How many unpaired electrons does fluorine have in its ground state electron configuration?

Answer:

An endothermic process is any process with an increase in the enthalpy H (or internal energy U) of the system. In such a process, a closed system usually absorbs thermal energy from its surroundings, which is heat transfer into the system. It may be a chemical process, such as dissolving ammonium nitrate in water, or a physical process, such as the melting of ice cubes.

Answer: The fossils in Layer 2 are younger than those in Layer 1, and older than the fossils in layer 3. (assuming layer 1 is at the bottom, and layer 3 is at the top.)

Explanation: Think of how this stack of rocks formed. Layer 1 would have deposited first along with it's fossils, followed by 2, 3, etc. Layer 2's fossils would be younger than Layer 1, but older than Layer 3.

Answer:

They agree to ethical standards when they are licensed.

Explanation:

Answer:

C) They agree to ethical standards when they are licensed

Explanation:

Answer:

CaCl3 is the limited reagent

Explanation:

Answer:

A is the answer hope this helps if wrong I ont know

Answer:

\(\boxed {\boxed {\sf A. \ 12.5 \ grams}}\)

Explanation:

We are asked to find the mass of 2.34 × 10²³ atoms of sulfur (S)

First, we convert atoms to moles using Avogadro's Number of 6.022 × 10²³. This is the number of particles (atoms, molecules, formula units, etc.) in 1 mole of a substance. For this question, the particles are atoms of sulfur. There are 6.022 × 10²³ atoms of sulfur in 1 mole of sulfur.

We will convert using dimensional analysis, so we must set up a ratio.

\(\frac {6.022 \times 10^{23} \ atoms \ S}{1 \ mol \ S}\)

We are converting 2.34 × 10²³ atoms of sulfur to moles, so we multiply the ratio by this value.

\(2.34 \times 10^{23} \ atoms \ S* \frac {6.022 \times 10^{23} \ atoms \ S}{1 \ mol \ S}\)

Flip the ratio so the units of atoms of sulfur cancel.

\(2.34 \times 10^{23} \ atoms \ S* \frac{1 \ mol \ S} {6.022 \times 10^{23} \ atoms \ S}\)

\(2.34 \times 10^{23}* \frac{1 \ mol \ S} {6.022 \times 10^{23}}\)

\(\frac{2.34 \times 10^{23}} {6.022 \times 10^{23}} \ mol \ S\)

\(0.3885752242 \ mol \ S\)

Next, we convert moles to grams using the molar mass. This is the mass of 1 mole of a substance. The value is found on the Periodic Table as the atomic mass, but the units are grams per mole instead of atomic mass units. Look up sulfur's molar mass.

Set up another ratio.

\(\frac {32.07 \ g \ S}{ 1\ mol \ S}\)

Multiply by the number of moles we calculated.

\(0.3885752242 \ mol \ S *\frac {32.07 \ g \ S}{ 1\ mol \ S}\)

The units of moles of sulfur cancel.

\(0.3885752242 *\frac {32.07 \ g \ S}{ 1}\)

\(0.3885752242 * {32.07 \ g \ S}\)

\(12.46160744 \ g \ S\)

The original value of atoms (2.34 × 10²³) has 3 significant figures (2,3, 4), so our answer must have the same. For the number we calculated, that is the tenths place. The 6 in the hundredth place tells us to round the 4 up to a 5.

\(12.5 \ g \ S\)

There are 12.5 grams of sulfur in 2.34 × 10²³ atoms of sulfur.

Answer:

c - Record !!

Answer:

EZ ANSWER IS C

Explanation:

Answer:

the atomic number

Explanation:

the atomic number/number of protons

Answer:

Basal metabolic rate is the number of calories your body needs to accomplish its most basic (basal) life-sustaining functions.

Answer:

Common sources of error include instrumental, environmental, procedural, and human. All of these errors can be either random or systematic depending on how they affect the results. Instrumental error happens when the instruments being used are inaccurate, such as a balance that does not work.

love that naruto pfp btw-

The non-metal elements in Group 7 – known as the halogens – get less reactive as you go down the group

Answer & Explanation:

The reactivity of elements in Group VII, also known as Group 17, decreases with increasing atomic radius. This is because halogens have high electronegativities and a proclivity to gain electrons in noble gas configurations. Myths are traditional stories or beliefs that explain cultural or societal beliefs, customs, or natural phenomena. They can be passed down through generations and can be based on true or fictitious events. Mythology, on the other hand, is the collection of myths associated with a specific culture or religion. Mythology can be amplified through retelling, incorporation into religious practices; association with significant events or figures, and adaptation into other media forms such as literature, film, or art.

The volume of 5.5 grams of carbon dioxide (CO2) at room temperature and pressure is approximately 2.42 dm³.

To calculate the volume of carbon dioxide (CO2) at room temperature and pressure (r.t.p), we can use the ideal gas law equation:

PV = nRT

Where:

P is the pressure

V is the volume

n is the number of moles

R is the ideal gas constant

T is the temperature

At r.t.p, the pressure is typically considered to be 1 atmosphere (atm) or 101.325 kilopascals (kPa). The temperature is approximately 298 Kelvin (K), which is equivalent to 25 degrees Celsius (°C).

First, we need to calculate the number of moles of carbon dioxide (CO2) using its mass and molar mass.

The molar mass of CO2 is calculated by adding the atomic masses of carbon (C) and two oxygen (O) atoms:

Molar mass of CO2 = (12.01 g/mol) + 2*(16.00 g/mol) = 44.01 g/mol

Now, we can calculate the number of moles using the given mass of 5.5 grams:

n = mass / molar mass = 5.5 g / 44.01 g/mol ≈ 0.125 mol

Next, we can rearrange the ideal gas law equation to solve for volume (V):

V = (nRT) / P

Substituting the known values into the equation:

V = (0.125 mol * 0.0821 L·atm/mol·K * 298 K) / 1 atm

V ≈ 2.42 dm³

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Answer:

The main difference between emission and absorption spectra is that an emission spectrum has different coloured lines in the spectrum, whereas an absorption spectrum has dark-coloured lines in the spectrum.l

The structural formula of butanol is C4H9OH. It consists of a chain of four carbon atoms, with a hydroxyl (-OH) group attached to one of the carbon atoms. Butanol has several structural isomers, which have the same molecular formula but different structural formulas.

A structural isomer is a compound that has the same molecular formula as another compound but has a different arrangement of its atoms. A string of 4 C atoms are bonded above, below, left, and right to H, except the second C, which is bonded below to O, which is bonded below to H is a structural isomer of butanol.

This is called butan-2-ol. The structural formula of butan-2-ol is CH3CH(OH)CH2CH3. In this isomer, the hydroxyl group is attached to the second carbon atom in the chain, whereas in butanol, the hydroxyl group is attached to the first carbon atom in the chain.

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Answer:

alkali metals

Explanation:

s block elements are also called alkali metals

Answer:

D-The hydrosphere looks blue and covers three-fourths of the Earth’s surface.

Explanation:

Answer:

Mushroom cells

Explanation:

They are mushroom cells because they are together.

Below contains the complete lab report on electromagnetic spectrum

Name: [Your Name]

Title: Electromagnetic Spectrum Lab Report

Instructor: [Instructor's Name]

Objectives:

The purpose of this lab is to analyze the elemental composition of different astronomical bodies using a virtual spectrometer and understand the importance of the electromagnetic spectrum in astronomical research.

Hypothesis:

I predict that the moons and planets will have varying compositions of elements, with hydrogen and helium being more common in gaseous bodies and heavier elements like carbon and nitrogen more common in rocky bodies.

Dependent variable: Presence of elements in astronomical bodies

Independent variable: Astronomical bodies (Moon One, Moon Two, Planet One, Planet Two)

Data:

[Please input your data for each object as per your virtual lab results]

Conclusion:

In this lab, I investigated the elemental composition of four different astronomical bodies using a virtual spectrometer and observed the presence or absence of various elements.

It is essential to use many types of equipment when studying space because different instruments can detect and analyze different aspects of the electromagnetic spectrum, providing a comprehensive understanding of the universe.

To make these moons and planets similar to Earth, oxygen would need to be present as it is a vital component of the carbon cycle and essential for life as we know it.

The electromagnetic spectrum helps us find out the makeup of stars by analyzing the emitted light, which contains information about the elements and their abundance within the star.

Determining the elements that a planet or moon is made up of helps us understand their formation, potential for life, and possible resources for future exploration or colonization.

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Answer:

The air smelled like a compound of diesel and gasoline fumes.

Answer: Stored energy

Explanation:

Answer:

2. stored energy It is 100% right

Explanation:

You just gotta match the moles:

moles of NaOH = 0.02737 L * 0.2115 M = 0.005789 mol of NaOH. The amount of moles of HCl it can neutralize should be the same since they are in a 1:1 ratio. Therefore, you can do moles of NaOH divided by 0.003745L to get the answer. It turns out to be 0.1546M.

Answer:

liquid

Explanation:

it is only the thing in what water can disslove

Answer:

Explanation:

Na₂CO₃+ CuCl₂ = CuCO₃ + 2NaCl

106 g ( 1 mole )                      117 g ( 2 moles )

106 gram   of Na₂CO₃   produces   117 grams of NaCl

23.9 gram  of Na₂CO₃   produces   117 x 23.9 / 106  grams  

grams of NaCl produced =  117 x 23.9 / 106  =  26.38  gram .

The mass of sodium chloride is produced by 23.9 g of sodium carbonate is 26.38 g.

Mass is defined as the amount of matter in a particle or object is represented by mass, which is a dimensionless quantity.

It is also defined as inertia is a quantitative measure of a fundamental feature of all stuff.

Na₂CO₃+ CuCl₂ --> CuCO₃ + 2NaCl

1 mole of Na₂CO₃ = 106 g

2 mole of NaCl = 117 g

So, 23.9 g of  Na₂CO₃  

= 117g x 23.9 / 106g

= 26.38 g

Thus, the  mass of sodium chloride is produced by 23.9 g of sodium carbonate is 26.38 g.

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Answer:

Explanations:

Physical changes are changes that affect the form of a chemical substance while chemical changes are irreversible reaction involving the rearrangement of the atoms of the molecules.

For Ice cream melting, this involves change in phase from solid (freezing)

Answer:

4.35 mL

Explanation:

The water line falls halfway inbetween the 4.4 and 4.3 mark.

The number halfway between 4.3 and 4.4 is 4.35.

Therefore, the volume of the liquid in the graduated cylinder is 4.35 mL.

Answer:

i hope u find what your looking for

Answer:

2.37 atm

Explanation:

0.72+1.65 = 2.37 atm