3. When two atoms bond together to form a molecule, which parts of the atoms
become part of the bond?

According to the question the experimental value for the specific heat and the accepted value for the 100% propylene glycol solution (pure propylene glycol) is higher than the others as:

The experimental value is the value that you get in an experiment.

Error = [accepted value - experimental value]

Typically, the discrepancy is shown as a percent inaccuracy.

Experimental value 100% equals percentage error = |experimental value - accepted value. Consider, for instance, that you performed an experiment to ascertain the boiling point of water and obtained a result of 99.3 °C.

99.3 °C is your experimental value.

The ideal temperature is 100.0 °C.

|99.3 °C - 100.0 °C| = 0.7 °C is the experimental error.

The inaccuracy is represented as 99.3 °C - 100.0 °C/100.0 °C = 0.7 °C.

0.7/100.0 °C × 100 = 0.7 %

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Since no sugar will be added or removed, the number or moles of it in the glas won't change.

Let's call this quantity:

The molar concetrnation can be written as the followin equation:

Where C is the concentration given the number of moles of sugar and the volume V.

We can rewrite this as:

Now, before the ice melts, the volume of the lemonate is 150 mL and the sugar concentration is 2.27 mol/L. Let's call this situation 1:

After the ice melt the one third it will, we will have a certain volume and the concentration we want 1.88 mol/L. Let's call this situation 2:

Now, we can put thouse tofether:

And we can solve for the unknown volume of situation 2:

Since the final volume is approximately 181 mL, the difference between it and the initial volume is the volume of water that came from the melted part of the ice:

Since we assume that the density of the water is 1.00 g/mL, we can calculate the mass it represents:

And since this is only 1 third of the ice (the rest won;t melt), we know that the whole ice will have three times this mass:

So, it should be added approximatelt 93 grams of ice.

Answer:

2 P2 (1.2 atm =157 one. 8. A gas with a volume of 4.0 L

Explanation:

False. The statement that the species BF3 does not exist because its central boron (B) atom has only 6 valence electrons .

The existence and stability of chemical species are determined by the electron configuration and bonding of the atoms involved. In the case of BF3 (boron trifluoride), boron is the central atom.

Boron, located in Group 13 of the periodic table, has an atomic number of 5. As a result, it has 5 electrons in its neutral state. However, when boron forms chemical compounds, it can utilize vacant orbitals to accommodate additional electrons.

In the case of BF3, boron forms three covalent bonds with three fluorine (F) atoms, resulting in a total of 8 electrons around the boron atom. This satisfies the octet rule, which states that atoms tend to gain, lose, or share electrons in order to achieve a stable electron configuration with 8 valence electrons.

Therefore, BF3 does exist, and its central boron atom accommodates 8 valence electrons, rather than just 6.

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Answer:

See attached image.

Explanation:

See attached image.

Remember to use the units in deciding steps to take.  Find the moles needed or delivered by using:

Molarity x Volume = moles  [(moles/L)*(L) = moles]

Molarity, M, is dedined as 1 mole/liter.  When working with a unit such as 6M, rewite it as 6 moles/liter, and then use unit conversions to guide how to find the solution, so to speak.

Answer:Physical

Explanation:

State Change is physical because it changes without it being chemically done. So when water changes from a liquid to a solid the state of it is changing. (Solid or Liquid or Gas)

Basically what is physically being changed with out a chemical.

The concentration of the concentrated solution was 0.112 M, and the calculation used was option a. Cc x Vc = Cd x Vd.

The concentration of the concentrated solution can be determined using the formula Cc x Vc = Cd x Vd. In this case, Cc is the concentration of the concentrated solution, Vc is the volume of the concentrated solution (1.00 mL), Cd is the concentration of the diluted solution (0.0112 M), and Vd is the volume of the diluted solution (10.00 mL).

To find Cc, rearrange the formula:
Cc = (Cd x Vd) / Vc
Plug in the values:
Cc = (0.0112 M x 10.00 mL) / 1.00 mL
Cc = 0.112 M

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The mass of oxygen gas produced by the reaction of 9.94 g of ammonium perchlorate can be calculated using stoichiometry and the balanced equation for the reaction.

What is the balanced equation?

The balanced equation for the reaction of ammonium perchlorate (NH₄ClO₄) is:

NH₄ClO₄ → N₂(g) + Cl₂(g) + 2O₂(g) + 2H₂O(g)

From the balanced equation, we can see that for every 1 mole of NH₄ClO₄, 2 moles of O₂ are produced.

First, we need to determine the number of moles of NH₄ClO₄ in 9.94 g:

moles of NH₄ClO₄ = mass / molar mass = 9.94 g / (NH₄ClO₄ molar mass)

Next, we can use the mole ratio from the balanced equation to calculate the moles of O₂ produced:

moles of O₂ = moles of NH₄ClO₄ × (2 moles of O₂ / 1 mole of NH₄ClO₄)

Finally, we can convert the moles of O₂ to grams using the molar mass of O₂.

Therefore, the mass of oxygen gas produced can be calculated using the given information and stoichiometry.

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To produce 35.5g of H2, approximately 2055.49g of NaCl is required.

To calculate the mass of NaCl required to produce 35.5g of H2, we need to determine the stoichiometry of the reaction and use the molar mass of NaCl.

The balanced equation for the reaction is:

2NaCl + 2H2O -> 2NaOH + H2

From the balanced equation, we can see that for every 2 moles of NaCl, 1 mole of H2 is produced. We can use the molar mass of H2 (2.016g/mol) to convert the given mass of H2 into moles:

moles of H2 = mass of H2 / molar mass of H2

moles of H2 = 35.5g / 2.016g/mol

moles of H2 = 17.6 mol

Since the stoichiometry of the reaction is 2 moles of NaCl to 1 mole of H2, we can set up the following ratio:

moles of NaCl / moles of H2 = 2 / 1

Rearranging the equation to solve for moles of NaCl:

moles of NaCl = (moles of H2 * 2) / 1

moles of NaCl = (17.6 mol * 2) / 1

moles of NaCl = 35.2 mol

Now, we can calculate the mass of NaCl required using the molar mass of NaCl (58.44g/mol):

mass of NaCl = moles of NaCl * molar mass of NaCl

mass of NaCl = 35.2 mol * 58.44g/mol

mass of NaCl = 2055.49g

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The activation energy for the first-order rearrangement of CH3NC is 1.6 x 10^5 J/mol, which can be determined using the Arrhenius equation. The equation relates the rate constant (k) to the temperature (T) and the activation energy (Ea).

The Arrhenius equation is given by: k = A * e^(-Ea/RT)

Where:

k = rate constant

A = pre-exponential factor

Ea = activation energy

R = gas constant

T = temperature

To determine the activation energy, we need to find the ratio of rate constants at two different temperatures and solve for Ea.

Taking the natural logarithm of both sides of the equation, we have:

ln(k2/k1) = -(Ea/R) * (1/T2 - 1/T1)

Given:

k1 = 3.61 x 10^-15 s^-1 at 298 K

k2 = 8.66 x 10^-7 s^-1 at 425 K

Plugging these values into the equation and solving for Ea:

ln(8.66 x 10^-7/3.61 x 10^-15) = -(Ea/R) * (1/425 - 1/298)

Ea = -ln(8.66 x 10^-7/3.61 x 10^-15) / (1/425 - 1/298) * R

Ea = -ln(2.4 x 10^8) / (0.00354) * 8.314

Ea = 1.6 x 10^5 J/mol

To determine the activation energy for the first-order rearrangement of CH3NC, we use the Arrhenius equation. This equation relates the rate constant (k) to the temperature (T) and the activation energy (Ea). By taking the natural logarithm of the ratio of rate constants at two different temperatures, we can solve for Ea. Given the rate constants at 298 K and 425 K, we plug these values into the equation and rearrange it to solve for Ea. Using the value of the gas constant R, we can calculate the activation energy.

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Answer:

Asthenosphere

Explanation:

The asthenosphere is the hot, weak, inner part of the upper mantle. Although it is solid, it can flow like a thick, heavy liquid.

Answer:

5.52

Explanation:

2.76 10^-3 M = 2.76mM

2.76mM*2L= 5.52mmol

Answer:

Thx Have a fantastic day! :)

Explanation:

A pH of 4 has a higher concentration of H+ ions compared to option B with a pH of 5. Therefore, option A is a stronger acid.

pH is a measure of the concentration of hydrogen ions (H+) in a solution. Acids are substances that can donate H+ ions, and the strength of an acid depends on the concentration of H+ ions in solution. The lower the pH, the higher the concentration of H+ ions, and the stronger the acid. In this case, option A with a pH of 4 has a higher concentration of H+ ions compared to option B with a pH of 5. Therefore, option A is a stronger acid because it has a greater ability to donate H+ ions in solution compared to option B.

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The energy in Ha for the second excited state of hydrogen (h[0,0,1]) is -1.51 Ha.

To calculate the energy of hydrogen in its second excited state, we need to use the formula for the energy of a hydrogen atom:

E = -13.6 ha / n^2

Where E is the energy in hartrees (ha), and n is the principal quantum number. In this case, n = 3, so we can plug that into the formula:

E = -13.6 ha / 3^2

E = -13.6 ha / 9

E = -1.51 ha

Therefore, the answer is E = -1.51 Ha.

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Answer:

it's an acid

Explanation:

because itis soda

Answer:

organisms cannot stay with out getting nutrients as they will not be able to repair them selves or produce energy.

Explanation:

Answer:

It could be because of a physical change.

Explanation:

A physical change affects a substance's physical properties, and a chemical change affects its chemical properties.

All of the above provide the forces that drive the movement of chromatids toward opposite spindle poles during anaphase.

What is anaphase?

Anaphase is the third stage of cell division, which occurs between metaphase and telophase, and is characterized by movement. Following are the forces that drive the movement of chromatids toward opposite spindle poles.

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Answer:

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

\(n = \frac{N}{L} \\\)

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

\(n = \frac{5.67 \times {10}^{24} }{6.02 \times {10}^{23} } \\ = 9.418604...\)

We have the final answer as

Hope this helps you

To get the number of neutrons use the formula i.e. No. of neutrons=mass number-atomic number. Therefore , 28–14 = 14neutrons.

Silicon-28 atom is the stable isotope of silicon with relative atomic mass 27.9769265.

By multiplying the proton and neutron counts of the exact isotope that interests you, you may always find the relative mass of an element. For instance, an atom of carbon-12 has a relative atomic mass of 12 due to its composition of 6 protons and 6 neutrons.

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Answer:

you would more than likely have hot coca.  

Explanation:

Because when its cold out you don't want something cold, its common sense  lol.

Answer:

4

Explanation:

hope this helps, can i have brainliest

1-Bromo-1-chloropropane has a bromine atom bonded to the first carbon (C1), a chlorine atom bonded to the second carbon (C2), and the remaining carbons connected in a chain. The highest Newman projection looking down the C1-C2 bond shows the C1 atom in the front, the C2 atom at the back, and the other atoms (Br, C3, and Cl) attached to the C1 atom.

Here's the structure of 1-bromo-1-chloropropane, showing wedges and dashes:

     Br

      |

      C

     /

    C

   /

  C - Cl

To draw the highest Newman projection looking down the C1-C2 bond, we need to imagine looking along that bond with the C1 atom in front and the C2 atom at the back. The attached atoms (Br, C1, C3, and Cl) will be represented as circles.

Here's the highest Newman projection:

      Br

       |

       C3

      /

     C1

    /

   C2

  /

 Cl

The C1 atom is represented by the intersection of the horizontal and vertical lines, while the C2 atom is shown as the circle at the end of the vertical line. The other atoms (Br, C3, and Cl) are attached to the C1 atom, and their positions are represented by their corresponding circles.

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Yes, actually dish soap (Dawn) and a potato can actually be good rust removers. Just by slicing a potato in half and then placing the cut end of the potato in a shallow dish of the dish soap, a process should be created after soaking for a few minutes. This is one of the DIY ways to remove rust; just remove the soapy potato from the shallow dish and take care of the rust. Simple as that meaning that dish soap would be a good rust remover.

~

ROR

The soap cannot be expected as a good rust remover, as it lacks the presence of strong acids, or petroleum products, to dissolve the rust.

Rusting is the process of the formation of iron compounds with the reaction of iron with oxygen and water.

The rust can be removed with the acid and petroleum products, as their reaction dissolves the oxygen compounds.

The soap alone cannot be considered a good rust remover, as it lacks the presence of strong acids or petroleum products to dissolve the rust.

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One mole of carbon atoms has a mass of exactly 12 g. Because magnesium atoms each have twice the mass of carbon atoms (24Mg compared with 12C), one mole of magnesium has a mass of 24 g. In fact, one mole of any element has a mass in grams that is equal to its relative atomic mass. One mole of iron has a mass of 56 g

Answer:

\(n_{N_2}=0.00369molN_2\)

Explanation:

Hello there!

In this case, by firstly setting up the described chemical reaction, we are able to write:

\(2NO(g)+2H_2(g)\rightarrow N_2(g)+2H_2O(g)\)

Thus, given the pressure (convert to atm), volume and temperature (convert to K) we can calculate the moles of NO:

\(n=\frac{PV}{RT}\\\\n=\frac{200.00/101.325atm*0.090L}{0.08206\frac{atm*L}{mol*K}*(20.0+273.15)K} \\\\n=0.00738molNO\)

Next, we use the 2:1 mole ratio of NO to N2 to obtain the moles of nitrogen gas that will be produced:

\(n_{N_2}=0.00738molNO *\frac{1molN_2}{2molNO} \\\\n_{N_2}=0.00369molN_2\)

Regards!

If the weight in gm of the sample is 0.040 moles of salt (NaCl) then Molar mass of NaCl = 58.44 g/mol.

The ratio between the weight and the amount of substance in any sample of a chemical compound is known as the molar mass of that compound. The molar mass of a compound is a bulk property instead of a molecular one.

By using formula: n=m / M m=n×M

m=(0.040)x(58.5) m=2.34g

So,

It means that if we prepare a 100cm3 solution using 2.34g of NaCl, the solution's concentration will be 0.500 mol/dm3.

Molar mass of Nacl = 58.44 g/mol

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