CHEM ASSIGNMENT!!

PLEASE HELP

Answer:

Solid = rocks or other hard stuff

Liquid = water or mild or other stuff likt that

Answer:Ice is an example of a solid. A liquid has a defined volume, but can change its shape. Water is an example of a liquid. A gas lacks either a defined shape or volume.

...

Examples of gases include:

Air.

Natural gas.

Hydrogen.

Carbon dioxide.

Water vapor.

Freon.

Ozone.

Nitrogen.

Explanation:

provides oxygen to the blood

Answer:

flourine 19F-

Explanation:

because we have 1 extra electron so the charge should be negative, then check the number of protons to know the atomic number, and 9 is flourine

Answer:

chemoautotrophs

Explanation:

From the given list of compounds, \(F_2\)(g)  and Hg(l) are at their standard state and therefore have a standard enthalpy of formation equal to zero.

The enthalpy change required to produce one mole of a compound from an element in its standard state is known as the standard enthalpy of formation. The standard states represent the shape an element would take at 1 bar of pressure and 25 °C. Since the energy would be different for the ridiculous reaction carried out with the diamond form of carbon, carbon is designated as graphite. Under normal circumstances, hydrogen exists as a molecular gas, thus this form is necessary for the typical reaction.

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There are 6 oxygen atoms on the left side of the equation and 7 oxygen atoms in the product (CO2 and H2O) formed.

In the given balanced chemical equation:

C2H6O + 3O2 → 2CO2 + 3H2O

We can determine the number of oxygen atoms on the left side of the equation by examining the coefficient in front of the O2 molecule. In this case, there are three O2 molecules, meaning there are a total of 3 × 2 = 6 oxygen atoms on the left side.

Moving on to the right side of the equation, we can see that two CO2 molecules are formed as products. Each CO2 molecule consists of one carbon atom and two oxygen atoms. Therefore, there are a total of 2 × 2 = 4 oxygen atoms in the CO2 molecules.

Additionally, there are three H2O molecules formed as products. Each H2O molecule consists of two hydrogen atoms and one oxygen atom. Therefore, there are a total of 3 × 1 = 3 oxygen atoms in the H2O molecules.

To find the total number of oxygen atoms in the product, we add the number of oxygen atoms from CO2 and H2O: 4 + 3 = 7 oxygen atoms.

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Answer:

accepts an H⁺

Explanation:

The following balanced ionic equation is given in this question;

HCl + H₂O → H₃O⁺ + Cl⁻

According to Brønsted–Lowry acid–base theory, a base is any substance that can accept hydrogen ions or protons (H+). Using this definition for the above equation, water (H2O) accepts a proton or H+ that was donated by HCl to form H30+ (hydronium ion), hence, water is acting as a BASE in this reaction because it accepts an H+.

Answer:

About 29 percent of the solar energy that arrives at the top of the atmosphere is reflected back to space by clouds, atmospheric particles, or bright ground surfaces like sea ice and snow

Answer:

weddings, christenings, confirmations, funerals, Easter and Christmas traditions

Some examples of formal events would be things such as weddings, christenings, confirmations, funerals, Easter and Christmas traditions.

-Hope this helps have a great day/night <3

Explanation:

Covalent bonds can be classified based on the number of bonds between atoms into three categories:

1. Single Covalent Bond: In a single covalent bond, two atoms share one pair of electrons. This is the most common type of covalent bond. For example, in H2O, each hydrogen atom forms a single covalent bond with the oxygen atom.

2. Double Covalent Bond: In a double covalent bond, two atoms share two pairs of electrons. This bond is stronger than a single covalent bond. For example, in O2, the oxygen atoms are connected by a double covalent bond.

3. Triple Covalent Bond: In a triple covalent bond, two atoms share three pairs of electrons. This bond is the strongest among the three types. For example, in N2, the nitrogen atoms are connected by a triple covalent bond.

It is important to note that the number of bonds between atoms is determined by the number of electrons they need to achieve a stable electron configuration, which varies depending on the elements involved.

The covalent bond is classified mainly into three types

single, double and triple bonds.

Covalent bond is a bond formed between two atoms through the sharing of two electrons between them.  The atoms will share more than one electron pairs if the valency is not satisfied.  the three types of covalent bond are single bond, double bond and triple bond.

single bond is formed when one pair of electrons are shared between atoms, while if two pairs or three pairs are shared, it is called double or triple bond respectively. Covalent compounds are those which contains covalent bonding.

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Answer:

C) the number of valence electrons

Explanation:

the group shows the valence electrons in the atom

eg. Na has one valence electron hence it belongs to group(I)

The coefficients needed to balance the redox reaction are: 2Fe(s) + 3Cl2(g) + 6H+(aq) -> 2Fe3+(aq) + 6Cl-(aq) + 3H2O(l)

The balanced redox reaction requires two molecules of chlorine gas to react with one atom of iron, producing one Fe3+ ion and two chloride ions. We need to balance both the mass and charge on each side of the equation.

Step 1: Balance the atoms other than oxygen and hydrogen.

Fe(s) + Cl2(g) -> Fe3+(aq) + 2Cl-(aq)

Step 2: Balance the oxygen atoms by adding water (H2O) molecules.

Fe(s) + Cl2(g) -> Fe3+(aq) + 2Cl-(aq) + H2O(l)

Step 3: Balance the hydrogen atoms by adding hydrogen ions (H+).

Fe(s) + Cl2(g) + 6H+(aq) -> Fe3+(aq) + 2Cl-(aq) + H2O(l)

Step 4: Balance the charges by adding electrons (e-).

Fe(s) + Cl2(g) + 6H+(aq) -> Fe3+(aq) + 2Cl-(aq) + H2O(l) + 6e-

The balanced equation for the redox reaction is:

2Fe(s) + 3Cl2(g) + 6H+(aq) -> 2Fe3+(aq) + 6Cl-(aq) + 3H2O(l)

The balanced redox reaction is 2 Fe(s) + 3 Cl2(g) -> 2 Fe3+(aq) + 6 Cl-(aq) with coefficients 2, 3, 2, and 6 respectively.

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Answer:

The answer is A

Explanation:

Answer:

D)All of the above

Answer:

Explanation:

Answer:

B

Explanation:

Answer:

11.01

Explanation:

because yes :)

a. NH3 (Ammonia): In a 1.0L container of NH3 at Standard Temperature and Pressure (STP), intermolecular forces such as hydrogen bonding would be exerted.

b) 1.0L container of CHCl3 at STP, dipole-dipole interactions (along with London dispersion forces) would be present.

a. NH3 (Ammonia):

In a 1.0L container of NH3 at Standard Temperature and Pressure (STP), intermolecular forces such as hydrogen bonding would be exerted. Ammonia (NH3) molecules consist of one nitrogen atom bonded to three hydrogen atoms, forming a trigonal pyramidal shape.

Hydrogen bonding is a type of intermolecular force that occurs when a hydrogen atom is covalently bonded to an electronegative atom (in this case, nitrogen) and interacts with another electronegative atom (in this case, the nitrogen atom of a neighboring NH3 molecule).

b. CHCl3 (Chloroform):

In a 1.0L container of CHCl3 (chloroform) at STP, intermolecular forces such as dipole-dipole interactions would be exerted. Chloroform (CHCl3) molecules consist of one carbon atom bonded to three hydrogen atoms and one chlorine atom, forming a tetrahedral shape.

Dipole-dipole interactions arise due to the difference in electronegativity between chlorine and hydrogen atoms. The chlorine atom is more electronegative than hydrogen, resulting in a polar covalent bond.

While dipole-dipole interactions are present in CHCl3, it is worth noting that CHCl3 also exhibits London dispersion forces. These forces occur due to temporary fluctuations in electron distribution, creating temporary dipoles.

London dispersion forces are the weakest type of intermolecular force but still contribute to the overall intermolecular interactions in CHCl3.

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Answer: i dont think anyone know because its ghard

Explanation:

Answer:

A). half, higher

Explanation:

The Formal charge is elaborated as the 'allocated charge to a molecules' atom' on the basis of the assumption that the electrons present in the chemical bond are equally split among the atoms. It is estimated by 'halving the no. of bonding electrons that encircle the atom.

While Oxidation number is characterized as the 'hypothetical charge of an atom that is present within a molecule.' It is also defined as 'the actual number of lost or gained electrons or the rate at which the electrons are gained or lost by an atom to develop a chemical bond along with the other atom.' It is calculated by allocating or sharing the electrons having the higher electronegativity belonging to a specific bond with the other. Thus, option A is the correct answer.

Explanation:

hope the picture above help u understand I did it in step so it would be easier to understand:)

The current passing through the circuit is 0.5A

Data Given

To solve this question, we need to find out the total resistance in the remote.

The total resistance is given by

R = 6Ω

The voltage in the circuit is

\(v = 1.5 * 2 = 3V\)

To find the current in the circuit, we would use the formula which is given as

\(I = V/ R\)

let's substitute the values into the equation and solve for I

\(I = V/R\\I = 3/ 6\\I = 0.5A\)

The current passing through the remote is 0.5A

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Answer:

The frecuency is 400 Hz.

Explanation:

In a periodic wave the wavelength is the physical distance between two points from which the wave repeats itself. It is named by (λ). That is, the wavelength is the minimum distance between two points on the wave that are in the same state of vibration.

Frequency is represented by the letter f, and is the number of vibrations that occur in a unit of time. That is, how many ridges or valleys are repeated in a unit of time.

The propagation speed is the speed with which the wave propagates in the medium, that is, it is the magnitude that measures the speed at which the wave's disturbance propagates along its displacement. Relate the wavelength (λ) and the frequency (f) inversely proportional using the following equation: v = f * λ.

In this case:

Replacing:

340 m/s= f* 0.85 m

Solving:

\(f=\frac{340 \frac{m}{s} }{0.85 m}\)

f= 400 Hz

The frecuency is 400 Hz.

Answer: B

Explanation:

At equilibrium, the rate of the forward reaction is equal to the rate of the reverse reaction, and thus the concentrations of the reactants and products must be constant.

Answer: Molarity when 25.0 g of the compound \(NaClO_{3}\)is placed in 85.0 mL of solution is 294.12 M.

Explanation:

Given: Mass = 25.0 g

Volume  = 85.0 mL (1 mL = 0.001 L) = 0.085 L

Molarity is the number of moles of a substance divided by volume in liter.

Hence, molarity of given solution is calculated as follows.

\(Molarity = \frac{mass}{Volume (in L)}\)

Substitute the values into above formula as follows.

\(Molarity = \frac{mass}{volume (in L)}\\= \frac{25.0 g}{0.085 L}\\= 294.12 M\)

Thus, we can conclude that molarity when 25.0 g of the compound \(NaClO_{3}\)is placed in 85.0 mL of solution is 294.12 M.

Answer:

solar- when the sun moon and earth are equally aligned meaning it has a shadow cast blocking sunlight

lunar- when the moon moves into the earth's shadow. it can only happen when the moon sun and earth are very close aligned and needs to have a full moon

Answer:

tin, tungsten , aluminum, boron , silicon and tellurium

molecules are often more than 1 of same element together in nature

like oxygen O is O2 is nature

in this assignment molecules are the number in front of the compound

so 3H20 means 3 molecules of H20 or water

compound are different elements together to make something else

al(oh)2

aluminum hydroxide or antacid

AL 1 O 2 H 2

total 5

molecule 1

Elements 3

3H2O

water

H 6 0 3

total 9

molecules 3

elements 2

NA2CO3

sodium carbonate or soda ash

NA 2 C 1 O 3

total 6

molecules 1

elements 3

one without a name is

FE2O3

iron oxide or rust

FE 2 O 3

total 5

molecules 2

elements 2

Co

C≡O

carbon dioxide

dangerous odorless gas

found in car & engine & generator & kitchen stove exhaust

dangerous because the human body can take it in its blood thinking it to be oxygen

C 1 O 1

total 2

molecules 1

elements 2

The conjugate base of a compound is what this compound will be after donating a H⁺.

The comopund in question is H₂BO₃⁻. After it loses 1 H⁺, it will have one less H atom and its charge decrease by one. Its charge is only with a "-" sign, which means its chargeis 1-. After decreasing by one, the charge becomes 2-.

So, the conjugate base will be HBO₃²⁻