Like a diet low in sodium and favoring whole grains is called

Answer:

each compound or molecule is indicated in subscript next to the compound by an abbreviation in parentheses. For example, a compound in the gas state would be indicated by (g), solid (s), liquid (l), and aqueous (aq).

Explanation:

Answer:

This question is incomplete

Explanation:

This question is incomplete because of the absence of attachment to show what is being referred to in the question. However, the difference in elevation from two points on the same "plane" can be calculated by subtracting the total distance from where the measurement started to point C from the total distance from where the measurement started to point D. Both measurements must have started from the same origin (usually zero).

Answer:

hsvrirdhbrkshdbejdkjf

Explanation:

fndvizhdjevsixndbs

Answer:

Percentage recovery of acetylferrocene = 81.6%

Explanation:

Mass of the sample mixture = 22.092 g

Ratio of mixture of acetylferrocene and ferrocene = 1 : 1

This means that the sample conatains equal amounts of acetylferrocene and ferrocene.

Therefore the mass of each sample in the mixture = 22.092 g / 2 = 11.046 g

Mass of acetylferrocene recovered = 9.017 g

Percentage recovery of acetylferrocene = (mass of recovered/ mass in sample) * 100%

Percentage recovery of acetylferrocene = (9.017 g / 11.046 g) *100%

Percentage recovery of acetylferrocene = 81.6%

We will first convert the given distance from angstroms to meters, and then round our answer to three significant figures as required by the question.

The first step is to convert the given distance of 1.27Å to meters.

1 Å (angstrom) = 1 × 10^-10 m

Therefore,

1.27 Å = 1.27 × 10^-10 m

This is the distance between the atoms in meters. However, the question asks us to express the answer in three significant figures.

Since 1.27 has three significant figures, our final answer should also have three significant figures.

Rounding 1.27 × 10^-10 to three significant figures gives:

1.27 × 10^-10 m

Therefore, the distance between the atoms of H−Cl is 1.27 × 10^-10 m.

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Answer:

the answer would be B :)

The correct answer is; Bonds create new elements

Chemical bonds are formed when two or more atoms are joined together to form a compound.

Chemical compounds are more stable than the respective elements from which they are formed.

Chemical bonds do not create new elements.

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A air mass is a homogenous volume of air defined based on its temperature, and moisture characteristics. Option b.

In other words, it is a large body of air that has similar temperature, humidity, and pressure at any given height in the atmosphere.

These characteristics are determined by the region where the air mass originates, so air masses from different parts of the world have distinct properties. These characteristics are determined by the region over which the air mass forms, and they can be modified as the air mass moves over different types of surfaces, such as land or water.

Air mass can cover large areas and can have a significant impact on weather patterns such as moisture as they move across the Earth's surface.

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The number of moles of the weak acid in the solution is 0.00359

Calculation:

1. The number of mole of KOH in the solution:

Given:

Molarity of KOH = 0.0849 M

Volume = 42.35 mL = 42.35 / 1000 = 0.04235 L

Mole of KOH = Mole = Molarity x Volume

                      = 0.0849 ×  0.04235

                      = 0.00359 mole

2. The number of mole of a weak acid, HA:  

Balanced equation:

HA + KOH → KA + H₂O

From the above equation, A mole of HA and a mole of KOH react together. Therefore,

0.00359 moles of HA will also react with 0.00359 moles of KOH.

0.00359  moles of base use = 1/1 x 0.00359 = 0.00359 moles of HA

Thus, there are 0.00359 moles of a weak acid in the solution.

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Answer:

Malleability is a capability of making shaped or extended by hammering.

For example:

making a a ring of gold by hammering and heating gold.

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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Answer:

E=mc^2 is correct answer, last one

Explanation:

Hope it will help you

If the bonding in [MnO₄]⁻ is 100% ionic, then the charges on the Mn and O atoms are +7 and -2 respectively. To determine the charges on Mn and O in MnO₄⁻, we need to determine the oxidation state of each atom.

To do that, we need to use the oxidation state of oxygen, which is -2 in almost all compounds except for peroxides (H₂O₂) and superoxide (KO₂, RbO₂, CsO₂) and a few others.

Now, let's assume the oxidation state of Mn is x. The total oxidation state of  MnO₄⁻ is -1, so we can write: x + 4(-2) = -1x - 8 = -1x = +7

This means the oxidation state of Mn in  MnO₄⁻ is +7, or Mn(VII). Now that we know the oxidation state of Mn, we can find the oxidation state of each O atom: Oxygen has an oxidation state of -2,  so 4 O atoms will have a combined oxidation state of -8 (-2 x 4 = -8).We know the total oxidation state of MnO₄⁻ is -1, so we can write:+7 + (-8) = -1

This means that the total oxidation state of  MnO₄⁻ is -1. Now we can find the oxidation state of the last O atom:+7 + (-2) x 3 + x = -1x - 5 = -1x = +4 . The oxidation state of the last O atom is +4, or O(IV).

Therefore, if the bonding in  MnO₄⁻ is 100% ionic, the charges on the Mn and O atoms are +7 and -2 respectively.

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The number of moles of  C6H18O3 that can be formed is 2 and 264grams of CO2 can be formed from C6H18O3.

Given the substance C6H18O3

Mass of C6H18O3 available (m) = 22.73decagrams = 227.3g

Molar mass of C6H18O3 (M) = 131.28g/mol

We know that number of moles is taken as = mass of substance/Molar mass of that substance

So, number if moles of C6H18O3 = 227.3/138.21 = 1.72

From the reaction: C6H18O3 + 9O2 → 6CO2 + 9H2O

We can see that for every 1 mole of C6H18O3 6 moles of CO2 is formed.

So the mass of CO2(carbon dioxide) used is calculated as:

mass = moles of CO2 x Molar mass of CO2

Molar mass of CO2 = 44g/mol

mass of CO2 = 6 x 44 = 264g

Hence the required mass of CO2 is 264g

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Answer:

Magnesium nucleus will attract the electrons more toward it and therefore, shrinking the size of the atom. Magnesium atom is smaller than Calcium atom because Calcium has more electron ( 20e− ) which will occupy more energy levels ( n=4 for Calcium versus n=3 for Magnesium)

The solubility of oxygen at 10m depth below sea level, 25 degrees Celsius, and 30 g/L salinity is approximately 6.59 mg/L.

To calculate the solubility of oxygen at a specific depth below sea level, temperature, and salinity, we can refer to the oxygen solubility tables. The solubility of oxygen can vary depending on these factors.

1. Begin by identifying the given parameters:
  - Depth: 10m below sea level
  - Temperature: 25 degrees Celsius
  - Salinity: 30 g/L

2. Use the given parameters to locate the corresponding values in the oxygen solubility table.

3. The solubility of oxygen at a depth of 10m below sea level, 25 degrees Celsius, and 30 g/L salinity is typically around 6.59 mg/L.

Therefore, the solubility of oxygen at 10m depth below sea level, 25 degrees Celsius, and 30 g/L salinity is approximately 6.59 mg/L.

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The oxygen solubility at 10m depth below sea level, 25°C, and 30 g/L salinity is approximately 1538 mol/L.

To calculate the oxygen solubility at a specific depth below sea level, temperature, and salinity, we can use the solubility formula.

The solubility of a gas decreases with increasing temperature and salinity, and increases with increasing pressure.

Here's how you can calculate the oxygen solubility at 10m depth below sea level, 25°C, and 30 g/L salinity:

1. Determine the pressure at 10m depth below sea level: -

The pressure at sea level is approximately 1 atmosphere (atm).

The pressure increases by approximately 1 atm for every 10 meters of depth.

Therefore, at 10m depth, the pressure is approximately 2 atm.

2. Convert the temperature to Kelvin: -

To convert from Celsius to Kelvin, add 273 to the temperature.

25°C + 273 = 298 K.

3. Use the solubility formula:

The solubility of oxygen in water can be calculated using Henry's law:

S = k * P * C.

S is the solubility of oxygen in moles per liter (mol/L).

k is the Henry's law constant for oxygen in water at a specific temperature and salinity.  

P is the partial pressure of oxygen in atmospheres (atm).

C is the concentration of oxygen in moles per liter (mol/L).

4. Look up the Henry's law constant for oxygen at 25°C and 30 g/L salinity:

The Henry's law constant for oxygen at 25°C and 30 g/L salinity is approximately 769 L*atm/mol.

5. Calculate the solubility:  

S = (769 L*atm/mol) * (2 atm) * (1 mol/L). - S ≈ 1538 mol/L.

Therefore, the oxygen solubility at 10m depth below sea level, 25°C, and 30 g/L salinity is approximately 1538 mol/L.

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1.78 grams of silver can be produced from 1.40 g silver nitrate and excess copper. The balanced chemical equation for the reaction of copper with silver nitrate (use cu2) is as follows: Cu + 2AgNO₃ → Cu(NO₃)₂ + 2Ag

To determine how many grams of silver can be produced from 1.40 g of silver nitrate and excess copper, we first need to calculate the limiting reactant.

The stoichiometry of the reaction is such that 2 moles of silver nitrate react with 1 mole of copper to produce 2 moles of silver. The molar mass of silver nitrate is 169.87 g/mol while that of copper is 63.55 g/mol,

therefore, the number of moles of silver nitrate present in 1.40 g can be calculated as follows:Number of moles of silver nitrate = mass/molar mass= 1.40/169.87= 0.008240 molSimilarly, the number of moles of copper required to react with this quantity of silver nitrate is 0.004120 mol (half of the number of moles of silver nitrate).

Since there is an excess of copper, it will not limit the reaction and hence the limiting reactant is silver nitrate.To calculate the mass of silver produced, we use the molar mass of silver, which is 107.87 g/mol.Mass of silver produced = number of moles of silver x molar mass= 0.01648 x 107.87= 1.78 g

Therefore, 1.78 grams of silver can be produced from 1.40 g silver nitrate and excess copper.

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Answer:

A push or pull is referred to as a force. Forces can cause objects to move, slow, stop, or change the direction in which they travel. The force of gravity, for example, pulls all objects toward the Earth's center. Every time two things interact, a force is exerted on each of them. When this happens, the two items no longer feel the force after the interaction ends.

Explanation:

Force is that external physical cause which changes or tends to change:

hope this helps you.

Answer:

The correct answer is - D C2H4.

Explanation:

Saturated hydrocarbons are hydrocarbons with single covalent C-C bonds. They are known as alkanes. The general formula for these hydrocarbons is  CnH2n+2

Unsaturated hydrocarbons the hydrocarbons with double or triple covalent C-C bonds. They are known as alkenes and alkynes respectively. The general formula for these hydrocarbons is  CnH2n and CnHn-2

For the given options:

Option D: C2H4, is the simplest alkene with a double bond so it is an unsaturated hydrocarbon.

Answer:

CH4+2O2→CO2+2H2O 

Explanation:

CH4+2O2→CO2+2H2O 

The pH of a solution is a measure of its acidity or alkalinity. Using the pH formula, the pH values can be calculated for different concentrations of HCl, a strong acid. Therefore,

a. 0.01 M HCl has a pH of approximately 2.

b. 0.0000001 M HCl has a pH of approximately 7.

c. 1 M HCl has a pH of 0.

The pH of a solution can be calculated using the formula pH = -log[H⁺], where [H⁺] represents the concentration of hydrogen ions in moles per liter (M). Using this formula, we can calculate the pH for each given concentration of HCl:

a. 0.01 M HCl:

Since HCl is a strong acid that dissociates completely in water, the concentration of hydrogen ions is equal to the concentration of HCl. Therefore, the pH can be calculated as:

pH = -log(0.01) ≈ 2

b. 0.0000001 M HCl:

Similarly, for this concentration, the pH can be calculated as:

pH = -log(0.0000001) ≈ 7

c. 1 M HCl:

Again, since HCl is a strong acid that dissociates completely, the concentration of hydrogen ions is equal to the concentration of HCl. The pH can be calculated as:

pH = -log(1) = 0

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Answer:

C....  - Determining the half reactions of chemical equations

Explanation:

Try It... -

Answer:

the answer is C

Explanation:

The pH value of the apple juice is 3.5 and The pH value of ammonia is: 8.5.

pH can be calculated using the following equation

pH = -log [H₃O⁺]

for apple juice the hydronium /hydrogen ion concentration is 0.0003

pH = -log (0.0003)

pH = 3.5

The pH value of the apple juice is 3.5

For ammonia

pH = -log (3.1 x 10⁻⁹)

pH = 8.5

The pH value of ammonia is: 8.5

NB: Not available in the option.

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The concentration of Ca(OH)2 in the solution is approximately 1.33 x 10^(-6) M.

To find the concentration of Ca(OH)2 in a solution with a pH of 8.57, we need to use the concept of pOH, which is the negative logarithm of the hydroxide ion concentration ([OH-]). The pOH can be calculated by subtracting the pH from 14, which gives us 14 - 8.57 = 5.43.

Since Ca(OH)2 produces two OH- ions for every molecule of Ca(OH)2 that dissolves, the concentration of OH- ions will be twice the concentration of Ca(OH)2. Thus, we have [OH-] = 2x, where x represents the concentration of Ca(OH)2.

Taking the antilogarithm of the pOH, we find that [OH-] = 10^(-pOH) = 10^(-5.43).

Since [OH-] = 2x, we can write 2x = 10^(-5.43) and solve for x.

x = (10^(-5.43))/2 ≈ 1.33 x 10^(-6) M

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Answer:the parts of the body which is nearest to  the ground ie thier back will show discoloration

Explanation:

If the body remains at a position for long hours, the parts of the body which is nearest to  the ground can develop a skin discoloration as a result of pooling of blood in the tissues and this is called livor mortis, which tends to be permanent from 8Hours upwards.

Let's consider the following nuclear decay reaction: Uranium-238 → Thorium-234 + Helium-4

In this reaction, Uranium-238 undergoes alpha decay, where it loses an alpha particle (consisting of two protons and two neutrons) to form Thorium-234 and Helium-4.

This means that Uranium-238 has undergone transmutation, as it has transformed into a different element (Thorium-234) through the process of alpha decay.

Transmutation refers to the conversion of one element into another through nuclear reactions.

Thus, in this case, the uranium nucleus has transformed into a thorium nucleus, which is a different element with a different number of protons. Therefore, the decay reaction involves transmutation.

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Your question seems incomplete, the probable complete question is:

Use the nuclear decay reaction

\(^1_0n+^{235}_{92}U--- > ^{141}_{56}Ba+^{92}_{36}Kr+3^1_0n\)

to answer the following questions. Does undergo transmutation? Explain your answer.

There is a different way to contribute to the CO₂ budget balance besides reducing or turning off this carbon, which would help reduce the amount of greenhouse gases in the atmosphere. However, that depends on the precise amount of carbon that the oceans, trees, and plants are absorbing.

The carbon sinks in the cycle have so far had plenty of extra capacity. In fact, since we began burning fossil fuels for energy after the Industrial revolution, about half of the carbon dioxide emissions released into the atmosphere have naturally cycled away again.

A quarter of this carbon dioxide dissolves in water, so the oceans have absorbed it. As they used sunlight to turn it into glucose and oxygen during photosynthesis, plants use up an additional quarter.

The airborne carbon that was captured now exists as trees or is buried in peat, grassland, and soils. It is submerged in the water, dissolving in the deep ocean, or drifting as sediment on the seafloor. In other words, the planet has improved.

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For a given reaction, Kc is the equilibrium constant based on the molar mass of reactants and products while Kp is the equilibrium constant based on the partial pressure of reactants and products.

The chemical reaction is given as,

4HCl + MnO₂ → MnCl₂ + 2H₂O +Cl₂

Generally, for a chemical reaction, the equilibrium constant can be usually defined as the ratio between the amount of reactant and the amount of product which is often used to determine the chemical behavior. Equilibrium constant is denoted as Kc.

Kp is defined as the equilibrium constant which is calculated from the partial pressures of a reaction equation. Kp is used to express the relationship present between product pressures and reactant pressures.

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Answer:0

Explanation: zero because it is the most stable form of oxygen in its standard state

Answer:

1.  7.86 × 10⁴ g

2.  7.86 × 10⁴ kg

3.  1.989 × 10¹³ mg

4.  1.989 × 10²⁸ kg

5.  1.989 × 10³³ g

Explanation:

The easiest way to make sure you have the right answer is to convert all units to the same unit.

A.  1.989 × 10¹³ mg = 1.989 × 10¹⁰ g

B.  7.86 × 10⁴ g

C.  1.989 × 10³³ g

D.  7.86 × 10⁴ kg = 7.86 × 10⁷ g

E.  1.989 × 10²⁸ kg = 1.989 × 10³¹

The correct order is B < D < A < E < C