Write the number of atoms and name of each element in each chemical formula. Use the periodic table
in Canvas for assistance or you may Google Periodic Table.

(Example: CuNO3 - Copper + 3 oxygen

Hi can someone please help me ? I’ll give you brainlest I just started 6th grade I really need help

Watch as Le Chatelier's principle predicts a color change as the equilibrium of two species of cobalt with distinct colors is upset. The two distinct colors of Co (II) combine to

What does a chemical reaction's equilibrium mean?

When the observable parameters, such as color, temperature, pressure, concentration, etc. do not vary, the process is said to be in equilibrium. If "balancing" is the definition of the word "equilibrium," it follows that a chemical process reflects an equilibrium between the products and reactants involved in the reaction.

The equilibrium constant is what?

Equilibrium: Both mechanical / chemical processes can be brought to it. The rates of the forward and rearward reactions are identical in an equilibrium condition. • Equilibrium parameter: Kc is calculated as the product concentration divided by the reactant concentration, with each component raised to the molecular system. In response,

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Catecholamines undergo conjugation with sulfate or glucuronide in phase II reactions.

In these reactions, the catechol group (-OH and -OH in adjacent carbon atoms) is usually targeted for conjugation. Catecholamines include neurotransmitters such as dopamine, norepinephrine, and epinephrine, which play essential roles in the sympathetic nervous system and stress responses. By conjugating with sulfate or glucuronide, the body can inactivate catecholamines and excrete them in urine, bile, or feces. This is an important step in maintaining the proper balance of these neurotransmitters in the body.

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To calculate the theoretical yield of Magnesium oxide, we need to use stoichiometry to find the amount of MgO that would be produced if all of the Mg and O₂ reacted completely. From the balanced equation, we know that 2 moles of Mg react with 1 mole of O₂ to produce 2 moles of MgO. Using the molar masses of Mg, O₂, and MgO, we can convert the given masses of Mg and O₂ into moles, and then use stoichiometry to find the theoretical yield of MgO, which is 13.4 g.

The percent yield is calculated by dividing the actual yield (12.0 g) by the theoretical yield (13.4 g), and then multiplying by 100%. The resulting value is 89.6%, which means that the reaction did not proceed with 100% efficiency and some MgO was lost or other products were formed.

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The concentration of the HF solution is  0.03.

We know that the concentration has to do with the amount of the substance that is present in the system. We know that what we have is an acid hence we can only talk about the concentration of the acid if we can obtain the amount of the hydrogen ion.

We know that the acid is defined as any substance in which there is the presence of the hydrogen ion is what we call and acid. Since the hydrogen fluoride does have the hydrogen, we can say that the substance that we are dealing with here is an acid.

Thus;

pH = 14 - pOH

pOH = hydroxide ion concentration

pH = hydrogen ion concentration

pH = 14 - 12.5

= 1.5

[HF]  = Antilog (-1.5)

= 0.03

The acid would have a concentration of  0.03.

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There are three kinds of Hydrogen in  2-methyl-2-butene

The correct question is

How many kinds of  hydrogen atoms are present in 2-methyl-2-butene

Atom was discovered by Dalton's Atomic theory , he predicted that each element consist of large number of a very small thing known as atom.

In the structure of 2-methyl-2-butene there are 3 types oh Hydrogen

1. Attached to the Carbon atom connecting the methyl ion to the butene

2. Connected to the last Carbon atom

3. Connected to the Carbon bond having double bond.

Therefore there are three kinds of Hydrogen in  2-methyl-2-butene.

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Answer:

salt dissolving

Explanation:

Hope this helps!

Answer:

As the concentration of Sodium Thiosulphate increases the length of time for cross to disappear decreases. This is because the increase of concentration of Sodium Thiosulphate will increase the rate of reaction between Hydrochloric acid and sodium Thiosulphate particles.

Explanation:

Logic...

The mass of water, H₂O produced from the reaction is 72.06 g

We'll begin by calculating the mass of NH₄NO₃ that reacted and the mass of H₂O produced from the balanced equation.

NH₄NO₃ —> N₂O + 2H₂O

Molar mass of NH₄NO₃ = 80.03 g/mol

Mass of NH₄NO₃ from the balanced equation = 1 × 80.03 = 80.03 g

Molar mass of H₂O = 18.01 g/mol

Mass of H₂O from the balanced equation = 2 × 18.01 = 36.02 g

From the balanced equation above,

80.03 g of NH₄NO₃ reacted to produce 36.02 g of H₂O

Finally, we shall determine the mass of H₂O produced by the reaction of 160.1 g of NH₄NO₃.

From the balanced equation above,

80.03 g of NH₄NO₃ reacted to produce 36.02 g of H₂O.

Therefore,

160.1 g of NH₄NO₃ will react to produce = (160.1 × 36.02) / 80.03 = 72.06 g of H₂O.

Thus, the mass of water, H₂O produced from the reaction is 72.06 g

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Considering that copper occupies Group 11, the ionic compound with a transition metal in it is c. CuSO₄.

A transition metal is any of the set of metallic elements occupying a central block (Groups 3–12) in the periodic table. The differential electron occupies a d subshell.

Which of the following ionic compounds has a transition metal in it?

The ionic compound with a transition metal in it is c. CuSO₄.

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In the given cases, the Effective Annual Rate (EAR) for different compounding periods can be calculated as follows:

a. 11% compounded quarterly: The EAR for this case is 11.46%. This means that if you invest a certain amount of money at an 11% interest rate compounded quarterly, the equivalent annual interest rate is 11.46%.

b. 5% compounded monthly: The EAR for this case is 5.12%. This implies that if you invest a certain amount of money at a 5% interest rate compounded monthly, the equivalent annual interest rate is 5.12%.

c. 9% compounded daily: The EAR for this case is 9.42%. This means that if you invest a certain amount of money at a 9% interest rate compounded daily, the equivalent annual interest rate is 9.42%.

d. 17% with continuous compounding: The EAR for this case is 18.53%. Continuous compounding is a mathematical concept where compounding occurs infinitely often, resulting in a higher effective interest rate compared to other compounding periods.

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Answer:maybe AExplanation:

Molality is not temperature dependent because it is a measure of concentration expressed in units of mol solute per kilogram of solvent, whereas temperature is not included in this definition. It is a function of the mass of the solute and solvent and is therefore unaffected by temperature changes.

On the other hand, molarity is temperature dependent because it is a measure of concentration that is expressed in units of mol solute per liter of solution. Temperature is an important factor in this definition because changes in temperature can lead to changes in volume, and therefore concentration, by altering the number of particles present.

Molality and molarity are two ways of measuring concentration. While both values are important in various chemical calculations, they have distinct definitions and applications. Molality (m) is defined as the number of moles of solute per kilogram of solvent. Molality is a measure of concentration that is independent of temperature. This means that molality remains constant even if temperature changes, as long as the mass of the solute and solvent stays the same. This is because temperature does not affect the number of particles in a solution, and molality is defined based on the number of particles per unit mass. Molarity (M) is defined as the number of moles of solute per liter of solution. Molarity is a measure of concentration that is temperature dependent. This is because changes in temperature can lead to changes in volume, which can alter the concentration of a solution. As temperature increases, the volume of a solution increases, which leads to a decrease in concentration. Conversely, as temperature decreases, the volume of a solution decreases, which leads to an increase in concentration. Hence, molarity is temperature dependent and is not as reliable as molality when it comes to making precise chemical calculations.

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Answer:

131.5177 grams

Explanation:

You divide by Avogadro's number to turn it into moles then multiply by molar mass.

Answer:

Explanation:

may u explain what u mean then i will be able to help u because i like knows this but what u mean will be better so i can tell u the right answer thanks have a good day

The function y = |x| - 3 is translated 3 units downward from the parent function.

The parent function of y = |x| is the absolute value function. The function y = |x| - 3 is obtained by subtracting 3 from the parent function.

we make a comparison in order to determine the translation of the function, it to the parent function.

In the question,  the translation is in the vertical direction and because  we subtract 3 from the parent function, the graph of y = |x| - 3 is shifted downward by 3 units compared to the parent function y = |x|.

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To determine Eo for the given reaction, we can use the equation:  Eo(cell) = Eo(cathode) - Eo(anode)

The reduction potential for the cathode is the reduction potential of Ti²⁺, which is -1.63 V.

The reduction potential for the anode is the reduction potential of Fe³⁺, which is 0.77 V.

Plugging the values into the equation, we have:

Eo(cell) = (-1.63 V) - (0.77 V)

Eo(cell) = -2.40 V

Therefore, the standard cell potential (Eo) for the given reaction is -2.40 V.

This negative value indicates that the reaction is not spontaneous under standard conditions. The electrons flow from the anode (Fe³⁺) to the cathode (Ti²⁺), resulting in a negative cell potential. The reaction would require an external energy source to proceed.

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The volume of NaOH solution used in the titration is 22.50 mL or 0.0225 L. The molarity of the NaOH solution is 0.210 mol/L.

To determine the molarity of the NaOH solution, we can use the balanced chemical equation for the reaction between NaOH and KHP:

NaOH + KHP → NaKP + H2O

From the equation, we can see that one mole of NaOH reacts with one mole of KHP. Therefore, the number of moles of NaOH used in the titration can be calculated by:

moles NaOH = molarity of NaOH solution × volume of NaOH solution used (in liters)

The volume of NaOH solution used in the titration is 22.50 mL or 0.0225 L.

To calculate the molarity of the NaOH solution, we need to determine the number of moles of NaOH used in the titration. From the balanced equation, we can see that one mole of KHP reacts with one mole of NaOH. The mass of KHP used in the titration is 0.969 g, which corresponds to the number of moles of KHP used:

moles KHP = mass of KHP / molar mass of KHP

= 0.969 g / 204.22 g/mol

= 0.004738 mol

Since the stoichiometry of the reaction is 1:1, the number of moles of NaOH used in the titration is also 0.004738 mol. Substituting these values into the above equation, we get:

0.004738 mol = molarity of NaOH solution × 0.0225 L

Solving for the molarity of the NaOH solution, we get:

molarity of NaOH solution = 0.004738 mol / 0.0225 L

= 0.210 mol/L

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Answer:

2H2O2→2H2O+O2

Explanation:

This reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen.

Add 2 molecules of hydrogen peroxide and 2 molecules of water. Since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

2H2O2→2H2O+O2

Answer:

A

nitrogen (N), antimony (Sb), bismuth (Bi)

Explanation:

Answer:

A. nitrogen (N), antimony (Sb), bismuth (Bi)

Explanation:

Answer:

THE MOLARITY IS 2.22 MOL/DM3

Explanation:

The solution formed was as a result of dissolving 37.5 g of Na2S in 217 g of water

Relative molecular mass of Na2S = ( 23* 2 + 32) = 78 g/mol

Molarity in g/dm3 is the amount of the substance dissolved in 1000 g or 1 L of the solvent. So we have;

37.5 g of Na2S = 217 g of water

( 37.5 * 1000 / 217 ) g = 1000 g of water

So, 172.81 g/dm3 of the solution

So therefore, molarity in mol/dm3 = mol in g/dm3 / molar mass

Molarity = 172.81 g/dm3 / 78 g/mol

Molarity = 2.22 mol/dm3

The molarity of the solution is 2.22 mol/dm3

Explanation:

Option (A). Cooling must take place ( Water vapor cools and condenses to form clouds. H. Return to liquid water or ice. To condense, you need a solid that glows in water vapor. )

What is Water Vapor?

Water vapor is gaseous water, not liquid. It can be formed by either evaporation or sublimation processes. Unlike clouds, fog, and haze, which are liquid water particles suspended in the air, water vapor itself is a gas and cannot be seen.

Is water vapor simply H2O?

Water vapor has the same chemical formula as ordinary water, H2O, but the water molecules in steam interact less with each other and are less structured than water and ice. Whether water is a liquid or a gas depends on pressure, temperature, and relative humidity.

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The results of the technician’s combustion experiment do not contradict the law of conservation of mass because some products escaped as gaseous carbon (iv) oxide, water vapor, and other gases.

The statement of the law of conservation of mass states that matter cannot be created nor destroyed, but change from one form to another.

This helps to explain that no loss in mass of a  substance occurs in ordinary chemical reactions, rather, the sum of the masses of the reactants at the beginning of a reaction is equal to the sum of the products at the end of the reaction.

The balancing of chemical equations also follows this law.

Considering the given reaction:

The technician determined the mass of the firewood and oxygen reactants before burning to be 2.72 kg.

At the end of the reaction, after the firewood finished burning, the pile of cooled ash that remained had a mass of 0.095 kg.

When comparing the mass of the reactants and products, the mass of the product seems to be less than the mass of the reactants in contradiction to the law of conservation of mass.

However, there is no loss in mass of the materials because some products escaped in the form of gas into the atmosphere.

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Answer:

AMBANTOT MO MALIGO KANA

Answer:  K only has 1 valence electron.  It will leave with only a little effort, leaving behind a positively charged K^+1 atom.

Explanation:  A neutral potassium atom has 19 total electrons.  But only 1 of them is in potassium's valence shell.  Valence shell means the outermost s and p orbitals.  Potasium's electron configuration is 1s^2 2s^2 2p^6 3s^2 3p^6 4s^1.  The 4s orbital is the only orbital in the 4th energy level.  So it has a valency of 1.  This means this electron will be the most likely to leave, since it is the lone electron in the oyutermost energy level (4).  When that electron leaves, the charge on the atom go up by 1.  The atom now has a full valence shell of 3s^2 3p^6, the same as argon, Ar.

Density =mass/volume

=6/3

=2

Explanation:

the answer is C- H2O (water)

Answer:

9.90

Explanation:

Given [H+] = 1.25 x 10^-10 M, we can calculate the pH using the formula:

pH = -log10([H+])

pH = -log10(1.25 x 10^-10)

Using logarithmic properties:

pH = -log10(1.25) - log10(10^-10)

Since log10(10^-10) is equal to -10:

pH = -log10(1.25) - (-10)

pH = -log10(1.25) + 10

Now, evaluating the logarithm using a calculator:

pH = -0.0969 + 10

pH = 9.9031

Therefore, the pH of the solution with [H+] = 1.25 x 10^-10 M is approximately 9.9031. Rounding it to two decimal places, the pH is approximately 9.90.

43.55 grams of ammonium nitrite is needed to form 24.5 grams of water.

According to the reaction, ammonium nitrite (NH₄NO₂) decomposes into nitrogen (N₂) and water (H₂O).

To determine how many grams of ammonium nitrite are needed to form 24.5 grams of water, follow these steps:

1. Write the balanced equation: 2 NH₄NO₂ (aq) → 2N₂ (g) + 4H₂O (l)

2. Find the molar mass of water (H₂O) and ammonium nitrite (NH₄NO₂):

H₂O: (2 x 1.01) + 16.00 = 18.02 g/mol

NH₄NO₂: (2 x 1.01) + 14.01 + 16.00 + 2 x 16.00 = 64.04 g/mol

3. Determine the moles of water formed from 24.5 grams of water: Moles of H₂O = (24.5 g) / (18.02 g/mol) = 1.36 mol

4. Use the stoichiometry of the balanced equation to find the moles of ammonium nitrite needed:

2 NH₄NO₂ : 4 H₂O = 1 mol NH₄NO₂ : 2 mol H₂O

Moles of NH₄NO₂ = (1.36 mol H₂O) x (1 mol NH₄NO₂ / 2 mol H₂O) = 0.68 mol NH₄NO₂

5. Convert the moles of ammonium nitrite to grams: Grams of NH₄NO₂ = (0.68 mol) x (64.04 g/mol) = 43.55 g

So, 43.55 grams of ammonium nitrite is needed to form 24.5 grams of water.

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Answer:

-2

The charge on an oxygen ion is -2. An oxygen atoms contain six electrons in its valence electron shell.

Explanation: