Using proton NMR, explain how you could quickly differentiate between cis-2-butene and trans-2-butene.

Answer:

What I think it is it's.. 3?

Chemical equations are symbols and chemical formulas that depict a chemical reaction symbolically.

Thus, With a plus sign separating the entities in both the reactants and the products and an arrow pointing in the direction of the products to indicate the direction of the reaction, the reactant entities are given on the left and the product entities are given on the right.

Chemical formulas can be mixed, structural (represented by pictures), or both. The absolute values of the stoichiometric numbers are shown as coefficients next to the symbols and formulas of the various entities.

A chemical equation is made up of a list of reactants (the chemicals used to start the reaction) on the left, an arrow symbol, and a list of products on the right.

Thus, Chemical equations are symbols and chemical formulas that depict a chemical reaction symbolically.

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This is a scenario which happens when someone incorrectly thinks that they have found or recognized a particular person.

In the case of Tyron Briggs he may have been falsely identified as a result of lack of substantial evidence pinning him to the crimes.

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Answer:

in days

Explanation:

A short term environmental change refers to changes in the environment that happens within a short period of time, for example, flooding, drought, volcanic eruptions etc. In contrast to short term environmental change, long term environmental change takes place over a long period of time hence species have a longer time to adapt to it. Short term environmental changes may or may not be caused by humans. An example of a short term environmental change caused by humans is oil spillage. Short term environmental changes may lead to the the migration of species from the ecosystem.

Short term environmental changes usually occur within a very short time. The greatest time frame in which a short term environmental change can occur is in a matter of days. Only longterm environmental changes span hundreds and thousands of years.

Answer:

it is c

Explanation:

i took the test :)

The conversion factors to the conversions that they would be used for as follows:

1.moles/grams ⇒ d. mass to mole

2.grams/moles ⇒ a. mole to mass

3.atoms/grams ⇒ e. mass to atom

4.moles/atoms ⇒ c. atoms to mole

5.atoms/moles ⇒ b. moles to atoms

The term mole is defined as the amount of substance of a system which contains as many elementary entities.

One mole of any substance is equal to 6.023 × 10²³ units of that substance such as atoms, molecules, or ions. The number 6.023 × 10²³ is called as Avogadro's number or Avogadro's constant.

The mole concept can be used to convert between mass and number of particles.

Thus, The conversion factors to the conversions that they would be used for moles/grams ⇒ mass to mole.

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Chert is a type of mineral that is made up of quartz. Chert has an orderly internal arrangement of atoms/molecules and is considered to be one of the most difficult minerals to identify.

36. Anglesite PbSO 4 - C) Sulfate 37. Sphalerite ZnS - A) Sulfide 38. Orthoclase KAISi 3 O 2 - D) Silicate 39. Hematite Fe 2 O 3 - B) Oxide40.

Can chert scratch gypsum?

Answer: NO 41.

Which of these provide necessary information to answer Question 43?

Answer: d) All of the above.42.

Does chert have an orderly internal arrangement of atoms/molecules?

Answer: YES43.

Which of these provide necessary information to answer Question 45?

Answer: a) Chert is a mineral.

Chert is a type of quartz, but it is not able to scratch gypsum. Since quartz is a mineral with a Mohs scale rating of 7, whereas gypsum is rated 2. A mineral is a naturally occurring, inorganic solid with a defined chemical composition and a crystalline structure. Chert is a type of mineral that is made up of quartz. Chert has an orderly internal arrangement of atoms/molecules and is considered to be one of the most difficult minerals to identify.

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The match for the questions are given below

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Answer:

A covalent bond, also called a molecular bond, is a chemical bond that involves the sharing of electron pairs between atoms. These electron pairs are known as shared pairs or bonding pairs, and the stable balance of attractive and repulsive forces between atoms, when they share electrons, is known as covalent bonding

Answer:

d. 12.3 grams of Al2O3

Explanation:

The balanced chemical equation of this chemical reaction is as follows:

4Al + 3O2 --> 2Al2O3

Based on the balanced equation, 4 moles of aluminum (limiting reagent) reacts to form 2 moles of aluminum oxide (Al2O3).

First, we need to convert the mass of aluminum to moles using the formula;

mole = mass/molar mass

Molar mass of Al = 27g/mol

mole = 6.50/27

= 0.241mol of Al.

Hence, if 4 moles of aluminum (limiting reagent) reacts to form 2 moles of aluminum oxide (Al2O3).

Then, 0.241mol of Al will produce (0.241 × 2/4) = 0.241/2 = 0.121mol of Al2O3.

Convert this mole value to molar mass using mole = mass/molar mass

Molar mass of Al2O3 = 27(2) + 16(3)

= 54 + 48

= 102g/mol

mass = molar mass × mole

mass = 102 × 0.121

mass of Al2O3 = 12.34grams.

Answer:

The Eukaryotic cell that the organelle shows below belongs to the Nucleus.

Explanation:

In fact, the mere presence of a nucleus is considered one of the defining features of a Eukaryota cell.

Answer:

\(3Ca(OH)_{2} + 2H_3PO_4 ==> Ca_3(PO_4)_2 + 6H_2O\)

Explanation:

The chemical equation represented as:

\(2H_3PO_4 (aq)+ 3Ca (OH)_2 (aq) ----- > Ca(PO_4)_2 (s)+ 6H_2O (l)\)

A chemical equation is defined as a symbolic representation of a chemical reaction in the form of symbols and chemical formulas. Coefficients that are used in front of reactants and products to balance the equation to show that matter is conserved.

Representation of chemical reactions by symbols and formulas of substances is called chemical equation. In this equation A and B are called reactants and C and D are called products while the arrow shows the direction of the chemical reaction.

For the above given information,

\(2H_3PO_4 (aq)+ 3Ca (OH)_2 (aq) ----- > Ca(PO_4)_2 (s)+ 6H_2O (l)\)

Phosphoric      Calcium                               Calcium          Water

acid                hydroxide                            phosphate

Where, Aqueous phosphoric acid and aqueous calcium hydroxide are reactants and solid calcium phosphate and water are products.

Thus, the chemical equation represented as:

\(2H_3PO_4 (aq)+ 3Ca (OH)_2 (aq) ----- > Ca(PO_4)_2 (s)+ 6H_2O (l)\)

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Answer:

its a glass jar sitting on the shelf

Precipitate-forming reactions would be most appropriate for identifying the presence of whether an element is present in the solution.

In a precipitation reaction, dissolved chemicals will get combined to form one or more solid products. These kinds of reactions, which are also known as double displacement, double replacement, or metathesis reactions which are frequently taken place through the aqueous solutions and involved in the exchange of ions between ionic compounds.

Through the precipitation reactions, the presence of element will be confirmed and analyzed. The presence of lead in water sources could be checked by adding the chemical and looking for the appearance of a precipitation whether it should be at instant , and the chemical combines with lead to generate a precipitate.

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Answer:

Some physical properties of water:

Of course, there are many more but these are some common ones.

Answer:

Explanation:

Balanced forces  are opposite in direction and equal in size.

Balanced forces are  in a state of equilibrium.

Answer:

Balanced forces are forces whose net amount remains zero.

This can take place when two equal forces are acting in opposite direction.

Balanced forces don't make any  change in the position of objects

Answer:

2497 moles

Explanation:

human body = 75000 g

60% is H2O

so H2O = 0.60 x 75000 g =45000 g

molar mass of H2O =18.02

so

45000 g/18.02 g/mole = 2497 moles to correct sig fig

Answer:

its cold

Explanation:

Answer:

204 kilojoules or 725.8 joules if you miss typed kjoules

Explanation:

Carbohydrate: 4 kilojoules per gram

Fat: 9 kilojoules per gram

Protein: 4 kilojoules per gram

Given that the glazed doughnut contains 22 g of carbohydrate, 12 g of fat, and 2 g of protein, we can calculate the energy content as follows:

Energy from carbohydrate = 22 g * 4 kilojoules/gram

Energy from fat = 12 g * 9 kilojoules/gram

Energy from protein = 2 g * 4 kilojoules/gram

Total energy content = Energy from carbohydrate + Energy from fat + Energy from protein

Total energy content = (22 g * 4 kilojoules/gram) + (12 g * 9 kilojoules/gram) + (2 g * 4 kilojoules/gram)

Calculating this expression:

Total energy content ≈ (88 kilojoules) + (108 kilojoules) + (8 kilojoules)

Total energy content ≈ 204 kilojoules

Therefore, the glazed doughnut contains approximately 204 kilojoules of energy.

------------------------------------------------------------------------------------------------------

To determine the energy content of the glazed doughnut, we need to know the energy values per gram for each macronutrient.

The energy content (in joules) per gram of each macronutrient is as follows:

Carbohydrates: 4 calories (or 16.7 joules)

Fat: 9 calories (or 37.7 joules)

Protein: 4 calories (or 16.7 joules)

To calculate the energy content of the glazed doughnut, we can multiply the grams of each macronutrient by their respective energy values and sum them up.

Energy from carbohydrates = 22 g * 16.7 joules/g

Energy from fat = 12 g * 37.7 joules/g

Energy from protein = 2 g * 16.7 joules/g

Total energy content of the glazed doughnut = Energy from carbohydrates + Energy from fat + Energy from protein

Total energy content of the glazed doughnut = (22 g * 16.7 joules/g) + (12 g * 37.7 joules/g) + (2 g * 16.7 joules/g)

Using a calculator, we can find the total energy content of the glazed doughnut:

Total energy content ≈ 725.8 joules

Therefore, the glazed doughnut contains approximately 725.8 joules of energy.

Specific accommodations and technological advancements needed for a successful moon mission include radiation shielding, advanced life support systems, reliable communication systems, and improved propulsion technology.

Radiation shielding is important for a moon mission because the moon has little to no atmosphere, which means that astronauts are exposed to high levels of radiation from cosmic rays and solar flares. Therefore, effective shielding is needed to protect the crew and equipment from radiation damage.

One example of improved propulsion technology that could benefit a moon mission is the development of electric propulsion systems, which are more efficient and can provide longer periods of thrust than traditional chemical rockets. Electric propulsion can also reduce the amount of fuel needed for a mission, which can lower costs and increase payload capacity.

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Answer:

No = Avagardro's number = 6.02 x 10^23

No.of atoms = no.of moles x No x atomicity

= 75.4 x 6.02 10^23 x 1

= 453.908 x 10^23 atoms .

Mass of each element in one mole of sulfuric acid: Mass of hydrogen = 2 × (1.008) = 2.016 g/mol. Mass of sulfur = 1 × 32.06 = 32.06 g/mol.

...

What is the percent composition of NaHCO₃?

Element Percent Composition

Sodium (Na) 27.367%

Hydrogen (H) 1.2%

Carbon (C) 14.298%

Oxygen (O) 57.14%

Answer:

The new atomic mass of oxygen is 64u

Explanation:

Given

Taking the mass by part on the scale of 1/12 gives atomic mass of oxygen = 16 u

Now, when the scale is changed from 1/12 to 1/3, the new mass would become

\(\frac{16}{\frac{1}{12} } * \frac{1}{3} \\= \frac{16 * 12}{3} \\= 64\)

The new atomic mass of oxygen is 64u

Answer:

2C8H18 + 25O2 → 16CO2 + 18H2O

Explanation:

2.8 grams of NaCl are in 14.3 L of a 2.38 M solution of NaCl." The molarity is defined as the number of moles of solute present in 1 liter of solution.

The term molarity is defined as the number of moles of solute present in 1 liter of solution.Molarity is also known as the molar concentration of a solution.

Given:

Volume of solution = 14300 mL

Molarity of sodium chloride = 2.38 M

Molar mass of sodium chloride (NaCl) = 59 g/mole

2.38 = mass of NaCl × 1000 / 59g × 14300

mass of NaCl = 2.38 × 59g × 14300 / 1000

= 2.8 grams

Thus, 2.8 grams of NaCl are in 14.3 L of a 2.38 M solution of NaCl.

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Answer:

Explanation:

Molarity = number of moles / volume

If 550 mL of a 3.50 M KCl solution are set aside and allowed to evaporate until the volume of the solution is 275 mL, which is half of 550 mL, the molarity of the solution with the same number of moles of KCl is 3.5 * 2 = 7.00 M

The molarity of the solution will be 7 M.

The total count of moles of solute per liter of a particular solution is known as a solution's molarity.

The volume of just an object is a measurement of how much space it takes up.

Molarity of the solution can be determined by the formula:

\(M_{1} V_{1} = M_{2} V_{2}\)

where, M = molarity of solution. V = volume.

Given data:

\(M_{1}\) = 3.50 M

\(M_{2}\) = ?

\(V_{1}\) = 550 mL

\(V_{2}\) = 275 mL

Now, put the value of given data in molarity equation.

\(V_{2} = M_{1} V_{1} /M_{2}\\V_{2} = (3.50 M) (550 mL) / (275 mL)\\V_{2} = 7 M\)

Therefore, the molarity of the solution will be 7 M.

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Answer:

When one object uses force to move the other.

Explanation:

This is called Thrust.Thrust is used in airplane engines,or an engine can be  a source of Thrust,we use our legs to Thrust us forward when we walk!

Sir Isaac Newton's third law explains that for every action, or force, in nature, there is an equal and opposite reaction.

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What a camera does is capture and record the image of objects

A camera is a device that is used to capture or record the image of objects.

There are two types of camera:

Still cameras capture and record images while motion cameras capture and record moving images of objects or people.

Cameras generally work using a system of lenses that capture rays of light from objects and redirect them to a single point - a sensor of film - where images of the objects are created.

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An oil molecule has a non-polar structure. Instead of having one positive and one negative end, its charge is evenly balanced.

This means that oil molecules are more attracted to other oil molecules than water molecules are to each other, and water molecules are more attracted to each other than oil molecules are to each other, hence the two never combine.

When the molecular liquid is nonpolar, the water molecules simply attract one another, ignoring the nonpolar liquid. As a result, the two liquids are immiscible.

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Because not all of the oxygen was reacted, there appears to be a mass loss.

Solid MgO is produced from the simultaneous combustion of solid magnesium metal and oxygen gas, which burns with a flash of light and heat. The initial masses of magnesium and oxygen added together are less than MgO.

Magnesium oxide is created when oxygen and magnesium interact. After burning, it transforms into a white magnesium oxide powder. Magnesium and oxygen react to produce a light powerful enough to momentarily impair your vision. Magnesium burns so brilliantly because it produces a lot of heat while doing so. This powder is produced by magnesium transferring two electrons to oxygen atoms. It is an exothermic process.

2Mg + O2 → 2MgO is a prime illustration of an oxidation and combination process.

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Answer:

The atomic combinations can be matched to the appropriate functional groups as follows:

- A. C-O-C: C. Ester

- B. O=C-O-H: B. Carboxylic acid

- C. O=C-O-C: C. Ester

- D. C-O-H: A. Alcohol

Explanation: