The diagram shows the layers formed when 10 mL each of honey, maple syrup, and corn syrup were slowly poured into a glass cylinder.

A tall cylinder with 3 layers is shown. The top layer is labeled Corn Syrup, the middle layer is labeled Maple Syrup and the bottom layer is labeled Honey.

A ping pong ball released gently into the cylinder floats on top of the corn syrup layer. What best compares the densities of the substances?

Group of answer choices

Honey is denser than corn syrup but less dense than the ball.

All liquids are denser than the ball, and honey is denser than corn syrup and maple syrup.

Corn syrup is denser than the other liquids, and the ball is denser than the liquids.

Corn syrup is denser than the other liquids and the ball.

Answer:

The difference between physical change and chemical change is that chemical reaction is composition there is a change in the composition substances in question. In a physical change, there is a difference in the appearence, smell, or simple display of a sample matter

Explanation:

answer:

high temperatures

hydrogen gas

Answer:

C and D

Explanation:

just did this on edg :)

Answer: 6,700

Explanation: took the test got it right :) (2020)

Answer:

B 6700

Explanation:

Answer: A system has reached equilibrium when the concentrations of reactants and products remain constant.

Explanation:

The reactions which do not go on completion and in which the reactant forms product and the products goes back to the reactants simultaneously are known as equilibrium reactions.

The equilibrium is dynamic in nature and the reactions are continuous in nature. Rate of forward reaction is equal to the rate of backward reaction.

Equilibrium state is the state when reactants and products are present but the concentrations does not change with time, that is the concentration remains constant.

Answer:

3.79 e+24

Explanation:

1 mol = 6.022*10^24 atoms

6.30 * ×[tex]\frac{6.022*10^2^3atoms}{1mol}[/tex] = 3.79386*10^24

The answer must have 3 sig figs

Answer:

C2H4O

Explanation:

The chemical molecular formula is C2H4O.

Also note*: Acetaldehyde is the chemical name for this structural formula.

Answer:

It helps identify trends and group elements with similar properties.

Explanation:

Arranging the elements according to the atomic mass wouldn't help us have groups and periods with predictable properties that we can have when arranging it according to atomic number. Don't forget that isotopes have different masses.

Answer:

Not only on the basis of atomic number its acctually on the basis of their electronic configuration, chemicals properties and physical properties.

Answer:

2.25×10¯³ mm.

Explanation:

From the question given above, we obtained the following information:

Diameter in micrometer = 2.25 μm

Diameter in millimetre (mm) =?

Next we shall convert 2.25 μm to metre (m). This can be obtained as follow:

1 μm = 1×10¯⁶ m

Therefore,

2.25 μm = 2.25 μm / 1 μm × 1×10¯⁶ m

2.25 μm = 2.25×10¯⁶ m

Finally, we shall convert 2.25×10¯⁶ m to millimetre (mm) as follow:

1 m = 1000 mm

Therefore,

2.25×10¯⁶ m = 2.25×10¯⁶ m /1 m × 1000 mm

2.25×10¯⁶ m = 2.25×10¯³ mm

Therefore, 2.25 μm is equivalent to 2.25×10¯³ mm.

Answer:

The answer is D. The Sun is the closest star to Earth and so it seems brighter than distant stars that have much greater absolute brightness.

Explanation: Stars like red super giants like beetleguise are way brighter and bigger than the sun, but the sun is closest to the earth. It is only in its main sequence stage but seems bright because of its short distance from the sun( 93 million miles).

There are billions of stars in the known universe, none of them seem to be as bright as the Sun beacuse the Sun is the closest star to Earth.

Stars are those astronomical bodies which are formed by the mixture of gases mainly of hydrogens and heliums, which are held by its own gravity.

In the universe or in the sky many stars are present which are luminous in appearance but among all of them only sun looks like more brighter, because the distance between the earth and the sun is not that much high as in between the other stars. That's why sun looks more brighter rather than other stars.

So, the Sun is the closest star to Earth and so it seems brighter than distant stars that have much greater absolute brightness.

To know more about sun, visit the below link:
https://brainly.com/question/15837114

Answer:

Explanation:

This question appears incomplete, however

The number of protons of an element/atom (atomic number) can be determined by checking for the position of the element on the periodic table. This is because elements are arranged according to there atomic number on the periodic table.

The number of electrons of any element (of a neutral atom) is equal to the number of protons of the same element.

The number of neutrons of an element/atom is determined by subtracting the atomic number of the element from it's mass number. Hence, mass number is the addition of the atomic number and the number of neutrons.

Ions are charged particles that have the same number of protons and neutrons as there parent atoms. Hence, they have different number of electrons when compared to there specific parent/neutral atom.

A negatively charged atom has more electrons than it's original atom. For example, fluoride ion (F⁻) has 10 electrons while fluorine atom has 9 electrons (meaning fluoride ion has one more electron than it's parent fluorine). The increase is dependent on the number "attached" to the charge. A positively charged atom has less electrons than it's original atom. For example, calcium ion (Ca²⁺) has 18 electrons while calcium atom has 20 electrons (meaning the calcium ion has 2 electrons less than it's parent calcium atom). As said earlier, the decrease here is also dependent on the number "attached" to the charge.

The rule used for the determination of the protons, electrons, and neutrons has been the equal number of protons and electrons, while the number of the neutrons has been the difference in the atomic mass and the protons.

The atom has been the smallest particle that has comprised of electrons, protons, and neutrons as the subatomic particle. The neutrons and protons in the atoms have consisted within the nucleus. The electrons in the atom are revolving around the nucleus.

The atoms have been consisted of an equal number of protons and electrons, while the number of neutrons has been the difference in the atomic mass and the protons.

The ions have been formed with the loss or gain of the electrons by the atom in the terms of valence electrons to complete its octet.

For more information about the electrons and protons, refer to the link:

https://brainly.com/question/803445

Answer:

chemical action; chemical change; chemical process.

Explanation:

Answer: Chemical reaction

Answer:

The answer is

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume} \\ [/tex]

From the question

mass = 611 g

volume = final volume of water - initial volume of water

volume = 256.7 - 25.1 = 231.6 mL

The density of the metal is

[tex]density = \frac{611}{231.6} \\ = 2.638169257...[/tex]

We have the final answer as

Hope this helps you

its C) 113.21g

u just add all the masses

Answer:

b. cellulose.

Explanation:

Cellulose is a polysaccharide consisting of a long chain of repeating glucose units (i.e., β-D-glucose units) that produce long unbranched chains. Cellulose can be considered as a natural polymer (i.e., a non-modified carbohydrate) because it is composed of repeated chains of β-D-glucose molecules stuck together. The cellulose polysaccharide is a principal component of plant cell walls.

Answer:

Density, [tex]\rho=0.49\ lb/in^3[/tex]

Explanation:

It is given that the density of liquid mercury is 13.6 g/mL. We need to convert the density into lb/in³.

We know that,

2.205 lbs= 1 kg

1 g = 0.0022 lb

1 mL = 0.0610 in³

[tex]13.6\ \dfrac{g}{mL}=13.6\times \dfrac{0.0022\ lb}{0.0610\ in^3}\\\\=0.49\ lb/in^3[/tex]

So, the density of liquid mercury is [tex]0.49\ lb/in^3[/tex].

Answer:

49.0g/mol is molar mass of X

Explanation:

551mg of X are dissolved in 100g of benzonitrile

Freezing point of solution: -13.4°C

The freezing point depression of a solution (Colligative property) follows the equation:

ΔT = Kf*m*i

Where ΔT is change in freezing point from the pure solvent (Benzonitrile: -12.8°C) to the solution (-13.4°C)

Kf is freezing point depression of benzonitrile: 5.34°C/m

m is molality of the solution (Moles X / kg of benzonitrile)

And i is Van't Hoff factor (1 for any solute in benzonitrile)

ΔT = -12.8°C - (-13.4°C) = 0.6°C

Solving for molality of the solution:

ΔT = Kf*m*i

0.6°C = 5.34°C/m*m*1

0.1124m = molality of the solution

Moles of X are:

0.1124mol/kg benzonitrile * 0.1kg benzonitrile = 0.01124 moles X

In 551mg = 0.551g:

Molar mass:

0.551g / 0.01124mol =

49.0g/mol is molar mass of X

Answer:

CO₂

Explanation:

Please see attached picture for full solution.

* The masses of each atom can be found in the periodic table of elements

Answer:

true i think

Explanation:

Answer:

See explanation

Explanation:

COCl2 Contains two polar C- Cl bonds due to the electro negativity difference between carbon and chlorine.

There are 24 valence electrons in COCl2, the ideal bond angle is 120° based on the valence shell electron pair repulsion theory since the molecule trigonal planar. However, the double bond present compresses the bond angle to about 111°.

The dipoles in COCl2 do not cancel out hence the molecule is polar

The Lewis structure for COCl₂, including lone pairs is attached to the image below.

Carbon (C) has 4 valence electrons, oxygen (O) has 6 valence electrons, and chlorine (Cl) has 7 valence electrons.

In this structure, the oxygen atom is double-bonded to the carbon atom, and there is a single bond between the carbon atom and each chlorine atom. The oxygen atom has 2 lone pairs of electrons.

The molecular shape of COCl₂ is linear. The carbon atom is bonded to two chlorine atoms, and there are no lone pairs on the carbon atom. Therefore, the electron domain geometry is linear.

To learn more about Lewis structure, follow the link:

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#SPJ6

Answer:

a. 7.52

b. 16.5

c. 85

d. 6.03

Explanation:

significant number exempts 0 as a number which explains the last one. The two significant numbers there are 6 and 3

Answer:

The correct option is  C) The number of protons is equal to the number of electrons.

Explanation:

Atoms are made up of particles called protons, neutrons, and electrons. Protons and neutrons are in the center of the atom and form the nucleus, while electrons surround the nucleus. Electrons have a negative charge. The charge of the protons is positive and finally, the neutrons have no charge.

If the atom has no charge, this means that the total charge of the atomic nucleus, which is positive due to the presence of the protons, is equal to the negative charge of the electrons, so that it cancels out.

So, the correct option is  C) The number of protons is equal to the number of electrons.

Answer:

Explanation:

The name of the compound, C₅H₁₂, is pentane. It is a member of the alkane family hence it is saturated (no double or triple bond within it's carbon chain) and SP³ hybridized. It's three structural isomers are shown (drawn) in the attachment below. The three structural isomers are n-pentane, 2-methylbutane and 2,2-dimethylpropane.

Answer:

true fats; triglycerides

Explanation:

Answer:

sdipgjaeri0ae

Explanation:

Answer:

HF

Explanation:

This concept can be understood from the knowledge of Intermolecular forces of attraction.

Intermolecular bonds are Van der Waals forces which are weak forces of attraction joining non-polar and polar molecules together. They exist in the form of London Dispersion Forces and Dipole-dipole attraction.

An example of Dipole-dipole attraction is the hydrogen bond which is a unique dipole-dipole attraction between polar molecules in which a hydrogen atom is directly joined to a highly electronegative atom such as fluorine, oxygen, or nitrogen).

Molecules that possess the characteristics of hydrogen bonding have a higher boiling point. In the given question, only HF undergo hydrogen bond due to the electronegative effect of the fluorine element.

F2 occurs as a weak London dispersion force and it occurs between non-polar molecules.

Answer:

This done such that when a reaction is in equilibrium and disturb by and external force which would prevent its completion its adjust so as to offset that external force and still go on to completion

Answer:

Explanation:

The density of a substance can be found by using the formula

[tex]Density = \frac{mass}{volume} [/tex]

From the question

mass of toy car = 29 g

Volume = New volume - original volume of water in cylinder

That's

volume = 19 - 3 = 16 mL

Substitute the values into the above formula and solve for the density

That's

[tex]Density = \frac{29}{16} \\ = 1.8125[/tex]

We have the final answer as

Density = 1.813 g/mL to the nearest thousandth

Hope this helps you

Answer:

1.813 g/mL

Explanation:

The density can be found with the following formula.

[tex]d= \frac{m}{v}[/tex]

where [tex]m[/tex] is the mass and [tex]v[/tex] is the volume.

We know the mass is 29 grams. We must find the volume.

The volume is equal to the volume of water that is displaced. Subtract the initial volume of water from the final volume.

⇒ final volume - initial volume of water

The initial volume of water is 3 mL and the final volume is 19 mL.

⇒ 19 mL - 3 mL

⇒ 16 mL

The volume of the toy car is 16 mL.

Now we know the mass and the volume.

[tex]m= 29g\\v=16mL[/tex]

Substitute the values into the formula.

[tex]d=\frac{m}{v}[/tex]

[tex]d=\frac{29g}{16mL}[/tex]

[tex]d=1.8125 g/mL[/tex]

Round to the nearest thousandth. The 5 in the ten thousandth place tells us to round the 2 to a 3.

[tex]d\approx1.813 g/mL[/tex]

The density of the toy car is about 1.813 grams per milliliter.

Answer:

because time is independent and distance is dependent . time goes on if distance is not there but if distance is covered it is covered in certain time . that's why distance is taken on y axis while displacement on x axis