Which statements below are true?Check all that apply.A. Distance measurements must include magnitude, unit, anddirection.B. Displacement can be fully described with a magnitude and a unit.C. If motion starts and stops at the same location, then thedisplacement is zero.D. Distance is always greater than or equal to the magnitude of medisplacement.

The evidence collected in the activity suggests that burning food outside the body is a form of oxidation, which is a reaction between food and oxygen inside the body. This reaction is responsible for the production of energy and the release of waste products.

Answer:

The answer is D

Explanation:

A polar molecule is when the electrons are not shared evenly, developing oppositely charged dipoles.

Answer:

I believe your answer would be grams.

Answer:

1.23*10^-6 g Au

Explanation:

take your atoms and divide by Avogadro's number to get number of moles

3.75 x 10^15 / 6.022 x 10^23 = 6.227 x 10^-9 moles

multiple the moles by molar mass of Au to get grams Au

6.227 x 10^-9 moles * 196.966 = 1.226*10^-6

round to 3 sig fig

I have no answer for you because we don't have the text either

The percentage yield would be 90.42%

First, the balanced equation of the reaction is as follows:

Ca₃(PO₄)₂ (s) + 3H₂SO₄ (aq) → 2H₃PO₄ (aq) + 3CaSO₄ (aq)

From the equation, the mole ratio of Ca₃(PO₄)₂ and H₃PO₄ is 1:2

Recall that: mole= mass/molar mass

Mole of Ca₃(PO₄)₂ = 23.7/310.174

                               = 0.076 mole

Mole ratio of Ca₃(PO₄)₂ and H₃PO₄ = 1:2

Mole of H₃PO₄ = 0.076 x 2

                         = 0.153 mole

Theoretical yield (in g) of H₃PO₄ = mole x molar mass

                                   = 0.153 x 97.994

                                   = 14.82 g

Percentage yield of H₃PO₄ = actual yield/theoretical yield x 100

                                         = 13.4/14.82 x 100

                                         = 90.42%

More on percentage yield of reactions can be found here: brainly.com/question/20758645

Taking into account the definition of pH, the [H⁺] in the rain is 100 times greater than in a cup of coffee.

pH is the Hydrogen Potential. It is a measure of acidity or alkalinity that indicates the amount of hydrogen ions present in a solution or substance.

Mathematically, pH is calculated as the negative base 10 logarithm of the activity of hydrogen ions:

pH= - log [H⁺]

The numerical scale that measures the pH of substances includes the numbers from 0 to 14. The pH value 7 corresponds to neutral substances. Acidic substances are those with a pH lower than 7, while basic substances have a pH higher than 7.

In this case, you know:

You can replace this values in the definition of pH:

Solving:

Comparing [H⁺], you get:

\(\frac{1x10^{-3} }{1x10^{-5} } =100\)

Finally, the [H⁺] in the rain is 100 times greater than in a cup of coffee.

Learn more about pH:

https://brainly.com/question/26424076

https://brainly.com/question/26524338

https://brainly.com/question/13557815

https://brainly.com/question/24595796

https://brainly.com/question/24753206

The pressure of the chlorine gas at the given condition is 1.7 atm.

The pressure of the chlorine gas at the given condition is calculated by applying ideal gas law.

PV = nRT

where;

The number of moles of 25 g of chlorine is calculated as follows;

n = m/M

n = 25/71

n = 0.352

The pressure of the chlorine gas at the given condition is calculated as;

P = nRT/V

P = (0.352 x 0.0821 x 263) / (4.5)

P = 1.7 atm

Learn more about pressure of gas here: https://brainly.com/question/25736513

#SPJ1

Answer:

Almost all corn oil is expeller-pressed

Explanation:

then solvent-extracted using hexane or 2-methylpentane (isohexane). The solvent is evaporated from the corn oil, recovered, and re-used. After extraction, the corn oil is then refined by degumming and/or alkali treatment, both of which remove phosphatides.Oct 16, 2020

1x+cb=23

thios  is right because math

Answer:

DNA is an organism's genetic fingerprint because it contains unique genetic information that determines its development, function, and reproduction. This unique DNA sequence can be used for identification purposes, such as establishing paternity or maternity, identifying suspects in criminal investigations, and identifying remains in forensic investigations. The field of forensic science uses DNA analysis to compare DNA profiles from crime scenes to those of potential suspects, resulting in the conviction of many criminals who would have otherwise gone unpunished.

There are approximately \(2.76 * 10^{24\) ammonia molecules in the given sample.

To calculate the number of ammonia molecules in the sample, we need to use Avogadro's number and the molar mass of ammonia.

The molar mass of ammonia \((NH_3)\) can be calculated by adding up the atomic masses of nitrogen (N) and hydrogen (H):

Molar mass of \(NH_3\) = (1 x atomic mass of N) + (3 x atomic mass of H)

              = (1 x 14.01 g/mol) + (3 x 1.01 g/mol)

              = 14.01 g/mol + 3.03 g/mol

              = 17.04 g/mol

Now, we can calculate the number of moles of ammonia in the sample using the formula:

Number of moles = Mass of the sample / Molar mass

Number of moles = 78.25 g / 17.04 g/mol

              ≈ 4.5865 mol (rounded to four decimal places)

Finally, we can use Avogadro's number, which represents the number of particles (atoms, molecules, etc.) in one mole of a substance. Avogadro's number is approximately \(6.022 * 10^{23\) particles/mol.

Number of ammonia molecules = Number of moles x Avogadro's number

Number of ammonia molecules ≈ 4.5865 mol x (\(6.022 * 10^{23\) molecules/mol)

                           ≈ \(2.76 * 10^{24\) molecules (rounded to two significant figures)

Therefore, the provided sample contains roughly \(2.76 * 10^{24\) ammonia molecules.

Learn more about moles on:

https://brainly.com/question/24748125

The number of ammonia molecules in the sample is approximately 2.764 x \(10^{24}\) molecules.

To calculate the number of ammonia molecules in a given sample, we need to use Avogadro's number and the molar mass of ammonia.

The molar mass of ammonia (NH3) is calculated as follows:

Molar mass of N = 14.01 g/mol

Molar mass of H = 1.01 g/mol

Total molar mass of NH3 = 14.01 g/mol + (3 * 1.01 g/mol) = 17.03 g/mol

Now, we can calculate the number of moles of ammonia in the sample:

Number of moles = Mass of sample / Molar mass of NH3

Number of moles = 78.25 g / 17.03 g/mol = 4.594 moles

Next, we use Avogadro's number, which states that there are 6.022 x \(10^{23}\) molecules in one mole of a substance.

Number of molecules = Number of moles * Avogadro's number

Number of molecules = 4.594 moles * 6.022 x \(10^{23}\) molecules/mol = 2.764 x \(10^{24}\) molecules

Therefore, there are approximately 2.764 x \(10^{24}\) ammonia molecules in the given sample of 78.25 g.

Know more about Avogadro's number here:

https://brainly.com/question/1513182

#SPJ8

Answer:

atm

kPa

torr

mmHg

Answer:

C

Explanation:

Well Its called reaction force,  so that helps you figure out what direction she would go towards. When you use anything that has reaction force what way are they normally going? So thats why she stayed still.

a) The rate law for reaction is Rate = k[A]² [B]⁰

b) the rate constant is  k =  4  × 10⁻³

a) For the Rate law for reaction

the equation is given as:

   A  +  B    ----->    C   +   D

Rate =  k[A]^x[B]^y

in equation (1) and (2)

4.0 × 10⁻⁵  = k[0.1]^x[0.1]^y    equation (1)

4.0 × 10⁻⁵ = k[0.1]^x[0.2]^y equation (2)

equation (2) / (1)          

(2)⁰ = (2)^y

y= 0

now ,from  (1) and (3)

4.0 × 10⁻⁵  =  k[0.1]^x [0.1]^y      equation (1)

16.0 × 10⁻⁵  = k[0.2]^x [0.1]^y      equation (2)

equation (2) / equation (1)

4 = (0.2)^x / (0.1)^y

(2)²  =  (2)^x

x = 2

therefore ,

Rate = k[A]² [B]⁰

b) Rate = k[A]² [B]⁰

   4 × 10⁻⁵  =   k[0.1]² [0.1]⁰

    4  ×  10⁻⁵  =  k (0.01)

  k  =  4  × 10⁻⁵ / 0.01

  k  =  4  × 10⁻³

Thus, a) The rate law for reaction is Rate = k[A]² [B]⁰

         b) the rate constant is  k =  4  × 10⁻³

To learn more about Rate law here

https://brainly.com/question/27160357

#SPJ1

Answer:

Explanation: Tissue if I'm not mistaken

A group of a similar cells that perform a particular function is called a tissue.

This is the aggregation of cells which have the same type of structure and therefore performs the same type of function through what is referred to as cell specialization.

The organ is also formed from the aggregation of tissues and is necessary so as to ensure that biochemical activities in the body are performed optimally.

Read more about Tissues here https://brainly.com/question/25331705

#SPJ1

The option (d) is correct- H₂O has the highest boiling point.

What is boiling point?

The boiling point of any liquid is reached at this temperature. The temperature at which a liquid's vapor pressure reaches atmospheric pressure is known as the boiling point of the liquid. The liquid turns into a vapor at this temperature.

What is compounds ?

A material created through the chemical bonding of two or more distinct components. Water (H2O), which is a compound of the elements hydrogen and oxygen, and table salt (NaCl), which is a composite of the elements sodium and chloride, are two examples of compounds.

Therefore, option (d) is correct- H₂O has the highest boiling point.

Learn more about boiling point from the given link.

https://brainly.com/question/24675373

#SPJ4

Copper metal has a mole weight of 0.45 moles. the complementary interaction of copper and aluminum. 0.45 moles of copper nitrate.

Sodium is created when sodium chloride and silver nitrate combine. Next, we must determine how many moles of each reactant there are. This molarity concentration unit connects moles of solute to volume of solution. Chemical processes are expressed in terms of moles of reactants and products. Aluminum oxide is created when aluminum and oxygen react.  The lowest set of whole number coefficients in a balanced equation.

to know more about copper nitrate please visit.

https://brainly.com/question/12768349

#SPJ4

Answer:

The water/alcohol solvent caused the dots to move the most. The oil solvent

Explanation:

The compound has the molecular formula CH₄O. H : O = 1 : 4 : 1 As a result, the empirical formula is CH₄O.

The organic compound sample's mass is 0.5 g, or (0.188 + 0.062 + 0.25) The vapor density should not have a unit.

The organic compound has a molar mass = 16 × 2 g/mol

                                                                            = 32 g/mol

Moles of C atoms = (32 g) × (0.188/0.5) / (12 g/mol) = 1

Moles of H atoms = (32 g) × (0.062/0.5) / (1 g/mol) = 4

Moles of O atoms = (32 g) × (0.25/0.5) / (16 g/mol) = 1

Hence, molecular formula = CH₄O

Thus, the compound has the molecular formula CH₄O. H : O = 1 : 4 : 1 As a result, the empirical formula is CH₄O.

Organic molecules contain covalently bound carbon and hydrogen as well as frequently additional elements. Benzoic acid, diethyl malonate, propanoic acid, butanoic acid, malonic acid, amines, heterocyclic compounds, and benzoic aldehyde are all examples of organic compounds. Organic substances include the carbohydrates, fats (lipids), proteins, and nucleic acids that make up the components of life. Organic molecules include petroleum and natural gas, which constitute the majority of fossil fuels.

Learn more about organic compounds :

brainly.com/question/5994723

#SPJ1

Answer:

4 m/s

Explanation:

formula is v = (KE/.5m)^1/2

there is a calculator

https://www.calculatorsoup.com/calculators/physics/kinetic.php

Answer:Nitrogen can be transformed into oxygen by bombarding an alpha particle into the nucleus of nitrogen. An atom of hydrogen is produced as part of the transformation. Aluminum is transformed into phosphorous by combining the nucleus with an alpha particle

Explanation:

Answer:

c. or b._____________

Explanation:

correct me

When a chocolate bar is solid, it is able to smell it.  It is also important to note that a substance 's molecules cannot be in two distinct phases at the a time.

In general, it is not possible for a the molecules of the chocolate  to be in two distinct phases at the same time.

It must be noted that smelling a solid, such as a chocolate bar, however, mean  the release  of loose molecules from the solid,   which may then move   through the air and   reach our olfactory receptors in our nose, allowing us to sense the fragrance.

Learn more about phase transition:
https://brainly.com/question/29795670
#SPJ1

- In reactions 1 and 2, the highlighted atom (oxygen) is reduced.

- In reaction 3, the highlighted atom (sulfur) is neither oxidized nor reduced.

- In reaction 4, the highlighted atom (oxygen) is reduced.

In the given chemical reactions, we need to identify whether the highlighted atom is being oxidized or reduced. Let's analyze each reaction individually:

Reaction 1: 4 HF (g) + SiO₂ (s) → SiF₄ (g) + 2 H₂O (g)

In this reaction, the highlighted atom is oxygen (O). Oxygen in SiO₂ undergoes a change in oxidation state from -2 to 0 in SiF₄. Therefore, the highlighted atom (oxygen) is reduced.

Reaction 2: 2 Cl (aq) + 2 H₂O (l) → 2 OH (aq) + H₂ (g) + Cl₂ (g)

In this reaction, the highlighted atom is oxygen (O). Oxygen in H₂O undergoes a change in oxidation state from -2 to -1 in OH. Therefore, the highlighted atom (oxygen) is reduced.

Reaction 3: H₂S (aq) + 2 NaOH (aq) → Na₂S (aq) + 2 H₂O (l)

In this reaction, the highlighted atom is sulfur (S). Sulfur in H₂S undergoes a change in oxidation state from -2 to -2 in Na₂S. Therefore, the highlighted atom (sulfur) is neither oxidized nor reduced.

Reaction 4: 2 H₂ (g) + O₂ (g) → 2 H₂O (g)

In this reaction, the highlighted atom is oxygen (O). Oxygen in O₂ undergoes a change in oxidation state from 0 to -2 in H₂O. Therefore, the highlighted atom (oxygen) is reduced.

To summarize:

- In reactions 1 and 2, the highlighted atom (oxygen) is reduced.

- In reaction 3, the highlighted atom (sulfur) is neither oxidized nor reduced.

- In reaction 4, the highlighted atom (oxygen) is reduced.

It's important to note that oxidation and reduction involve changes in the oxidation state of atoms, indicating the gain or loss of electrons. The analysis above is based on the change in oxidation state of the highlighted atom in each reaction.

for more questions on oxidized

https://brainly.com/question/13182308

#SPJ8