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Posted in Chemistry

Which fat is most likely a solid at room temperature? one that is saturated one that is unsaturated one with double bonds one that contains no hydrogen


Answer: Option (a) is the correct answer.

Explanation:

When a fat contains high proportion of fatty acid molecules which have no double bonds then it is known as a saturated fat.

For example, animal fats are mostly saturated.

Fats which are solid at room temperature are known as solid fats. Butter, beef fat etc are all solid at room temperature. Most of the animal food gives solid fats.

Thus, we can conclude that saturated fat is most likely a solid at room temperature.


Related Questions

Posted in Chemistry

Which statement best explains why a carbon atom can bond easily with other atoms? It is an ion. It is an organic element. It has four valence electrons. It forms hydrogen bonds.

Based on the definition of a carbon atom, the statement that best explains why a carbon atom can bond easily with other atoms because it  has four valence electrons. So the answer would be the third option. Hope this answers your question.

Posted in Chemistry

Which compound contains only nonpolar covalent bonds? O2 CO2 H2O NO3

I believe the correct answer from the choices listed above is the first option. O2 is the compound that contains only nonpolar covalent bonds. It is nonpolar since it does not have unequal distribution of charges. Hope this answers the question. Have a nice day.

Posted in Chemistry

Draw a complete Lewis structure for the conjugate acid of nitromethane that shows all bonds, unshared electron pairs, and minimized formal charges, where appropriate.

Answer:

Lewis structures are shown below

Explanation:

  • In Lewis structure of nitromethane, a negative charge is present on oxygen atom in nitro group.
  • Hence this oxygen atom acts as a basic center preferably.
  • Therefore conjugate acid of nitromethane should be drawn by adding a hydrogen atom with this oxygen atom.
  • Lewis structure of nitromethane as well as it's conjugate acid has been shown below including all the lone pairs and formal charges

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An unknown compound contains only carbon, hydrogen, and oxygen (CxHyOz). Combustion of 2.50g of this compound produced 3.67g of carbon dioxide and 1.50g of water. How many moles of carbon, C, were in the original sample?

The solution to the problem is as follows:

 a) 

C + O2 = CO2 

Molar mass CO2 = 44 g/mol 

3.67 g CO2 * 1 mol / 44 g = 

=0.0834 mol CO2 = 0.0834 mol C 

I hope my answer has come to your help. God bless and have a nice day ahead!

Posted in Chemistry

A teacher makes the following statement. “Gasoline boils at a relatively low temperature (about 150°C). The kerosene is removed at around 200°C, followed by diesel oil at 300°C and fuel oil at around 370°C.” What topic is the teacher most likely talking about? a. distillation of a mixture b. filtration of a pure substance c.evaporation of a mixture d. sorting of a pure substance

Answer:

The correct answer is option a.

Explanation:

According the question, boiling points of different liquids are discussed which means that if we take all these liquids in single mixture we can separate them from each other on the basis of their difference in boiling point. And the technique which employs this principle is distillation process.

Hence, we can say teacher is most likely talking about distillation of a mixture of oils.

Distillation is a process which is used to separate mixture of different liquids from each other. In this process, during the course of boiling of mixture liquid compound with lower boiling points vaporizes first leaving behind the liquid with higher boiling point behind.

And vapors of boiled liquid are condensed down in a separate container for the collection.

Posted in Chemistry

Which of these is a property of a substance that is composed of atoms that are held together by ionic bonds? It can be shaped into wires. It has a low melting point. It conducts electricity when in solid form. It conducts electricity when it is dissolved in water.

Answer: Option (D) is the correct answer.

Explanation:

A ionic compound will have opposite charges on the 2 atoms attached to each other.

When ionic compound is in solid state then atoms will be more closer to each other and also due to the opposite charges the molecules will have strong force of attraction between them.

In order to conduct electricity, free movement of ions is required. So, a solid with ionic bonds is not able to conduct electricity as molecules or ions are closely held together.

Whereas when a substance that is composed of atoms that are held together by ionic bonds is dissolved in water then its ions will start to move freely from one point to another. Thus, this solution will be able to conduct electricity.

Thus, we can conclude that out of the given options, conducts electricity when it is dissolved in water displays a property of a substance that is composed of atoms that are held together by ionic bonds.

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The four fundamental types of organic molecules are nucleic acids, proteins, lipids, and Blank Space __________. A.phosphates B.nitrates C.sulfates D.carbohydrates

D. Carbohydrates

This is the fourth macro-molecule being described.

If this answer helped you, please vote me as brainliest!

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Which subatomic particle contains the energy stored in chemical bonds

Pretty sure that the energy stored in chemical bonds is ATP, so probably the mitochondria? idk if thats what you are asking

Posted in Chemistry

What are the products of the double-replacement reaction between potassium bromide and silver nitrate? Name the resulting compounds.

Answer: The products formed are potassium nitrate (KNO_3) and silver bromide ( AgBr ).

Explanation: Double replacement or double displacement reactions are the reactions in which the positive ions and negative ions of the two reactants interchange to form the products. These reactions are carried out on the basis of their position in reactivity series.

The elements lying above in the reactivity series will be able to displace the elements that lie below in the reactivity series.

For the reaction of potassium bromide and silver nitrate, the reaction follows:

KBr(aq.)+AgNO_3(aq.)\rightarrow AgBr(s)+KNO_3(aq.)

The resulting products are potassium nitrate (KNO_3) and silver bromide ( AgBr ).

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Acetone and sodium chloride both have similiar mass. Explain why their other properties differ. Acetone: C3H6O, melting point = −94°C, liquid at room temperature, low electrical conductivity Sodium chloride: NaCl, melting point = 801°C, solid at room temperature, high electrical conductivity

They differ due to their different types of bonding, because sodium chloride is an ionic compound and acetone contains covalent bonding. 
properties of: ionic compounds contain has high boiling point and low electrical conductivity properties of: covalent bonding has low boiling points and high electrical conductivity.

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What is the name of a solution whose concentration of solute is equal to the maximum concentration that is predicted from the solute's solubility? dilute saturated unsaturated supersaturated

Answer: The correct answer is saturated solution.

Explanation:

For the given options:

Dilute solutions are defined as the solutions in which solute particles are present in less very amount than the solvent particles.

Unsaturated solutions are defined as the solutions where more and more of solute particles can be dissolved in the given amount of solvent.

Saturated solutions are defined as the solutions where no more solute particles can be dissolved in the solvent.  The concentration of the solute particles that can be dissolved in a solution is maximum.

Supersaturated solutions are defined as the solutions where more amount of solute particles are present than the solvent particles.

From the above information, we conclude that the given solution is saturated solution.

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Is AgOH aqueous or a solid?

Answer : AgOH is a solid.

Explanation;

AgOH can be produced from the reaction between NaOH(aq) and AgNO₃(aq). The balanced reaction equation is

NaOH(aq) + AgNO₃(aq)  AgOH(s) + NaNO₃(aq)

AgOH is a brown color precipitate which has a Ksp value as  6.8 x 10⁻⁹. The molecular weight of AgOH is 124.88 g/mol.

Posted in Chemistry

In a molecule of calcium sulfide, calcium has two valence electron bonds, and a sulfur atom has six valence electrons. How many lone pairs of electrons are present in the Lewis structure of calcium sulfide?

Answer:

0

Explanation:

Calcium sulfide has molecular formula CaS. Calcium is a metal of group 2, and sulfur, a nonmetal of group 6, and they form an ionic compound, not a molecule.

So, calcium will give 2 electrons to sulfur, so both of them will have 8 electrons in their valence shell. All these electrons will be in pairs, so there will be 0 lone pairs of electrons.

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Glucose is a simple sugar made up of carbon, hydrogen, and oxygen. What kind of molecule is glucose? A. Glucose is protein. B. Glucose is a nucleic acid. C. Glucose is an organic molecule. D. Glucose is an inorganic molecule

The answer is C. Glucose is an organic molecule.

Glucose is carbohydrate so it cannot be a protein or a nucleic acid. It is an organic molecule. The organic molecule is compound consisting of carbon to which are attached hydrogen, oxygen, and nitrogen. Since, g
lucose is a simple sugar made up of carbon, hydrogen, and oxygen, it, as well as any other carbohydrate, is the organic molecule.

Posted in Chemistry

Carbon atoms have four electrons in their outer shell. This means that a single carbon atom can form up to _______ bonds with other atoms. two eight four six

The answer is: four.

For example compound carbon dioxide (CO₂):

Electron configuration of carbon: ₆C 1s² 2s² 2p².  

Electron configuration of oxygen: ₈O 1s² 2s² 2p⁴.

Carbon atom is sp2 hybridized, it has three sp2 orbitals and one p orbital, they form four bonds.

Oxygen has two p orbitals, they form two bonds (one sigma and one pi bond).

p orbitals from carbon and oxygen overlap and form pi bond.

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A water molecule is composed of two hydrogen atoms and one oxygen atom arranged in a bent shape. Since oxygen is significantly more electronegative than hydrogen, oxygen atoms have a much stronger attraction to shared electrons than does hydrogen. This unequal sharing of electrons and bent shape results in water being called a _________________ . A) polar molecule B) magnetic molecule C) ionic molecule D) covalent molecule

Answer: A)  polar molecule  

Explanation: Polar molecules are molecules which contain atoms of different electronegativities.

Non polar molecules are molecules which contains atoms of same electronegativities.

Water is a polar covalent molecule formed by unequal sharing of electrons. Oxygen being more electronegative tend to keep the electron pair towards itself thus generating a partial negative charge. The hydrogen acquire a partial positive charge thus resulting in a polar molecule.

The bent shape is due to repulsion between lone pairs and bond pairs of electrons.




Posted in Chemistry

A molecule of carbon dioxide (CO2) contains two polar covalent bonds. Why is the molecule nonpolar?

The molecule is non-polar, because the difference in electronegativity between the two sides of the structure equals 0. The electronegativity difference between O (3.5) and C(2.5) is 1 and also on the other side, cancelling each other.

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1.Build or draw the Lewis structure for each of the molecules listed below. H2O, NH3, CH4, CO2 2.Build or draw a model of each of the Lewis structures using any of the materials listed above. Here are the steps: a. For each molecule, represent each element with a spherical (ball shaped) object. b. Each single bond should be represented with a straight object, two straight objects should be used between two atoms to represent a double bond, and three straight objects should be used between two atoms represent a triple bond. c. Remember that the lone pairs on the central atom take up space and play a role in determining the shape of the molecule. Represent each lone pair (nonbonded pairs of valence electrons) on the central atom with a nonbonded object. The bonds and lone pairs on the central atom should be spread apart as much as possible. See example in lesson as a reference. For each of your molecular models, include a Lewis structure drawing or picture of your model. On your drawing or picture, include the following information: 1.What is the central atom? 2.How many atoms are bonded to the central atom? 3.How many lone pairs of electrons are on the central atom? 4.How many single bonds are there in this molecule? 5.How many multiple bonds (double and/or triple) are there in this molecule? For each of your molecules, answer the following questions: 1.Determine the electronegativity between the atoms of each molecule. 2.Identify the bond as either ionic or covalent. 3.State whether the molecule is polar or non polar. 4.Identify the structure as having hydrogen bonding, dipole-dipole moments or London dispersion forces (LDF).

This may help you

Allright for H2O: - The central atom is? --> the oxygen atom - How many atoms are bonded to the central atom? --> 2 hydrogen atoms - How many lone pairs of electrons are on the central atom? --> O has 6 electrons and has 2 single bonds, so 2 pairs - How many single bonds are there in this molecule? --> 2 - How many multiple bonds (double and/or triple) are there in this molecule? --> none For each of your molecules, answer the following questions: 1. Determine the electronegativity between the atoms of each molecule. Electronegativity O = 3.44 Electronegativity H = 2.20 3.44-2.20=1.24, so the electronegativity between O and H = 1.24 2. Identify the bond as either ionic or covalent. Electronegativity of 0.0-1.7 = covalent Electronegativity of 1.7-3.3 = ionic So it's a covalent bond 3. State whether the molecule is polar or non polar. Electronegativity of 0.5-1.7= polar covalent 4. Identify the structure as having hydrogen bonding, dipole-dipole moments or London dispersion forces (LDF). H2O = hydrogen bonding

Posted in Chemistry

Which statement best relates to how the structure of a lipid influences the lipid’s function? The ends of the lipid are attached to each other. Lipids contain fatty acids and glycerol. A lipid is made up of a long chain of phosphorus molecules. A phospholipid has a charged head and an uncharged tail.

I consider the second option represented above correct : A phospholipid has a charged head and an uncharged tail.The reason which led me to pick this one is that one of the options can be truse for oils, but anyway there wasn't mentioned anything about ways of how the structure can impact on the function. 
Do hope it will help you!


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