The diagram shows a duck swimming in a stream in the opposite direction the stream is flowing. The duck pushes against the water, so the water pushes the duck forward with 20 newtons of force. The water also exerts 15 newtons of resistive force against the duck.


v

The empirical formula of ethylene glycol is C2H6O2. This can be determined using the given information of the combustion reaction. Ethylene glycol is composed of carbon, hydrogen and oxygen. By calculating the molar ratios of the elements present in the products of the combustion reaction, we can find the molar ratios of the elements present in the reactants.

For carbon, the molar ratio in the products is 9.06/12 = 0.755. For hydrogen, the molar ratio in the products is 5.58/2 = 2.79. For oxygen, the molar ratio in the products is 18.12/16 = 1.13.
By dividing the molar ratios of the products by the lowest value, 0.755, we can get the ratios of the reactants:
Carbon = 1, Hydrogen = 3.71, Oxygen = 1.49
The empirical formula of ethylene glycol is therefore C2H6O2.

For such more questions on Ethylene glycol:

brainly.com/question/11994953

#SPJ11

A solution is defined as a mixture of two or more substances, usually, a solute and a solvent, and the difference between these two are in quantity, solute represents the smallest amount and solvent will represent the highest amount, and while you can have more than one solute, you can only have one solvent for a solution. Therefore the statement is true

According to the given picture:

A represents the atomic number.

B represents the chemical symbol.

C represents the atomic mass.

D represents the name of the element.

Answer: 62.4g according to a quizlet

Explanation:

Answer:

It produces carbon dioxide when an Alka-Seltzer tablet dissolves in water. In the bath, the carbon dioxide dissolves and then emerges as a gas from the solution.

This carbon dioxide gas has mass, but it escapes from the container and diffuses into the atmosphere because it is a gas.

The mass loss from the container is directly calculated by the analytical balance.

The correct answer is E. Electrons flow from the anode to the cathode through an external wire.

In an electrochemical galvanic cell, which consists of an anode and a cathode connected by an external circuit, a redox (reduction-oxidation) reaction takes place. During this reaction, oxidation occurs at the anode, resulting in the loss of electrons, while reduction occurs at the cathode, leading to the gain of electrons.

The movement of electrons in the cell is crucial for the flow of electrical current. Electrons flow from the anode (where oxidation occurs) to the cathode (where reduction occurs) through the external wire. This movement of electrons creates an electric current that can be harnessed for various purposes, such as powering electrical devices.

To learn more about Electron click here; brainly.com/question/12001116

#SPJ11

Answer:

58.316  is the formula weight of magnesium hydroxide

0.15l to one significant figure 0.1L.When we express a measurement to one significant figure, we round the value to the nearest number that has only one non-zero digit.

When we say "0.15L to one significant figure," what we mean is that we want to express the quantity 0.15L to the nearest order of magnitude. In other words, we want to round the value to a single significant digit. To do this, we look at the first non-zero digit in the number, which in this case is "1." We keep this digit and drop all the rest. Since the next digit after "1" is "5," which is greater than or equal to 5, we round up. Therefore, 0.15L to one significant figure is 0.1L. It's important to note that expressing a quantity to one significant figure means that we're sacrificing precision for simplicity. We're essentially saying that the exact value doesn't matter as much as the order of magnitude, and that the value is likely to be within a certain range of values rather than an exact value.

To learn more about significant figure here:

https://brainly.com/question/29153641

#SPJ1

Answer:

d. All of the above

Explanation:

Answer: Diploid Cells (?)

Explanation:

Answer:

No

as they are dispensed, during use, and as they are discarded

Explanation:

Suppose you spill a few drops of sulfuric acid solution on your sleeve, but there is no visible harm.

Can you be confident the fabric is safe?

No

The best way to protect yourself from such mishaps is to be mindful of the acid and base solutions

as they are dispensed, during use, and as they are discarded

Carboxylic acids are organic acids that contain the carboxyl functional group (–COOH) as their structural feature.  the structures of the carboxylic acids with the formula C6H12O2 that contain an ethyl group branching off the main chain are pentanoic acid and 3-methylbutanoic acid.

They can be found in various organic materials such as fruits, fats, and oils. The structure(s) of carboxylic acids with the formula C6H12O2 that contain an ethyl group branching off the main chain can be represented as follows:Two isomers can be possible for the given formula C6H12O2. They are pentanoic acid and 3-methylbutanoic acid.Pentanoic acid has a straight-chain of five carbon atoms (pentane) with a carboxyl group at one end and an ethyl group branching off from the fourth carbon atom. The structure of pentanoic acid is as follows:3-Methylbutanoic acid is a branched-chain carboxylic acid in which the carboxyl group is attached to the third carbon atom of a four-carbon chain, with an ethyl group attached to the second carbon atom. The structure of 3-methylbutanoic acid is as follows:Therefore, the structures of the carboxylic acids with the formula C6H12O2 that contain an ethyl group branching off the main chain are pentanoic acid and 3-methylbutanoic acid.

To know more about carboxylic acids visit:

https://brainly.com/question/4721247

#SPJ11

0.129569. You have to divide the mass value by 1000.

Approximately 7.598 grams of Fe2(SO4)3 are formed when 21.2260 mL of 906.6430 mM H2SO4 reacts completely with FeCl3.

To determine the number of grams of Fe2(SO4)3 formed, we need to consider the stoichiometry of the reaction between H2SO4 and FeCl3. The balanced equation for the reaction is as follows:

H2SO4 + 2 FeCl3 → Fe2(SO4)3 + 2 HCl

From the equation, we can see that 1 mole of H2SO4 reacts with 2 moles of FeCl3 to produce 1 mole of Fe2(SO4)3.

First, let's calculate the number of moles of H2SO4. We can use the given concentration (906.6430 mM) and the volume (21.2260 mL) to find the moles of H2SO4:

Moles of H2SO4 = Concentration * Volume

Moles of H2SO4 = 906.6430 mM * 21.2260 mL * (1 L / 1000 mL) * (1 mol / 1 L)

Moles of H2SO4 ≈ 0.019 mol

Since the reaction is stoichiometric, the moles of Fe2(SO4)3 formed will be equal to the moles of H2SO4 reacted. Therefore, approximately 0.019 moles of Fe2(SO4)3 are formed.

To calculate the mass of Fe2(SO4)3, we can use its molar mass. Fe2(SO4)3 has a molar mass of 399.88 g/mol.

Mass of Fe2(SO4)3 = Moles of Fe2(SO4)3 * Molar mass of Fe2(SO4)3

Mass of Fe2(SO4)3 ≈ 0.019 mol * 399.88 g/mol

Mass of Fe2(SO4)3 ≈ 7.598 g

Therefore, approximately 7.598 grams of Fe2(SO4)3 are formed when 21.2260 mL of 906.6430 mM H2SO4 reacts completely with FeCl3.

To know more about stoichiometry, visit;

brainly.com/question/28780091

#SPJ11

The pH of a 0.0000001 Molar HCl solution is 7.

Since HCl is a strong acid, it dissociates completely in water to form H+ and Cl- ions.

The concentration of H+ ions in the solution will be equal to the concentration of the HCl, which is 0.0000001 Molar.

Using the pH scale, we can calculate the pH of this solution as follows:pH = -log [H+]pH = -log 0.0000001pH = 7

The pH of the solution is 7, which is neutral.

The pH of a 0.0450 Molar Ba(OH)2 solution is 12.

Since Ba(OH)2 is a strong base, it dissociates completely in water to form Ba2+ and OH- ions.

The concentration of OH- ions in the solution will be twice the concentration of Ba(OH)2, which is 0.0450 Molar.

Using the pH scale, we can calculate the pH of this solution as follows:pOH = -log [OH-]pOH = -log (2 x 0.0450)pOH = 1.34pH + pOH = 14pH = 14 - 1.34pH = 12.66

The pH of the solution is 12.66, which is basic.

For more question on molar

https://brainly.com/question/29424807

#SPJ8

Answer:

20.114%

Explanation:

Percent composition by element Element Symbol Mass Percent Copper Cu 79.886% Oxygen O 20.114%

Answer

13. c. Both a and b

The law of conservation of mass states that in a chemical reaction mass is neither created nor destroyed. This implies the mass of the reactants is equal to the mass of the products.

14. Based on the class set of data provided in the table, it can be concluded that what happened to the mass of the system is: b. The mass decreased.

15. The best explanation for what was observed is: c. The mass went down because the bubbles contained a gas that left the system.

A chemical reaction is most likely spontaneous if it is accompanied by (B) lowering energy and increasing entropy. This is because an instinctive reaction tends towards a state of lower energy and higher entropy.

A spontaneous reaction is a chemical reaction that occurs naturally without any external influence or intervention. This means that the response will occur independently, without needing additional energy or a catalyst.

Entropy is a thermodynamic quantity that describes a system's degree of randomness or disorder. In general, higher entropy is associated with more significant disorder or randomness.

To learn more about enthalpy, visit here:

https://brainly.com/question/3393755

#SPJ1

Fluorine accounts for 70.37% of the mass.

To find the percent of the mass that is from fluorine, we need to first find the mass of fluorine in the sample.

Mass of fluorine = Total mass of the sample - Mass of oxygen in the sample

⇒       Mass of fluorine = 0.432 g - 0.128 g = 0.304 g

Now, we can calculate the percent of the mass that is from fluorine using the formula:

% mass of fluorine = (Mass of fluorine / Total mass of the sample) x 100%

⇒      % mass of fluorine = (0.304 g / 0.432 g) x 100% = 70.37%

Therefore, approximately 70.37% of the mass in the sample is from fluorine.

The problem requires us to determine the percentage of the mass that is from fluorine in a sample containing only oxygen and fluorine. To do so, we first need to calculate the mass of fluorine in the sample by subtracting the mass of oxygen from the total mass of the sample. Once we know the mass of fluorine, we can use the formula for percent composition to calculate the percentage of the mass that is from fluorine. This problem emphasizes the importance of knowing how to calculate the percent composition of elements in a given compound or mixture.

To know more about the Mass, here

https://brainly.com/question/24233677

#SPJ4

The correct order of the increasing polarity of the analyte functional group isEthers < Esters.

The given statement is "Polarities of analyte functional group increase in the order of hydrocarbon ethers < esters."  The order of polarities of functional groups is the order of their increasing polarity (i.e., less polar to more polar) based on their electron-donating or withdrawing ability from the rest of the molecule.Polarity of analyte: The analyte's polarity is directly proportional to the dipole moment of the functional group, which is associated with a difference in electronegativity between the atoms that make up the functional group.The electronegativity of an element is its ability to attract electrons towards itself. The greater the difference in electronegativity between two atoms, the more polar their bond, and hence the greater the polarity of the molecule.

To find the correct order of the increasing polarity of the analyte functional group, let's first compare the two groups: hydrocarbon ethers and esters. Here, esters have a carbonyl group while ethers have an oxygen atom with two alkyl or aryl groups. The carbonyl group has more electronegative oxygen, which pulls electrons away from the carbon atom, resulting in a polar molecule. On the other hand, ethers have a less polar oxygen atom with two alkyl or aryl groups, making them less polar than esters. Therefore, the correct order of the increasing polarity of the analyte functional group isEthers < Esters.

To know more about polarity visit:-

https://brainly.com/question/33242453

#SPJ11

Answer:

All elements, and compounds, all matter in point of fact, are composed of atoms. In a compound, there are 2 or more different types of atoms present that are chemically bound. In an element, there is only the one type of atom.

Explanation:

In the 1H-NMR spectrum of 2-methylbut-2-ene, there are two different proton environments, one for methyl group and another for remaining hydrogens in the molecule.

In 1-bromo-4-chlorobutane, there are three different proton environments, corresponding to the four hydrogens on primary carbon,  two hydrogens on the secondary carbon, and the two hydrogens on tertiary carbon bearing halogens. In trans-2-pentene, there are two different proton environments, one for the terminal methyl group and another for  remaining hydrogens in molecule. The multiplicities of each proton environment in 2-methylbut-2-ene and trans-2-pentene would be a triplet and a quartet, respectively, due to coupling with adjacent hydrogens. The multiplicities of each proton environment in 1-bromo-4-chlorobutane would depend on  exact positions of the hydrogens and their coupling patterns.

To know more about 1-bromo-4-chlorobutane, here

brainly.com/question/28295758

#SPJ4

This problem can be solved using Boyle's Law, which states that the pressure and volume of a gas are inversely proportional when temperature is constant. The formula for Boyle's Law is P1V1 = P2V2, where P1 and V1 are the initial pressure and volume, and P2 and V2 are the final pressure and volume.

Using the formula:

P1V1 = P2V2

where P1 = 5.1 atm, V1 = 6.5 L, and V2 = 4.4 L, we can solve for P2:

P2 = (P1 x V1) / V2

P2 = (5.1 atm x 6.5 L) / 4.4 L

P2 = 7.57 atm

Therefore, the new pressure inside the piston will be 7.57 atm (rounded to two decimal places).

The correct balanced chemical equation is FeCl₃(aq) + Na₂S(aq) → 3Fe₂S₃(s) + 3NaCl(aq)

To achieve a chemical equation's balance:

Fe₂S₃ (s) + NaCl (aq) FeCl₃ (aq) + Na₂2S (aq)

Let's start by balancing the atoms of iron (Fe). The iron atoms are already balanced, since there are two on the reactant side and two on the product side.

Let's now balance the atoms of sodium (Na). Two sodium atoms are present on the reactant side, hence two sodium atoms are required on the product side. By adding a coefficient of 2 in front of NaCl, we may do this:

Let's balance the sulfur (S) atoms lastly.

FeCl3(aq) + Na2S(aq) → 3Fe2S3(s) + 3NaCl(aq)

Learn more about chemical equation, here:

https://brainly.com/question/14457720

#SPJ1

Answer:

2,400,000 torr (3 s.f.)

Explanation:

Convert the pressure from Pascal to atm first:

\(\boxed{1 \: atm = 101325 \:Pa }\)

3.20 ×10⁸ Pa

= [(3.20 ×10⁸) ÷101325] atm

= 3158.2 atm (5 s.f.)

Convert atm to torr:

\(\boxed{1 \: atm = 760 \: torr}\)

3158.2 atm

= (3158.2 ×760) torr

= 2400000 torr (3 s.f.)

NADH; ADP are being oxidized and phosphorylated.

A powerful electron carrier is NAD+. Its duty is to transport extremely energetic electrons from one location to another. In addition to absorbing the high-energy electrons, NADH is created by absorbing hydrogen. Once the electron and hydrogen atom have been delivered to their intended location, NADH can be transformed back into NAD+.

The breakdown of glucose into pyruvate during glycolysis results in the conversion of two NAD+ molecules into NADH. Lactic acid in humans and ethanol in yeast and plants are the byproducts of fermentation. NADH is changed back into NAD+ through the conversion of pyruvate into lactic acid or ethanol (as it releases its electrons and hydrogen atom). As a result, two NAD+ molecules are recycled during fermentation's glycolysis stage.

ADP, commonly known as adenosine diphosphate, is a substance created inside of living cells. It frequently undergoes conversion to adenosine triphosphate (ATP), a highly energetic molecule involved in numerous metabolic processes. Adenine (a nucleobase), ribose (a simple sugar), and two phosphate molecules make up ADP (phosphorous ions).

Learn more about NADH; ADP here:

https://brainly.com/question/29032077

#SPJ4

The E2 reaction proceeds with anti-periplanar stereochemistry, resulting in the formation of diastereomeric alkenes for alkyl halides (a) and (b). The products will have different configurations of alkene substituents, which should be drawn as regular lines.

An E2 reaction proceeds with anti-periplanar stereochemistry, meaning the leaving group and the hydrogen being eliminated must be on opposite sides of the molecule. To draw the products of each elimination for diastereomeric alkyl halides (a) and (b), follow these steps:
Step:1. Identify the leaving group (usually a halogen) and the hydrogen that will be eliminated (usually bonded to the adjacent carbon).
Step:2. Ensure that these groups are anti-periplanar (opposite sides) in the starting molecule.
Step:3. Remove the leaving group and the hydrogen, and form a double bond between the carbon atoms that were bonded to these groups.
Step:4. Draw the resulting alkene with substituents as regular lines, not dashes or wedges, as mentioned in your question.
Since the alkyl halides in (a) and (b) are diastereomers, their products will also be diastereomeric alkenes. Diastereomers are stereoisomers that are not mirror images of each other. This means that the products of these two reactions will have different configurations of their substituents around the double bond, but will not be mirror images.

Learn more about E2 reaction here, https://brainly.com/question/28239179

#SPJ11

According to Charle's law, the volume of the given mass of a gas is directly proportional to its absolute temperature provided that the pressure is constant. Mathemically;

where;

V1 and V2 are the initial and final volume of the gas

T1 and T2 are the initial and final temperatures of the gas (in Kelvin)

Given the following parameters:

Substitute the given parameters into the formula;

Therefore the volume of the gas at 20°C is approximately 97.67cm³

Answer:

A)Protons and electrons

Explanation:

An atom consist of electron, protons and neutrons. Protons and neutrons are present with in nucleus while the electrons are present out side the nucleus.

All these three subatomic particles construct an atom. A neutral atom have equal number of proton and electron. In other words we can say that negative and positive charges are equal in magnitude and cancel the each other. For example if neutral atom has 6 protons than it must have 6 electrons. The sum of neutrons and protons is the mass number of an atom while the number of protons are number of electrons is the atomic number of an atom.

when an atom lose or gain the electron ions are formed and number of protons and electrons no longer remain the same.

For example:

An atom of sodium when lose one electron it form positive ion. The number of electrons became 10 and number of protons remain 11.

Na → Na⁺ + 1e⁻