how many moles of naoh will react with 1 mole of h2so4 in the below unbalanced reaction?

Answer: 20 , 40

I want know the answer now !

Answer:

chemical change energy can neither be created nor destroyed.

Explanation:

the rule of law of conversion states that energy can only be converted from said energy to another. it cannot be created and destroyed.

Answer:

D. Neither created nor destroyed

Explanation:

The law of conservation of energy states that energy is neither created nor destroyed.

Answer:

Magnesium chloride

Answer: An insulator would be made out of material unable to conduct electricity due to lack of fluid movement for electrons, such as rubber. Rubber properties not only prevents them from freely moving, but also helps electrons stay tightly bound to each other.

Hope this helps ^_^

Answer:

2Na + 2H2O → 2NaOH + H2

Explanation:

A balanced equation is an equation for a chemical reaction in which the number of atoms for each element in the reaction and the total charge are the same for both the reactants and the products.

The concentration of arsenic in milk, which is 3.57 μg/L, can be converted to ounces per gallon. The correct answer is option D) 3.84 x 10^4 oz/gal.

To convert the concentration of arsenic from micrograms per liter (μg/L) to ounces per gallon (oz/gal), we need to follow a series of conversion steps. First, we need to convert micrograms (μg) to grams (g). There are 1,000 micrograms in a milligram (mg) and 1,000 milligrams in a gram, so 3.57 μg is equivalent to 0.00357 mg. Next, we need to convert milliliters (mL) to gallons (gal). Since 1 liter (L) is equal to 1,000 milliliters (mL) and 1 gallon is approximately 3,785.41 milliliters, we can calculate that 946.4 mL is approximately 0.25 gallons. Now, we can calculate the concentration in ounces per gallon. One pound (lb) is equal to 16 ounces (oz), and we know that 1 lb is approximately 0.4536 kg. Since 1 gallon is equal to 4 quarts (qt), and 1 quart is equal to 32 ounces, we can multiply all the conversion factors together:

0.00357 mg/L * 0.25 gal * 16 oz/lb * (1 lb/0.4536 kg) = 3.84 x 10^4 oz/gal

Therefore, the concentration of arsenic in ounces per gallon is approximately 3.84 x 10^4 oz/gal, which corresponds to option D).

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Answer:

Digital scales /weight scales (the stuff you weigh yourself to see how much lbs you are)

Explanation:

The following statements are true regarding the use of indicators in selective media: they provide a visible change in the media indicating a reaction.

They often indicate whether an acid or base has been produced they may react with a product from a biochemical reaction to produce a color change. Indicators are substances that change color based on their response to an alteration in pH, such as the presence of acidic or basic components. Indicators are used in selective media to reveal the presence of the required organisms. The use of indicators in selective media has several benefits.

When the organism grows in a selective medium that has been supplemented with an indicator, the presence of the organism is immediately apparent because the indicator undergoes a color change as a result of the metabolic activity of the organism.

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Answer:

Ver explicacion

Explanation:

Como se mencionó en la pregunta, un catalizador aumenta la velocidad de una reacción pero él mismo no participa en la reacción.

La descomposición del peróxido de hidrógeno se muestra mediante la ecuación;

2H2O2 (l) ------> 2H2O (l) + O2 (g)

La enzima involucrada en el proceso es la catalasa.

Answer:

physical

Explanation:

Answer/Explanation:

Water being absorbed is a physical change. Water tends to change shape and phase of mater a lot. When water is soaked up it is spread apart through its new container that absorbed it.

The organization is working on fostering the ethical and social responsibility conditions in the organizational environment.

The sentence suggests that the managers of Vortex Inc. are emphasizing the significance of team norms, business ethics, and respect for human rights within the organization. This indicates that the organization is actively focusing on creating an environment that promotes ethical behavior, social responsibility, and upholding the rights and dignity of individuals.

By prioritizing team norms, the organization is emphasizing the importance of establishing shared expectations and standards of behavior among team members. This helps to create a cohesive and collaborative work environment where everyone understands and respects the established norms.

Hence, the managers of Vortex Inc. stresses the importance of team norms, business ethics, and respect for human rights in the organization. This implies that the organization is working on the fostering the ethical and social responsibility conditions in the organizational environment.

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Answer:

 C.

Energy is transferred from the water to the shore, but the water does not travel with the energy.

Explanation:

STUDY ISLAND TOLD ME

Answer:

•4x^2 = 16

•2(x - 2)^2 = 0

Explanation:

To solve this problem, we can simply substitute x = -2 and x = 2 into each of the given equations, and see which ones are true.

Let's start with x = -2:

x^2 - 4 = 0: (-2)^2 - 4 = 0, so this equation is not true for x = -2.

x^2 = -4: (-2)^2 = 4, which is not equal to -4, so this equation is not true for x = -2.

3x^2 + 12 = 0: 3(-2)^2 + 12 = 12, which is not equal to 0, so this equation is not true for x = -2.

4x^2 = 16: 4(-2)^2 = 16, so this equation is true for x = -2.

2(x - 2)^2 = 0: 2(-2 - 2)^2 = 0, so this equation is true for x = -2.

Now let's try x = 2:

x^2 - 4 = 0: 2^2 - 4 = 0, so this equation is not true for x = 2.

x^2 = -4: 2^2 = 4, which is not equal to -4, so this equation is not true for x = 2.

3x^2 + 12 = 0: 3(2)^2 + 12 = 36, which is not equal to 0, so this equation is not true for x = 2.

4x^2 = 16: 4(2)^2 = 16, so this equation is true for x = 2.

2(x - 2)^2 = 0: 2(2 - 2)^2 = 0, so this equation is true for x = 2.

Therefore, the two equations that are true for both x = -2 and x = 2 are:

4x^2 = 16

2(x - 2)^2 = 0

In summary, by substituting x = -2 and x = 2 into each equation and checking for equality, we found the two equations that are true for both values of x.

The question is incomplete, the complete question is;

Balance the following equations by inserting the proper coefficients.

CH4 + O2 ---------------> CO2 +H2O

CaCl2 + AgNO3 ----->Ca(NO3)2 +AgCl

C2H6O + O2----------->CO2 +H2O

Answer:

CH4 + 2O2 ---------------> CO2 +2H2O

2AgNO3 + CaCl2 → Ca(NO3)2 + 2AgCl

C2H6O + 3O2 → 2CO2 + 3H2O

Explanation:

You see, when we set out to balance chemical reaction equations, ultimately, our aim is to ensure that the number of atoms of each element on the reactant side is exactly the same as the number of atoms of the same element on the products side.

We do this by counting the number of atoms required to have a balanced reaction equation and then adding coefficients in order to have a balanced chemical reaction equation.

This is what have been done in balancing the three reaction equations shown in the answer section.

Explanation:

Step 1: Write out the chemical formula of the compound.

Magnesium Chloride = MgCl^2

Step 2: Convert moles into number of compounds using Avogadro's number

0.5 moles MgCl^2 ⋅(6.022⋅10^23 - 1 mole MgCl^2)= 3.011⋅ 10^23

Step 3: Determine how many Chloride ions there will be in 1 compound

There will be 2 Cl− ions in each compound (Cl^2 part)

Step 4: Multiply the number from Step 2 by the number in Step 3

3.011 ⋅ 10^23 ⋅ 2= 6.022 ⋅ 10^23

We do this because the ratio is 2 Cl− ions for every 1 compound.

In the case of finding how many ions in general (both sodium and chloride), we would multiply by 3 because there are 3 ions per 1 compound.

I hope this helped!

1 mole of NaCl = 2 moles of ions, so 0.5 moles of NaCl contain 1 mole of ions.

Sodium chloride (NaCl) dissociates into sodium ions (Na⁺) and chloride ions (Cl⁻) in a 1:1 ratio. This means that for every mole of NaCl, you get one mole of sodium ions and one mole of chloride ions.

Therefore, 0.5 moles of NaCl will yield 0.5 moles of sodium ions and 0.5 moles of chloride ions. Since you asked about the total number of ions, you need to add the number of sodium ions and chloride ions together. As a result, 0.5 moles of NaCl will contain a total of 1 mole of ions.

The key factor here is the balanced stoichiometry of the dissociation reaction, which gives a 1:1 ratio of ions for NaCl.

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Answer:

The electronic configuration of the element with Atomic number 19 is 2,8,8,1. The element is potassium. It is an alkali metal with one valence electron.

Answer:

4 4 8 4 is the balanced equation

1) A 45.7 g sample of glass was brought to thermal equilibrium with boiling water and then transferred to 250.0 g of water that was at 22.5 °C. This combination reached thermal equilibrium at 24.2 °C. What is the specific heat capacity of glass?

2) What mass of silver at 100.0 °C, when added to 150.0 g of water at 21.0 °C, would raise the water’s temperature to 24.0 °C ?

3) The molar heat of fusion of H2O is 6.1 kJ/mole. What amount of energy would be needed to melt 376 g of ice at 0.0 °C?

Sure, here is the completed atomic orbital diagram for the ground-state electronic configuration of sulfur:

1s: ↑↓
2s: ↑↓
2p: ↑↓ ↑↓ ↑
3s: ↑↓
3p: ↑↓ ↑↓ ↑

In this diagram, the arrows represent the electrons in each orbital. The numbers (1s, 2s, etc.) refer to the different energy levels of the atom, and the letters (s, p, etc.) refer to the different sublevels within each energy level. The ground state is the lowest energy state of the atom, so this diagram shows all of the electrons in their lowest possible energy levels.


So, the ground-state electronic configuration for sulfur is:

1s² 2s² 2p⁶ 3s² 3p⁴

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Answer:

2.03 × 10⁻⁴ moles

Explanation:

To convert atoms to moles, use Avogadro's number (6.022 × 10²³).

(1.22 × 10²⁰ atoms)/(6.022 × 10²³ atoms/mol) = 2.03 × 10⁻⁴ mol

Answer:

7.35×1023 atoms

Explanation:

The three functions of the stem:

Answer:

21.32 L

Explanation:

First, convert grams to moles using molar mass. C has a mass of 12 and O has a mass of 16. CO2 will therefore have a mass of 28 g/mol. Divide 22 by 28 to get about 0.79 moles. Convert C to Kelvin by adding 273; getting 323K. Then use the ideal gas law (PV=nRT) to solve for V (V=nRT/P). This gets you 21.32 L, hope this helps!

Answer:

zn +2Agno3= Zn(No3)2 +2Ag

Explanation:

atomic number

The number of protons in the nucleus of an atom is called its atomic number: the atoms of a particular element all have the same number of protons

Answer:

Atomic number is given to the number of protons in a particular atom.

Hope it helps

Please mark me as the brainliest

Thank you

Answer:

Here is ur answer...

Explanation:

2) Half-filled d orbital increases the stability of the element.

To find the percent abundance of each isotope of silver, we can use the following formula: % abundance of isotope = (mass of isotope / average atomic mass) x 100We have two isotopes of silver with masses of 106.90509 u and 108.9047 u.

The average molar mass of silver is 107.868 u. Using the formula, we can find the percent abundance of each isotope:% abundance of isotope 1 = (mass of isotope 1 / average atomic mass) x 100% abundance of isotope 1 = (106.90509 u / 107.868 u) x 100% abundance of isotope 1 = 0.9617 x 100% abundance of isotope 1 = 96.17%% abundance of isotope 2 = (mass of isotope 2 / average atomic mass) x 100% abundance of isotope 2 = (108.9047 u / 107.868 u) x 100% abundance of isotope 2 = 1.0383 x 100% abundance of isotope 2 = 103.83%Therefore, the percent abundance of the first isotope is 96.17% and the percent abundance of the second isotope is 103.83%. However, it is not possible for an isotope to have a percentage abundance greater than 100%, so there seems to be an error in the given masses or the average molar mass of silver.

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The mole fraction of oxygen gas is 0.290

First we will calculate the total pressure by adding the partial pressure of all gases as follows:

Partial pressure of CH₄= 143 mmHg

Partial pressure of N₂= 469mmHg

Partial pressure of O= 251mmHg

Total pressure = partial pressure of CH₄+ partial pressure of N₂+ partial          pressure of O₂

Total pressure= 143+ 469+ 251

                        =863mmHg

Finally we will calculate the mole fraction of O₂ with the help of formula written below:

Mole fraction=\(\frac{partial pressure }{total pressure}\)

Mole fraction of O₂=\(\frac{251}{863}\)

Mole fraction of O₂= 0.290

Therefor answer will be 0.290

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Answer:

Sodium chloride

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During the polymerization of styrene to form polystyrene, the bonding and hybridization of the carbon atoms undergo significant changes.

In styrene, the carbon atoms are originally sp2 hybridized and form a conjugated system of double bonds in the aromatic ring. However, during the polymerization process, the double bonds in styrene undergo addition polymerization.As a result, the carbon atoms in polystyrene undergo a transformation in hybridization from sp2 to sp3. The double bonds break, and new sigma bonds are formed between the carbon atoms, leading to the formation of a long chain of repeating units.

This change in hybridization allows the carbon atoms in polystyrene to form stronger and more stable sigma bonds with neighboring carbon atoms or other substituents. Consequently, the structure of polystyrene becomes a three-dimensional network of carbon-carbon bonds throughout the polymer chainThe transition from an aromatic, conjugated system in styrene to a saturated, three-dimensional polymer structure in polystyrene is vital in the polymerization process, providing the desired properties and structural integrity to the resulting polymer.

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