When two elements bond and
form a compound, what
happens to their electrons?
A. They share or give away their
electrons.
B. Both elements lose electrons.
C. Nothing happens to their electrons.

Based on the given data, the relationship between rate and concentration is exponential.

A proposed rate law for the reaction based on the given data is:

Collision theory suggests that the rate of a chemical reaction is proportional to the frequency and energy of collisions between the reactant molecules.

As the concentration of iodate ions decreases, the frequency of collisions between reactant molecules decreases, which leads to a decrease in the rate of the reaction.

At higher temperatures, the kinetic energy of the reactant molecules increases, which increases the frequency and energy of collisions between reactant molecules.

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When balancing a chemical equation, we need to know that we can always change the coefficients but we can't change the subscripts.

Therefore, the answer is: The coefficients.

Answer:

A logic bomb and a time bomb are both types of malicious software or code that are designed to cause harm to a computer system or network. Here's a brief explanation of each:

Logic Bomb:

A logic bomb is a piece of code or software that is intentionally inserted into a system to execute a malicious action when specific conditions are met. It remains dormant until triggered by a predefined event or circumstance, such as a specific date, time, or user action. Once triggered, the logic bomb may perform various harmful actions, such as deleting files, corrupting data, or disrupting system functionality. The purpose of a logic bomb is often to cause damage or to gain unauthorized access to a system.

Time Bomb:

A time bomb is similar to a logic bomb, but it is specifically designed to activate or execute its malicious payload at a certain date or time. It is usually programmed to remain undetected until the predetermined time arrives. The time bomb can be set to trigger after a specific time period or on a particular date, at which point it may carry out destructive actions. Time bombs can be used by attackers to target specific events or to coordinate an attack to occur simultaneously across multiple systems.

Both logic bombs and time bombs are considered forms of malicious code or malware and are used with malicious intent to disrupt, damage, or compromise computer systems or networks. They can be extremely harmful, and it is important to have strong security measures, such as antivirus software and regular system updates, to protect against such threats.

Explanation:

The mass (in grams) of oxygen gas that were bubbled out, given that 283 grams of HgO decomposed is 20.9 g

We'll begin by writing the balance equation for the reaction. This is given below:

2HgO -> 2Hg + O₂

From the balanced equation above,

433.18 g of HgO decomposed to produce 32 g O₂

Now, we shall determine the mass of O₂ that will bubble out when 283 g of HgO decompose. Details below:

From the balanced equation above,

433.18 g of HgO decomposed to produce 32 g O₂

Therefore,

283 g of HgO will decompose to produce = (283 × 32) / 433.18 = 20.9 g of O₂

Thus, the mass of CO₂ that bubbled out is is 20.9 g

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Answer:

Tetrahedral

Explanation:

The molecular geometry of SiCl₄ is a tetrahedral shape. According to the VESPR molecular theory, the compound has a shape of a tetrahedron.

The new volume : 0.07 L

Boyle's Law  

At a constant temperature, the gas volume is inversely proportional to the pressure applied  

\(\rm p_1V_1=p_2.V_2\\\\\dfrac{p_1}{p_2}=\dfrac{V_2}{V_1}\)

P₁=1 atm

V₁=0.39 L

P₂=5.6 atm

\(\tt V_2=\dfrac{P_1.V_1}{P_2}\\\\V_2=\dfrac{1\times 0.39}{5.6}\\\\v_2=\boxed{\bold{0.07~L}}\)

If you only have the percent composition of each element in a give compound, you can't determine yet the empirical formular for the compound. The problem is, the percent composition only gives relative numbers for each element. What can be determined is the empirical stochiometry of one element relative to the others.

For example, supose you have a compound with element X and Y, with the percent composition you can determine how much X you have relative to how much Y you have. Say you determine that for each 2 X you have 3 Y, the formula can be X₂Y₃ but it can also be X₄Y₆ or even othre possibilities.

To determine the empirical formula you need to know how many of one of the elements you have in each compound. A common way of getting the empirical formula is to use the percent composition and, in addition, the molar mass of the compound, which will make it possible to get the empirical formula from the relative ratios of each element you have.

Overall, the net ionic equation represents the transfer of electrons between iodide and iodate ions, resulting in the formation of iodine and water.

What are chemical reactions?

When atoms establish or break chemical bonds, chemical processes take place. Reactants are substances that begin a chemical reaction, while products are compounds that are created as a result of the reaction.

The balanced chemical equation for the reaction between potassium iodide (KI) and potassium iodate (KIO3) in aqueous solution is:

5 KI + KIO₃ + 3H₂O → 3 K₂SO₄ + 6 HI

To write the net ionic equation, we need to eliminate the spectator ions, which are the ions that do not participate in the chemical reaction. In this case, the spectator ions are the potassium ions (K+) and sulfate ions (SO42-).

The net ionic equation is:

IO₃- + 5 I- + 6 H+ → 3 I₂ + 3 H₂O

In this reaction, iodate ion (IO₃-) is reduced to iodine (I₂) and iodide ions (I-) are oxidized to iodine (I₂). The oxidation half-reaction is:

2 I- → I₂ + 2 e-

The reduction half-reaction is:

IO₃- + 6 H+ + 6 e- → I₂ + 3 H₂O

Hence, Overall, the net ionic equation represents the transfer of electrons between iodide and iodate ions, resulting in the formation of iodine and water.

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Answer:

0.0559 mol

Explanation:

Step 1: Given and required data

Step 2: Convert "P" to atm

We will use the conversion factor 1 atm = 760 torr.

750 torr × 1 atm/760 torr = 0.987 atm

Step 3: Convert "T" to Kelvin

We will use the following expression.

K = °C + 273.15

K = 17.0 °C + 273.15 = 290.2 K

Step 4: Calculate the number of moles of air

If we assume air behaves as an ideal gas, we can calculate the moles (n) of air using the ideal gas equation.

P × V = n × R × T

n = P × V/R × T

n = 0.987 atm × 1.35 L/(0.0821 atm.L/mol.K) × 290.2 K = 0.0559 mol

Answer:

A Elements

Explanation:

The substances on the periodic table are examples of elements.

An element is a distinct substance that cannot be split-up into simpler substances. Such substances consists of only one kind of atom.

There are over one hundred elements that are known to date.

The boiling point of benzene when the external pressure is 440 torr is 80.1 °C (176.2 °F).

What is benzene?

Benzene is an organic compound composed of six carbon atoms in a ring structure, with one hydrogen atom attached to each carbon atom. It is a highly flammable, colorless liquid with a sweet smell. Benzene is a natural component of crude oil and is one of the most important organic chemicals used in industry. It is used in the production of plastics, resins, synthetic fibers, rubber, pesticides, detergents, drugs, and dyes. It is also used as a solvent for fats, oils, waxes, resins, and inks. Benzene is classified as a carcinogen and its exposure can cause a variety of adverse health effects, including acute myelogenous leukemia, lymphomas, and other forms of cancer.

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Because HCl is a stronger acid than acetic acid, the pH of 0.01M acetic acid has greater value than the pH of 0.01M HCl. 2.88 is the  pH of a 0.01 M acetic acid.

Any hydrogen that comprises a material capable of giving a proton (a hydrogen ion) to another chemical is defined as acid. A base is indeed a molecule or ion that can receive a hydronium ion from just an acid.

1)Because HCl is a stronger acid than acetic acid, the pH of 0.01M acetic acid has greater value than the pH of 0.01M HCl. The pH value of stronger acid is lower.

2)CH\(_3\)COOH + H\(_2\)O  ⇄ CH\(_3\)COO⁻+  H\(_3\)O⁺

 0.01             0               0

 -x              +x                +x

 0.01-x           +x        +x

Ka=[ CH\(_3\)COO⁻][H\(_3\)O⁺]/[CH\(_3\)COOH]

1.8×10⁻⁵ = [x][x ]/[  0.01-x ]

x=1.34×10⁻³

pH = -log[H⁺]

     =  -log[1.34×10⁻³]

     =2.88

Therefore, because HCl is a stronger acid than acetic acid, the pH of 0.01M acetic acid has greater value than the pH of 0.01M HCl. 2.88 is the   pH of a 0.01 M acetic acid.

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Answer:

To calculate the heat released in this reaction, we need to use the formula:

Q = mcΔT

where Q is the heat released, m is the mass of the solution, c is the specific heat capacity of the solution, and ΔT is the change in temperature.

Assuming the density of the solution is 1 g/mL, the mass of the solution is 100 g (50 mL HCl + 50 mL NaOH). The specific heat capacity of the solution can be assumed to be the same as that of water, which is 4.18 J/g°C.

The change in temperature can be calculated as the final temperature minus the initial temperature:

ΔT = 30°C - 22°C = 8°C

Therefore, we have:

Q = (100 g) * (4.18 J/g°C) * (8°C) = 3344 J

The heat released in the reaction is 3344 J.

The value of ΔH for the reaction can be calculated using the formula:

ΔH = -Q/n

where Q is the heat released, and n is the number of moles of limiting reactant used in the reaction. In this case, the limiting reactant is NaOH, and we can calculate the number of moles of NaOH from its concentration and volume:

n(NaOH) = (0.1 L) * (1 mol/L) = 0.1 mol

Therefore, we have:

ΔH = -(3344 J) / (0.1 mol) = -33,440 J/mol

The value of ΔH for the reaction is -33,440 J/mol, which is negative because the reaction is exothermic (heat is released).

Answer:

Na = Sodium

K = Potassium

Br = Bromine

O = Oxygen

Fe = Iron

Explanation:

No it’s not balanced. The Na are not balanced (option A)

the given chemical equation is not balanced because It is missing some coefficients to balance the number of atoms on both sides of the equation.

The balanced chemical equation for the reaction is:

Na2SO4 + Mg(OH)2 → MgSO4 + 2NaOH

This equation shows that two molecules of sodium hydroxide (NaOH) are produced for every one molecule of magnesium hydroxide (Mg(OH)2) consumed, and that the number of sodium (Na) atoms is balanced on both sides of the equation.

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Answer:

where is the question

Explanation:

Answer:

True

Explanation:

If you look at a map they look like they connect and the have similarities like mountains

Answer:

It is true c:, I hope I helped yoy

Answer:

Sodium hydrogen sulphite

Explanation:

The white precipitate formed is because of the sulphite ion and a carbonyl group formed

\(.\)

Number of atoms of P in 802 gm of Na3PO4  is calculated to be equal to  23.254 *10^21 .

The mass in grams of 1 mole of the substance is known as molar mass. We can obtain molar mass of a substance by summing the molar masses of its component atoms. Then we can use the calculated molar mass to convert between mass and number of moles of substance.

Molar mass of P is 30.97

Number of atoms of P = 30.97/802 * 6.22 *10^23

Number of atoms of P in 802 gm of Na3PO4 = 23.254 *10^21.

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Answer:

Cl-

Explanation:

Neutral (Cl) have 7 electron, but Cl- have 8 electron due to gain of 1 electron

Answer:

1.09

Explanation:

Keep in mind that the volume of the solution changes during this titration, so to compute the amount of hydronium that is neutralized during this addition of base (in order to calculate the final pH of the solution), we must calculate the moles of all species in solution initially present. Because both NaOH and HCl ionize completely:initial mol OH−=mol NaOH=(0.0050 L)(0.10 molL)=0.00050 mol OH−initial mol H3O+=mol HCl=(0.050 L)(0.10 molL)=0.0050 mol H3O+The acid is in excess, so all of the OH− present will neutralize an equivalent amount of H3O+, forming water. Thus we simply subtract the moles of hydroxide from the moles of hydronium in solution to find the resultant moles of H3O+ after this neutralization:final mol H3O+= initial mol H3O+−initial mol OH−final mol H3O+=0.0050 mol−0.00050 mol=0.0045 mol H3O+We now calculate the total volume of the solution by adding the volumes of acid and base initially combined: 0.050 L+0.0050 L=0.055 LTo get [H3O+], we divide the final moles of hydronium by the final solution volume:[H3O+]=final mol H3O+ total volume=0.0045 mol0.055 L≈0.08181molLFinally, to find pH:pH=−log[H3O+]=−log(0.08181)=1.09Since the hydronium concentration is only precise to two significant figures, the logarithm should be rounded to two decimal places.

Answer:

A. Acidity or the basic nature of a substance

Answer:

the desk is 84 cm long

Explanation:

A hexagon always have 6 sides.

A tricycle always have 3 wheels. That's why it's called tri

A tables Always have 4 legs. Well in most cases.

But a desk is not always 84 cm

The following is not an example of an exact number, is the desk is 84 cm long. The correct option is C.

It is an arithmetic value used to indicate an and mount, is called a number. A number is a mathematical concept that is used for counting, measuring, and labeling.

Thus, mathematics is built on numbers. For instance, this is a single butterfly, and there are four. The main numbers are 1 to 9.

Here, in the given options, six sides is an actual number, because six sides can be counted. There are three wheels, that are given, which also can be counted.

The 84 cm is the measurement value, which is not an actual number. The table has four legs. So the legs can also be counted.

Thus, the correct option is C. The desk is 84 cm long.

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A  substance can dissolve in another when they have thee same type of intermolecular interaction.

The term solubility of a solute refers to the extent to which a solute dissolve in a solvent. We must know that a substance can dissolve in another when they have thee same type of intermolecular interaction.

Thus;

a) Octane (C8H18) mixes well with CCl4 because they are both non polar substances.

b) Methanol (CH3OH) is mixed with water in all ratios because the both are polar substances.

c) NaBr dissolves very poorly in acetone (CH3 ― CO ― CH3) because acetone is only slightly polar.

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Answer:

I think it's 13.57

Explanation:

I hope this helps

The chemical mass in million phosphorus atoms is 309,737.62 gram.

Phosphorus is a chemical element with the atomic number 15 and the atomic symbol P. The atomic weight of phosphorus is 30.973762 amu (atomic mass units). Therefore, the mass of one million phosphorus atoms in grams is equal to

1,000,000 atoms × 30.973762 amu/atom = 309,737.62 grams

However, it's worth noting that this is a very large number of atoms, and it's unlikely that you would need to measure such a large quantity of phosphorus atoms in practice. It's more common to work with smaller amounts of atoms, typically on the order of a few grams or less.

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The mass of one million phosphorus atoms is approximately 0.05141 grams

To determine the mass of one million phosphorus atoms in grams, you can multiply the atomic mass of phosphorus by the number of atoms and convert the result to grams.

The atomic mass of phosphorus is 30.973761 unified atomic mass units (u). One million atoms are equal to 1 x \(10^6\) atoms. When you multiply the atomic mass by the number of atoms and convert the result to grams, you find that the mass of one million phosphorus atoms is approximately 0.05141 grams.  

This calculation assumes that you are using the atomic mass of phosphorus in u and converting it to grams using the conversion factor of 1 g/6.022 x \(10^{23}\)u.

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a. 4 Al + 3 O2 -> 2 Al2O3

b. To calculate the limiting and excess reactant we need to first do a molar ratio between the two reactants, by our balanced equation we know that the ratio is 4:3, which means for every 4 moles of aluminum we will need 3 moles of oxygen to react, so when we have 1.2 moles of oxygen gas, how many moles of aluminum do we have?

4 Al = 3 O2

x Al = 1.2 O2

x = 1.6 moles of Al

How many grams would 1.6 moles of Al be? To answer that we need its molar mass, which is 26.98 g/mol

26.98 g = 1 mol

x grams = 1.6 moles

x = 43.17 grams of Al

We see we have an excess of Al, 60 grams when we only needed 43.17 grams, therefore the limiting reactant is Oxygen and the excess is Aluminum

b. Oxygen gas

c. Aluminum

d. subtracting 60 grams - 43.17 grams

The left over will be 16.83 grams.

e. For every 3 moles of Oxygen we will have 2 moles of Al2O3, therefore for 1.2 moles of Oxygen we will end up with 0.8 moles of Al2O3. The molar mass of Al2O3 is 101.96 g/mol, but when we have only 0.8 moles, the mass will be:

81.57 grams

The reaction can be said to be at equilibrium when the reaction rates of making products and using reactants are equal.

When the rates of the forward and reverse reactions are equal and the concentrations of the reactants and products don't change over time, a chemical reaction is said to be in equilibrium.

When the system reaches equilibrium, it is in a state of balance, which means that the concentrations of the reactants and products have not changed significantly.

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