group of students is investigating whether the force of friction depends on the nature of the surfaces in contact. The students push two pieces of wood each with the same force on a table. One piece of wood is smooth and the other is rough. The distance traveled by each piece of wood is shown.

Experimental Observations
Student 1 Student 2 Student 3 Student 4
Distance traveled by smooth piece of wood 20 cm 18 cm 16 cm 19 cm
Distance traveled by rough piece of wood 15 cm 12 cm 10 cm 11 cm
What was the outcome variable (dependent variable) in this experiment?

Group of answer choices

Distance traveled

Smooth wood

Rough wood

Number of students

Answer:

Explanation:

Gravity pulls the balls down the ramp, and the force of gravity is bigger on larger-mass objects. The extra force on the bigger ball means that it has more energy when it gets to the bottom of the ramp and consequently travels more before stopping.

Answer:

False

Explanation:

Water vapour exists in gas phase!

Answer:

The percentage of IF₅ (by mole) in the final product mixture will be 50%. This is determined by the stoichiometry of the reaction, the given molar mass of the reactants, and the ideal gas law.

Explanation:

The energy of combustion for one mole of butane to be approximately 2888.81 kJ/mol.

To calculate the energy of combustion for one mole of butane (C4H10), we need to use the information provided and apply the principle of calorimetry.

First, we need to convert the mass of the butane sample from grams to moles. The molar mass of butane (C4H10) can be calculated as follows:

C: 12.01 g/mol

H: 1.01 g/mol

Molar mass of C4H10 = (12.01 * 4) + (1.01 * 10) = 58.12 g/mol

Next, we calculate the moles of butane in the sample:

moles of butane = mass of butane sample / molar mass of butane

moles of butane = 0.367 g / 58.12 g/mol ≈ 0.00631 mol

Now, we can calculate the heat released by the combustion of the butane sample using the equation:

q = C * ΔT

where q is the heat released, C is the heat capacity of the calorimeter, and ΔT is the change in temperature.

Given that the heat capacity of the bomb calorimeter is 2.36 kJ/°C and the change in temperature is 7.73 °C, we can substitute these values into the equation:

q = (2.36 kJ/°C) * 7.73 °C = 18.2078 kJ

Since the heat released by the combustion of the butane sample is equal to the heat absorbed by the calorimeter, we can equate this value to the energy of combustion for one mole of butane.

Energy of combustion for one mole of butane = q / moles of butane

Energy of combustion for one mole of butane = 18.2078 kJ / 0.00631 mol ≈ 2888.81 kJ/mol

Therefore, the energy of combustion for one mole of butane is approximately 2888.81 kJ/mol.

In conclusion, by applying the principles of calorimetry and using the given data, we have calculated the energy of combustion for one mole of butane to be approximately 2888.81 kJ/mol.

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Answer:

Lithium has more electrons than Hydrogen

Explanation:

Lithium has 2,1 electrons
Hydrogen has 1 electrons

The most suitable choice is "likely" to convey the doubt or uncertainty regarding the boss's willingness to agree. Option B)

Based on the given context, the word that best fits the sentence is "likely."

The sentence implies that the speaker doubts the boss's willingness to agree with something. In this case, "likely" expresses the probability or possibility of the boss agreeing. It suggests that the boss is not expected to be receptive or open to the idea.

"Probable" implies a higher degree of certainty or likelihood, which may not be suitable in this context since the sentence indicates skepticism about the boss's agreement.

"Suitable" means appropriate or fitting, but it does not convey the sense of agreement or willingness.

"Talkative" refers to someone who is inclined to talk a lot, which is unrelated to the boss's agreement.

Therefore, the most suitable choice is "likely" to convey the doubt or uncertainty regarding the boss's willingness to agree. Hence option B) is correct.

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Answer:

answer

Explanation:

An object that has a small mass and an object that has a large mass have the same momentum. ... Since the kinetic energy of an object is momentum times of speed. Therefore, for the same momentum, the mass of higher speed will have more energy i.e. the smaller mass.

Answer:

\(\huge\boxed{\sf M = 0.06\ M}\)

Explanation:

No. of moles = n = 0.03 mol

Volume = v = 500 ml = 0.5 L

Molarity = M = ?

M = n / v

Put the given data in the above formula.

M = 0.03 / 0.5

\(\rule[225]{225}{2}\)

Explanation:

Boyle's Law

Answer:

B.) trigonal bipyramidal

Explanation:

A.) is incorrect. In octahedral molecules, the central atom is bonded to six other atoms.

B.) is correct. In trigonal bipyramidal structures, the central atom is bonded to five other atoms.

C.) is incorrect. In tetrahedral molecules, the central atom is bonded to four other atoms.

D.) is incorrect. There is not such thing as a pyramidal molecular shape. This term is most likely referring to the shape, trigonal pyramidal. However, this is still incorrect. In trigonal pyramidal molecules, the central atom is bonded to three other atoms and a lone pair of electrons.

Answer:

1H2S + 2Ag --> 1Ag2S + 1H2

Explanation:

1H2S + 2Ag --> 1Ag2S + 1H2

You only have to make sure to have the same amount of each element in each side of your chemical equation

The wavelength of the radiation emitted by the argon ion laser is \(4.854 * 10^-7 m\).

Wavelength is a property of any type of wave that refers to the distance between two adjacent points on the wave that is in phase, i.e., at the same point in their respective cycles. It is usually denoted by the Greek letter lambda (λ) and is measured in units of length, such as meters or nanometers.

The energy carried by the photon (E) is related to the wavelength (\(\lambda\)) through the following equation:

\(E=hc/\lambda\); where 'h' is the Plank's Constant and 'c' is the speed of light which is \(3* 10^{-7} m/s\).

We can say that

\(\lambda - hc/E\)

Now after substituting the given values, we get:

\(\lambda = (6.626 * 10^{-34} J.s * 3.00 * 10^8 m/s) / (4.071 * 10^{-19} J)\\\lambda = 4.854 * 10^-7 m\)

Therefore the wavelength of the radiation emitted by the argon ion laser is \(4.854 * 10^-7 m\).

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Answer:

See explanation

Explanation:

Let us see what happens when each solution is mixed;

a) AlCl3(aq) + K3PO4(aq) ------> 3KCl(aq) + AlPO4(s)

A precipitate is formed here

b) RbCO3(aq) + NaCl(aq) -------> This is an impossible reaction hence no solid precipitate is formed here

c) MnCl2(aq) + Na2CO3(aq) → 2NaCl(aq) + MnCO3(s)

A precipitate is formed.

d) K2S(aq) + 2NH4Cl(aq) ------> 2KCl(aq) + (NH4)2S(aq)

No solid precipitate is formed

e) CaCl2(aq) + (NH4)2CO3(aq) → CaCO3(s) + 2NH4Cl(aq)

A solid precipitate is formed

Answer:

They are called coefficients.

Answer: Hợp chất CTHH 0 °C 10 °C 20 °C 30 °C 40 °C 50 °C 70 °C

Actini(III) hydroxide Ac(OH)3   0,0022    

Amonia NH3 1176 900 702 565 428 333 188

Amoni azua NH4N3 16  25,3  37,1  

View 42 more rows  

                    hehe

Answer: almost 7g

Explanation: 25 grams of carbon dioxide contains 6.818 grams of carbon.

Answer:

HS(-)

HCOO(-)

SO3(2-)

SO4(2-)

S(2-)

NO2(-)

CN(-)

Explanation:

The parenthesis are the charges of the compounds. When an acid is introduced in a base, it dissociates its Hydrogens giving protons to the base. In this case, if you remove one hydrogen of a compound, you will reduce the charge of a compound since basically you're removing a positive charge from a compound. If you need to, I can explain how the thing of the charges work.

In fact, the definition of a conjugate base is a compound created when the original (an acid) compound dissacioate an atom of hydrogen (a proton) in a base.

Long-range order is best found in crystalline solids. Crystalline solids are characterized by a highly ordered arrangement of atoms or molecules in a repeating pattern called a crystal lattice. Option 2)

Long-range order is best found in crystalline solids. Crystalline solids are characterized by a highly ordered arrangement of atoms or molecules in a repeating pattern called a crystal lattice. The arrangement of the particles in a crystalline solid extends over long distances, resulting in a well-defined and repetitive structure.

In contrast, amorphous solids lack long-range order. They do not possess a well-defined crystal lattice or a regular arrangement of particles. The atoms or molecules in amorphous solids are arranged in a more random and disordered manner, leading to a lack of long-range order.

Thermal plasmas and nonthermal plasmas, on the other hand, are states of matter where the atoms or molecules are highly ionized, resulting in the formation of charged particles or ions. While plasmas can exhibit certain levels of order, they do not possess the same level of long-range order as crystalline solids.

Therefore, crystalline solids are the primary location where long-range order is typically found. Option 2)

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Note Complete Question

Which of the following best identifies where long-range order would be found?

1) in amorphous solids

2) in crystalline solids

3) in thermal plasmas

4) in nonthermal plasmas

OPTION B. Long-range order is most commonly found in crystalline solids, where atoms or molecules are arranged in a well-defined, consistent pattern. Amorphous solids and plasmas do not showcase this characteristic.

Long-range order pertains to the organization and regularity of constituents over large scale distances. It's a term often associated with the structure of crystalline solids. This is due to the fact that their atoms or molecules are arranged in a well-defined and repeated pattern extending in all three spatial dimensions over the length of the solid. On the contrary, an amorphous solid does not have a long-range order, instead, its structure is only ordered on a short range. Plasmas, both thermal or nonthermal, are an ionized gas and do not exhibit long-range order, primarily due to their high level of kinetic energy and lack of fixed positions for particles.

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This is True, Social and emotional development is a developmental domain.

What is developmental domain?

The term "domain" when applied to human development describes particular facets of development and change. Language, social-emotional, cognitive, and physical development are the four basic areas of development.

Social-Emotional Domain is defined by forming relationships and attachments. A child's developing knowledge of and ability to manage their emotions is part of the social-emotional domain. Additionally, they start to recognize other people's emotions, become more cooperative, exhibit empathy, and engage in moral reasoning.

This category of developmental domains covers forming relationships with other people and learning social skills. Children gain skills including sharing, taking turns, and accepting others' differences. They also form a variety of relationships, including ones with their parents, siblings, peers, teachers, coaches, and members of the community.

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Temperature of the gas is approximately 570.4 K when there are 1.9 moles of gas at a pressure of 5 ATM and a volume of 5.0 × \(10^{4}\) mL.

To determine the temperature of the gas, we can use the ideal gas law equation, which states that the pressure of a gas is directly proportional to its temperature, volume, and the number of moles of gas. The equation is given by:

PV = nRT

where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature.

In this case, we are given the pressure (P = 5 ATM), volume (V = 5.0 × 10^4 mL), and number of moles (n = 1.9 moles) of the gas. We can rearrange the ideal gas law equation to solve for temperature:

T = PV / (nR)

Substituting the given values and the value of the ideal gas constant (R = 0.0821 L·atm/(mol·K)), we can calculate the temperature:

T = (5 ATM) × (5.0 × \(10^{4}\) mL) / (1.9 moles × 0.0821 L·atm/(mol·K))

After performing the calculations, we find that the temperature of the gas is approximately 570.4 K.

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Answer: 0.27 M

Explanation:

c1V1=c2V2

c1=6.0 M;V1=45.0 mL

c2=?;V2=1.0 L=1000 mL

c2=(c1V1)/V2

c2=((6.0)(45.0))/1000

c2=0.27 M

Answer:

gguhg

Explanation:

no te es caso drama me están muy una las y y que las te

Subaquatic soil can be classified as sediment or soil based on its geological properties and formation processes.

Sediment refers to any material that is transported and deposited by water, wind, ice, or gravity. Sediments can be composed of various materials, such as minerals, rocks, organic matter, and even human-made debris.

Sediments can accumulate in different environments, such as rivers, lakes, oceans, and deserts, and can be deposited in layers over time.

Subaquatic soil can be classified as sediment or soil based on its geological properties and formation processes. If it has primarily formed through sediment deposition, it is more appropriate to classify it as sediment.

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Answer:

The Barbary sheep, also known as the aoudad, is a unique species that's adapted to life in the rugged terrain of North Africa. These sheep have a thick coat of fur that allows them to stay warm in the harsh mountain climate. They also have strong legs that help them climb steep inclines and rocky outcroppings.

As an animal, the Barbary sheep is of scientific interest for a variety of reasons. Here are a few examples:

Habitat and ecology: Barbary sheep have adapted to a range of habitats, from arid deserts to mountainous terrain. They are well-suited to hot and dry climates and have a range of adaptations that help them survive in these conditions. Studying these adaptations can help scientists understand how animals cope with extreme environments.

Social behavior: Barbary sheep are social animals that live in groups called bands. They have a hierarchical social structure, with dominant males leading the group and mating with multiple females. Studying this social behavior can provide insights into the evolution of social systems and the factors that influence reproductive success.

Reproductive biology: Barbary sheep are polygynous, meaning that males mate with multiple females. They have a seasonal breeding pattern, with mating occurring in the fall and early winter. Studying the reproductive biology of Barbary sheep can help scientists understand the factors that influence reproductive success and the evolution of mating systems.

Genetics: The Barbary sheep is of interest to geneticists because it is a species that has undergone recent divergence. There are several subspecies of Barbary sheep, each with distinct genetic traits. Studying the genetic diversity of Barbary sheep populations can provide insights into the factors that drive speciation and the genetic basis of adaptations.

In terms of their biology, Barbary sheep are part of the Bovidae family and are closely related to goats and sheep. They have a complex digestive system that allows them to extract nutrients from tough plant material that other animals can't digest. They are also highly adaptable and can survive in a variety of habitats, from dry deserts to snowy mountain peaks.

In order to study Barbary sheep, scientists use a variety of methods such as field observations, tracking, and genetic analysis. By studying these animals, researchers can gain a better understanding of their behavior, ecology, and genetics. This knowledge can then be used to develop conservation strategies and management plans to help ensure the survival of this unique species.

Explanation: