Farmers depend on a growing season to provide for their families. A growing season is the part of the year when rainfall and amount of sunlight allow plants to growth at a rapid rate. For many plants, especially crops that humans consume, the growing season occurs in the spring after the last frost and can last through the summer. You are to provide support for proving that additional sunlight during the growing season provides an increase in growth for plants.

First, your teacher asks you to demonstrate the relationship between sunlight entering the plant cell and increased growth. How do two organelles in the plant cell work together so the plant can grow? Use the following flowchart to show this relationship. Drag the correct terms from the bank to fill in the blanks.

Assuming a similar number of molecules, the matter that occupies the most space is gas. Option C is correct.

This is because gases have no definite shape or volume, and their molecules are spread out, moving freely in all directions. As a result, gases tend to occupy the entire volume of their container and expand to fill the available space. This is known as the "kinetic molecular theory" of gases.

In contrast, solids and liquids have a definite volume and shape. Solids have a fixed shape and their molecules are packed closely together, while liquids have a variable shape and their molecules are less closely packed. As a result, both solids and liquids occupy less space than gases.

It is worth noting that the volume of a solid or liquid can change under certain conditions, such as changes in temperature or pressure. However, even under these conditions, the space occupied by a solid or liquid is still less than that occupied by a gas. Option C is correct.

The complete question is

Which of the following matters occupies more space, assuming similar number of molecules?

A. Solid

B. Liquid

C. Gas

D. Solid and gas

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Answer:

The Correct answer is B

activation energy of the reaction

or

speeds up the reaction

Answer:

Ca is a reducing agent and O is the oxidizing agent.

Explanation:

calcium is the reducing agent as it reduces oxygen while it oxidize itself and oxygen is an oxidising agent because it oxidized others and reduces itself. in this equation oxygen is reducing and Calcium is oxidising. and as it is stated in the definition that oxidizing agent is the agent which oxidises others and reduces itself and it is also stated that reducing agent reduces others and oxidize itself. so based on this statement calcium is reducing agent and O is a oxidizing agent.

Answer: They have eight outer electrons.

Explanation: They don't need any more electrons to be added to them and can't give out any electrons to other groups. They have a complete outer shell.

A compound is defined as two or more different elements bonded together in an ionic or covalent bonding arrangement.  Any individual compound has a fixed ratio of its elements.  The elements do not retain their individual chemical properties.  Thus, option "C" is correct.

A substance that has two or more different atoms which are chemically combined with each other in a fixed ratio by mass is known as a compound.

For example,

Here,  contains one atom of calcium and two atoms of chlorine which are chemically combined together in 1:2 ratio. Therefore, it is a compound.

Also, both chemical and physical properties of will be different from Ca and chloride.

Thus, option "C" is correct.

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Answer:

25.2°C

Explanation:

Given parameters:

Energy applied to the water  = 1000J

Mass of water  = 50g

Final temperature  = 30°C

Unknown:

Initial temperature  = ?

Solution:

To solve this problem, we use the expression below:

            H  = m c Ф

H is the energy absorbed

m is the mass

c is the specific heat capacity

Ф is the change in temperature

     1000  = 50 x 4.184 x (30  -  initial temperature )

     1000  = 209.2(30 - initial temperature)

      4.78  = 30 - initial temperature

      4.78  - 30  = - initial temperature

         Initial temperature  = 25.2°C

Answer:

B

Explanation:

Periodic refers to properties that repeat at certain intervals. Click to see full answer. In respect to this, what does periodic mean in the term periodic table? In the context of chemistry and the periodic table, periodicity refers to trends or recurring variations in element properties with increasing atomic number.

The ranking of boiling point is based on the molecular weight and intermolecular forces between molecules.

2 central carbons, each with CH3 bonded to them. A central C has H bonded left, above, behind to the right, and in front to the right. A carbon chain with 5 central carbons, with CH3 bonded to the first, second, and last carbons in the chain. 2 central carbons with CH3 bonded to the outside, and CH3 bonded to the leftmost inside carbon.

In this case, all compounds are hydrocarbons, meaning they are non-polar molecules and exhibit van der Waals forces. However, the length of the carbon chain and the arrangement of atoms in the molecule affect the magnitude of these forces.

The first compound has only two carbons and exhibits weak intermolecular forces, so it has the lowest boiling point. The second compound has three carbons and a more complex arrangement of atoms, resulting in slightly stronger van der Waals forces and a higher boiling point.

The third compound has a longer carbon chain, which increases the molecular weight and results in stronger intermolecular forces, giving it a higher boiling point than the previous two. The fourth compound has the longest carbon chain and has multiple branches, which increases the surface area of the molecule and the strength of the intermolecular forces, giving it the highest boiling point.

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Answer:

The answers are 4, 2, 3, 1

Explanation:

According to the law of reciprocal proportions, they should combine in the ratio of 10.24:7.92:1.29 by mass.

According to the law of reciprocal proportions when two elements join to form more than one compound, the weights of one element that combine with a fixed weight of the another are in a ratio of small whole numbers.

In phosphine, phosphorus = 91.1 parts and hydrogen = 8.9 parts

So, 8.9 pads of hydrogen combine with phosphorus = 91.1 parts .

1 part of hydrogen combine =  91.1 / 8.9

= 10.24 parts

Similarly,

for water 88.8 / 11.2

= 7.92 parts of hydrogen

For Phosphorus tetra oxide

= 56.4 / 43.6

= 1.29 parts

Thus, According to the law of reciprocal proportions, they should combine in the ratio of 10.24:7.92:1.29 by mass.

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The balanced chemical equation is 2Pb(NO3)2 + 2KI 2KNO3 + PbI2 for the reaction between lead(II) nitrate and potassium iodide. Since lead(II) nitrate has a coefficient of 2, the equation must be balanced by adding 2 moles of lead(II) nitrate for every mole of potassium iodide.

The atom inventory technique, which counts the number of atoms of each element on both sides of the equation, can be used to ascertain this. For the equation to be balanced, the number of atoms on both sides must be equal.

In this instance, there are 4 atoms total—2 on each side of the nitrate molecule, 2 on each side of the potassium molecule, 1 on each side of the lead atom, and 2 on each side of the iodine molecule.

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[1]pb(no3)2+[1]Na2CrO4

[1]PbCrO4+[2]NaNO3

Answer:

Br-CH2-CH(CH3)2-C(Cl)H-CH(CH3)2-CHO

Explanation:

The molecule has a total of 14 carbon atoms, 13 hydrogen atoms, and 1 bromine atom. The carbon atoms are arranged in a chain with a methyl group attached to the second carbon atom, a chlorine atom attached to the third carbon atom, and two methyl groups attached to the fourth carbon atom. The fifth carbon atom has a carbonyl group attached to it.

The molecule is an aldehyde, which means that it has a carbonyl group (C=O) at the end of the chain. The carbonyl group is polar, and the oxygen atom has a partial negative charge. The hydrogen atom has a partial positive charge. This polarity makes the aldehyde group susceptible to nucleophilic attack.

The bromine and chlorine atoms are both electrophilic, which means that they have a partial positive charge. This makes them susceptible to nucleophilic attack.

The methyl groups are non-polar and do not have any significant reactivity.

The molecule is a chiral molecule, which means that it has a mirror image that is not superimposable on itself. This is because the carbon atom with the carbonyl group is attached to four different groups.

The molecule is a liquid at room temperature and has a strong odor. It is used in a variety of products, including perfumes, flavorings, and plastics.

uhmm, white.

Explanation:

you'll basically look like blind ig

Answer:

Hint for Naming XeCl4

We have two non-metals so this is a molecular (sometimes called covalent) compound.

The correct statement about the combustion of glucose with oxygen to form water and carbon dioxide is The entropy of the products is greater than the entropy of the reactants.

A combustion reaction is a reaction in which a substance reacts with oxygen gas, releasing energy in the form of light and heat. Combustion reactions must involve O2 as one reactant.

A familiar example of a combustion reaction is a lighted match. When a match is struck along the match box, friction heats the head of the match to a temperature at which the chemicals react and then generate more heat which can escape into the air, and they burn with a flame after reacting with the oxygen.

In the above given question we can see that when combustion reaction of glucose takes place we can see that it produces water and along with that we can also see that carbon dioxide gas is also been released. In the reactant side we can see that there are no gaseous molecules present but we can see that in the product side there are gaseous molecules present, which suggests that randomness of the system is increased.

Hence the entropy of the products would be greater than the reactants.

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The following statements about the combustion of glucose with oxygen to form water and carbon dioxide is the entropy of the product is greater than the entropy of the the reactants.

The  combustion reaction is given as :

C₆H₁₂O₆   +   6O₂    ---->   6CO₂    +   6H₂O

The large molecule that is glucose is converted into the small small molecules water and the carbon dioxide. this is the reason the entropy of the product side is greater than the entropy ( the disorder )of the reactants .

Thus, The following statements about the combustion of glucose with oxygen to form water and carbon dioxide is the entropy of the product is greater than the entropy of the the reactants.

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Answer:

THE MASS OF 7.68 *10^24 MOLECULES OF PHOSPHORUS TRICHLORIDE IS 1746.25 g.

Explanation:

Molar mass of PCl3 = ( 31 + 35.5 *3) = 137.5 g/mol

At 7.68 * 10^24 molecules, how many number of mole is present?

6.03 * 10^23 molecules = 1 mole

7.68*10^24 molecules = x mole

x mole = 7.68 *10^24 molecules/ 6.03 *10^23

x mole = 1.27 *10 moles

x mole = 12.7 moles

Using mole = mass / molar mass

mass = mole * molar mass

mass = 12.7 moles * 137.5 g/mol

mass = 1746.25 g

Hence, the mass of 7.68 *10^24 molecules is 1746.25 g

Answer:

Mo: [Kr]5s²4d⁴ is correct

Explanation:

The molarity of vinegar is 0.47368421 moles per liter.

To calculate this, we can use the following formula:

molarity = (initial_volume - total_volume_change) / final_volume

In this case, the initial volume is 7.5 mL, the total volume change is 21 mL, and the final volume is 28.5 mL. Plugging these values into the formula, we get:

molarity = (7.5 - 21) / 28.5 = -0.47368421

The negative value for molarity indicates that the solution is diluted. This is because the total volume of the solution increased by 21 mL, while the amount of solute (acetic acid) remained the same.

It is important to note that the molarity of a solution can change depending on the temperature. This is because the volume of a solution expands as it gets warmer. Therefore, it is important to measure the volume and temperature of a solution at the same time to get an accurate measurement of its molarity.

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Answer: the electrostatic potential energy is -3.26 × 10⁻¹⁸ J

Explanation:

Given the data in the question;

I think the value of electrostatic potential energy of calcium sulfide CaS formed will be less(more negative) than KCl because the Ca2+ and S2- ions has more charge that is +2 and -2 respectively when compared to Kcl which has +1 and -1 charge.so it will be more negative.

radius = r\(_{ca+2}\) + r\(_{s-2}\) = 100 + 184 = 284 pm = 2.84 × 10⁻¹⁰ m

we know that; k = 2.31 × 10⁻²⁸ J

q1 = 2  ( charge on Ca⁺² )

q2 = -2( charge on S⁻²)

so

Ep = k × q1q2/r

so we substitute

Ep = 2.31 × 10⁻²⁸ × (+2×-2) / 2.84 × 10⁻¹⁰

Ep = (2.31 × 10⁻²⁸ × -4) / 2.84 × 10⁻¹⁰

Ep = -9.24 × 10⁻²⁸ / 2.84 × 10⁻¹⁰

Ep = -3.26 × 10⁻¹⁸ J

Therefore, the electrostatic potential energy is -3.26 × 10⁻¹⁸ J

Based on the data provided, the electrostatic potential energy is -3.26 × 10⁻¹⁸ J

The electrostatic potential energy is the work done in moving the charge from infinity to that point against the electric field.

The electrostatic potential energy between any two charges q1, q2 separated by distance r is derived from Coulomb’s law and mathematically given as:

where

From the data provided:

ionic radii of Ca2+ r1 = 100 pm

ionic radii of S2– = 184 pm.

Chargeon Ca2+ = +2

Charge on S2_ = -2

From the data above, it most likely that the value of electrostatic potential energy of calcium sulfide CaS formed will be less(more negative) than KCl because the Ca2+ and S2- ions has a greater charge of +2 and -2 respectively compared to Kcl which has +1 and -1 charge.

Calculating the electrostatic potential energy, Ep:

radius = r1 + r2 = 100 + 184 = 284 pm

r = 2.84 × 10⁻¹⁰ m

k = 2.31 × 10⁻²⁸ J

q1 = 2  ( charge on Ca⁺² )

q2 = -2( charge on S⁻²)

Then:

Ep = k × q1q2/r

Substituting the values above in the equation:

Ep = 2.31 × 10⁻²⁸ × (+2 ×-2) / 2.84 × 10⁻¹⁰

Ep = (2.31 × 10⁻²⁸ × -4) / 2.84 × 10⁻¹⁰

Ep = -9.24 × 10⁻²⁸ / 2.84 × 10⁻¹⁰

Ep = -3.26 × 10⁻¹⁸ J

Therefore, the electrostatic potential energy is -3.26 × 10⁻¹⁸ J.

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we would need 2625.13 grams (or 2.62513 kilograms) of NaCl.

To calculate the mass of NaCl required to produce a 26.4 mol/L solution with a 1.7 L volume, we need to use the formula that relates the mass of solute, moles of solute, and molarity:Molarity (M) = moles of solute / liters of solution Rearranging this formula, we get:moles of solute = Molarity (M) x liters of solutionWe can use this formula to find the moles of NaCl needed:moles of NaCl = 26.4 mol/L x 1.7 L = 44.88 molNow, we can use the molar mass of NaCl to convert from moles to grams. The molar mass of NaCl is 58.44 g/mol:mass of NaCl = moles of NaCl x molar mass of NaClmass of NaCl = 44.88 mol x 58.44 g/mol = 2625.13 gTo produce a 26.4 mol/L solution with a 1.7 L volume.

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As Earth makes its way around the sun (earth orbit) along a tilted path relative to its own axis we experience staggered views of different stars and constellations depending on where we find ourselves across our annual trajectory.

The cycle of our planet traveling along an elliptical orbit around the sun provides us with what we know as a year or roughly 365.25 days of time measurement; however, this orbital path isn't uniformed and appears like a flattened circle with one focus positioned near our star - The Sun.

This causes changes in distance between both objects throughout different periods of time during its annual journey; for instance, early January denotes when we reach perihelion or our shortest distance from Sun while we hit aphelion on early July - marking our farthest measured distance from it.

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1. C6H10O5 + 6O2 → 6CO2 + 5H2O

2. MgO + H2O → Mg(OH)2

3. 151.2444 grams of carbon dioxide are required to produce 3.44 moles of carbonic acid in the blood.

1. The complete, balanced chemical reaction for the burning of cellulose (C6H10O5), or wood, is:

C6H10O5 + 6O2 → 6CO2 + 5H2O

This reaction represents the combustion of cellulose in the presence of oxygen, resulting in the formation of carbon dioxide (CO2) and water (H2O).

2. The balanced equation for the reaction between magnesium oxide (MgO) and water (H2O) to produce magnesium hydroxide (Mg(OH)2) is:

MgO + H2O → Mg(OH)2

According to the equation, 1 mole of magnesium oxide reacts with 1 mole of water to produce 1 mole of magnesium hydroxide. Therefore, if 2.55 moles of magnesium oxide react, the same number of moles of magnesium hydroxide will be produced.

3. The balanced equation for the reaction between carbon dioxide (CO2) and water (H2O) to form carbonic acid (H2CO3) is:

CO2 + H2O → H2CO3

According to the equation, 1 mole of carbon dioxide reacts with 1 mole of water to produce 1 mole of carbonic acid. Therefore, if 3.44 moles of carbonic acid are produced, the same number of moles of carbon dioxide is required.

To calculate the mass of carbon dioxide, we need to know its molar mass, which is approximately 44.01 g/mol. Therefore, the mass of carbon dioxide required to produce 3.44 moles of carbonic acid is:

Mass = Moles × Molar mass

Mass = 3.44 moles × 44.01 g/mol

Mass = 151.2444 g

Therefore, 151.2444 grams of carbon dioxide are required to produce 3.44 moles of carbonic acid in the blood.

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Burning biomass results in the production of nitrogen oxides, carbon monoxide, and carbon dioxide, as well as other pollutants and particulates.

Wood is the substance that is most frequently taken from trees and used as fuel. Burning wood produces carbon dioxide as a byproduct. One of the earliest techniques for producing energy is the consumption of wood, which has been used as a wellspring of intensity and light for a long time.

Wood sends carbon dioxide into the climate alongside energy. Considering that carbon dioxide is an ozone-depleting substance that traps heat in the air, it is an essential driver of environmental change when the wood is scorched.

Trees likewise produce extra side effects including debris, smoke, and water fume.

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Answer:

Explanation:

Baking soda decomposes to produce sodium carbonate .

2NaHCO₃  = Na₂CO₃ + CO₂ + H₂O.

2 x 84 g          106 + 10 x 18  g

Molecular mass of Na₂CO₃ .10H₂O = 286

168 g baking soda  produces 286  g sodium carbonate

1.555g baking soda will produce 286 x 1.555 / 168

= 2.647 g

Percentage yield = actual yield / theoretical yield x 100

= ( .991 /2.647 ) x 100

= 37.43 %.

The standard deviation of ksp is 2.646 x 10⁻⁶ and the relative standard deviation kf ksp (%RSD) is 27.56%.

To calculate standard deviation of Ksp, first, find the deviations of each trial's Ksp value from the average Ksp value:

Trial 1 = (10 x 10⁻⁵) - (9.6 x 10⁻⁶) = 9.04 x 10⁻⁶

Trial 2 = (8.0 x 10⁻⁵) - (9.6 x 10⁻⁶) = 7.04 x 10⁻⁵

Trial 3 = (11 x 10⁻⁵) - (9.6 x 10⁻⁶) = 1.04 x 10⁻⁴

Square each deviation and find the average:

(9.04 x 10⁻⁶)² + (7.04 x 10⁻⁵)² + (1.04 x 10⁻⁴)² = 2.098 x 10⁻¹⁰

Average = 2.098 x 10⁻¹⁰ / 3 = 6.993 x 10⁻¹¹

Finally, take the square root of the average to get the standard deviation of Ksp:

Standard deviation of Ksp = √(6.993 x 10⁻¹¹) = 2.646 x 10⁻⁶

To calculate the relative standard deviation of Ksp (%RSD):

%RSD = (standard deviation / average) x 100%

%RSD = (2.646 x 10⁻⁶ / 9.6 x 10⁻⁶) x 100% = 27.56% (rounded to two decimal places)

Therefore, the standard deviation of Ksp is 2.646 x 10⁻⁶ and the relative standard deviation of Ksp (%RSD) is 27.56%.

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Answer:B

Explanation:

Answer:

\(\Delta H_T=108,620J=108.6kJ\)

Explanation:

Hello!

In this case, since we can evidence that the ice is firstly undergoing a melting process at constant 0.0 °C, whose associated enthalpy change is:

\(\Delta H_1 =m\Delta H_{fus}\)

Next, the formed liquid water undergoes a heating from 0.0 °C to 22°C, to the associated enthalpy change is:

\(\Delta H_2 =mC_{liq}(22\°C-0.0\°C)\)

Thus, the total enthalpy change, or heat added to the system turns out:

\(\Delta H_1 =255g*334\frac{J}{g}=85,170J\\\\ \Delta H_2=255g*4.18\frac{J}{g\°C}*(22\°C-0.0\°C)=23,449.8J\\\\ \Delta H_T=85,170J+23,449.8J\\\\\Delta H_T=108,620J=108.6kJ\)

Best regards!