An engineering company needs to solve a design problem. It is designing a high-speed train to transport passengers between Boston and Atlanta. Which statement is a constraint for this project? A. The train must have a dining car in which meals are served. B. The train must be able to carry at least 300 passengers. C. The train must cost less than $6 billion to build. D. The train must be able to complete the trip in six hours. PLEASE HELP​

valence electrons

which is an outer shell electron

Answer:

9.03 x 10²³atoms

Explanation:

Given parameters:

Number of moles of CO₂  = 1.5mol

Unknown:

Number of atoms  = ?

Solution:

In a mole of a substance, we have the Avogadro's number of particles which is 6.02 x 10²³atoms.

  Using this number, we can determine the amount of atoms in any substance.

If;

       1 mole of CO₂ contains 6.02 x 10²³ atoms;

     1.5mole of CO₂ will contain 1.5 x 6.02 x 10²³ atoms

                                                = 9.03 x 10²³atoms

Answer:

hi basically also also Aussie

H2O + CO2 = CO2 Plus H2O + CH4. As there are 4 moles of both oxygen and hydrogen here on side that reacts but three and two moles, respectively,  the preceding equation also isn't balanced.

Response and justification CO2 and H2O are the end results of the chemical process. Methane combustion is depicted in the chemical equation. A chemical equation's arrow, which points to a product side, indicates the reaction's direction (shows the products).

Products are the organisms that emerge from chemical processes. In a chemical reaction, reactants go through a highly energy transition stage before becoming products. This reaction results in the consumption of the reactants.

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These indicators suggest a chemical reaction has occurred, leading to the formation of new substances.

Chemical changes, also known as chemical reactions, occur when a substance undergoes a transformation into one or more new substances with different chemical and physical properties. Indicators of a chemical change include:

1. Color change: A chemical reaction may cause a visible color change in the reactants. For example, when iron rusts, it changes from its original shiny silver color to a reddish-brown color.

2. Formation of gas: A chemical reaction may result in the formation of a gas. For instance, when vinegar and baking soda are mixed, they produce carbon dioxide gas, which is visible as bubbles.

3. Heat or light emission: A chemical reaction may generate heat or light energy. For example, when fireworks explode, they release light and heat energy.

4. Formation of a precipitate: A chemical reaction may form a solid precipitate. For example, when silver nitrate and sodium chloride are mixed, they produce a white precipitate of silver chloride.

5. Irreversibility: A chemical reaction is usually irreversible. Once the reaction has taken place, it is not possible to reverse the process to the original reactants.

I hope that helps answer your question. If you have any further questions or need clarification, please let me know. Also, note that this response is 150 words long.

The five indicators of a chemical change are:

1. Color change: A reaction may produce a new substance with a different color.
2. Gas production: Bubbles or the release of a gas can be observed during a chemical reaction.
3. Formation of a precipitate: A solid forms when two solutions are mixed, indicating a new substance is created.
4. Temperature change: A reaction may cause the temperature to increase (exothermic) or decrease (endothermic).
5. Change in odor: A chemical change may produce a new substance with a distinct smell.

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Answer:In the picture

Explanation: None

Answer:

Carbon dioxide and water vapor

Explanation:

Answer:

Its believe its water vapor and carbon dioxide

The following qualities must be present in a cutting tool:

1. Hot Hardness

2. Hardiness

3. Resistance to Wear

4. Chemical Inertness or Stability

5. Resistance to Shock

6. Reduced Friction

7. Affable Price.

Heat is produced during the cutting of metal. Nearly 600°C to 1800°C is a high raised temperature, and the tool material must be able to keep its hardness, wear resistance, and strength at this temperature. The fluctuation in hardness of several tool materials with an increase in temperature .

The fundamental principle of all metal cutting operations is to gradually push a cutting tool with one or more cutting blades through the surplus material on the work piece. While power is applied, a machine tool and its accessories securely hold the work piece and the tool.

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Answer:

physical change

Explanation:

im not 100% but thats what i would pick because all you are doing is changing the state they are in. the eggs arnt chemically changing at all. i think ur overthinking it

The pH of the solution is now obtained as 10 after deprotonation.

We know that the pH has to do with the degree of the acidity or the alkalinity of system. Now we know that the pH can be measured by means of a pH meter.

In the body, there are a lot of biological molecules that work together to make the body to function effectively. Of all of these compounds, the most abundant of the biological molecules that are important in the body are the protein molecules.

The protein molecule is composed of the amino acids. Now we know that the amino acids can be protonated or deprotonated and the pH of the system would depend on whether the amino acid is protonated or deprotonated. The deprotonation of the substrate would make it much more basic.

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Missing parts;

Consider a di-glycine dipeptide (e.g. two glycine amino acids that have been covalently bonded together via a peptide bond). If the amino group is neutral and the C-terminal carboxy group is deprotonated, which pH value do you expect is most consistent with these observations?

Group of answer choices

a. 1

b. physiological pH

c. 3

d. the pKa of an aspartic acid side-chain carboxylate

e. 10

Answer:

16.84 dm3 of hydrogen peroxide will be used to produce 8.42 dm3 of oxygen.

Explanation:

Equation for the reaction:

H2O2 --------> 1/2 O2 + H20

1 mole of hydrogen peroxide reacts to form half mole of oxygen

At STP, 22.4 dm3 of hydrogen peroxide will react to form 1/2* 22.4 dm3 of oxygen

So 22.4 dm3 of hydrogen peroxide forms 11.2 dm3 of oxygen

If 8.42L of oxygen were formed, how many volume of hydrogen peroxide is used?

From 22.4 dm3 of H2O2 = 11. 4 dm3 of O2

(22.4 * 8.42 / 11.4 )dm3 of hydrogen peroxide will form 8.42 dm3 of oxygen.

= 16.84 dm3 of hydrogen peroxide will be used.

In the reaction of hydrogen peroxide to form oxygen, 16.84 dm3 of hydrogen peroxide will give off 8.42 dm3 of oxygen.

Answer:

0.01596 M

Explanation:

This is a stoichiometry problem hence we need to obtain the balanced reaction equation before we can effectively proceed in solving the problem at hand.

Given the reaction equation;

2H2O2(aq) -------> 2H2O(l) + O2(g)

2 moles of hydrogen peroxide yields 1 mole of oxygen

I mole of oxygen occupies 22.4 L volume.

Hence

2 moles of hydrogen peroxide produces 22.4 L of oxygen

x moles of hydrogen peroxide produces 8.42 L of oxygen

x= 2 × 8.42/22.4

x= 0.75 moles of hydrogen peroxide

From

Number of moles = concentration × volume

Number of moles= 0.75 moles

Volume = 47 L

Concentration of hydrogen peroxide= number of moles/ volume

Concentration of hydrogen peroxide= 0.75 moles/47 L

Concentration of hydrogen peroxide= 0.01596 M

We can infer that there are various intermolecular forces between water and ammonia.

The intensity of the intermolecular interactions between a substance's molecules affects its boiling point. Although water and ammonia have comparable molecular sizes and weights, their boiling points differ considerably. This implies that the intermolecular interactions between ammonia and water are different.

The powerful intermolecular force of hydrogen bonding causes water molecules to be drawn to one another. When the hydrogen atom of one water molecule is drawn to the oxygen atom of another water molecule, hydrogen bonding takes place.

As a result, the water molecules are held together by a web of intermolecular forces. These hydrogen bonds need a lot of energy to form. Consequently, water has a high boiling point.

On the other hand, dipole-dipole interactions between molecules occur between ammonia molecules. The nitrogen atom in the polar molecule ammonia (NH3) is more electronegative than the hydrogen atoms.

The hydrogen atoms are somewhat positively charged as a result of this polarity, while the nitrogen atoms are partially negatively charged. Ammonia has a lower boiling point because the dipole-dipole interactions between its molecules are less than the hydrogen bonds in water.

As a result, we can infer that the intensity of the intermolecular forces between water (hydrogen bonding) and ammonia (dipole-dipole interactions) differs based on the drastically different boiling temperatures of the two substances.

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Among the given options, an arrangement where two chlorine atoms are adjacent to each other would not be a possible arrangement monomer in polyvinyl chloride (PVC).

Polyvinyl chloride (PVC) is a polymer made from the monomer vinyl chloride, which has the chemical formula CH2=CHCl. In the polymerization process, multiple vinyl chloride monomers combine to form a long chain polymer structure.

In PVC, the chlorine atom (Cl) in the monomer is attached to the carbon atom adjacent to the double bond. The carbon-carbon backbone of PVC consists of alternating carbon and chlorine atoms along the polymer chain. This alternating arrangement of carbon and chlorine atoms gives PVC its characteristic properties, including its strength, durability, and resistance to chemicals.

Since the chlorine atoms are attached to alternating carbon atoms, it is not possible for two chlorine atoms to be adjacent to each other in the PVC polymer chain. If such an arrangement were to occur, it would result in an unstable structure that is not characteristic of PVC. Therefore, an arrangement where two chlorine atoms are adjacent would not be a possible arrangement in PVC.

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At 500 K, the equilibrium constant `K_p` for the gas-phase thermal decomposition of tert-butyl chloride is 3.45.

A chemical reaction proceeds in both forward and backward directions. At some point in time, the rate of forward and backward reaction becomes equal.

At this stage, the system is said to be in a state of equilibrium. When the concentration of products and reactants no longer changes, the reaction is said to have reached equilibrium.

Constant is the term that is used for the ratio of the concentrations of products to the concentrations of reactants at equilibrium.

This ratio is also called the Equilibrium Constant `(K)`. It is only used for reversible reactions and its value changes with changes in temperature.

What is the formula of Equilibrium Constant `K_p`?Equilibrium Constant `K_p` is defined as the ratio of the partial pressures of products and reactants when the reaction reaches equilibrium.

Mathematically, it is given as:`K_p = (P_A)^a * (P_B)^b / (P_C)^c * (P_D)^d`where `A` and `B` are products and `C` and `D` are reactants. `a`, `b`, `c` and `d` are the respective coefficients in the balanced chemical equation. `P` is the partial pressure of the given substance.Given equation for the thermal decomposition of tert-butyl chloride:`(CH3)3CCl(g) ⇌ (CH3)2C=CH2(g) + HCl(g)`

The Equilibrium constant `K_p` of the given equation at 500K is given as:`K_p = 3.45`

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The characteristics associated with organic farming methods or conventional agriculture are soil health, genetic modification, animal welfare and cost, respectively.  

Organic farming methods avoid the use of synthetic pesticides and fertilizers, instead relying on natural methods like crop rotation, composting, and biological pest control.

Here are some characteristics associated with organic farming methods and conventional agriculture:

1. Use of synthetic pesticides and fertilizers: The use of synthetic pesticides and fertilizers is more common in conventional agriculture than in organic farming methods.

2. Soil health: Soil health is more of a priority in organic farming methods than in conventional agriculture.

3. Genetic modification: The use of genetically modified crops is more common in conventional agriculture than in organic farming methods.

4. Animal welfare: Animal welfare is more of a priority in organic farming methods than in conventional agriculture.

5. Cost: Conventional agriculture is often less expensive than organic farming methods.

Therefore, it's important to note that there are many other factors that can influence agricultural practices, and that there is a wide range of variability within both organic farming methods and conventional agriculture.

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Answer:

halogen

Explanation:

Group VIIA/halogen/ is the only group in periodic table in which all the elements are nonmetals. This group contains F, Cl, Br, I, and At. Halogen meaning salt producer.

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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Answer:

Mass = 23.36 g

Explanation:

Given data:

Number of particles of CO₂ = 3.20 ×10²³

Mass of  CO₂ = ?

Solution:

1 mole contain 6.022×`10²³ particles,

3.20 ×10²³ particles  × 1 mol / 6.022×`10²³ particles

0.531 mol

Mass of CO₂:

Mass = number of moles × molar mass

Molar mass = 44 g/mol

Mass =  0.531 mol× 44 g/mol

Mass = 23.36 g

Answer:

No and yes

Explanation:

Xenon is a noble gas and beryllium is a metal

Answer: no and yes i also agree

Xenon is a noble gas and Beryllium a metal

Explanation:

Answer:

It can't be broken and it can be moved

Explanation:

Answer:

Liquid and solid

Explanation:

The following have thickest layer of peptidoglycan in the cell wall : gram-positive bacteria

Thickened peptidoglycan layer in Gram positive cells allows them to retain the stain ( and hence remaining 'stain positive' or 'Gram positive) where as thin layer seen in Gram negative cells cannot prevent the stain from leeching out (and hence stain and Gram negative).

Gram-positive organisms have thicker peptidoglycan cell wall as compared to gram-negative bacteria. It is 20 to 80 nm thick polymer whereas peptidoglycan layer of the gram-negative cell wall is 2 to 3 nm thick and covered with outer lipid bilayer membrane.

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Answer:

3 things

Explanation:

something to keep it insulated and stay warm, a container, a lid that can open and close.

A mineral is a naturally occurring inorganic solid element or compound. It can have different properties that depend on its chemical composition and crystal structure.

A mineral can be classified as either extrusive or intrusive and may consist of interlocking or bonded grains of matter. Sand grains that are cemented together to form rocks are not considered minerals. A mineral is a naturally occurring inorganic solid element or compound. It can have different properties that depend on its chemical composition and crystal structure. A mineral can be classified as either extrusive or intrusive and may consist of interlocking or bonded grains of matter. Extrusive minerals are formed on the earth's surface from molten lava that has cooled and solidified. Extrusive minerals have a fine-grained texture because they cool quickly on the surface. Intrusive minerals are formed beneath the earth's surface from molten magma that has cooled and solidified. Intrusive minerals have a coarse-grained texture because they cool slowly beneath the surface. The interlocking or bonded grains of matter in a mineral are called crystals. The crystals in a mineral are arranged in a repeating pattern that gives the mineral its characteristic shape and structure. The properties of a mineral, such as color, luster, and hardness, depend on the chemical composition and crystal structure of the mineral. Minerals are important in our daily lives and are used in many industries such as construction, electronics, and jewelry making. For example, quartz is used in electronics because of its piezoelectric properties, which allow it to convert electrical energy into mechanical energy. Calcite is used in construction because it is a common constituent of cement and concrete. Diamond, the hardest mineral, is used in jewelry making because of its brilliance and durability.

In conclusion, a mineral is a naturally occurring inorganic solid element or compound that can be classified as either extrusive or intrusive and may consist of interlocking or bonded grains of matter. The properties of a mineral depend on its chemical composition and crystal structure. Minerals are used in many industries and are important in our daily lives.

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Answer:

a

i just had this

Answer:

A. water entering the plant. thats the one

Explanation:

Answer:

A chemical reaction is a process in which the chemical bonds of a substance are broken or rearranged. One or more substances are formed with different properties because of this chemical reaction. Examples of chemical reactions are rust, combustion, and oxidation.

The sample of pure carbon would contain approximately 2.135 x 10²⁴ carbon atoms.

The majority of carbon atoms—98.93%—have masses of 12 atomic mass units. A mass of 13.00 atomic mass units is present in 1.07% of the carbon atoms. 14.) Identify one distinction between the nuclei of carbon-12 and carbon-13 atoms in terms of the subatomic particles that can be discovered there.

First, using the atomic mass of carbon, we must determine how many moles of carbon are present in the sample:

1 mole of carbon atoms = 12.01 g of carbon atoms (atomic mass of carbon)

42.552 g of carbon atoms / 12.01 g/mol = 3.545 moles of carbon atoms

Using Avogadro's number, we can then determine how many carbon atoms are present in the sample:

Number of carbon atoms = 3.545 moles of carbon atoms x 6.022 x 10²³ atoms/mole

Number of carbon atoms = 2.135 x 10²⁴ atoms

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Answer:

NaHCO3

Explanation:

Answer:

NaHCO₃

(You can use regular searches to find formulas by the way, much faster)