Which compound is part of the structure of another compound listed?

A. amino acids
B. nucleic acids
C. proteins

The correct abbreviation for each metric unit is:

Kilogram - kg, Milliliter - ml, Kilometer- Km, Meter- m, Millimeter - mm, Centimeter - cm, Gram - g,  Liter - L, and Milligram - mg.

The metric system can be described as a system of measurement that succeeded the decimalized system based on the meter.  Each of the fundamental dimensions can be expressed by a single base unit of measure.

For quantities derived from the base units of the system, units derived from the base units are used such as the square meter being the derived unit for the area, a quantity derived from length.

Metric units can be described as units based on the meter, gram, or second and decimal multiples or sub-multiples of these. The units of the International System of Units (SI). By extension, they involve units of electromagnetism from the CGS units and SI units systems.

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I bonds' primary advantage is that they shield your money's purchasing value from inflation. The amount that a dollar can buy decreases as prices rise throughout the economy. Does inflation remain high

An economy is a system of related production and consumption activities that ultimately determine how resources are divided within a society. The entirety of the goods and services produced and consumed satisfies the needs of those who live and work there.

Most of the following important life situations include economics: how policy is decided by the government. purchasing real estate prospects and monitoring the situation of the home market. being able to decide on a budget with knowledge

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Answer:

The three main subatomic particles that form an atom are protons, neutrons, and electrons.

Explanation:

Answer:

The three main subatomic particles that form an atom are protons, neutrons, and electron

Answer:

D. The reaction in test tube 1 is exothermic, and the reaction in test tube 2 is not.

Explanation:

just took it

The option that best explains the result is option D. That is, the reaction in test tube 1 is exothermic, and the reaction in test tube 2 is not.

In a chemical reaction, heat is either absorbed or released.

In a reaction where there is absorption of heat from the surrounding is called an endothermic reaction.

While in a reaction where heat is released into the surrounding is called exothermic reaction.

From the experiment, there is increase in temperature, from 20 to 25°C, which shows the release of temperature to the surrounding.

Therefore, the reaction in test tube 1 is exothermic, and the reaction in test tube 2 is not.

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The three-dimensional area that the closed surface encloses is known as the volume. Mass divided by volume equals density. Density and volume have a clear inverse relationship. In other words, any change in volume will cause a change in density, and vice versa.

The change in y split by the change in x is the formula for a straight line's slope. Slope is equal to the mass divided by volume since the x and y axes are both equal to mass and volume, respectively. As a result, density is equal to the slope of a mass vs volume graph.

Density=Mass/Volume is a common formula used to describe the mathematical connection between mass and density.

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Answer:

O Trilobites

Explanation:

The first mass extinction that occurred between the Paleozoic and the Mesozoic era caused the extinction of the trilobites.

Extinction are catastrophic events that causes the loss of organisms on the earth surface. Several factors can lead to extinction.

To select the appropriate pipette for each of the following volumes are P1000,  P20, P200, microsyringe.

A. 874 uL (microliters) - A P1000 pipette would be appropriate for this volume. P1000 pipettes can dispense volumes ranging from 100 μL to 1000 μL.

B. 57 uL (microliters) - A P20 pipette would be appropriate for this volume. P20 pipettes can dispense volumes ranging from 2 μL to 20 μL.

C. 340 uL (microliters) - A P1000 pipette or a P200 pipette would be appropriate for this volume. P1000 pipettes can dispense volumes ranging from 100 μL to 1000 μL, and P200 pipettes can dispense volumes ranging from 20 μL to 200 μL. Since the volume is closer to 200 μL, a P200 pipette might be more appropriate in this case.

D. 15 pL (picoliters) - A microsyringe with a nanoliter or picoliter volume range would be appropriate for this volume. Microliter syringes are not appropriate for volumes in the picoliter range. The appropriate syringe size would depend on the accuracy and precision required for the experiment.

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INFORMATION:

We know that:

- An automobile airbag inflates when NaN3 is converted to Na and N2 gas according to the equation,

2NaN3 → 2 Na + 3 N2.

And we must find the volume in (L) of N2 if 143 g of NaN3 completely reacted at STP

STEP BY STEP EXPLANATION:

To find it, we need to work with the conditions as an ideal gas.

The ideal gas equation is

1. We must find n:

To find n, we must first divide the 143 g of NaN3 by the molar mass

So, we have 2.2 mol of NaN3

Now to find n, we must multiply the number of mol of NaN3 by the relation between NaN3 and N2

Then, n = 3.3 mol

2. using STP conditions:

- T = 273K

- P = 760 torr

And using R = 62.36 (L*torr)/(K*mol)

Finally, replacing in the ideal gas equation solver for V

So, 73.92 L of N2 would be produced if 143 g of NaN3 completely reacted at STP.

ANSWER:

73.92 L

The correct ranking of compounds in order of increasing keq for this equilibrium is Acetone < Propanone < Benzaldehyde.

The correct ranking of compounds in order of increasing keq for the equilibrium of each of the carbonyl compounds with HCN to produce cyanohydrins is

Acetone < Propanone < Benzaldehyde.

In the above reaction, the cyanide ion acts as a nucleophile and attacks the carbonyl carbon atom in the carbonyl compound to form an intermediate compound. Then the intermediate compound formed by the reaction between HCN and the carbonyl compound undergoes an intramolecular rearrangement to form cyanohydrin.Based on the stability of intermediate compound formed, the order of increasing stability is as follows:

Acetone < Propanone < Benzaldehyde.

Since the keq is directly proportional to the stability of the intermediate, the order of increasing keq for the equilibrium of each of the carbonyl compounds with HCN to produce cyanohydrins is

Acetone < Propanone < Benzaldehyde.

The correct ranking of compounds in order of increasing keq for this equilibrium is

Acetone < Propanone < Benzaldehyde.

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Answer:

To denote a stable inner configuration and it represents argon

Explanation:

The symbol [Ar] used in the electron configuration of potassium represents the inner electronic configuration of the element.

This argon atom is stable octet with completely filled shells. Most noble gases are used to write the electronic configuration of other atoms. The inner atomic orbitals of elements are similar to those of nearby noble gases.

Answer: 4NH3 + 5O2 —-> 4NO + 6H2O

Explanation: You balance it by making sure each have the same amount on each side.

There is 4 nitrogen on each side.

There is 12 hydrogen on each side (4*3) and (6*2).

There is 10 oxygen on each side (5*2) and (4+6)

The given statement, "If a mineral fizzes when it comes into contact with acetic acid, it is probably composed of calcium carbonate (CaCO₃)" is true because When a mineral fizzes upon contact with acetic acid, it is a strong indication that the mineral is composed of calcium carbonate (CaCO₃).

The fizzing occurs due to the release of carbon dioxide gas (CO₂) during a chemical reaction between the acid and the carbonate compound. Calcium carbonate is a common mineral found in various forms such as limestone, marble, and chalk. It is insoluble in water but reacts readily with acids, including acetic acid, which is the main component of vinegar.

The reaction between calcium carbonate and acetic acid can be represented by the following equation:

CaCO₃ + 2CH₃COOH → Ca(CH₃COO)₂ + H₂O + CO₂

In this reaction, calcium carbonate reacts with acetic acid to form calcium acetate, water, and carbon dioxide gas. The release of carbon dioxide gas is responsible for the fizzing observed when the mineral comes into contact with the acid.

Therefore, if a mineral fizzes when it encounters acetic acid, it is likely composed of calcium carbonate (CaCO₃). This fizzing reaction is often used as a simple and effective test to identify the presence of calcium carbonate in minerals or rocks.

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Burette is the lab equipment used to estimate the volume of liquid during titration. The volume is measured by the bottom meniscus to the nearest 0.01 mL.

Burette is an instrument used in quantitative analysis like the volume of the sample in the titration methods and is made of a glass tube.

In the volumetric analysis, the final volume of the liquid is measured by locating the lower meniscus and is taken approximately near 0.01 ml as the burettes have markings of 0.1 mL.

Therefore, option a. locate the bottom meniscus and mark nearest to 0.01 mL.

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Answer:

i believe it's A-atomic mass

Explanation:

hope this helps u, sorry if it doesn't.

Answer:

The periodic table is organized by atomic number.  If you look closely, the atomic number is usually at the top of the element square.  It goes in counting order horizontally.

Hope this helps :)

Answer:

Silver (Ag)

Explanation:

The electronic configuration of copper is shown below;

[Kr]4d10 5s1

We can see that there is only one 5s1 electron. Hence Ag^+ tends to display a pseudo noble gas configuration. This pseudo noble gas configuration explains why silver is prevalent in the +1 oxidation state.

The other transition metals have many stable oxidation states found in nature. Chromium is observed both in +3 and +6 oxidation states. Iron is found in +2 and +3 oxidation states and copper is mostly stable in the +2 oxidation state since the +1 oxidation state readily disproportionate.

Hence silver tends to have only a single ionic charge for reasons aptly stated above.

Answer:

\((b) \: apparent \: magnitude \\ \\ \)

Explanation:

Astronomers define star brightness in terms of apparent magnitude — how bright the star appears from Earth — and absolute magnitude — how bright the star appears at a standard distance of 32.6 light-years, or 10 parsecs.

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The measurement of a star depends on the distance of the star from earth

is Apparent magnitude.

The apparent magnitude of a star is how bright the star appears in the sky

from the earth. The apparent magnitude of a star depends on two main

factors known as:

These factors help to accurately determine the brightness of stars in the

solar system.

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A molecule with three bonded atoms and zero lone pairs has an electron domain geometry of trigonal planar.

The ideal bond angle for this geometry is 120 degrees.

The hybridization of the central atom in this molecule is sp2.

The given molecule has three bonded atoms and no lone pairs, meaning that it has a total of three electron domains. The ideal bond angle for a molecule with three electron domains is 120 degrees.

To determine the hybridization of the central atom, we need to first identify the type of atoms that are bonded to it. Without knowing the specific molecule, we cannot determine the hybridization.

Regarding the polarity of the molecule, it depends on the electronegativity difference between the central atom and the bonded atoms. If there is a significant difference in electronegativity, then the molecule will be polar. If the electronegativity difference is minimal, then the molecule will be nonpolar.

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Answer:

16

Explanation:

2 per molecule X 8 molecules in total

Answer:

78g/mol

hope its helps u

CaO + CO2 → CaCO3

56 g + 44 g = 100 g

2Ag + H₂S → Ag2S + H₂

2(108 g) + 34 g = 250 g

20 g + 70 g = 15 g + 30 g

This equation does not follow the Law of Conservation of Mass as the total mass on the left side (90 g) does not equal the total mass on the right side (45 g). There must be an error in the given masses or in the equation itself.

The Law of Conservation of Mass states that in a chemical reaction, the total mass of the reactants must be equal to the total mass of the products. This means that matter is neither created nor destroyed in a chemical reaction, but is rather transformed from the reactants into the products.

In other words, the number of atoms of each element on the reactant side of the equation must be equal to the number of atoms of each element on the product side. This principle is fundamental in chemistry and is used to balance chemical equations and to ensure that reactions proceed in a predictable manner.

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Answer:

No, they would not be balanced because their weights would change.

Explanation:

Weight is the effect that gravitational pull has on objects on Earth whereas mass is how much matter there is in an object. Mass does not change despite gravitational pull, but the force of gravity (weight) is different depending on where you are.

Answer:

1. 4 Km

2. 40 minutes

3. 0.1 Km/min

Explanation:

1. Determination of the total distance travelled.

From the graph given in the question above, we can see that the total distance travelled by the object is 4 Km since the path taken by the object in the graph ends at the 4 km mark.

2. Determination of the Time taken.

A careful observation of the graph given in the question shows that the entire trip took 40 minutes since the distance travelled by the object ends at the 40 minutes mark on the graph.

3. Determination of the average speed of the object.

Total distance = 4 Km

Total time = 40 mins

Average speed =..?

Average speed = Total distance / total time

Average speed = 4 / 40

Average speed = 0.1 Km/min

The average speed is zero if our frame of reference is the rotation of the Earth because the relative distance with respect to the earth is zero.

Average speed = 0.26 km/hr

total time = 316 minutes

distance = speed * time

                = 8.3 * 5*1/30 = 8.3 *1/6

                = 1.38 km

Average speed = total distance / total time

                             1.38 km / 5.27

                             = 0.26 km/hr

Distance is described to be the importance or length of displacement among positions. observe that the gap between two positions is not the same as the distance traveled between them. Distance traveled is the whole period of the path traveled among positions. Distance traveled isn't a vector.

There are three foremost styles of average: imply, median, and mode. each of these strategies works barely otherwise and frequently results in slightly distinct ordinary values. The suggest is the maximum usually used commonly. To get the mean cost, you add up all of the values and divide this general by means of the variety of values.

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Alternating co-polymers consist of [blank 1] different monomers and are among the most [blank 2] well-defined and structurally ordered of co-polymers.

1. The blank 1 is filled with "two" or "differently" as alternating co-polymers are composed of two different monomers that alternate in the polymer chain. Each monomer unit is repeated in a regular sequence.

2. The blank 2 is filled with "well-defined" or "ordered" as alternating co-polymers have a highly ordered structure due to the alternating arrangement of monomer units. This regular sequence provides a distinct pattern and uniformity in the polymer chain, making them more organized compared to other types of co-polymers.

In summary, alternating co-polymers are composed of two different monomers arranged in an alternating pattern, and they exhibit a high degree of structural order and uniformity.

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According to the concept of half-life, 6.25 g of thorium -231 is left after 102 hours.

Half -life of a substance is defined as the time which is required for half of the quantity of a radioactive substance to get decayed.It is a term which is used in nuclear chemistry for describing how quickly unstable atoms undergo radioactive decay into other nuclear species by emitting particles or the time which is required for number of disintegrations per second of radioactive material to decrease by one half of its initial value.

For thorium -231 one half life=25.5 hours ,so,102 hours =102/25.5=4 half lives.

After 1 half life 100 g is left , so after 4 half lives,that is, 1/2×1/2×1/2×1/2×100=6.25 g.

Thus, after 102 hours 6.25 g is left.

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You should probably rephrase this:

According to Coulomb's Law, as the number of protons in an atom increases (or atomic number), the nuclear energy of atoms will increase, pulling electrons closer.

I think the order would be Be, Li, K but feel free to check online before you submit any work with this.

Answer:

false

Explanation:

Because volume is in m3

Answer:

False

Correct answer: 3.75m³

Explanation:

Given parameters:

  Height of box  = 1m

  Length of box  = 2.5m

  Width of box  = 1.5m

Unknown:

Volume of the box  = ?

Solution:

The volume of the box is given as:

   Volume  = length  x height x width

 Volume  = 2.5 x 1 x 1.5

 Volume  = 3.75m³

Answer:

The correct answer is - the control group.

Explanation:

The control group is one of two groups that are present in any investigation or experiment which is not getting any treatment as the experimental group gets. It remains constant or in natural conditions instead of influenced by any treatment or factor.

An experimanetal group that is manipulated by the researcher by the independent variable is compared to The control group to see the differences developed by the manipulation or influence.

Answer:

COOH is the carboxylic acid.