Titanium dioxide (TiO2) is an industrial chemical used as a white pigment in paint. The conversion of volatile TiCl4 to TiO2 occurs according to the reaction, TiCl4(g) + O2(g) → TiO2(s) + 2Cl2(g). If 15.70 g of TiCl4 reacts in excess oxygen to form 10.40 g Cl2, what is the percent yield of the reaction?

Answer:

98L is the volume of the gas

Explanation:

To solve this question we need to find  the moles of O2 + moles HCl. With these moles and PV = nRT we can find the volume as follows:

Moles O2: 3.0mol

Moles HCl:

50.0g * (1mol/36.5g) = 1.37 moles HCl

Total moles:

3.0mol O2 + 1.37 mol HCl = 4.37 moles

PV = nRT

V = nRT/P

Where V is volume in L, n are moles = 4.37mol, R is gas constant = 0.082atmL/molK, T is absolute temperature = 273.15K at STP, P = 1atm at STP

V = 4.37mol*0.082atmL/molK*273.15K / 1atm

V = 98L is the volume of the gas

The factors that likely played a role in Jessie's fainting episode are a. chronic hyperglycemia, b. her anticonvulsant medication, c. overexertion while saving the drowning boy, and e. diabetic ketoacidosis.

Chronic hyperglycemia, indicated by option a, can affect blood flow and oxygen supply to the brain, potentially leading to fainting episodes. Anticonvulsant medication, mentioned in option b, can have side effects such as dizziness or lightheadedness, which may contribute to fainting. Overexertion, as stated in option c, can cause fatigue, dehydration, and low blood pressure, all of which increase the risk of fainting. Diabetic ketoacidosis, noted in option e, is a serious complication of diabetes that can lead to electrolyte imbalances and dehydration, potentially triggering a fainting episode.

Options a, b, c, and e are the correct answers.

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Answer:

-16

81

19

Explanation:

The quadratic regression equation is \(y = -16x^2 +81x\), and the estimated height in 0.25 seconds is 19 feet

Regression equations are used to determine the relationship between sets of data

The dataset is given as:

Time (seconds)       Height (feet)

       0                               0

      0.5                            35

         1                              65

        1.5                             85

         2                              95

        2.5                           100

           3                             95

To determine the quadratic regression equation, we make use of a graphing calculator.

From the graphing calculator, we have the following calculation summary:

a = -16.429

b = 81.071

c = -0.357

A quadratic regression equation, is represented as:

\(y = ax^2 + bx + c\)

So, we have:

\(y = -16.429x^2 +81.071x -0.357\)

Approximate

\(y = -16x^2 +81x\)

The estimated height in 0.25 seconds is:

\(y = -16* 0.25^2 +81 * 0.25\)

\(y = 19.25\\\)

Approximate

\(y = 19\)

Hence, the estimated height in 0.25 seconds is 19 feet

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4K+O2-----------2K2O

Answer:

-3.5g−6

Explanation:

-3.5g−6

A molecule with a T-shaped molecular geometry has a bond angle of option A, which is <120° for equatorial bonds and <90° for axial bonds. The correct answer is D.

A molecule with a T-shaped molecular geometry has a bond angle of 120° for equatorial bonds and 90° for axial bonds. In a T-shaped molecular geometry, the central atom is bonded to three other atoms and has two lone pairs. The repulsion between the lone pairs causes the bond angles to be less than the typical angles found in trigonal bipyramidal geometry. In conclusion, the bond angles in a molecule can vary based on its molecular geometry and it is important to understand these angles to accurately predict the molecule's properties and behavior.

Therefore, the correct answer for the bond angle in a T-shaped molecular geometry is A (<120° for equatorial bonds and <90° for axial bonds).

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Answer:

Explanation:

i think c

Answer:

c

Explanation:

the map shows water near the factories go into moth lake so all of the waist will end up there

Answer:

C

Explanation:

The universe holds many other galaxies other than the milky way and is way bigger and is also expending larger at an indescribable speed

Answer:

19.05 g have been oxidized

Explanation:

This is the unballanced equation:

H₂SO₄ + Cu → CuSO₄ + SO₂ + H₂O

Let's balance as a redox one:

Cu° oxidizes to Cu²⁺

Cu → Cu²⁺ + 2e⁻

SO₄⁻² reduces to SO₂

We add 2 water in the left side in order to ballance the O, so we add 4 protons to the right side, to ballance the H.

SO₄⁻² + 4H⁺ + 2e⁻ → SO₂ + 2H₂O

In the 2 half reactions, we have the same electrons, we sum both equations, so we have the main equation ballanced (we cancel the e⁻):

2H₂SO₄ + Cu → CuSO₄ + SO₂ + 2H₂O

We determine the moles of sulfuric acid:

M = moles /L → 0.5 mol/L . 1.2L = 0.6 moles

As ratio is 2:1, we propose

2 moles of sulfuric react to 1 mol of Cu

0.6 moles of sulfuric will react to (0.6 . 1) /2 = 0.3 moles of Cu

We determine the mass: 0.3 mol . 63.5 g/mol = 19.05 g

Li2O's molar mass is determined to be 29.88 g/mol. The following is how the number of moles of Li2O is determined: Li2O has a molecular weight of 1.67 mol, or 50.0 g/(29.88 g/mol).

Follow the grams to moles formula to accurately estimate the number of moles, n, of a substance with a particular mass, m (in grams): where n = m/M, where: The material's molar mass is M.

Having more than 50 common moles on your body significantly raises your risk of skin cancer, despite the fact that common moles are fairly common and should not always be a cause for concern. You should see a doctor if you have a lot of moles on your body, no matter what kind of moles they are.

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Answer:

chemical, is the answer your looking for

Answer:

who lives in Barclays what?? this makes no sense

Explanation

The property that cannot be used to determine whether the two powders are the same substance is (d) dissolves in water.

The reason is that the ability to dissolve in water is not a unique property that can be used to identify a specific substance. Many different substances can dissolve in water, and the fact that both powders can dissolve in water does not necessarily mean they are the same substance.

On the other hand, properties such as mass, density, and the ability to burn in air can provide more specific information about the nature of the substance. Mass is a fundamental property that can be measured accurately, and if the two powders have the same mass, it suggests they may be the same substance. Density is a derived property that can also be measured and compared, providing information about the compactness of the material. The ability to burn in air indicates a chemical reactivity that can be used to distinguish between different substances.

Therefore, while properties like mass, density, and burning in air can provide valuable information for identifying substances, the property of dissolving in water alone is not sufficient to determine whether the two powders are the same substance.

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The volume of 1.00 mole of carbon dioxide is 22.4 L.

According to the Ideal Gas Law, PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature in Kelvin.

At STP (standard temperature and pressure), the pressure is 1 atm and the temperature is 273 K. The gas constant R is 0.08206 L atm mol^-1 K^-1.

For 1 mole of any ideal gas at 22.4 L., the volume is 22.4 L. This is known as the molar volume of an ideal gas at STP.

Therefore, the volume of 1.00 mole of carbon dioxide at STP is 22.4 L.

So the correct answer is (b) 22.4 L.

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The compound(s) with the same empirical formula among Formaldehyde, Glucose, Sucrose, and Acetic acid are Acetic acid and Formaldehyde. Option A is correct .

In chemistry, empirical formulas are used to represent the simplest whole number ratio of atoms in a molecule. When two or more compounds have the same empirical formula, they have the same relative number of atoms.

                       To determine the empirical formula of a compound, you must know the atomic masses of each element present in the compound.

                               For the given compounds, the empirical formulas are as follows: Formaldehyde: CH2OGlucose: C6H12OSucrose: C12H22O11Acetic acid: C2H4O2In the given options, Acetic acid (C2H4O2) and Formaldehyde (CH2O) have the same empirical formula. Therefore, the correct option is (d) Acetic acid.

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Answer:

Let's look at another example: 3/4 is the same as 6/8. How do you know this to be true? The proof is in the pie chart diagram. The top circle has 3 out of the 4 parts shaded in. The bottom circle has 6 of the 8 parts shaded in. However, both fractions refer to the same part of the circle.

You can check your results by dividing. Here, both the numerator (6) and the denominator (8) are divisible by 2.

Finding 2nd Fraction Numerators

What would happen if a numerator were missing? Well, if you're given two fractions and told that they are equivalent fractions, you can find the missing numerator using multiplication or division.

In all equivalent fractions, both the numerator and denominator of the first fraction can be multiplied by the same number to get the numerator and denominator of the second fraction.

Say one of the numerators was missing from those pie chart equations:

3 / 4 = x / 8

You can see that there is an x alongside one of the numerators. That represents the number you are trying to find.

The answer lies in discovering what the first denominator can be multiplied by to get the other denominator. You might be good enough at your times tables to know that 4 times 2 is 8. But you can also check this number by dividing the denominator (8) by the denominator (4), which equals 2.

Answer:o It is important to realise that mixing will be small unless there are electrons in the 4a1 LUMO, this is why NH3 is pyramidal while BH3 is planar! ... This mixing is very strong and stabilises the 3a1 MO substantially and hence NH3 is trigonal pyramidal and not planar.

Explanation:

The balanced equation for the reaction is N2(g) + O2(g) → 2NO(g).

The given value for the enthalpy change of the reaction is ΔH = 180.6 kJ. This value represents the heat released per mole of N2 reacted.

To determine the number of moles of NO produced, we need to calculate the moles of N2 reacted. Since the reaction is exothermic, the heat absorbed by the reaction is negative (-2976 kJ). However, it is not physically possible to have a negative number of moles. Therefore, we can conclude that no NO is produced in this case because the heat absorbed is insufficient to drive the reaction.

Using the equation ΔH = -2976 kJ/mol N2, we can set up a proportion:

180.6 kJ/1 mol N2 = -2976 kJ/x mol N2

Solving for x, we find:

x = (-2976 kJ * 1 mol N2) / (180.6 kJ) ≈ -16.46 mol N2

Since the reaction produces 2 moles of NO for every mole of N2, the number of moles of NO produced is twice the number of moles of N2:

Moles of NO = 2 * (-16.46 mol) ≈ -32.92 mol

The given reaction is N2(g) + O2(g) → 2NO(g), and the enthalpy change of the reaction is ΔH = 180.6 kJ. If the reaction absorbs 2976 kJ of heat, the number of moles of NO that can be produced can be calculated. By setting up a proportion, we find that approximately -16.46 moles of N2 are reacted. Since the reaction produces 2 moles of NO for every mole of N2, the calculated moles of NO would be approximately -32.92. However, negative moles are not physically possible, indicating that no NO can be produced in this case due to insufficient heat absorbed by the reaction.

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Answer:

A. carbon dioxide

There are two types of chemical compound one is covalent compound and other is ionic compound, covalent compound formed by sharing of electron and ionic compound formed by complete transfer of electron. Therefore, the correct option is option A.

Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.

An ionic compound is a metal and nonmetal combined compound.  Ionic compound are very hard. They have high melting and boiling point because of strong ion bond. During cellular respiration, organisms convert different kinds of food into glucose. Cells then break down the glucose to provide energy for life activities. Carbon dioxide is the substance which is produced during cellular respiration.

Therefore, the correct option is option A.

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The balanced half-reaction for the reduction of ClO3- to Cl2 in acidic solution is: 20ClO3- + 120H+ + 100e- -> 10Cl2 + 60H2O.

To balance this half-reaction in acidic solution, we need to follow these steps: 1. Identify the species that are oxidized and reduced. In this case, ClO3- is reduced to Cl2. 2. Write the half-reaction for the species that is reduced. The reduction half-reaction is: 2ClO3- + 12H+ + 10e- -> Cl2 + 6H2O. 3. Balance the number of electrons transferred by multiplying the reduction half-reaction by 10: 20ClO3- + 120H+ + 100e- -> 10Cl2 + 60H2O. 4. Finally, check that the number of atoms and charges are balanced on both sides of the equation.

Balance the elements, except for oxygen and hydrogen: In this case, chlorine is already balanced (2 Cl on both sides). Now, we need to balance the oxygens. Balance the oxygens by adding water (H2O) molecules: There are 6 oxygens on the left side and 6 oxygens on the right side (2 in Cl2 and 4 in 3O2), so the oxygens are already balanced. No additional water molecules are needed. Balance the hydrogen atoms by adding H+ ions, and then balance the charges by adding electrons (e-): There are no hydrogens in the equation, so no H+ ions need to be added. The charges on both sides are -2 on the left (2 ClO3-) and 0 on the right (Cl2 and 3O2). To balance the charges, add 2 electrons to the right side: 2ClO3- -> Cl2 + 3O2 + 2e-.

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10.958 g of nitrogen would combine with 1.113g of hydrogen to make the same compound. This is calculated from the concept of mass ratio.

Mass ratio gives the mass of an element that is found in combination with another element. the number of atoms of each specific type must be the same on both sides of the equation. Mass ratio is also called as percent composition of the mass. This principle gives rise to the Law of Constant Composition.

If 2.564 g of nitrogen combines with 0.3689 g of hydrogen to yield compound x. then nitrogen would combine with 1.133 g of hydrogen to make the same compound. According to this,

mass of N2 in the 1st compound / mass of H2 in the 1st compound

= mass of N2 in the 2nd compound / mass of H2 in the 2nd compound

=  3.670 g / 0.5275 g  =  x / 1.575 g

x = 10.958 g of N2

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Answer:

6 m/s^2

Explanation:

a= (v2 - v1)/t

= (50-20)/5

=6

Answer:

6 m/s²

Explanation:

Given, Initial velocity (u) = 20m/s

Final velocity (v) = 50m/s

time taken (t) = 5 sec

Now,

Acceleration = v-u/t

= 50-20/5

= 30/5

= 6 m/s²

Answer: simple and complex.

Explanation:These are also called simple sugars. They're found in refined sugars, like the white sugar you see in a sugar bowl. If you have a lollipop, you're eating simple carbs.

Answer:

Since it has 2 valence electrons

Explanation:

Answer:

.

Explanation:

Answer:

The great ocean conveyor plays a highly significant part in the climate of the planet. It transports heat to the Polar Regions, for example. In doing so, the amount of ice that can be formed in these regions is limited.