanation:

you first take the grams or the percent of each element, then transform them from grams to moles.

After getting the number of mols you want to divide each mol by the lowest number of mol.

EX) for this problem the number of moles of Fe(iron) would be 1.253 mol and the moles for the oxygen would be 1.881 mol... so you take the lowest, 1.253, and divide both to get what's called a mol fraction.

1.253/ 1.253 =1Fe

1.881/ 1.253= 1.5

now we want a whole number since we're finding the formula of a compound... and since there is a 1.5 you would multiple that by 2 giving you 3 for oxygen and giving you 2 for iron.

then these whole numbers will give you the subscripts that's needed for your empirical formula :)

- Hope this helps!!!

The mass of the solid aluminum that forms are 192.73 grams

To determine the mass of solid aluminum that forms, we need to use stoichiometry and the balanced chemical equation for the reaction between magnesium and aluminum nitrate.

The balanced chemical equation is:

3 Mg + 2 Al(\(NO_{3}\))3 → 3 Mg(\(NO_{3}\))2 + 2 Al

The equation shows that 3 moles of magnesium react with 2 moles of aluminum to produce 2 moles of aluminum nitrate.

To calculate the mass of solid aluminum, we need to know the amount of magnesium used. Given that the volume of the magnesium is 150.0 mL and its density is 1.738 g/cm³, we can calculate the mass of magnesium using the formula:

Mass = Volume × Density

Mass of magnesium = 150.0 mL × 1.738 g/cm³ = 260.7 g

Now, using the molar mass of magnesium (24.31 g/mol) and the molar ratio from the balanced equation, we can determine the moles of magnesium used:

Moles of magnesium = Mass of magnesium / Molar mass of magnesium

= 260.7 g / 24.31 g/mol

= 10.72 mol

According to the stoichiometry of the balanced equation, the ratio of moles of magnesium to moles of aluminum is 3:2. Therefore, the moles of aluminum formed will be:

Moles of aluminum = (2/3) × Moles of magnesium

= (2/3) × 10.72 mol

= 7.15 mol

Finally, we can calculate the mass of solid aluminum using its molar mass (26.98 g/mol):

Mass of aluminum = Moles of aluminum × Molar mass of aluminum

= 7.15 mol × 26.98 g/mol

= 192.73 g

Therefore, the mass of the solid aluminum that forms is approximately 192.73 grams.

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Answer:

2 -> O and Fe

Explanation: