8. Fill in the table below with the maximum number of complete race cars that can be buike from each container of parts (A-E), and indicate which part limits the number of cars that can be built. Divide the work evenly among group members. Space is provided below the table for each group member to show their work. Have each group member describe to the group how they determined the maximum number of complete cars for their container. Container A from Model 2 is already completed as an example.
1 B + 3 Cy + 4Tr + 1 E - 1 car

Answer:

142.218

Explanation:

The ideal gas law is PV=nRT

P= pressure in kpa

V= volume

n= number of moles

R= always equals 8.31

T= temperature in kelvins

P= (1.25)(101.3)= 126.625kPa

V= 14L

n= 1.50 mol

R= 8.31

T= ?

Multiply (126.625)(14) then divide that by (1.5)(8.31) to get your temperature in kelvins

Answer: Certain physical constants (e.g., melting point, boiling point, density, refractivity, solubility) can be found in the literature for many compounds, whereas others (e.g., specific rotation) are characteristic of different groups of compounds and are known for almost all of them.

Explanation:

Pesticides have the potential to pollute lawn, water, and other vegetation. Pesticides can be poisonous to a variety of different organisms in addition to insects and weeds, such as birds, fish, helpful insects, and non-target plants.

Pesticides release a variety of pollutants, including volatile organic compounds and hazardous air pollutants (HAPs) (VOC). These contaminants may cause health issues that have an impact on the neighbourhood, the community, and the locals.

Emissions from coal-fired power plants, businesses, and refineries, as well as those from automobiles, trucks, and buses, are the main sources of harmful air pollution outside. Hazardous air pollutants from sources like solvents, asbestos-containing building materials, and cigarette smoke can also be found in indoor air.

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The molarity of the solution : 1.2 M

Molarity shows the number of moles of solute in every 1 liter of solute or mmol in each ml of solution

\(\large{\boxed {\bold {M ~ = ~ \frac {n} {V}}}\)

Where

M = Molarity

n = Number of moles of solute

V = Volume of solution

mass of NaCl=35 g

Volume of solution = 0.5 L

mol NaCl(MW=58.44 g/mol) :

\(\tt mol=\dfrac{mass}{MW}\\\\mol=\dfrac{35}{58.44}\\\\mol=0.6\)

The molarity :

\(\tt M=\dfrac{0.6}{0.5}=1.2\)

Answer:

Combination reaction is taken during this reaction

The amine that has the given spectroscopic data is N,N-dimethylisopropylamine. To identify the amine, we will analyze the provided 1H NMR and 13C NMR data.

1H NMR:
- 1.15 ppm (9H singlet): This indicates three methyl groups (\(CH_{3}\)) present in the molecule, each contributing three protons.
- 1.41 ppm (2H broad singlet): This indicates a methylene group (\(CH_{2}\)) attached to a nitrogen atom (amine group).
13C NMR:
- 32.6 ppm: This corresponds to a carbon that is attached to the nitrogen atom (amine) and is part of the methylene group (\(CH_{2}-N\)).
- 47.4 ppm: This corresponds to the carbon that has three methyl groups (\(CH_{3}\)) attached to it.
Taking these pieces of information together, we can deduce the structure of the amine: N,N-dimethylisopropylamine. This molecule has one \(CH_{2}-N\) group, with the nitrogen atom bonded to two methyl groups and a central carbon atom connected to three methyl groups.
Based on the provided 1H NMR and 13C NMR spectroscopic data, the amine in question is N,N-dimethylisopropylamine.

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In this case, among the list of components given, the abiotic factors are water, rock, soil, and sun.

An abiotic factor is a non-living part of an ecosystem that shapes its environment.

Biotic and abiotic factors make up a community via interaction.

Biotic factors are considered living things (having "life") while abiotic factors are simply non-living things.

Hence, in this case, among the list of components given, the abiotic factors are water, rock, soil, sun

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\( \begin{gathered}\\ \underline{\boxed{\large\leadsto\frak\red{ Answer :- }}} \\ \end{gathered}\)

What is an abiotic factor?

♠ Among the list of components given, the abiotic factors are water, rock, soil, sun

▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬

Answer:

B

Explanation:

Edge 2023

For the reaction, we have that;

2NaOH + H2SO4 -----> Na2SO4 + 2H2O

A balanced reaction equation is a chemical equation that accurately represents the reactants and products in a chemical reaction, where the number of atoms of each element on the reactant side is equal to the number of atoms of that element on the product side.

In other words, a balanced equation follows the law of conservation of mass, which states that the total mass of the reactants must be equal to the total mass of the products in a chemical reaction.

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Aluminum hydroxide + Nitric acid → Aluminum nitrate + Water
Net ionic equation: Al(OH)₃ + HNO₃ → Al(NO₃)₃ + H₂O.

Net ionic equation is a chemical equation that shows only the species that are directly involved in the reaction. It is a molecular equation that has had all of the spectator ions, or ions that are not directly involved in the reaction, removed. Net ionic equations are useful because they help to show the actual chemical change that is occurring in a reaction. They also help to identify the products of a reaction, which can inform the reactants required to reach the desired end product. Net ionic equations are also important for predicting the equilibrium of a reaction and for understanding how changes in concentration, temperature, and pressure can affect the reaction.

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Answer:

0.185 moles of AlN

Explanation:

The equation is:

2Al  +  N₂  →  2AlN

This reaction indicates that 2 mol of aluminum can react to 1 mol of nitrogen to produce 2 moles of aluminum nitride.

We convert the aluminum's mass to moles

5 g/ 26.98 g/mol = 0.185 moles.

2 moles of Al are needed to produce 2 moles of AlN

so, ratio is 1:1

In conclussion we say:

0.185 moles of Al, must produce 0.185 moles of AlN

Answer: Q

=

−

53

,

796.6

J

Explanation is right here instead

The equation for heat is

Q

=

m

(

t

f

−

t

i

)

C

p

Q = heat in Joules

m = mass in grams

t

f

= final temp

t

i

= initial temp

C

p

= Specific Heat Capacity

For this problem

Q

=

?

?

?

m

=

275

g

t

f

=

38.4

o

C

t

i

=

85.2

o

C

C

p

=

4.18

j

g

o

C

Q

=

275

g

(

38.4

o

C

−

85.2

o

C

)

4.18

J

g

o

C

Q

=

275

g

(

−

46.8

o

C

)

)

4.18

J

g

o

C

Q

=

−

53

,

796.6

J

The negative Joule value means heat is being lost in an exothermic reaction.

Explanation:

Explanation:

Noble gases are odorless, colorless, nonflammable, and monotonic gases that have low chemical reactivity. The full valence electron shells of these atoms make noble gases extremely stable and unlikely to form chemical bonds because they have little tendency to gain or lose electrons. So, noble gases cannot participate in ionic bond formation.

Answer:

Because they can't!

Explanation:

For ionic bonds, ions are needed to be made which are made to form a stable outer shell octet of electrons of each atom to gain atomic stability. The noble gases don't need to form ions since they already have the octet of electrons in their outer shells. If they don't form ions, they don't form ionic bonds too.

This is one of the reasons why noble gases are unreactive.

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Answer:

The answer is option A

Colorful feathers

Hope this helps you

Answer:

A)

Explanation:

Molar mass is the mass of one mole of a substance. Therefore, the molar mass of trans-9-(2-phenylmethyl)anthracene is 356.44 g/mol.

The substance in question is trans-9-(2-phenylethenyl)anthracene. This organic compound can be represented as C28H20. The molar mass of trans-9-(2-phenylethenyl)anthracene is therefore calculated as follows:Step 1Determine the molar mass of carbon (C) and hydrogen (H). The atomic mass of carbon is 12.01 g/mol, and the atomic mass of hydrogen is 1.008 g/mol. Step 2Calculate the total molar mass of carbon and hydrogen in the compound. Multiply the atomic mass of carbon by the number of carbon atoms in the compound (28), and multiply the atomic mass of hydrogen by the number of hydrogen atoms in the compound (20).Step 3Add the molar masses of carbon and hydrogen to get the total molar mass of the compound. 12.01 × 28 + 1.008 × 20 = 336.28 + 20.16 = 356.44 g/molTherefore, the molar mass of trans-9-(2-phenylethenyl)anthracene is 356.44 g/mol.

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Answer:

14cm

Explanation:

s x s=area

s²=200cm²

s=14.1421356237cm

s=14cm

The initial volume of the container can be calculated using the ideal gas formula, PV = nRT, where P is pressure, V is volume, n is number of moles, R is gas constant, and T is temperature:

The best illustration of Avogadro's law is when a balloon is inflated. The volume of the balloon grows as you add moles of gas. Similar to how a balloon loses gas and its volume as you collapse it

According to Avogadro's law, all gases with an identical volume and the same temperature and pressure have an equal number of molecules. The volume of an ideal gas at a certain mass.

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Answer: the longest a virus that can be kept on a plastic bag is a few hours to a couple of days.

Explanation: hope that helped!(:

Because sodium has a valency of 1, the mass equivalent of a photon is 3.37 1036 kg. Emissions with a wavelength of 446 nm give sodium flames their distinctive yellow hue.

In order to answer this issue, we must first determine the photon's energy. We then use an equation to convert that energy to mass energy. We can get the mass equivalent of a photon, as requested in the question, using mass equivalent.

The special relativity theory of Einstein led to the equality of mass and energy. Which merely means that energy can be transformed into mass and the reverse.

E=h×c/λ

E = energy of photon

h = planck's constant =6.626×10^−34Js

c = speed of light = 3×10^8m/s

λ= Wavelength of photon = 589nm=598×10^−9m

E=3.37×10^−19J

From mass energy equivalence we know,

E=mc^2

M=3.37×10^−36kg

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Here, the mass of the tennis ball cannot measure using a scale. Hence, Julia made a mistake in her statement about measurement.

Tennis ball is likely be spherical in shape and it volume can be calculated using the equation.

v = 4/3 πr³

Here, r is the radius of the object. If the radius is taken in cm, then the unit of volume is cm³.

Therefore, by measuring the radius, we can find its volume. Thus first statement is true. Ruler or a scale can also be used to measure the radius and thereby volume.

Now, mass of a substance can only be measured using weighing balance. The weight of the ball is calculated from the mass, hence if the second statement is wrong, third statement also goes wrong.

Therefore, Julia made the mistake in her statement about measurement.

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Your question is incomplete. But your complete question probably was:

Four students made statements about a tennis ball they were using in a lab. Which student made a mistake in her statement? Irma Julia Grace Masha

Answer:

Julia

Explanation:

3 g/mL is the density in grams per millititer to three significant figures.

To express the density of a cube of butter in grams per milliliter, we need to convert the weight from pounds to grams and the volume from cubic inches to milliliters.

1 pound is approximately equal to 453.592 grams, so the weight of the cube of butter in grams would be:
0.260 lb * 453.592 g/lb = 117.81992 g (rounded to three significant figures as 118 g)

1 cubic inch is equal to approximately 16.387 milliliters, so the volume of the cube of butter in milliliters would be:
\(1303 cubic inches * 16.387 mL/in^3 = 21,365.861 mL\) (rounded to three significant figures as 21,400 mL)

Therefore, the density of the cube of butter would be:
Density = Mass / Volume

= 118 g / 21,400 mL

= 0.00551 g/mL (rounded to three significant figures as 0.005 g/mL)

For the gem, we already have the mass as 600 g and the volume as 200 mL.

Therefore, the density of the gem would be:
Density = Mass / Volume

= 600 g / 200 mL

= 3 g/mL (rounded to three significant figures)

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Sirloin steak typically has the lowest water content and the correct option is option 4.

Meat, being a protein-rich food, generally contains a lower percentage of water compared to fruits, vegetables, and bread. While lettuce and tomatoes are primarily composed of water, with high water content contributing to their crispness and juiciness, whole grain bread also retains a significant amount of moisture.

On the other hand, sirloin steak consists mostly of muscle tissue, which contains less water. However, it is important to note that the exact water content can vary depending on factors such as the specific cut of meat, cooking method, and degree of doneness.

Thus, the ideal selection is option 4.

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The purpose of a control in a scientific investigation is to: - Serve as a baseline or reference point for comparison with the experimental group, ensure that any observed effects are actually due to the experimental manipulation and not to other factors and increase the validity and reliability of the results by reducing the likelihood of confounding variables.

The purpose of a control in a scientific investigation is to:
1. Provide a baseline for comparison: Controls allow you to compare the results of the experimental group to a group that has not experienced any changes, helping you to determine if the independent variable is responsible for the observed effects.
2. Minimise the impact of confounding variables: By having a control group, you can better account for variables that may influence the results, ensuring that the observed effects are due to the independent variable rather than other factors.
3. Increase the reliability and validity of the study: Controls help to strengthen the study's design, making the findings more reliable and valid.
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The noble gas with an atomic mass less than gold, but more than silver, is platinum. Noble gases are found in small amount in earth atmosphere.

The noble gases are a group of chemical elements that share several characteristics. They are all monatomic, odorless, and colorless gases with relatively little chemical reactivity under normal conditions. Helium, neon, argon, krypton, xenon, and radioactive radon are the six types of noble gases that are found in nature.

These gases don't receive, lose, or share electrons, making them inert or unreactive. They are also referred to as noble gases due to their rarity in the atmosphere of the earth.

Thus, The noble gas with an atomic mass less than gold, but more than silver, is platinum.

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Answer:

It tells about the data for each line graph is plotted.

Explanation:

Answer:

It can describe what the line graph is measuring and how it is measuring it