State how you would know that an Easter has formed?

Answer:

54.72 g

Explanation:

Mass = ?

Volume = 5.61 L

Pressure = 5.66 atm

Temperature = 311 K

The relationship between these equations is given by the ideal gas equation;

PV = nRT

where R = gas constant = 0.0821 atm L K-1 mol-1

n = PV / RT

n = 5.66 * 5.61 / (0.0821 * 311 )

n = 1.2436 mol

Number of moles = Mass / Molar mass

Mass = Number of moles * Molar mass = 1.2436 * 44 = 54.72 g

When ammonium nitrate crystals are added in plastic bags filled with water, than a endothermic reaction takes place.

Given is that the students were instructed to mix ammonium nitrate crystals in plastic bags filled with water. They were split into three groups, and each group created a design. Each design used a different amount of ammonium nitrate crystals.

Therefore, when ammonium nitrate crystals are added in plastic bags filled with water, than a endothermic reaction takes place.

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Answer:temperature maintained by Design 2 and time Design 1 stays cold

Explanation:

Atoms of silicon have 0.15 moles.

\(4.0 × 10^2^4\) atoms of silicon.

We have to find the number of moles.

Silicon has the atomic number 14.

One mole of silicon contains \(6.023× 10^2^3\) atoms.

\(6.023× 10^2^3\)number of atoms are present in one mole of silicon.

\(4.0*10^24\)number of atoms will have-

\(6.023*10^2^3/4.0*10^2^4=0.15\) moles.

Thus atoms of silicon have 0.15 moles.

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Answer:

Calcium and magnesium sulphide react to form calcium sulphide and magnesium metal.

Explanation:

Ca + MgS → CaS + Mg

The reaction between calcium and magnesium sulfide produces calcium sulfide and magnesium metal. The balanced equation can be given as Ca + MgS → CaS + Mg.

An equation for just a chemical reaction is said to be balanced if both the reactants as well as the products have the same number of atoms and total charge for each component of the reaction. In other words, both side of the reaction have an equal balance of mass and charge.

Conservation of charge as well as mass, equation and reaction balance, etc. The components and outcomes of a chemical reaction are listed in an imbalanced chemical equation, but the amounts necessary to meet the conservation of mass are not specified. The reaction between calcium and magnesium sulfide produces calcium sulfide and magnesium metal. The balanced equation can be given as Ca + MgS → CaS + Mg.

Therefore, the balanced equation can be given as Ca + MgS → CaS + Mg.

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the nurse will administer approximately 1 teaspoon (tsp) of the medication.1 teaspoon (tsp) is approximately equal to 5 mL.

To determine the number of teaspoons the nurse should administer, we need to calculate the equivalent volume of 30 mEq of KCL using the provided concentration of 60 mEq/10 mL.

First, we'll find the ratio of milliequivalents (mEq) to milliliters (mL) in the given concentration:

60 mEq / 10 mL = 6 mEq/mL

Next, we can set up a proportion to find the volume (in mL) that corresponds to 30 mEq:

6 mEq/mL = 30 mEq / X mL

To solve for X, we can cross-multiply:

6X = 30 * 1

6X = 30

X = 30 / 6

X = 5 mL

Since the medication cup is marked in teaspoons, we need to convert 5 mL to teaspoons.

1 teaspoon (tsp) is approximately equal to 5 mL.

Therefore, the nurse will administer approximately 1 teaspoon (tsp) of the medication.

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Based on the principles of fluid mechanics and erosion, the water in the river flows faster on the outside of the bend and slower on the inside.

Meandering rivers are formed due to the lateral erosion of the riverbank, which creates a curvy path for the water to flow. This is caused by the differences in water velocity between the outside and inside bends of the river.

The above difference in velocity causes the water on the outside to exert more erosive force on the bank, leading to more erosion on the outside of the curve. The slower-moving water on the inside, by contrast, tends to deposit sediment, which can result in the formation of sandbars and other features.

Therefore, it is likely that there is more erosion on the outside of the curve in the riverbed as water flows through it.

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The main reservoirs of the carbon cycle are the atmosphere, oceans, land (including vegetation and soils), and fossil fuels. In these reservoirs, carbon exists in both inorganic and organic forms.

The inorganic carbon cycle involves the exchange of carbon dioxide (CO2) between the atmosphere and oceans through processes like photosynthesis and respiration.

Organic carbon, on the other hand, is found in living organisms, dead organic matter, and soil organic matter. It is cycled through processes such as decomposition and consumption by organisms. The interactions between the inorganic and organic carbon cycles occur primarily in the biosphere, where photosynthesis converts inorganic carbon into organic carbon compounds. While inorganic carbon is primarily in the form of CO2, organic carbon is present in complex organic molecules. Both forms of carbon play crucial roles in energy transfer, nutrient cycling, and climate regulation.

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Answer:

ER is present in both plants & animals

vacuole is present in plants only

Explanation:

Hope this helps :)

Answer:

The experimenter observed this experiment in a lab rather than natural world because it might be dangerous to the atmosphere if he does the experiment in the natural world and it was still an hypothesis so that's why he did it in the lab.

Answer

C. 259 K

Explanation

Given:

Temperature = -14°C

What to find:

The temperature in kelvins of -14°C.

Solution:

Conversion factor: 0°C + 273 = 273 K

Therefore, 14°C + 273 = 259 K

The temperature in kelvins of -14°C is 259 K

Carbohydrate atoms usually have how hydrogen atoms as compared to oxygen atoms >>>>

Answer:C

Explanation:

Diagram C shows the repeating groups of atoms that make up the samples Damian mixed together.

A homogenous combination of multiple parts with particles smaller than 1 nm is referred to as a solution. Solutions come in many forms, including soda water, salt and sugar solutions, and others.

Damian mixed two samples together: red liquid that smells irritating and a black solid with no smell. He analyzed the results and found two ending substances. One of the ending substances was a yellow solid. This ending substance is made up of the repeating group of atoms shown above. Diagram C  shows the repeating groups of atoms that make up the samples Damian mixed together.

Therefore, diagram C  shows the repeating groups of atoms that make up the samples Damian mixed together.

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Answer:Compound T (C5H8O) has a strong IR absorption band at 1745 cm-1, which is characteristic of a carbonyl group (C=O). The broad-band proton-decoupled 13C spectrum of T shows three signals at δ 220 (C), 23 (CH2), and 38 (CH2), indicating the presence of two distinct methylene groups and a carbonyl carbon.

Based on the given information, a possible structure for T is 2-pentanone, which has the following structure:

CH3CH2C(=O)CH2CH3

This structure has a carbonyl group at δ 220 ppm and two methylene groups at δ 23 ppm and δ 38 ppm, respectively. The chemical formula for this compound is C5H10O, which matches the molecular formula provided for T.

Thus, 2-pentanone is a possible structure for compound T based on the given spectral data.

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Answer:

A solution with a concentration of 45 g/L means that there are 45 grams of solute (the substance that is dissolved) in each liter of the solution. This is a measure of how much of a substance is dissolved in a given volume of the solution. It is also sometimes referred to as the "molarity" of the solution.

Answer:

It means the substance has 45 grams per liter.

Explanation:

This and other abbreviations are used for units of measurements, to make things more simple.

Hope it helped!

Answer: It will change to gas

Explanation: It will change to gas because of evaporation. When the heat intensifies it will happen.

The completed definitions of the trema are given as follows:

The patterns created by the streams, rivers, and lakes in a certain drainage basin are known as river systems. They are influenced by the geography of the land, the gradient of the land, and whether a particular region is dominated by hard or soft rocks.

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Answer:

the answers for the quiz are;

1: A. appearance, composition

2: C. they link up in different ways

3: A. Shape

4: B. false

5: C. a chunky solid formed from two liquids combining

6: B. honey dissolving in tea

7: C. a red candy dissolves and turns water pink

8: liquid water becoming steam

9: D. A substance has changed chemically

10: A. a chemical change because the marshmallow changed in taste, color and smell

Explanation:

On the roasting of marshmallows, a chemical change takes place which changed their taste, color, and smell. Therefore, option (A) is correct.

A chemical change is a type of change in which the molecular composition is altered and a new substance is formed is known as a chemical change.

The changes are irreversible and permanent in chemical change. The mass of the substance is altered by adding or removing it during a chemical change.

During a chemical change, there is an energy difference in the breaking of old bonds and the formation of new bonds.

When marshmallows are roasted, a chemical change takes place. The heat causes a chemical reaction producing water molecules, which evaporate and leave carbon behind.

The marshmallow swells as the moisture inside expands, which causes the marshmallow to swell. when the moisture expands, it forms tiny holes in the marshmallow, which offer the moisture to escape as steam.

Then, the carbon present in sugar burns with the oxygen in the air. The blackened part of the marshmallow is the roasted carbon which changes the marshmallow's color.

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(a)

Heptane is the limiting factor. as O2 can be found in air.

(b)

balanced equation: C7H16 + 11 O2 --> 7 CO2 + 8 H2O

moles of O2= mass/ mr

moles of O2= 25000/32

moles of O2 = 781.25 moles

According to molar ratio:  

11 : 7

moles of carbon dioxide:

(781.25/11) * 7

497.16 moles

using mass = moles * mr

mass of CO2 = 497.16  * 44 = 21875.04 g -- this is mass of CO2

Explanation:

Answer: Digestive enzymes play a key role in breaking down the food you eat. These proteins speed up chemical reactions that turn nutrients into substances that your digestive tract can absorb. Your saliva has digestive enzymes in it

Explanation:

Explanation:

here u go hope this helps :)

Answer:

Explanation:

Hello! To begin, remember Avogadro's number, 6.02*10^23 molecules!

You take your number of Ar atoms and divide it by Avogadro's number:

\(\frac{1.63 * 10^{24} Ar atoms}{6.02 * 10x^{23} }\) = 2.7076412 moles...

round to 3 sig dig's (based on "1.63")

Final answer = 2.71 moles Ar

The ΔG is 5.61 kJ.

To calculate the ΔG of a chemical reaction, it is necessary to use the formula of ΔG, and replace the values:

Remember to convert 93.0 J to kJ to solve it.

So, the ΔG for this reaction is 5.61 kJ.

Answer:

Chlorine has 17 total electrons with electron configuration 1s^2 2s^2 2p^6 3s^2 3p^5.

What are the first two quantum numbers for the six electrons in the 2p subshell?

Explanation:

The principal quantum number represents the shell number in which the electron is present.

It is represented with "n".

The next quantum number is the azimuthal quantum number.

It represents the shape of the orbital.

It has values from 0 to (n-1).

Its value depends on the principal quantum number.

Chlorine has 17 total electrons with electron configuration 1s^2 2s^2 2p^6 3s^2 3p^5.

For the six elecetrons in 2p subshell:

The first two quantum number values are the same and their values are:

n=2 , l=1.

Answer:

Oc. Y is your correct answer

Answer:

k Nishant

Explanation:

the answer is oC . Y

The third law of thermodynamics describes the entropy of a: solid.

The third law of thermodynamics states that the entropy of a pure crystalline substance approaches zero as the temperature approaches absolute zero (0 Kelvin or -273.15 degrees Celsius). This law implies that at absolute zero, a perfectly ordered and pure crystalline solid will have zero entropy.

The third law of thermodynamics is not specific to liquids or gases but applies to solids. In a solid, the molecules are highly ordered and have fixed positions in a regular lattice structure. As the temperature decreases towards absolute zero, the thermal motion of the molecules reduces, and the system becomes more ordered, resulting in a decrease in entropy.

In contrast, liquids and gases have higher entropy compared to solids at absolute zero because their molecules have more freedom of movement and are not as tightly arranged. Therefore, the third law of thermodynamics specifically addresses the entropy of solids and does not apply to liquids or gases.

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The male father produces sperms, which are male gametes. The female parent produces female gametes known as eggs. The zygote is created when the sperm and egg combine. This represents the sexual reproduction.

Merging the genetic material from two separate people of different sorts (sexes) to create new living things. In the majority of higher organisms, the male creates a small, mobile gamete that travels to the larger, stationary gamete generated by the female in order to fuse with it. This is sexual reproduction.

Following are the various steps that constitute animal sexual reproduction: The male father produces sperms, which are male gametes. The female parent produces female gametes known as eggs. The zygote is created when the sperm and egg combine. Fertilisation is the name given to this process.

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Thermonuclear fusion reactions in the core of the sun convert four hydrogen atoms into one helium atom. The helium atom has two protons, two neutrons, and two electrons. This process releases a large amount of energy in the form of light and heat,  the helium atom has two protons, two neutrons, and two electrons.


Thermonuclear fusion reactions occur in the core of the sun due to the high temperatures and pressures present. In these reactions, four hydrogen atoms combine to form one helium atom. Each hydrogen atom has one proton, and when four of them come together, they combine to form one helium atom with two protons.

Additionally, each hydrogen atom also has one electron, so when four hydrogen atoms combine, the resulting helium atom will have two electrons. However, the number of neutrons in a helium atom can vary. Typically, a helium atom has two neutrons, making its total number of nucleons (protons and neutrons) equal to four.

The process of thermonuclear fusion in the sun's core releases a tremendous amount of energy in the form of light and heat. This energy is what sustains the sun's brightness and provides heat and light to Earth.

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Types of crystalline solids characterized by;

(a) high mobility of electrons throughout the solid; metallic solids.

(b) softness, relatively low melting point; covalent network solid.

(c) high melting point and poor electrical conductivity; ionic solids.

(d) network of covalent bonds; molecular solids.

Crystalline solids are those that have their atoms, ions, or molecules arranged in a regular, well-defined pattern. The unit cell is the smallest repeating pattern of crystalline solids, and unit cells are similar to bricks in a wall in that they are all identical and repeating.

Ionic solids, molecular solids, network covalent solids, and metallic solids are the four types of crystalline solids. A covalent network solid is a type of solid that has a low melting point, softness, and low electrical conduction. Metal cations are surrounded by a "sea" of mobile valence electrons in metallic crystals.

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