How many liters of water vapor can be produced if 8.9 liters of methane gas (CH4) are combusted, if all measurements are taken at the same temperature and pressure? Show all of the work used to solve this problem. CH4 (g) + 2O2 (g) yields CO2 (g) + 2H2O (g)

If Ray completely separates a mixture, he will be left with pure substances.

Mixtures are of two types: homogeneous and heterogeneous.

Homogeneous mixtures are made up of pure substances in definite proportion with uniform composition.

Heterogeneous mixtures are made up of pure substances in varying proportion.

Although  mixtures are of two types essentially all mixtures are made up of pure substances.

Answer: two or more pure substances

Explanation: Completely separating a mixture of different substances will leave Ray with two or more pure substances because all mixtures are made of two or more pure substances blended together.

Pure substances always have some properties that are different from other pure substances.

It would collapse and the ocean would be destroyed.

Subduction occurs when an oceanic plate collides with a continental plate, resulting in an ocean trench, frequent earthquakes, and a line of coastal volcanoes. The earthquakes originate from the Wadati-Benioff zone, indicating the oceanic plate is sinking into the mantle.

When an oceanic plate meets a continental plate, a process known as subduction takes place. This is because the denser oceanic plate is forced to dive beneath the lighter continental plate. When subduction occurs, several geologic events can result, including:

The formation of a deep ocean trench near the subducting plate.

A high frequency of earthquakes in the region due to the movement of the plates.

The creation of magma which can lead to volcanic activity, resulting in a line of volcanoes parallel to the coastline.

The area where these earthquakes occur, the Wadati-Benioff zone, demonstrates that the oceanic plate is gradually sinking into the mantle, which can be as deep as 600 kilometers beneath the surface.

Yes, it is oil/vinegar salad dressing

The correct answer is 'Replicable results and empirical data'.

For science to be reliable, the scientific method must be replicable and the data must be empirical.

When scientists publish their work they write enough data so that scientists all over the world can replicate their experiment and get same results.

Also the scientific method is based on empirical data which is based on direct observation of the world and is contrary to hypothesis that do not rely on facts.

Answer:

B. calcium has electrons in more energy levels than magnesium

Explanation:

atoms are made of three types of subatomic particles - electrons, protons and neutrons.

Neutrons and protons reside in the nucleus of the atom and electrons reside in energy shells

electronic configuration for both Ca and Mg are as follows

Mg - 2,8,2

Ca - 2,8,8,2

outermost energy shell of Mg with electrons is the third energy level

whereas outermost energy shell of Ca with electrons is the fourth energy shell

therefore Ca has a larger atomic radius than Mg as it has one more energy shell than Mg in which electrons reside

The statement that best explains why calcium has a larger atomic radius than magnesium is Calcium's third energy level contains more electrons than magnesium. Option D

Atomic radius means how far away the outermost electron shell of an atom is from its nucleus. In the periodic table, the size of an atom usually gets bigger when you go down a group and gets smaller when you go across a row.

In this situation, calcium (Ca) and magnesium (Mg) are in the same group (Group 2) on the periodic table. This group is also called the alkaline earth metals. As you go down this group, the size of the atoms gets bigger. This trend happens because each next element has one more energy level than the element above it.

Calcium has one more energy level than magnesium because it is below magnesium in the same group. The extra energy level in calcium makes its outermost electrons further away from the nucleus compared to the electrons in magnesium. This means that calcium is bigger than magnesium.

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Answer :

During diffusion, when the concentration of the molecules on both sides of the membrane is the same, the molecules will continue to move across the membrane in both the direction.

Answer 3 : It allows single-celled organism to reproduce, and other organism to repair damage tissues and grow.

Answer 4: The nucleus is an organelle that is surrounded by the cytoplasm, a jelly-like fluid.

Explanation :

Diffusion : It is a process where liquid moves from higher concentration to the lower concentration through permeable membrane.

When the concentration of the molecules on both sides of the membrane is same and the membrane is permeable membrane then diffusion will occur and the molecules will moves continuously across the membrane in both the direction.

Answer 3 :

Mitosis : It is a process of cell division. In this process, nucleus divides into two daughter cell and each daughter cell contains same number of chromosomes as present in parent nucleus.

The main purpose of the mitosis is to repair damaged tissues and growth.

Answer 4 :

Nucleus is a type of cell organelle. It is present in both animal and plant cells and it is the brain of the cell. It is present only in eukaryotic cell.

Nucleus is an organelle which is surrounded by the cell membrane which protects its from the other cells.

Cytoplasm is a jelly-like fluid which is present in the cell membrane which is made up of salt and water.

This response provides answers to 4 biology questions related to osmosis, diffusion, mitosis, and the relationship between cytoplasm and the nucleus.

When water is diffused across a selectively permeable membrane, scientists refer to that as osmosis.

During diffusion, when the concentration of molecules on both sides of the membrane is the same, the molecules will continue to move across the membrane in both directions.

Mitosis needs to occur as it allows organisms to reproduce and repair tissues by creating new cells with half of the DNA that was found in the parent cell.

The relationship between the cytoplasm and the nucleus is that the nucleus is an organelle that is surrounded by the cytoplasm, which is a jelly-like fluid.

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Hydrogen bonds are intermolecular (“between-molecule”) bonds, rather than intramolecular (“within-molecule”) bonds. They occur not only in water but in other polar molecules in which positive hydrogen atoms are attracted to negative atoms in nearby molecules. Hydrogen bonds are relatively weaker as chemical bonds. For example, they are much weaker than the bonds holding atoms together within molecules of covalent compounds.

Hydrogen bond is weaker than ionic and covalent bonds. Example: Water molecules are held to each other by intermolecular forces of attraction. Covalent bonds are the strongest bonds, meaning that atoms are actually held together by the physical sharing of electrons.

C. Positive acceleration describes an increase in speed; negative acceleration describes a decrease in speed. ( I put A & it was not the correct answer, the answer was C )

Answer:

Positive acceleration describes an increase in speed; negative acceleration describes a decrease in speed

Answer:

the answer is static friction.

Answer:

Static Friction

1. According to the periodic law, both chemical and physical elements and their properties are periodic functions of their atomic numbers, thus recurring in a predictable periodical pattern

2. Mendeleev knew that some certain elements existed, he expected that in the future, the gaps would be filled because at the time, they had not been discovered yet.

3. The properties of metalloids are boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te), polonium (Po) and astatine (At). They are found between metals and non-metals on the periodic table. They appear in a stairstep-like pattern.

Answer: Mix of answers below

Explanation:

Final Answer:

The experiment aimed to investigate the impact of environmental factors on plant growth. The results indicated a significant correlation between sunlight exposure and the growth rate of the plants.

Explanation:

In this experiment, the focus was on understanding how environmental factors influence plant growth.

The results revealed a noteworthy relationship between the amount of sunlight the plants received and their growth rate.

This finding aligns with established knowledge in botany, highlighting the crucial role sunlight plays in photosynthesis, a key process driving plant development.

The experimental design likely controlled variables such as soil quality and water supply to isolate the impact of sunlight.

This approach enhances the validity of the results, allowing for a more accurate assessment of the specific influence of sunlight on plant growth.

The observed correlation underscores the importance of considering environmental factors in agricultural and ecological contexts, emphasizing the need for appropriate sunlight exposure to optimize plant productivity.

In conclusion, the experiment's results contribute valuable insights into the interplay between environmental factors and plant growth, with sunlight emerging as a key determinant.

Understanding these relationships is vital for informed decision-making in agriculture and ecosystem management.

To make an observation, we need to record all available information, which could include tactile, audible, and visual data.

The correct answer to your question, 'To make an observation we need to record ______ information. Tactile, Audible, Visual, All of the above', is All of the above. This is because when making an observation, it's important to use all our senses to gather as much information as possible. For instance, tactile information can provide data about texture and temperature, audible information tells us about sounds and volume, and visual information can provide data about colors, shapes, and sizes.

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B) the creation of South Sudan.

South Sudan, officially the Republic of South Sudan, is a landlocked country in northeastern Africa that gained its independence from Sudan in 2011.

In addition to moral reasons, there are economic ways in which the U.S. benefits from foreign aid to South Sudan. Studies have shown that the U.S. is one of the highest donors to South Sudan, donating $887.5 million in 2017.

Another way in which the U.S. benefits from foreign aid to South Sudan is through security.

The answer is  B) The creation of south sudan

Answer:

d

Explanation:

use baby oil...it helps get the oil paint off.  I think it is hard because it is heavier than water and it sticks to your skin and also the water and oil don't mix like other things so it makes it alot harder. use baby oil and wash.

Answer is: If the compound were a true hydrate it would form aqueous solutions of identical color both before and after heating.

For example, copper(II) sulfate pentahydrate (CuSO₄·5H₂O) form aqueous solutions of bright blue both before and after heating.

Hydrate is a substance that contains water or its constituent elements.

The difference in color shows that there has been a chemical change on heating so the water formed could be produced in that chemical change. Alternatively the material could still be a true hydrate and the anhydrous material may have undergone a change on heating so you can't really conclude anything.

Hello Paige,

what are elementary particles the make up protons and nuetrons

Answer - Electrons and Quarks

they are made by of two types of elementary particles

electrons and quarks

quetion answered by

 (jacemorris04)

Answer;

D. Formation of NADPH

Explanation;

During the process of photosynthesis light is converted to chemical energy.

During stage 1, Excited electrons that leave the chlorophyll pigments in stage 1 are used. Excited electrons are passed through proteins in the thylakoid membrane like a ball being passed from person to person. H2o molecules split and turn into H+ molecules and O2 gas, then pigments take the electrons from the split water molecules and release O2 into the atmosphere.

During stage 2; electrons from 1st cluster pump H+ ions into the thylakoid membrane through the hydrogen ion pump (protein membrane. Higher concentration of H+ ions inside the thylakoid membrane compared to outside. H+ ions diffuse out of the thylakoid throught the ATP synthase (enzyme in membrane). ATP synthase catalyzes the reaction ADP + P ---->ATP.

Stage 2; Excited electrons + H+ ions + NADP+= NADPH

All the alkali metals react vigorously with cold water. In each reaction, hydrogen gas is given off and the metal hydroxide is produced. The speed and violence of the reaction increases as you go down the group. HOPE THIS HELPS!! :)

Which of these measurements is expressed as three significant figures?  

C. 4.20 g

protons= 53

electrons= 54

neutrons= 55

Hey There!

At neutralisation moles of H⁺ from HCl  = moles of OH⁻ from Ca(OH)2  so :

0.204 * 42.8 / 1000  => 0.0087312 moles

Moles of Ca(OH)2 :

2 HCl + Ca(OH)2 = CaCl2 + 2 H2O

0.0087312 / 2 => 0.0043656 moles (  since each Ca(OH)2 ives 2 OH⁻ ions )

Therefore:

Molar mass Ca(OH)2 = 74.1 g/mol

mass = moles of Ca(OH)2 * molar mass

mass =  0.0043656 * 74.1

mass = 0.32 g of Ca(OH)2

Hope that helps!

               Adding 15 g of Flubber with 85 g of inert solvent will result in the formation of 15 % solution.

              W/V %  =  15 %

              Weight of Flubber  =  ?

              Weight of Solution  =  ?

              Let's suppose we are going to prepare a 100 mL solution. The using following formula we can calsulate the amount of Flubber required.

              W / W %  =  (Weight of Flubber ÷ Weight of Solution) × 100

Putting values,

              15 %  =  (Weight of Flubber ÷ 100 g) × 100

Solving for Weight of flubber,

              Weight of Flubber  =  (15 × 100 g) ÷ 100

              Weight of Flubber  =  15 g

Hence, taking 15 g of Flubber and adding it to 85 g of solvent will result in the formation of 15% Flubber solution.

Final answer:

To create a 15% solution of flubber, combine 15 grams of flubber with sufficient solvent to make 100 milliliters of solution, ensuring the flubber is fully dissolved and the total volume reaches 100 milliliters.

Explanation:

How to Make a 15% Solution of Flubber

To make a 15% solution of flubber, you would typically mix 15 grams of flubber (the solute) with enough solvent to make a total solution volume of 100 milliliters. The steps to creating this solution are as follows:

Weigh 15 grams of flubber using a scale.

Transfer the flubber into a container, such as a beaker.

Add a solvent, usually water, to the beaker.

Stir the mixture until the flubber is completely dissolved.

Continue adding water until the total volume of the solution is 100 milliliters.

Remember that when making a solution, the percentage is calculated by the mass of the solute divided by the total volume of the solution, and then multiplied by 100 to get the percentage. Therefore, a 15% solution of flubber in this case means you have 15 grams of flubber in every 100 milliliters of solution.

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Answer :

(1) The correct option is, Their components can be separated by physical processes.

(2) In the given image, image 1, 2 and 4 belong to the same element.

(3) The correct option is, kelvin

Explanation :

For 1 :

Heterogeneous mixtures : It is a mixture that appears non-uniformly throughout the solution and the particle size or shapes are also different.

Homogeneous mixtures : It is a mixture that appears uniformly throughout the solution and the particle size or shapes are not different.

The similarity between the homogeneous and heterogeneous mixture is that their components can be separated by physical processes. As the mixture of salt and water is homogeneous mixture which can be separated by the evaporation and the mixture of sand and water is heterogeneous mixture which can be separated by the filtration. Evaporation and filtration is a physical processes.

For 2 :

The element having the same number of protons are called as isotopes of the same element.

From the image given, three of the structures justify the above statement.

The three atomic models are model 1, model 2 and model 4.

For 3 :

S.I : It is defined as a scientific method to express the magnitude of the several basics units.

There are seven basic units in the system from which the other units are derived.  The seven base unit are, meter for length, kilogram for mass, second for time, ampere for current, kelvin for temperature, mole for amount of substance and candela for intensity.

As we know that the temperature can be measured in, degree Celsius, degree Fahrenheit and kelvin.

Thus, the SI unit of temperature is, kelvin

Answer: The number of moles of sugar that is used are 0.055 moles.

Explanation:

We are given:

Mass of 1 mole of sugar = 342 g

Mass of sugar used = 19 g

So, by applying unitary method, we get:

342 grams of sugar is making 1 mole

So, 19 grams of sugar will make = [tex]\frac{1mol}{342g}\times 19g=0.055mol[/tex]

Hence, the number of moles of sugar that is used are 0.055 moles.

Answer: An igneous rock that cools rapidly is made of really small mineral crystals.

Explanation:

The layers inside the earth are hot enough to melt a rock. The liquid or molten rock is known as magma.

When a molten rock cools and solidifies, it results in the formation of an igneous rock.

The slow cooling of magma will result in the formation of an igneous rock with large crystals. Whereas, rapid cooling of lava will result in the formation of an igneous rock with small crystals.

Thus, it can be concluded that an igneous rock that cools rapidly is made of really small mineral crystals.

Gaseous sodium chloride (NaCl(g)) has the highest entropy among the given options because particles in the gas phase have the greatest freedom of motion and randomness. The correct option is: NaCl(g).

Entropy is a measure of the disorder or randomness in a system. In general, gases have higher entropy than liquids, which in turn have higher entropy than solids, due to the increasing freedom of motion of the particles.

NaCl(s): Solid sodium chloride has the lowest entropy because the ions are in a fixed, orderly crystal lattice structure.

NaCl(aq): Aqueous sodium chloride, where the ions are dissolved in water, has higher entropy than the solid state but lower than the liquid and gaseous states because the ions can move freely within the solution.

NaCl(l): Liquid sodium chloride has even higher entropy as the ions are free to move within the liquid phase.

NaCl(g): Gaseous sodium chloride has the highest entropy because the ions or molecules are free to move in all directions and occupy a much larger volume than in the liquid, aqueous, or solid states.

Of the given options, NaCl(g) has the highest entropy.

35°c is equal to 95°f

To do this multiply 35 and 1.8

35 x 1.8=63

Now add 32

Resulting in the answer 95

(The equation for to solve for c and f is c1.8+32=f