A teacher asks a student to write the chemical equation for photosynthesis. The student's response is shown below.
CO2+H2O→C6H12O6+O2
The equation is not balanced correctly. Which of these is a balanced equation for photosynthesis?

The nuclear equation for the alpha decay of Uus-294 is

\(^{294}{117} Uus\) →\(^{4}{2}He + ^{290}_{115}Mc\)

To complete the nuclear equation for the alpha decay of Uus-294, we need to determine the missing product.

During alpha decay, the emission of an alpha particle, composed of two protons and two neutrons, leads to the formation of a new nucleus.

The balanced nuclear equation for the alpha decay of Uus-294 can be represented as follows:

\(^{294}{117} Uus\) → \(^{4}{2}He +\)_____(missing product)

In this equation, the atomic number of the missing product must be two less than the atomic number of Uus-294 (117 - 2 = 115), and the mass number of the missing product must be four less than the mass number of Uus-294 (294 - 4 = 290).

Based on this information, the missing product can be identified as:

\(^{290}_{115}Mc\)

Mc stands for Moscovium, which has an atomic number of 115. By subtracting two from the atomic number of Uus, we obtain the atomic number of Mc. The mass number of Mc-290 is obtained by subtracting four from the mass number of Uus-294.

Therefore, the  nuclear equation for the alpha decay of Uus-294 is:

\(^{294}{117} Uus\)→ \(^{4}{2}He + ^{290}_{115}Mc\)

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The complete question is :

Complete this nuclear equation for the alpha decay of Uus-294 by writing a

notation for the missing product:

\(^{204} {117} Uns\)→\(^{4} _{2} He +\)_____

Answer:

Flow freely

Explanation:

Answer:

earth quakes, tornados, hurricans

Answer:

the answer is stimilus!

Explanation:

no...the atoms will not behave the same

as when temperature is increased, the atoms vibration and kinetic energy will also be increased....they come in excited state...

where as when temperature is reduced ,atoms kinetic energy slows down....

Answer:

what

Explanation:

These polypeptides usually contain many amino acid side chains, and different side chains have different physical and chemical properties. Amino acid side chains may interact with each other through a variety of chemical interactions, including electrostatic, hydrogen bonding, van der Waals, and hydrophobic interactions.

The strongest attraction between the arginine (arg) and glutamic acid (glu) side chains holding these polypeptides together is salt bridges.The interaction between arginine (arg) and glutamic acid (glu) side chains that holds these polypeptides together is a salt bridge. Salt bridges are electrostatic interactions between oppositely charged amino acid side chains, which may contribute to protein stability. They are especially important in ion channels and enzymes, which require a high degree of specificity and selectivity. Salt bridges occur between acidic and basic residues and are also important in the formation of secondary and tertiary protein structures.These polypeptides usually contain many amino acid side chains, and different side chains have different physical and chemical properties. Amino acid side chains may interact with each other through a variety of chemical interactions, including electrostatic, hydrogen bonding, van der Waals, and hydrophobic interactions.

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Answer:

Mixing chamber

The four-step synthesis involves the addition of water, oxidation with PCC, further oxidation with Jones reagent, and protection of the tertiary alkyl group with an alcohol and acid catalyst.

Step 1: The alkene is converted to an alcohol by adding water.
Reagent: Water
Conditions: Acid-catalyzed hydration

Step 2: The alcohol is oxidized to an aldehyde.
Reagent: PCC (pyridinium chlorochromate)
Conditions: Room temperature

Step 3: The aldehyde is oxidized further to a carboxylic acid.
Reagent: Jones reagent (chromic acid)
Conditions: Acidic conditions

Step 4: The tertiary alkyl group is protected by converting it to an ester.
Reagent: Alcohol and acid catalyst
Conditions: Acidic conditions

The final product is a carboxylic acid bonded to the tertiary alkyl group.

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Answer:

3.38 moles of O2.

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

4CH2OH + 5O2 → 4CO2 + 6H2O

From the balanced equation above,

4 moles of CH2OH required 5 moles of O2 for complete combustion.

Finally, we shall determine the number of mole of O2 needed to react with 2.7 moles of CH2OH. This can be obtained as follow:

From the balanced equation above,

4 moles of CH2OH required 5 moles of O2 for complete combustion.

Therefore, 2.7 moles of CH2OH will require = (2.7 × 5)/4 = 3.38 moles of O2 for complete combustion.

Thus, 3.38 moles of O2 is required.

The modern periodic law states that the physical and chemical properties of the elements are periodic functions of their atomic numbers. The elements are arranged in the increasing order of their atomic numbers.

Here the element Lithium is a alkali metal which is located in the group 1 of the periodic table and placed in the second period. Its atomic number is 3. Alkali metals are highly electropositive and are good reducing agents.

Lithium reacts with the elements of groups 16 and 17 and form compounds, they also burn in oxygen and react with water.

The reaction of lithium with water is:

2Li + 2H₂O → 2LiOH + H₂

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The Oxygen is oxidized is the correct option.

The correct option for the given statement: Consider the reaction: 2HgO(s) → 2Hg() + O2(g) is "Oxygen is oxidized.

The given chemical equation for the reaction is:

2HgO(s) → 2Hg() + O2(g)According to the given chemical equation, the reactant HgO loses oxygen and forms elemental mercury and oxygen gas. Therefore, it can be concluded that Oxygen is oxidized.

Mercury(II) ion is the reducing agent: Reducing agents are the substances that undergo oxidation during a redox reaction, and their oxidation state decreases.

The reducing agent gets oxidized and reduces the other compound.Oxygen is the oxidizing agent:

Oxidizing agents are the substances that undergo reduction during a redox reaction, and their oxidation state increases. The oxidizing agent gets reduced and oxidizes the other compound.Mercury is reduced:

In the given chemical reaction, mercury is produced in its elemental form; this implies that it has undergone reduction.

Hence mercury is reduced.

Therefore, Oxygen is oxidized is the correct option.

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Answer:

208.9 g.

Explanation:

The balanced chemical equation for the reaction between iron (Fe) and sulfur (S) to form iron sulfide (FeS) is:

8 Fe + S8 → 8 FeS

According to the balanced equation, 1 mole of S reacts with 8 moles of Fe to produce 8 moles of FeS. The molar mass of sulfur (S) is 32.06 g/mol, and 15.0 g of S corresponds to:

15.0 g S × (1 mol S / 32.06 g S) = 0.468 mol S

we need

Molar mass of S is 32 g/mol and of Fe is 55.8 g/mol

Since the reaction occurs with excess Fe, the amount of FeS produced is limited by the amount of S that reacts. Therefore, we can use the mole ratio between S and FeS to determine the amount of FeS produced.

0.468 mol S × (8 mol FeS / 1 mol S) × (55.8 g FeS / 1 mol FeS) = 208.9 g FeS

Therefore, when 15.0 g of S reacts with excess Fe, the amount of FeS that can be produced is 208.9 g.

The empirical formula represents the simplest, most reduced ratio of elements in a compound, while the molecular formula provides the actual number of atoms of each element in a molecule.

The empirical formula gives a simplified representation of the elemental composition, while the molecular formula provides the precise number of atoms in a molecule.

The empirical formula is useful for comparing the relative ratios of elements, while the molecular formula provides more detailed information about the compound's structure and composition.

The empirical formula gives the relative ratio of atoms of each element in a compound. It represents the simplest whole-number ratio of the elements present.

For example, the empirical formula of glucose is CH2O, indicating that the ratio of carbon to hydrogen to oxygen atoms is 1:2:1.

On the other hand, the molecular formula provides the actual number of atoms of each element in a molecule. It gives the specific arrangement and composition of atoms in a compound.

Using the example of glucose, the molecular formula is C6H12O6, showing that each molecule of glucose consists of six carbon atoms, twelve hydrogen atoms, and six oxygen atoms.

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The correct equation for the balanced reaction between chromium (Cr) and chlorine (Cl₂) to form chromium chloride (CrCl₃) is:

2 Cr + 3 Cl₂ → 2 CrCl₃

In this reaction, 2 atoms of chromium react with 6 atoms of chlorine (3 molecules of Cl₂) to produce 2 molecules of chromium chloride. This equation is balanced because there are equal numbers of each type of atom on both sides of the equation.

It is important to have a balanced reaction in order to accurately represent the quantities of reactants and products involved in the reaction.

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0.879 moles of carbon disulfide would be produced if you reacted 56.3g of sulfur dioxide with an excess of carbon.

Equal numbers and types of each atom appear on both sides of balanced chemical equations. A balanced equation must have coefficients that are the simplest whole number ratio. Chemical reactions always conserve mass.

1. Write the balanced chemical equation:
SO₂ + 3C → CS₂ + 2CO

2. Convert the given mass of sulfur dioxide (SO2) to moles:
56.3 g SO₂ × (1 mol SO₂ / 64.07 g SO₂) = 0.879 moles SO₂

3. Use the stoichiometry of the balanced equation to find the moles of carbon disulfide (CS₂) produced:
0.879 moles SO₂ × (1 mol CS₂/ 1 mol SO₂) = 0.879 moles CS₂

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According to the question Therefore, you need 2.394 grams of solid copper (II) sulfate to make a 500.0 mL 0.0300 M solution.

To determine the mass of solid copper (II) sulfate needed to make 500.0 mL of 0.0300 M copper (II) sulfate solution, we need to use the formula:
M = (molarity x moles) / volume

First, let's calculate the moles of copper (II) sulfate required:

moles = M x volume = 0.0300 mol/L x 0.5000 L = 0.0150 moles

Next, we need to determine the molar mass of copper (II) sulfate, which is 159.6 g/mol.

Finally, we can calculate the mass of copper (II) sulfate required:

mass = moles x molar mass = 0.0150 moles x 159.6 g/mol = 2.39 g

Therefore, we would need 2.39 grams of solid copper (II) sulfate to make 500.0 mL of 0.0300 M copper (II) sulfate solution.


mass = moles × molar mass

First, we need to find the moles of copper (II) sulfate:

moles = concentration × volume

moles = 0.0300 M × 0.500 L (converting 500.0 mL to L)

moles = 0.0150 mol

Next, we'll find the molar mass of copper (II) sulfate (CuSO4):

Molar mass = 63.5 (Cu) + 32.1 (S) + 4 × 16.0 (O) = 159.6 g/mol

Now, we can calculate the mass:

mass = 0.0150 mol × 159.6 g/mol

mass = 2.394 g

Therefore, you need 2.394 grams of solid copper (II) sulfate to make a 500.0 mL 0.0300 M solution.

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Option C is correct. The right response is 1.4. The Henderson-Hasselbalch equation is written as pH=pKa +log([A][HA])

A weak base will react with the H+ from a strong acid to create the weak acid HA when a strong acid is put to a buffer: H+ + A- HA. The pH only minimally changes because the H+ is absorbed by the A- rather than forming H3O+ (H+) by interacting with water. pH is calculated as follows: pH = pKa + log [Salt] / [Acid]. Any acidic buffer solution will always have a pH below 7, while any basic buffer solution will always have a pH above 7. Option C is correct.

The right response is 1.4.

The Henderson-Hasselbalch equation is written as pH=pKa+log([A][HA])

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The discoveries of Sir J.J Thomson and Sir Rutherford disproves Dalton's atomic theory in the sense that their theories negates, disorient and disproves the theory which he proposed that atoms are indivisible, but rather atoms consist of elementary particles.

When Dalton said " atoms are made up of indestructible and indivisible particles, these scientists proved him otherwise by establishing the fact that the atoms of elements consist of a central core nucleus containing protons and neutrons and electrons revolves around the nucleus

So therefore, we now deduce from the explanation above that atoms consist of elementary subatomic particles which is unlike what John Dalton said in his discoveries.

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As the mass number of an element’s isotopes of an element increases, the number of protons remains the same.

The mass number is the total number of protons and neutrons that exists in an atomic nucleus. It's also called atomic mass number or nucleon number. The mass number is approximately equal to the atomic mass (isotopic mass) of the atom.

The number of protons that is present in an atom determines what kind of atom we are looking at. It's called the atomic number.

Together, the number of neutrons and protons in an atom determines that element's mass number. However, as the mass number increases, the number of protons would remain the same.

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How much Na3PO4Na3PO4 is required to make 575 mLmL of the a solution with a 1.50 MM Na+Na+ ion concentration.

The symbol for the unit is mol.

The number of molecules ratio is written as follows.

Given.

The formula for moles is.

Mass of material / Mass from one mole equals the number of moles.

95 / 86.94 equals the number of moles.

By dividing the amount of each solutions by its molarity, you can figure out the molecular weight of each reactant. By dividing the amount of units of every reaction by its equimolar coefficient in the chemical equation, you may determine which chemical is the limiting one.

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The two main human-derived sources of carbon dioxide are: 1. Burning of fossil fuels, 2. Deforestation and land-use changes.

Burning of fossil fuels: The combustion of fossil fuels such as coal, oil, and natural gas for energy production, transportation, and industrial processes releases significant amounts of carbon dioxide into the atmosphere. This is a major contributor to the increase in atmospheric carbon dioxide levels and the greenhouse effect.

Deforestation and land-use changes: The conversion of forests and other natural ecosystems into agricultural lands or urban areas results in the release of carbon dioxide. Trees and vegetation act as carbon sinks, absorbing carbon dioxide during photosynthesis. When forests are cleared or destroyed, this stored carbon is released back into the atmosphere as carbon dioxide through processes like burning and decomposition.

These two sources contribute significantly to the anthropogenic increase in carbon dioxide levels, which has implications for climate change and global warming.

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The reason for the difference in the conclusions of Bohr and Rutherford is because they had different focuses in their experimental process. Option B

The atom is the smallest unit of a substance which can take part in a chemical reaction. Now we know that many of the early scientists worked hard to be able to understand the structure of the atom. This led to the development of many theories about the structure of the atom.

It is worthy of note that in the search for the exact nature of the structure of the atom, the focus of different scientists were not the same. As such, the reason for the difference in the conclusions of Bohr and Rutherford is because they had different focuses in their experimental process. Option B

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Answer:

D. Reactants.

Explanation:

The law of conservation of mass states that mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations. According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants.

Answer:

A pH calibration is the process of adjusting your pH meter by measuring solutions of a known pH value. This is because the characteristics of your electrode will change over time and this needs to be compensated for. A calibration does this by matching your pH meter to the current characteristics of your pH sensor.

Explanation:

The following equation is used to calculate the change in enthalpy that occurs when 100 g of water at 50.0 °C is cooled to ice at -30 °C: First, using the equation q = mcT, it is determined how much heat energy is needed to cool the water from 50.0°C to 0°C. q = (100 g)(4.18 J/g°C)(50.0°C-0°C) = 20900 J in this scenario.

Then, using the equation q = mL, where q is the heat energy, m is the mass of the water, and L is the specific heat of fusion of water, it is determined how much heat energy is needed to turn the water into ice at 0°C. That is. q = (100 g)(6.01 kJ/mol) = 601 kJ in this instance.

The equation q = mcT, where q is the heat energy, m is the mass of the ice, c is the specific heat of ice, and T is the change in temperature, is used to determine the amount of heat energy needed to cool the ice from 0°C to -30°C. q = (100 g)(2.03 J/g°C)(0°C-30°C) = -6090 J in this scenario.

Therefore, the sum of the three heat energy calculations, i.e. 20900 J + 601 kJ - 6090 J = 54110 J, is used to compute the enthalpy change throughout the process in which 100 g of water at 50.0 °C is cooled to ice at -30 °C.  

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Density =mass/volume

=6/3

=2