what is the independent variable in which cleans teeth better baking soda or toothpaste

Answer:

Explanation:

In water, silver nitrate (AgNO3) dissolves to generate the ions Ag+ (silver) and NO3- (nitrate). When the substance is dissolved in water, the ions are separated and become solvated, or surrounded by water molecules. Water molecules' oxygen atoms join the metal ion in a coordinate covalent bond that gives the metal ion a pair of electrons. By preventing it from interacting with other ions or molecules in the solution, this aids in stabilising the metal ion. As a result of their hydrogen bonds with the water molecules around them, the nitrate ions are likewise stabilised in solution.

Electrons in metals are delocalised. Electrons in ionic bonds are transferred from a metal to a non-metal. Electrons in a covalent bond are shared between two non-mtal ions.

- Eddie

Answer:

6.4 L

Explanation:

As the temperature and pressure are assumed to remain the same, we can solve this problem by using Avogadro's law, which states:

Where in this case:

We input the data given by the problem:

And solve for V₂:

Answer:

Explanation:

We can solve this using Gay Lussac's law which states that the pressure of a given mass of gas is directly proportional to it's temperature in kelvin. This law can be illustrated using the formula below

P₁/T₁ = P₂/T₂

where P₁ = 101.3 kPa

P₂ = 191.0 kPa

T₁ = 373.15K

T₂ = ?

101.3/373.15 = 191/T₂

cross-multiply

T₂ = 373.15 x 191/101.3

T₂ = 703.57K

The temperature of the steam inside the pressure cooker is 703.57K

The temperature is  703.6 K.

The pressure of a given mass of gas is directly proportional to its  temperature at constant volume.

P1 = 101.3 kPa

P2 = 191.0 kPa

T1 = 373.15K

T2 = ?

Now;

P1/T1 = P2/T2

P1T2 = P2T1

T2 = P2T1/P1

T2 = 191.0 kPa × 373.15K/101.3 kPa

T2 = 703.6 K

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Based on the molecular structure of water and the physical state that water exists in at different temperatures, the molecular sketch that is correct is sketch A which is the solid state.

The correct option i

Solid, liquid, and gaseous are the three main physical states in which water can exist. Water can be found as ice or snow in a solid state. Water exists as steam or water vapor in the gaseous state.

In solids, the molecules of water are arranged in a fixed crystalline pattern.

In liquids, the molecules of water are free to move about but within a given limit by intermolecular forces.

As gases, the molecule is not held back by any intermolecular forces.

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Answer:

name four agricultural inputs are subsidized by the government

0.297 kJ of heat is needed to raise the temperature of 10g of aluminum from 22 degrees Celsius to 55 degrees Celsius.

The specific heat is the amount of heat per unit mass required to raise the temperature by one degree Celsius.

It is a measure of how much energy it takes to raise the temperature of a substance. It is the amount of heat necessary to raise one mass unit of that substance by one temperature unit.

It is given by the formula -

                                                  Q = mcΔT

where, Q = amount of heat

m = mass

c = specific heat

ΔT = Change in temperature

Given,

mass = 10g

c = 0.901J/g⁰C

Initial temperature (T₁) = 22⁰C

Final Temperature (T₂) = 55⁰C

Q = mcΔT

= 10 × 0.901 × (55 -22)

= 297.33 J = 0.297 kJ

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Answer:

11

Explanation:

Atomic number is the number of PROTONS an element has .

Answer:

We would need to give approximately 15 tablets to the animal.

Explanation:

To solve this problem, we need to first convert the weight of the animal from pounds to kilograms by dividing by 2.205. Then, we can use the desired dosage and weight in kilograms to calculate the total amount of medication needed. Finally, we can divide the total amount of medication needed by the amount of medication per tablet to determine the number of tablets needed.

So, let's start with converting the weight of the animal from pounds to kilograms:

```

54 pounds ÷ 2.205 = 24.49 kilograms (rounded to two decimal places)

```

Next, we can calculate the total amount of medication needed:

```

24.49 kg × 150 g/kg = 3,673.5 g (rounded to one decimal place)

```

We can convert the amount of medication needed from grams to tablets by dividing by the amount of medication per tablet:

```

3,673.5 g ÷ 250 g/tab = 14.69 tablets (rounded up to the nearest whole tablet)

```

Answer:

A.

Explanation:

In conclusion, an electrically neutral object is an object that has a balance of protons and electrons. In contrast, a charged object has an imbalance of protons and electrons. ... The type of charge(positive or negative) is determined by whether the protons or the electrons are in excess

Dear God, the person reading this is kind and I’m proud of them . Please help them live life to the fullest and bless her in their chosen field. Now, you’re on the clock.❤❤❤ In 9 minutes something will make you happy. Please share this with 15 people you love. Remember, . If I don’t get this back I’m obviously not a close friend. Now, I have a game for you, it’s been played since 1977. Once you read this, you have to send it to 15 people. Your next 5 days will be like this: Day 1 - you will wake up to the biggest shock of your life. Day 2 - you will cross paths with an old friend you have missed. Day 3 - you will find yourself with a lot of money. Day 4 - your day will be perfect. Day 5 - the person u like the most in your life will spend lots of time with you. If you don’t forward this, your next 5 days will be the exact

The empirical formula of the given ions and name of their compounds are given below:

Empirical formula is the simplest formula of a compound where the elements in the compounds are shown in their simplest combining ratios.

The empirical formula of some compound are equal to the molecular formula of the compound whereas in some other, compounds, the empirical formulas are multiples of the molecular formula.

The empirical formula of the given ions and name of their compounds are given below:

Cation: Co³⁺; Anion; PO³⁻ ; Empirical formula : CoPO₄; Name : Cobalt (iii) phosphate

Cation: Fe²⁺  Anion; CrO₄²⁻  Empirical formula : FeCrO₄ ; Name : Iron (ii) tetraoxochromate (vi)

Cation: Cu²⁺  Anion; OH⁻  Empirical formula : Cu(OH)₂ ; Name : Copper (ii) hydroxide

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Answer:

I think it's B

Explanation:

Oceans and Seas and the Water Cycle Completed. The oceans are, by far, the largest storehouse of water on earth — over 96% of all of Earth's water exists in the oceans. Not only do the oceans provide evaporated water to the water cycle, they also allow water to move all around the globe as ocean currents.

Good luck!

Answer:

34672.96 s

Explanation:

m = Mass of copper = 6.32 g

M = Molar mass of copper = 63.5 g/mol

F = Faraday constant = 96500 C/mol

The electrode equation would be

\(Cu^{2+}(aq)+2e^{-}=Cu(s)\)

Number of electrons = 2 = e

I = Current = 0.554 A

t = Time taken

Charge would be

\(Q=\dfrac{m}{M}eF\\\RightarrowQ=\dfrac{6.32}{63.5}\times 2\times 96500\\\Rightarrow Q=19208.82\ \text{C}\)

Charge is given by

\(Q=It\\\Rightarrow t=\dfrac{Q}{I}\\\Rightarrow t=\dfrac{19208.82}{0.554}\\\Rightarrow t=34672.96\ \text{s}\)

Time taken to deposit the copper is 34672.96 s.

Kinetic energy is the energy possessed by the body by virtue of its motion. The kinetic energy of a body depends on the body mass and velocity.

The formula for calculating the kinetic energy of a body is expressed as:

where:

m is the mass of the body

v is the velocity or speed of the body

Answer:

C. anion with charge 1-

Explanation:

Atoms of group 17 gain one electron and form anions with a 1− charge; atoms of group 16electrons and form ions with a 2− charge, and so on.

If a neutral atom has 17 electrons, what type of ion will it tend to form anion with charge 1-. Thus option C is correct.

Matter is defined as anything which takes space and mass called as Matter and these matter is made up of atom or any other element that make up of space and mass only.

Atoms are composed of  sub atoms like positively charged proton, neutral neutron, negatively charged electron which are bond together; proton and neutron present in nucleus at the center of the atom where as electron surround them.

A number of atoms are joined to form molecule, which are present in three form such as solid, liquid and gas, we cannot break atom which is the smallest unit of a matter.

A compound is a  molecule which are made up of number of atoms by forming a chemical bond, the bond may be  covalent bond, ionic bond, metallic bonds, coordinate covalent bonds.

Atoms of group 17 which gain one electron and it form anions with a 1− charge while atoms with group 16 electrons and form ions with a 2− charge. Thus option C is correct.

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The final temperature in Celsius of the metal block is 49°C.

Moles water = \(\frac{\text{Given mass}}{\text{Molar Mass}}\)

                     = \(\frac{0.48\ g}{18\ \text{g/mol}}\)

                     = 0.0266 moles  

Heat lost by water = 0.0266 mol x 44.0 kJ/mol

                                = 1.17 kJ

                                = 1170 J           [1 kJ = 1000 J]

Heat lost = Heat gained

Heat gained by aluminum = 1170 J  

1170 = 55 x 0.903 (T - 25) = 49.7 T - 1242  

1170 + 1242 = 49.7 T  

T = 48.5°C (49°C at two significant figures)

Thus from the above conclusion we can say that The final temperature in Celsius of the metal block is 49°C.

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Answer:

Atoms themselves do not have a smell. Molecules do.

Explanation:

What happens is that particular molecules bind to receptors in our nose, activating nerves, that then send signals to our brain, which we then interpret and perceive as “smells”. Different molecules bind to different receptors, which is why we can perceive a number of different smells

Answer:

sodium nitrite..

Explanation:

Answer:

Sodium nitrite is an inorganic compound with the chemical formula NaNO2. It is a white to slightly yellowish crystalline powder that is very soluble in water and is hygroscopic

Definition: An inorganic sodium salt having nitr...

ChEBI Name: sodium nitrite

Explanation:

Answer:

rise to an imbalance in Earth's energy budget

Explanation:

Increased atmospheric greenhouse gas concentrations give rise to an imbalance in Earth's energy budget by initially reducing the amount of emitted thermal infra-red radiation. The result of this imbalance is an accumulation of excess energy in the Earth system over time.

Answer:

Increased atmospheric greenhouse gas concentrations give rise to an imbalance in Earth's energy budget by initially reducing the amount of emitted thermal infra-red radiation. The result of this imbalance is an accumulation of excess energy in the Earth system over time.

Explanation:

hope it helps you

37.06 percent is the percent of water in the compound

What is Washing Soda ?

Washing soda, also known as sodium carbonate, is a white crystalline powder that is commonly used as a cleaning and laundry aid. It is a strong alkaline substance and has a high pH, making it an effective cleaning agent for removing dirt, grease, and stains. Washing soda is often used as a household cleaner for tasks such as removing grease from ovens and pots and pans, cleaning tile and grout, and unclogging drains. In laundry, it can be used to remove stubborn stains, brighten clothes, and soften hard water. Washing soda can also be used in industrial applications, such as in the manufacture of glass, paper, and soap. It is a water-soluble compound and is generally considered safe for use, although it should be handled with care and not ingested, as it is a strong alkali and can be harmful if ingested in large quantities.

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The growth of the new plant depicts the asexual reproduction characteristic. The characteristic that describes the growth of the new plant in Stephan's mother cutting a twig from a rose bush and planting it in the soil is asexual reproduction.

Asexual reproduction is the mode of reproduction by which organisms generate offspring that are identical to the parent's without the fusion of gametes. Asexual reproduction is a type of reproduction in which the offspring is produced from a single parent.

The offspring created are clones of the parent plant, meaning they are identical to the parent.The new plant in Stephan’s mother cutting a twig from a rose bush and planting it in the soil depicts the process of asexual reproduction, which is the ability of a plant to reproduce without seeds. In asexual reproduction, plants can reproduce vegetatively by cloning themselves using their roots, bulbs, or stems.

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Answer:

shale and siltstone

Explanation:

The Triceratops dinosaur fossils are approximately 70 million years old, because they are found in shale and siltstone that contain volcanic ash radiometrically dated at 70 million years.

Matter are anything that is made up of atoms. The quantity of matter can be observed only on the basis of mass and volume calculation. Therefore, in shale and siltstone, Scientists would most commonly find a fossil of triceratops.

Matter is a substance that has some mass and can occupy some volume. The matter is mainly used in science. Matter can be solid, liquid or gas.

Matter is anything that is made up of atoms. Anything around us that can be physically seen and touched are matter. Ice, water and water vapors are example of matter.

So as we saw that matter has some mass so mass can be measured in gram only. Mass can also be represented as number of molecules. We also saw that matter occupy some volume and that volume is measured only in liter.

Scientists would most commonly find a fossil of triceratops in shale and siltstone that contain volcanic ash radiometrically dated at 70 million years.

Therefore, in shale and siltstone, Scientists would most commonly find a fossil of triceratops.

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Answer:

it’s probably c

Explanation:

Answer:

C

Explanation:

I searched it up

Answer:

Mass is the quantity of matter in a physical body.

Explanation:

mass bro

Answer:

a coherent, typically large body of matter with no definite shape.

Explanation:

a mass of curly hair

Answer:

Democritus of Abdera

Explanation:

Leucippus of Miletus (5th century bce) is thought to have originated the atomic philosophy. His famous disciple, Democritus of Abdera, named the building blocks of matter atomos, meaning literally “indivisible,” about 430 bce.

Answer:true

Explanation:

Answer:

1.37x10²⁵atoms of carbon

2.74x10²⁵ atoms of oxygen.

33.7g of KNO₃

Explanation:

To answer this question you must use molar mass of carbon dioxide (44g/mol) and 1 mole are 6.022x10²³atoms.

1.00kg are 1000g of CO₂. Moles are:

1000g CO₂ * (1mol / 44g) = 22.73 moles of CO₂ = 22.73 moles of carbon.

In atoms:

22.73 moles C * (6.022x10²³atoms / 1mole) = 1.37x10²⁵atoms of carbon

There are 22.73 moles of CO₂ * 2 = 45.45 moles of oxygen are present in the carbon dioxide. In atoms:

45.45 moles Oxygen * (6.022x10²³atoms / 1mole) = 2.74x10²⁵ atoms of oxygen.

1 mole of Potassium nitrate, KNO₃, contains 3 moles of oxygen. 1 mol of oxygen are:

1.00 mol O * (1mol KNO₃ / 3 moles O) = 0.33 moles of KNO₃

As molar mass of KNO₃ is 101.1g/mol:

0.33 moles of KNO₃ * (101.1g / mol) = 33.7g of KNO₃

Answer:

1. 1.37 * 10^25 atoms of carbon

2. 2.74 * 10^25 atoms of oxygen

3. 33.67g of Potassium Nitrate

Explanation:

2. Firstly, we want to know the number of atoms of oxygen in 1 kg of carbon dioxide.

Firstly, we will need to know the number of moles of carbon iv oxide in 1kg of carbon iv oxide

Mathematically;

number of moles = mass/molar mass

molar mass of carbon iv oxide is 44 g/mol

mass here is 1000g (1kg is 1000g)

So the number of moles of CO2 in 1kg of CO2 will be; 1000/44 = 22.73 moles

Now 1 mole of CO2 contains 2 atoms of oxygen, thus 1 mole of CO2 contains 2 moles of oxygen

So the number of moles of oxygen in 1kg CO2 will be 2 * 22.73 = 45.46 moles

Mathematically, 1 mole contains 6.02 * 10^23 atoms

So 45.46 moles will contain =

6.02 * 10^23 * 45.46 = 2.74 * 10^25 atoms of oxygen

1. 1 mole of co2 contains 1 atom of carbon , thus, 1 mole of CO2 will

contain 1 mole of carbon

From above, 1kg of carbon iv oxide contains 22.73 moles , thus 1kg of carbon iv oxide will contain 22.73 moles of carbon too

So the number of atoms will be 22.73 * 6.02 * 10^23 = 1.37 * 10^25 atoms

3. Mass of KNO3 that contains 1 mole of oxygen atom

From the formula of the compound, we can see that 1 mole of KNO3 contains 3 atoms of oxygen which translates to 3 moles of oxygen

So 1 mole of oxygen will translate to 1/3 mole of KNO3

Mathematically;

mass = number of moles * molar mass

Molar mass of KNO3 = 39 + 14 + 3(16) = 39 + 14 + 48 = 101 g/mol

So the mass will be = 1/3 * 101 = 33.67g

Answer:

\(V_2=8L\)

Explanation:

Hello there!

In this case, considering the Avogadro's gas law, which treats the volume and moles in a directly proportional way via:

\(\frac{V_1}{n_1}=\frac{V_2}{n_2}\)

Which can be solved for the final volume, V2, as shown below:

\(V_2=\frac{V_1n_2}{n_1}\)

Thus, by plugging in the given data, we obtain:

\(V_2=\frac{4L*(0.250mol+0.250mol)}{0.250mol}\\\\V_2=8L\)

Regards!

The final total volume of gas is equal to 8 Liters.

Given the following data:

To determine the final total volume of gas, we would apply the Avogadro's equation for an ideal gas:

At constant temperature and pressure, Avogadro's equation for an ideal gas is given by this formula:

\(\frac{V_1}{n_1} = \frac{V_2}{n_2}\)

For the final total moles:

\(n_2=n_1+n_1\\\\n_2 = 0.250+0.250\\\\n_2=0.50\;mol\)

Making \(V_2\) the subject of formula, we have:

\(V_2 = \frac{V_1n_2}{n_1}\)

Substituting the given parameters into the formula, we have;

\(V_2 = \frac{4 \times 0.5}{0.25}\)

Final total volume = 8 Liters.

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Answer:

what are the questions?

Explanation:

Explanation:

molar mass total = 3 (molar mass of carbon) + (mm of oxygen) + 5 (molar mass of hydrogen)

=3 × 12 + 16 + 5 × 5.05

=57.08 g/mol

next we divide what we have in g/mol by what the original mass is

114.16/57.08

=2

therefore there must be two components if each atom doubling the mass

final formula=C6O2H10

the number 2 dot would be the answer

Answer:

Metals do not form double and triple bonds in general because metals want to lose electrons, not share, in order to become stable, and both compounds have high melting ppints

Compounds with metallic bonds and ionic compounds are similar in their melting point and boiling point, conductivity, solubility in polar solvents etc.

Ionic compounds are chemical compounds that are formed by the electrostatic attraction between oppositely charged ions.

Compounds with metallic bonds and ionic compounds are similar in several ways. Some of the similarities are:

1. High melting and boiling points: Both metallic and ionic compounds have high melting and boiling points due to the strong forces that hold the atoms or ions together.

2. Conductivity: Both metallic and ionic compounds are good conductors of electricity due to the presence of charged particles that can move freely.

3. Brittle: Ionic and metallic compounds are generally brittle in nature, meaning that they are prone to breaking or shattering when subjected to stress.

4. Solubility in polar solvents: Both metallic and ionic compounds are generally soluble in polar solvents such as water, due to the polar nature of the molecules.

In conclusion, compounds with metallic bonds and ionic compounds share several similarities. Both have high melting and boiling points, are good conductors of electricity, are brittle, and are generally soluble in polar solvents.

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