Question 4(Multiple Choice Worth 2 points)
(01.05 LC)
What property of matter takes up space?
O Mass
O Temperature
O Volume
O Weight

Answer:

I think its learned behavior

Explanation:

because animals don't learn how to migrate, they just know already.

According to the bohr model of the atom, the single electron of a hydrogen atom circles the nucleus is specific allowed orbits.

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As the first blank is already filled, this first property is called the Cohesive property of water, which is what makes it possible to clump together into drops, due to their intermolecular forces.

The second blank is talking about density, and as we can see in our daily lives, ice is less dense than water, therefore in this blank liquid water will be MORE dense than ice, this is due to the hydrogen bonds and the orientation in which they are causing the molecules to push farther apart.

As we have discussed in the second blank, this 3rd blank is ICE FLOATS

Answer:

ver explicacion

Explanation:

El elemento que tiene el número atómico 56 en la tabla periódica del bario. El bario es un elemento del grupo dos.

Se combina con el cloro para formar cloruro de bario. que tiene la fórmula BaCl2 de acuerdo con la valencia de ambos elementos.

El cloruro de bario es un compuesto iónico.

The molarity of the sodium chloride solution is 0.228 M.

To determine the molarity of a solution, you need to know the number of moles of solute (in this case, sodium chloride) and the volume of the solution in liters.

The molecular weight of sodium chloride (NaCl) is 58.44 g/mol (22.99 g/mol for Na and 35.45 g/mol for Cl)

The mass of NaCl in grams is given as 3.33 g

Number of moles = mass ÷ molecular weight = 3.33 g ÷ 58.44 g/mol = 0.057 moles

converting the volume from milliliters to liters:

250 mL = 0.25 L

Now we can calculate the molarity:

Molarity (M) = moles of solute ÷ liters of solution

M = 0.057 moles ÷ 0.25 L = 0.228 M

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Answer:

Oxygen mucury carbon dioxide and platinum

Explanation:

Answer:

Explanation:

A resources available did the exam u got this  

The structure and purpose of the agricultural industry is fundamentally influenced by 'A. Resources available'. These resources can be physical (land, water, soil, climate), technological, infrastructural, or human.

The factor that influences the structure and purpose of the agricultural industry among the options provided is 'A. Resources available'. This primarily includes physical resources such as land, water, soil types, and climate. For example, the type of agriculture practiced in an area is determined by the fertility of the soil and the region's climate. If the land is fertile and the climate is suitable, high-value crops can be grown. On the other hand, in areas with less fertile soil or a harsh climate, forms of agriculture that require less intensive inputs may be preferred.

Other resources include technology, infrastructure, and human resources, which can improve efficiency and productivity. While factors B, C, and D - socioeconomic status, traditions, and culture, respectively - can influence the agricultural industry, they don't directly determine the structure and purpose of it as does the availability of resources.

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Answer:

1st one

Explanation:

Answer:

B

Explanation:

chlorine 2×3= 6 not sure

This question is providing the masses of carbon dioxide and oxygen gases at 10.0 atm as 66 g and 16 g respectively, and is asking for the partial pressure of the former which turns out to be 7.50 atm after doing the math.

Thus, we can start solving this problem with the Dalton's law approach, in order to make a relationship for the total pressure, partial pressure and mole fraction, which means we must first determine the mole fraction of carbon dioxide gas in the mixture as shown below:

\(x_{CO_2}=\frac{n_{CO_2}}{n_{CO_2}+n_{O_2}}\)

Next, we calculate the moles of both gases by dividing the grams over the molar masses:

\(n_{CO_2}=\frac{66g}{44.01g/mol} =1.50mol\\\\n_{O_2}=\frac{16g}{32g/mol} =0.5mol\)

Then, the mole fraction of carbon dioxide as the required one by plugging in the previously calculated moles:

\(x_{CO_2}=\frac{1.5}{1.5+0.5}=0.75\)

Finally, we use the definition of the Dalton's law to calculate the partial pressure of carbon dioxide gas in the binary mixture:

\(P_{CO_2}=x_{CO_2}P\\\\P_{CO_2}=0.75*10.0atm\\\\P_{CO_2}=7.50 atm\)

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Answer:

the second one-Lavoisier, Dobereiner, Newlands, Mendeleev, and Moseley

Answer:

Lavoisier, Dobereiner, Newlands, Mendeleev, and Moseley

Explanation:

Edge 2021

A first order reaction is characterized by the rate being proportional to the concentration of one reactant. In this case, AB → A + B has a 71% completion after 43 s. To find the half-life, we can use the integrated rate law for first order reactions: ln([A]₀/[A]) = kt, where [A]₀ and [A] are the initial and final concentrations, k is the rate constant, and t is time. Since the reaction is 71% complete, 29% of AB remains. Therefore, ln(1/0.29) = k(43 s). Solving for k, we get k ≈ 0.029 s⁻¹. The half-life (t₁/₂) formula for a first order reaction is t₁/₂ = 0.693/k. Substituting the value of k, we get t₁/₂ ≈ 24 s. The half-life of this reaction is approximately 24 seconds, using 2 significant figures.

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To find the percent of decrease in the number of industrial accidents from last month to this month, we need to calculate the difference between the two numbers, divide it by the original number, and then multiply by 100. The difference between last month's number of accidents (1193) and this month's number (977) is: 1193 - 977 = 216

To get the percent decrease, we divide the difference by the original number (1193) and multiply by 100: 216/1193 x 100 = 18.1% Therefore, the percent decrease in the number of industrial accidents this month is 18.1%. This means that there were 18.1% fewer accidents this month than there were last month. It's a positive trend that indicates that safety measures may be working and that people are taking the necessary precautions to avoid accidents. It's important to continue to monitor and improve safety practices to ensure that the number of industrial accidents continues to decrease over time.

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Answer: 1,334 j

Explanation:

The gravitational potential energy gained by the ball of mass 8.5 kg thrown 16 m upwards is 1334.16 J

From the question given above, the following data were obtained:

Mass (m) = 8.5 Kg

Acceleration due to gravity (g) = 9.81 ms¯²

Height (h) = 16 m

The gravitational potential energy gained by the ball can be obtained as follow:

PE = mgh

PE = 8.5 × 9.81 × 16

Therefore, the gravitational potential energy gained by the ball is 1334.16 J

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Answer:

10.0 should be your answer

Explanation:

I have had this before unless of course they changed it

Answer:

Explanation:

The first one is CrO.  The Chromium has the same charge as the oxygen so mol numbers are dropped.

The Second one is CrO2 The two oxygens have a charge of 2(-2) = -4. To balance this, the Chromium must have a charge of +4 Cr(Iv)O2

The third one is can be set up like this

Cr + 3(-2) = 0

Cr - 6 = 0

Cr = 6

Therefore the formula is Cr(vi)O3

The last one is a bit tricky. Follow this carefully. There are 2 Crs and 3Os.

The formula looks like this

2Cr + 3(-2) = 0

2Cr - 6 = 0

2Cr = 6

Cr = 3

The formula is Cr(iii)2 O3

Answer:

B. Greenhouse gases are released into the atmosphere.

I learn it in my bio class

Answer:

This atom has 80 protons and 98 neutrons.

Explanation:

All atoms are composed of a central nucleus in which there are positively charged particles, the protons, and neutrally charged particles, the neutrons, around which other negatively charged particles, called electrons, move.

The atomic number, identified with the letter Z, indicates the number of protons that are present in the nucleus of an atom. The atomic number defines the electronic configuration of the atom and allows the ordering of the different chemical elements in the periodic table.

If a substance has an atomic number of 80, this atom has 80 protons.

The mass number indicates the total number of particles in the nucleus, that is, the sum of protons and neutrons.

mass number = number of protons + number of neutrons

In this case you know that the mass number is 178 and number of protons is 80. Then

number of neutrons=mass number - number of protons

number of neutrons= 98

So this atom has 98 neutrons.

just need points lol

Phosphorus is used to build the structure of nucleic acids and certain lipids as RNA and DNA.

Phosphorus plays a vital role in the forming the structure of Nucleic acids being a component of Adenosine Tri Phosphate (ATP) which helps in the transportation of chemical energy intracellularly.

RNA and DNA are Nucleic acids which make an important component in forming the genetic material of the organism.

Nucleic acid contains many elements such as Carbon, Hydrogen and Phosphorus.

Formation of Phosphodiester bonds is responsible for formation of the structure of Nucleic acid.

Phospholipids forms a molecule as a Hydrophilic head which contains a Phosphate group.

Lipids make a component of Carbon, Hydrogen and Phosphorus.

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As water undergoes a phase change to steam.

The first phase) Liquid water.

Final phase) Steam water.

The direction of the energy is from the surroundings to the system that contains the liquid water. We can say this is endothermic, the system needs the energy to produce the process. The flow of the energy goes from the outside to the inside.

Water can absorb or release a huge amount of heat without a change in temperature because of its high specific heat. This ability of water makes it act as a 'temperature bank' in the ecosystem, because during hot seasons water is able to absorb and store a large amount of heat, and when it gets colder, the heat is gradually released, enabling the moderation of temperatures, especially around coastal cities.

The specific heat of a substance is the amount of heat that 1 gram of that substance must absorb or lose for it to change its temperature by 1 degree Celsius. Compared to other substances, water has a relatively high specific heat capacity. This is due to the presence of hydrogen bonds as energy is required to break or form hydrogen bonds.

Hydrogen bonds also give water its high heat of vaporisation. The high specific heat and heat of vaporisation of water helps to moderate Earth's climate and stabilize ocean temperatures.

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Answer:

D

Explanation:

all of them are primary socialization groups

The lenght multiply with the tall and the tichkness

Answer: Yes F is also correct.

Explanation:

From the equation, we see that for every 4 moles of pyrite consumed, 11 moles of oxygen are consumed.

So, the answer is (10.5/4)(11) = 28.875 mol

Answer:

Rotting, burning, cooking, are the three example of a chemical change.

Explanation:

burning wood

digesting food

souring milk

Sugars and starches are examples of organic compounds known as carbohydrates.

Carbohydrates are one of the main classes of organic compounds found in living organisms. They are composed of carbon, hydrogen, and oxygen atoms. Sugars and starches are both types of carbohydrates, but they differ in their structure and function.

Sugars, also known as simple carbohydrates or monosaccharides, are the basic building blocks of carbohydrates. They are small molecules with a sweet taste and are easily soluble in water. Examples of sugars include glucose, fructose, and sucrose. Sugars are an important source of energy for the body and play a vital role in various biological processes.

Starches, on the other hand, are complex carbohydrates or polysaccharides. They are made up of long chains of sugar molecules joined together.

Starches serve as a storage form of energy in plants, particularly in structures like seeds, tubers, and grains. When consumed, starches are broken down into sugars by enzymes in the body to provide a gradual release of energy.

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Answer:

Astronomers have observed their movements over time

Explanation:

Just took the test!!!

The future collision of Andromeda and milky way are known by astronomers because ; ( C ) Astronomers have observed their movements over time

Andromeda also known as messier 31 is a spiral galaxy that appears as a  milky blur when viewed from the earth and it is believed to be slightly over 2.5 million years old.

Astronomers predict that based on its movement and the movement of the Milky way there is most likely going to be a collision in future between the Andromeda and milky way.

Hence we can conclude that The future collision of Andromeda and milky way are known by astronomers because Astronomers have observed their movements over time

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Answer: The given reaction is a neutralization reaction.

Explanation:

When an acid chemically reacts with a base then it leads to the formation of salt and water.

For example, \(3KOH + H_{3}PO_{4} \rightarrow K_{3}PO_{4} + 3H_{2}O\)

Here, KOH is a the base and \(H_{3}PO_{4}\) is an acid which on chemical reaction with each other leads to the formation of salt \((K_{3}PO_{4})\) and water \((H_{2}O)\).

Thus, we can conclude that the given reaction is a neutralization reaction.