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Which of the following energy conversions takes place in plants during photosynthesis? (5 points)

a
Chemical energy to light energy

b
Light energy to electrical energy

c
Electrical energy to light energy

d
Light energy to chemical energy

- The phytoplankton that is dead become liquefied over time due to pressure, and oil deposits are formed.

- Fish produce oil as a waste product that eventually forms oil deposits.

Answer:

2HCl(aq)+K2CO3(aq)→H2O(l)+CO2(g)+2KCl(aq)

Explanation:

HCl(aq)+K2CO3(aq)→H2O(l)+CO2(g)+KCl(aq)

2HCl(aq)+K2CO3(aq)→H2O(l)+CO2(g)+2KCl(aq)

H-1*2=2                                      H-2

Cl-1*2=2                                     Cl- 1*2=2

K -2                                           K-1*2=2

C- 1                                           C-1

O - 3                                        O-3

According to the specific heat capacity, 37752.33 J  of energy is required to lower temperature of water.

Specific heat capacity is defined as the amount of energy required to raise the temperature of one gram of substance by one degree Celsius. It has units of calories or joules per gram per degree Celsius.

It varies with temperature and is different for each state of matter. Water in the liquid form has the highest specific heat capacity among all common substances .Specific heat capacity of a substance is infinite as it undergoes phase transition ,it is highest for gases and can rise if the gas is allowed to expand.

It is given by the formula ,

Q=mcΔT

It is calculated as, Q=32.45×4.2×277=37752.33 J.

Thus, 37752.33 J of energy is required to lower temperature of water.

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Answer:

30.8 grams of magnesium hydroxide will form from this reaction, and magnesium nitrate is the limiting reagent.

Explanation:

The reaction that takes place is:

Now we convert the given masses of reactants to moles, using their respective molar masses:

0.528 moles of Mg(NO₃)₂ would react completely with (0.528 * 2) 1.056 moles of NaOH. There are more than enough NaOH moles, so NaOH is the reagent in excess and Mg(NO₃)₂ is the limiting reagent.

Now we calculate how many Mg(OH)₂ are produced, using the moles of the limiting reagent:

Finally we convert Mg(OH)₂ moles to grams:

Explanation:

for respiration(exchange of gases)

Actually, all leaves have the same structure. The main purpose is to carry the photosynthesis out, that provides food that needs to survive. :)

Taking into account the reaction stoichiometry, 27.5 grams of CO₂ is produced when 10.0 g of CH₄ is burned in oxygen.

In first place, the balanced reaction is:

CH₄ + 2 O₂ → CO₂ + 2 H₂O

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

The molar mass of the compounds is:

By reaction stoichiometry, the following mass quantities of each compound participate in the reaction:

Mass of CO₂ formed

It is possible to use a simple rule of three as follows: if by reaction stoichiometry 16 grams of CH₄ form 44 grams of CO₂, 10 grams of CH₄ form how much mass of CO₂?

mass of CO₂= (10 grams of CH₄×44 grams of CO₂)÷16 grams of CH₄

mass of CO₂= 27.5 grams

Finally, 27.5 grams of CO₂ is produced.

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The amount of sodium azide required will be 123.72 grams

From the equation of the reaction below:

\(2NaN_3 --- > 2Na + 3N_2\)

The mole ratio of sodium azide to nitrogen gas is 2:3

Mole of 80.0 g nitrogen = 80/28.02 = 2.855 moles

Equivalent mole of sodium azide = 2/3 x 2.855 = 1.903 moles

Mass of 1.903 moles sodium azide = 1.903 x 65 = 123.72 grams

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The first most obvious thing to note is when naming transitional metals, you have to state its charge with roman numerals (except for 1 if I remember correctly). For example, Iron (lll), iron has a charge of 3.

Answer:

D

Explanation:

The particles will move side to side over large areas.

Answer:

The particles will move side to side over large areas.

Explanation:

When 2.0 moles of KCIO3 decompose, 2.0 moles of O2 will form.

The balanced chemical equation shows that 2 moles of KCIO3 decompose to produce 3 moles of O2. Therefore, we can use the stoichiometric ratio from the balanced equation to determine the number of moles of O2 formed when 2.0 moles of KCIO3 decompose.

According to the stoichiometry, 2 moles of KCIO3 produce 3 moles of O2. Therefore, we can set up a proportion:

(2 moles KCIO3 / 2 moles O2) = (2.0 moles KCIO3 / x moles O2),

where x represents the unknown number of moles of O2 formed.

Simplifying the equation:

(2 moles KCIO3 / 2 moles O2) = (2.0 moles KCIO3 / x moles O2),

1 = (2.0 moles KCIO3 / x moles O2),

Cross-multiplying:

x moles O2 = (2.0 moles KCIO3 / 1),

x moles O2 = 2.0 moles KCIO3.

Therefore, when 2.0 moles of KCIO3 decompose, 2.0 moles of O2 will form.

It is important to note that this calculation assumes complete and ideal conditions, where the reaction proceeds with 100% efficiency. In reality, the actual yield of O2 may be lower due to various factors such as side reactions or incomplete decomposition. To determine the actual yield, additional information or experimental data would be required.

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d.2.93m.CaCl2 is present in the solution with a 2.93m concentration.

The boiling point of a solution is directly related to its concentration. The boiling point elevation of a solution, ΔTb, is equal to the product of the van't Hoff factor (i) and the molality of the solution (m).The quantity of moles of solute per kilogramme of solvent is known as molality.

Therefore, we can solve for the molality of the solution using the following equation:

ΔTb

\(= i *m\\105.3\°C= i * m\\\)

\(m =\frac{ 105.3 \°C }{i}\)

Assuming an ideal van't Hoff factor for CaCl2 (i = 2), the molality of the solution is:

\(m =\frac{ 105.3 \°C }{ 2}\\m = 52.65 m = 52.65 mol/kg\)

The concentration of CaCl2 in the solution is then:

\(C = m * Kb\\C = 52.65 mol/kg * 0.512 \°C/m\\C = 2.93 mol/kg\)

Therefore,The concentration of CaCl2 in the solution is  2.93m.

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complete question:The boiling point at 1.00 atm of an aqueous solution of CaCl2 is 105.3 °C. What is the concentration of CaCl2 in the solution? Kb (H2O) = 0.512 °C/m. Assume an ideal van't Hoff factor for CaCl2.

a.3.45m

b.4.40m

c.8.79m

d.2.93m

Answer:

209

83 Bi

Explanation:

213 213 - 4 4

85 At = 85 - 2 Y + 2 He

The percent by mass of the lithium in the compound is 18.78%. Option C

We know that the percentage has to do with the amount of the element that can be found in the compound. We can be able to obtain this when we  find the molar mass of the compound and then obtain the mass of the element in the compound.

Hence;

Molar mass of the compound = [2(7) + 12 + 3(16)]

= 14 + 12 + 48

= 74 g/mol

The we have the mass of the lithium in the compound as 14

Thus we then have;

Percent of lithium = 14/74 * 100/1

= 18.78%

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A summary of the C4 plants is given below:

The Hatch-Slack pathway, also known as C4 carbon fixation, is one of three recognized photosynthetic carbon fixation pathways in plants.

The names are a result of Marshall Davidson Hatch and Charles Roger Slack's discovery in the 1960s that some plants, when given 14CO2, integrate the 14C label into four-carbon molecules first.

Corn, sorghum, sugarcane, millet, and switchgrass are examples of C4 plants. C3 plants are often more prolific and efficient at photosynthesizing in cooler conditions because C4 morphological and biochemical adaptations demand more energy and resources from the plant.

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Answer:

Physical change are the temporary reversible change in which no new substance is formed.

Example: boiling of milk, melting of wax, cooling water,etc.

Explanation:

The greater the number multiplicity of the bond, the shorter the bond becomes.

Therefore the single bond is longer than the double bond. (3)

Ether can only form one hydrogen bond per molecule.

We know that the hydrogen bond is the kind of bond that occurs when the dipole of water interacts with the dipole that is on another molecule. We can see this in a lot of hydrides of electronegative elements.

We can see that ether has only one electronegative atom and that is oxygen from the image that is shown in the answer. This oxygen atom can interact with the positive end of the dipole in only one water molecule at a time.

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Answer:

It's important for scientists to know the properties of matter because all things are made up of matter. Each type of matter has different physical characteristics and scientists need to know and understand these characteristics to make calculations. ... The main phases of matter are solid, liquid, and gas

Explanation:

^^

Answer:

N. #3

Explanation:

this one just makes the most sense. If you mess with line stone to much or you are using to much heat around lime stone it will go boom. So the correct answer is #3.  

The mass of \(O_2\) needed to produce 8.65 x \(10^{23\) atoms of silver is 22.96 grams.

In the given balanced equation, it is stated that 2 moles of \(Ag_2O\) produce 4 moles of Ag and 1 mole of \(O_2\).

First, let's calculate the number of moles of Ag:

8.65 x \(10^{23\) atoms of Ag / (6.022 x \(10^{23\) atoms/mol) = 1.435 moles of Ag

Since 2 moles of  \(Ag_2O\) produce 1 mole of  \(O_2\), the number of moles of  \(O_2\) needed is half of the moles of  \(Ag_2O\).

Number of moles of  \(O_2\)= 1.435 moles of  \(Ag_2O\) / 2 = 0.7175 moles

Now, we'll use the molar mass of  \(O_2\) to find the mass:

Molar mass = 32.00 g/mol

Mass of  \(O_2\) = number of moles × molar mass

                   = 0.7175 moles × 32.00 g/mol = 22.96 g

Therefore, the mass of  \(O_2\) needed to produce 8.65 x \(10^{23\) atoms of silver is 22.96 grams.

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Answer:

the evidence statement contains reasoning.

Explanation:

the reason that this piece of information is reasoning rather than evidence is because it doesn't tell us the temperatures of the other substances (if any.) if we look at this substance and it has the most constant temperature compared to the others, how will we know if it is the most constant if we don't know the other substances' data?

this is reasoning because the evidence should tell us more about the substance and the others.

C. It can help us track how quickly element of the climate are changing

Answer:

chemical change because a different solid substance is formed.

Answer:

B) Chemical Change

Explanation:

Combining the two clear colorless liquids is a chemical change because a different solid substance is formed. A precipitate is an insoluble solid that forms when two solutions are combined and react chemically. Insoluble means that the solid will not dissolve.

Answer:

The speed of molecules in a gas is directly proportional to the square root of the temperature and inversely proportional to the square root of the molar mass.

Since both gases are at the same temperature, we only need to compare their molar masses.

The molar mass of carbon dioxide (CO2) is 44 g/mol and the molar mass of hydrogen (H2) is 2 g/mol.

Therefore, the square root of the molar mass of hydrogen is smaller than the square root of the molar mass of carbon dioxide.

This means that the speed of hydrogen molecules is greater than the speed of carbon dioxide molecules at the same temperature.

Explanation:

Hund's first and second rules describe how electrons are arranged in an atom's orbitals. Hund's first rule states that when electrons occupy orbitals of equal energy (such as the three p orbitals in a given shell), they will each first occupy separate orbitals before any orbital receives a second electron. This means that electrons will always try to maximize their spin, with one electron in each orbital having the same spin before any pairing occurs.

Hund's second rule states that if two or more orbitals of the same energy level are available, electrons will occupy empty orbitals before they pair up in an orbital that already has an electron.

Now, let's look at the orbital notation for sulfur. The atomic number of sulfur is 16, which means it has 16 electrons.

The orbital notation for sulfur would be:

1s² 2s² 2p⁶ 3s² 3p⁴

This indicates that sulfur has two electrons in the 1s orbital, two electrons in the 2s orbital, and six electrons in the 2p orbital, fully occupying all three 2p orbitals with two electrons in each and spinning in the same direction. Sulfur also has two electrons in the 3s orbital and four electrons in the 3p orbital, with a single electron in each of the three 3p orbitals and the fourth 3p orbital being half-filled. The half-filled 3p orbital is a consequence of Hund's rule, which predicts that electrons will fill each of the three 3p orbitals with one electron before any two orbitals receive a second electron.

ANSWER

Fluorine

EXPLANATION

Based on the information provided, fluorine has the highest electronegativity and it form strong ionic bond with metals

Fluorine has 7 valence electron at its outermost shell and it readily to take on electron from its neighboring atom.

Therefore, the answer is fluorine