How many valence electrons does carbon have available for bonding to other atoms?
a. 2
b. 4
c. 6
d. 8

Newton’s Law .Use your knowledge of Newton’s Laws to complete the calculations. 1) F = 0.98 N 2) F = 3.9 N 3) F = 6.86 N 4) F = 10.78 N 5) F = 24.5 N 6) F = 49 N 7) F = 80.36 N.

Newton's law : F = ma

where, F = force

m = mass

a = acceleration due to gravity = 9.8 m/s²

1) mass = 0.10 kg ,

F = ma

F = 0.10 kg ×  9.8 m/s²

F = 0.98 N

2) mass = 0.40 kg

F = ma

F = 0.40 kg ×  9.8 m/s²

F = 3.9 N

3) mass = 0.70 kg

F = ma

F =  0.70 kg ×  9.8 m/s²

F = 6.86 N

4) mass = 1.1 kg

F = ma

F = 1.1 kg ×  9.8 m/s²

F = 10.78 N

5) mass = 2.5 kg

F = ma

F = 2.5 kg ×  9.8 m/s²

F = 24.5 N

6) mass = 5.0 kg

F = ma

F = 5.0 kg ×  9.8 m/s²

F = 49 N

7) mass = 8.2 kg

F = ma

F = 8.2 kg ×  9.8 m/s²

F = 80.36 N

Thus, Newton’s Law .Use your knowledge of Newton’s Laws to complete the calculations. 1) F = 0.98 N 2) F = 3.9 N 3) F = 6.86 N 4) F = 10.78 N 5) F = 24.5 N 6) F = 49 N 7) F = 80.36 N.

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The correct condensed structure of hexene is CH₃CH₂CH=CHCH₂CH₃.

A condensed structural formula also termed as semi-structural formula and it is used to describe the organic compounds in a line of text. They will be illustrated in a single line of text and specifies the atoms in the order which are located in a molecule.

Hexene is a hydrocarbon having chemical formula C₆H₁₂. It s used as a comonomer in the production of the polyethylene. There are several number of isomers in hexene, depending on the geometry and position of the double bond in the chain. One of the most common useful of isomers is 1-hexene as well as an alpha-olefin.

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Answer:

12.18g

Explanation:

You start with a mass of 20.3g of NH₄NO₃

We need to determine from this compound the mass of oxygen that is therein.

First, find the molar mass of the compound;

 NH₄NO₃ = 14 + 4(1) + 14 + 3(16)  = 80g/mol

So;

 Mass of oxygen  = \(\frac{48}{80}\) x 20.3   = 12.18g

Since in a chemical reaction, mass is always conserved, 12.18g of oxygen is produced.

Answer:

First Option: B)

Second Option: C)

The pictures below will show the answers. The first picture is the first option, and the second picture is the second option.

Answer:

Question 1 : B

Question 2: C

Explanation:

Hope this helps!

Edge 2022

Answer:

Hey mate...

Explanation:

This is ur answer.....

This is because fluorine atoms are the smallest of the halogens—the atoms are bonded close together, which leads to repulsion between free electrons in the two fluorine atoms.

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Answer:

ELECTRONEGATIVITY is the tendency of an atom in the molecule to attract the bonded pair of electrons .

Explanation:

it might help you!!!!!!

Answer:

the relative strength with which an element attracts electrons in a chemical bond

Explanation:

Answer:

0.8910 mols of NaOH in a 35.65 g sample of NaOH

Explanation:

Mass off NaOH = 39.997

given = 35.65 g of NaOH

35.65 g of NaOH * 1 mol NaOH = 0.8910, since there are 4 sig figs.

                                /40.01 g

A 35.65 g sample of NaOH contains 0.8910 moles of NaOH.

The mole, denoted by the sign "mol," is the volume of a system that has the same number of atoms in 0.012 kilograms of carbon-12 as there are elementary particles.

The mole, often known as mol, is a SI unit used to measure how many particles are present in a given substance. A mole is made up of 6.02214179 atoms or other fundamental building blocks like molecules.

Mass off NaOH = 39.997

given = 35.65 g of NaOH

No of moles of NaOH =35.65 g of NaOH × 1 mol NaOH /40.01 g

No of moles of NaOH = 0.8910 moles.

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The behavior of a strong acid is that it  it dissociates completely in aqueous solution, while weak acids partially dissociate in aqueous solution.

WHAT AN ACID IS:

Acids are chemicals that, when dissolved in water, split into protons (H+). Acids have a sour taste and have the capacity to color blue litmus paper red.

An acid can be classified as either weak or powerful, though. When in an aqueous solution, a strong acid entirely dissociates into hydrogen ions.

Strong acid is an acid that totally separates into ions in water.

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The Rf value of any particular site is Rf. It is a distance ratio. In more detail, it's a ratio of one spot's journey distance to another spot's travel distance.

Rf value describes how the mobile phase carried that particular chemical molecule through the stationary phase. A low Rf indicates minimal movement of the compound. A high Rf indicates that the chemical moved rapidly. More importantly, it is challenging to distinguish between two sites with comparable Rf values. It's possible that the spots from the two compounds are just next to one another.

It is ineffective to separate two places with big Rf value differences. It took a long time for one spot to move all the way up the plate.

You may assess the effectiveness and quality of your separation by calculating the Rf values for it. To optimize your separation, you can experiment with various sorbents and solvents to achieve a close enough but not too close difference in Rf values.

You can scale up your separation and effectively purify large quantities of the chemical using your optimized method.

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At 218 °C, solid NH₄SH decomposes to form 0.011 M NH₃ and H₂S, as given by its equilibrium constant.

The equilibrium constant (Keq) is the ratio of the product of the concentrations of the products to the product of the concentrations of the reactants, all raised to their stoichiometric coefficients.

Only gases and aqueous species are included.

        NH₄SH(s) ⇋ NH₃(g) + H₂S(g)

I                                 0           0

C                               +x          +x

E                                x            x

Keq = 1.2 × 10⁻⁴ = [NH₃] [H₂S] = x²

x = 0.011 M

At 218 °C, solid NH₄SH decomposes to form 0.011 M NH₃ and H₂S, as given by its equilibrium constant.

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Answer:

False

Explanation:

There are other power plants that make serious hazards to public health such as smoke. I am 90% sure this is that answer double check me on that though❤️

The calibration curve is used to determine the concentration of an unknown solution​.

A spectrophotometer is a device in which the absorbance of a substance could be measured. The absorbance refers to the amount of light that could be passed through a substance.

What we do is to first select the appropriate wavelength the would be used for the study. The absorbance of the solvent without the analyte is first measured. This is called the sample blank. Then several selected concentrations of the analyte is made to interact with light in the spectrophotometer and the absorbance is measured.

This is now used to create a line of best fit called calibration curve that could be used to determine the absorbance of any other concentration of the same solution.

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Answer:

Vinegar consists of acetic acid (CH3COOH), water and trace amounts of other chemicals, which may include flavorings. The concentration of the acetic acid is variable. Distilled vinegar contains 5-8% acetic acid. Spirit of vinegar is a stronger form of vinegar that contains 5-20% acetic acid.Jun 4, 2019

Explanation:does this answer your question?

The IUPAC name for the compound is 2-Hydroxypropanoic Acid.

This compound is an organic acid composed of a three-carbon chain with a hydroxyl group and a carboxyl group.2-Hydroxypropanoic acid, also known as lactic acid, is a carboxylic acid that is a common metabolic intermediate in the breakdown of carbohydrates and proteins. It is an important part of the citric acid cycle and is produced in large amounts during the process of cellular respiration. Lactic acid is also an important component of many dairy products such as yogurt and cheese, and is used in some food processing techniques. It is used in the production of polylactic acid, a biodegradable plastic, and has also found uses in the medical and cosmetics industries.

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The process through which a reactant loses electrons during a chemical reaction is known as oxidation. Reduction refers to the process through which a reactant acquires electrons during a reaction.

Such a thing typically happens if an acid reacts with a metal. Oxidation describes the process through which a reactant loses electrons during a chemical reaction.

Adding oxygen or any electronegative element, or taking away hydrogen or any electropositive one, is what is meant by the term "oxidation" in Classical and earlier concepts. Adding hydrogen or another electropositive element, or getting rid of oxygen or another electronegative one, is what reduction is all about, according to the classical or older idea.

An example of oxidation is C + O₂→ CO₂

An example of reduction is N₂ + 3H₂ → 2NH3

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The statement that would best explain the observation of no liquid being evident in the sealed bottle is: b. Liquid and vapor are at equilibrium in the bottle.

When liquid and vapor are at equilibrium in a closed system, it means that the rate of condensation (liquid turning into vapor) is equal to the rate of vaporization (vapor turning into liquid). In this case, it appears that all the liquid has vaporized, and no liquid is evident. This suggests that the liquid and vapor have reached a state of equilibrium, where the amount of liquid remaining is negligible compared to the amount of vapor present.

The vapor state is favored when equilibrium is established because the pressure exerted by the vapor phase reaches a point where it equals the vapor pressure of the liquid at that temperature. At this equilibrium point, no further net condensation or vaporization occurs, resulting in the absence of visible liquid in the sealed bottle.


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Water is a polar molecule due to its bent molecular geometry and the electronegativity difference between oxygen and hydrogen.

The oxygen atom in water is more electronegative than hydrogen, resulting in an uneven distribution of charge within the molecule.Since the majority of hydrocarbon bonds are nonpolar, they do not readily interact with polar substances like water. The nonpolar nature of hydrocarbons leads to a lack of significant electrostatic interactions between the hydrocarbon molecules and water molecules. As a result, hydrocarbons are generally insoluble in water.It is important to note that option c) they exhibit considerable molecular complexity and diversity, and option d) they are less dense than water, are not accurate explanations for the insolubility of hydrocarbons in water. The solubility of hydrocarbons in water primarily depends on the polarity of the hydrocarbon molecules and their ability to interact with water molecules.

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Answer:

Permanent

Explanation:

I took the text

After that, the speeds of the molecules are calculated at the two different temperatures as given in the question and then, the ratio is calculated by dividing.

Here, T is the temperature,

         m is the mass of the molecules and

         R is the Gas constant.

Let's taken an example of the two temperatures are as follows:

\(T_{1}\)=270K

\(T_{2}\)=30K

We know that the root mean square speed of the molecules is given as:

 \(V_{rms} = \sqrt{\frac{3RT}{M} }\)

Putting the values of the temperatures and calculating the root mean square speeds of the molecules:

\(V_{rms1} = \sqrt[]{\frac{3R*270}{M} }\)

\(V_{rms2} = \sqrt{\frac{3R*30}{M} }\)

Dividing the above two root mean square speed equations in order to get the ratio of the two, we get,

⇒ \(\frac{V_{rms1} }{V_{rms2} } = \frac{\sqrt{\frac{3R*270}{M} } }{\sqrt{\frac{3R*30}{M} } }\)

⇒ \(\frac{V_{rms1} }{V_{rms2} } = \sqrt{\frac{9}{1} }\)

⇒ \(\frac{V_{rms1} }{V_{rms2} } = \frac{3}{1}\)

Hence, the ratio of the root mean square speeds of the molecules of an ideal gas at 270K and 30K is 3:1.

Note: It is important to note that the root-mean-square speed is the measure of the speed of particles in a gas, defined as the square root of the average velocity-squared of the molecules in a gas. The mass and the Gas constant values for a particular gas remain the same and only temperature is the variant.

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Answer:

Explanation:

Data tables help you keep information organized. If you're collecting data from an experiment or scientific research, saving it in a data table will make it easier to look up later. Data tables can also help you make graphs and other charts based on your information.

1 L of the acid solution contains 142.85 mg of CaCO3.

Given, mass of H2SO4 = 140 mg / L

The molecular weight of H2SO4 = 98g / mol

Molarity = mass of H2SO4 / molecular weight of H2SO4 = 140/98 = 1.4285

Normality = Molarity x n factor n factor for H2SO4 = 2Molarity = 1.4285

Normality = 2 x 1.4285 = 2.857 mg / mL1 mol of H2SO4 = 98 g

Hence, 1 ml of H2SO4 = 98/1000 = 0.098gCaCO3 has a molecular weight of 100 g. Therefore, 1 mole of CaCO3 has a mass of 100 g. According to this, 1 mole of CaCO3 reacts with 2 moles of H2SO4.

The normality of the acid is 2.857.

Hence, 1 L of the acid will have 2.857 moles of H2SO4.To calculate the concentration in mg/L of the acid in terms of CaCO3, we need to first find the number of moles of CaCO3 that can be reacted with 2.857 moles of H2SO4.2 moles of H2SO4 react with 1 mole of CaCO3.Therefore, 2.857 moles of H2SO4 will react with:

1 mole of CaCO3/2 moles of H2SO4 = 1.4285 moles of CaCO3In 1 L of the acid, there are 1.4285 moles of CaCO3.The mass of 1.4285 moles of CaCO3 = 1.4285 x 100 = 142.85 g / L

Therefore, 1 L of the acid solution contains 142.85 mg of CaCO3.

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Explanation:

Gas prices in the U.S. are given by the gallon; to convert them to liters, you'll divide the price by the number of liters in a gallon, 3.78541. So if gas costs $3.50 per gallon, you have $3.50 ÷ 3.78541 = $0.92460 per liter, which would typically be rounded to $0.92 per liter.

Answer:

How many moles of each element are in one mole of Be (OH)2? 1 mole of beryllium, 1 mole of oxygen, 2 moles of hydrogen 1 mole of beryllium, 2 moles of oxygen, 2 moles of hydrogen CORRECT ANSWER 2 moles of beryllium, 2 moles of oxygen, 2 moles of hydrogen

Explanation:

Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, 1 moles of beryllium,  2 moles of hydrogen and 2 moles of oxygen  are in one mole of Be(OH)\(_2\).

The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number.

Mathematically, the formula for mole is given as

number of moles of element=given mass of element÷ molar mass of element

1 moles of beryllium, 2 moles of hydrogen and 2 moles of oxygen  are in one mole of Be(OH)\(_2\).

Therefore, 1 moles of beryllium,  2 moles of hydrogen and 2 moles of oxygen  are in one mole of Be(OH)\(_2\).

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Answer: Energy stored in an object due to its position is Potential Energy. The energy that a moving object has due to its motion is Kinetic Energy. All forms of kinetic energy are the result of a previous state of potential energy. For example, the stored chemical potential energy of a battery converts to electrical kinetic energy to transport electricity to a light bulb, which radiates thermal kinetic energy. Potential energy is the energy that is stored in an object due to its position relative to some zero position. An object possesses gravitational potential energy if it is positioned at a height above (or below) the zero height.

Answer:

salad

Explanation:

HF Lewis structure is a polar due to the difference in electronegativity between hydrogen and fluorine atoms. This is due to permanent dipole moment, meaning that there is an uneven distribution of electrons within the molecule.

The HF (hydrogen fluoride) molecule has a polar covalent bond, which means that it has an uneven distribution of electrons between the two atoms.

In a polar covalent bond, one atom has a higher electronegativity than the other and therefore attracts the shared electrons more strongly, resulting in a partial negative charge on that atom and a partial positive charge on the other atom.

In the case of HF, fluorine has a higher electronegativity than hydrogen, which means that the electrons in the covalent bond are more strongly attracted to the fluorine atom. This results in a partial negative charge on the fluorine atom and a partial positive charge on the hydrogen atom.

Because the HF molecule has a polar covalent bond and the molecule has a bent shape due to the lone pair of electrons on fluorine, the molecule as a whole is also polar.

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The total mass of 4 tin is in grams is 580 grams and in kg is 0.58kg.

One tin of chopped tomatoes weight is 145 grams

and we have to calculate it for 4

so for 4

145*4 =580 grams

and we have to change it into kilograms so

580 /1000  = .58kg

By 1,000, divide the number of grams.

To convert from grams to kilograms, simply divide by 1,000 because there are 1,000 grams in every kilogram. If necessary, construct the equation using fractions. Put the number of grams over 1 and divide it by the conversion factor, which is 1 kg / 1,000 g. Your answer in kilograms will result from the cancellation of the grams. Remember to use the appropriate units to mark your response.

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240g

Explanation:

Number of moles = 5

Molar Mass = 16 x 3 = 48

Number of moles = Mass/Molar Mass

Mass = Number of moles x Molar Mass

Mass = 5 x 48

Mass = 240g

Answer:

Two sig figs

Explanation:

Non-zero integers always count as sig figs (the 2 before the decimal point), and any trailing zeros at the right end of the number are significant only if there is a decimal point (in this case, the 0 is significant). Therefore, there are 2 sig figs in 2.0 x \(10^{2}\)