A chemist combines 6. 2 ml of 3. 0 m hcl and 7. 8 ml of 3. 0 m naoh. Is the resulting solution acidic, basic, or neutral?.

Answer:

1.41 x 10 ^4

Explanation:

change atoms to mol then to gram

5 x 10^25 atoms of AgNO3 \(\frac{1mol AgNO3}{6.023 x 10 ^23}\)\(\frac{169.91g}{1mol AgNO3}\)

= 141.05g x 10^2 move the decimal over if you are doing sig fig 1.41 x 10^4

change atoms to mol using Avogadro's number 6.023 x 10^23 then mol to gram using the molar mass of AgNO3.

Explanation:

mole of acid/mole of base=(concentration of acid×volume of acid)/(concentration of base×volume of base)

Na/Nb=CaVa/CbVb

1/2=(Ca×16.7)/(0.2×25)

0.2×25=2×Ca×16.7

Ca=(0.2×25)/(2×16.7)

Ca=0.15mol/dm³

mole of acid=Concentration×volume

mole of acid=0.15×(16.7/1000)

mole of acid=2.5×10^-3moles

The answer is the concentration of H₂SO₄ = 0.25 mol/L or 0.25 M.

A neutralization reaction is when an acid and a base react to form water and a salt and involves the combination of H+ ions and OH- ions to generate water.

The neutralization of a strong acid and strong base has a pH equal to 7.

The neutralization of a strong acid and weak base will have a pH of less than 7, and conversely, the resulting pH when a strong base neutralizes a weak acid will be greater than 7.

When a solution is neutralized, it means that salts are formed from equal weights of acid and base

H₂SO₄(l) + 2NaOH(l) - - - > Na₂SO₄(aq) + 2H₂O((l)

From the Equation

Mole ratio of H₂SO₄ and NaOH = 1 : 2

Molarity of Sodium Hydroxide = 0.200mol/dm3

Molarity = moles of solute/litre of solution

moles of solute = 0.200 * 25 *10⁻³

moles of  NaOH = 5 *10⁻³ moles

As Mole ratio of H₂SO₄ and NaOH = 1 : 2

moles of H₂SO₄ = 2.5 *10⁻³

So, the concentration of H₂SO₄ = 0.25 mol/L or 0.25 M.

To know more about Neutralization reaction

https://brainly.com/question/20038776

#SPJ2

Lactase lowers the activation energy needed to begin breaking down lactose and is the role it plays in the reaction which is therefore denoted as option B.

This is referred to as a biological catalyst which increases the rate of a chemical reaction and is usually specific in nature. Examples include lactase,amylase which have substrates such as lactose and starch respectively.

Lactase which is an enzyme is involved in the breaking apart of the disaccharide known as lactose by lowering the activation energy thereby increasing the rate of the reaction and ensuring that is easily done.

Read more about Enzyme here https://brainly.com/question/14577353

#SPJ1

Answer:

The actual reason that the application of salt causes ice to melt is that a solution of water and dissolved salt has a lower freezing point than pure water. When added to ice, salt first dissolves in the film of liquid water that is always present on the surface, thereby lowering its freezing point below the ices temperature. Ice in contact with salty water therefore melts, creating more liquid water, which dissolves more salt, thereby causing more ice to melt, and so on.

Explanation:

The question had been explained.

The egg would be found to float on the sea water which is denser but would tend to sink in the fresh water which is less dense.

The term salinity has to do with the amount of salt that is present. A solution is very saline if there is a high concentration of salt in the solution. We know that sea water has a greater density than water. The reason why the density of the sea water is greater than the density of the pure water is that the sea water contains dissolved salts.

Now, we know that given the fact that the sea water is denser than the fresh water, it is easier for an object to sink in the fresh water than it does in the sea water which is denser. This is even observed in ships as there is a greater tendency to remain afloat in sea water than in salt water.

Learn more about density:https://brainly.com/question/15164682

#SPJ1

Answer:

When water temperature increases (right), the rate of evaporation also increases. In turn, the amount of water vapor in the "air space" above the water increases. ... But, with increased evaporation, more water molecules exist in the air above the water, which in turn increases the condensation rate.

Answer:

hope this helps have a amazing day! :)

Explanation:

Metals are an excellent conductor of electricity and heat because the atoms in the metals form a matrix through which outer electrons can move freely. Instead of orbiting their respective atoms, they form a sea of electrons that surround the positive nuclei of the interacting metal ions.

The molarity of the base used in the experiment, which was determined based on the recovered NaCl and the volumes of hydrochloric acid and sodium hydroxide, was approximately 1.15 M.

To determine the molarity of the base used in the experiment, we need to use the stoichiometry of the balanced chemical equation and the given data.

The balanced chemical equation for the reaction between hydrochloric acid (HCl) and sodium hydroxide (NaOH) is:

HCl + NaOH → NaCl + H2O

First, we need to find the number of moles of NaCl produced. We can do this by using the given mass of NaCl (2.22 g) and its molar mass (58.44 g/mol):

moles of NaCl = mass of NaCl / molar mass of NaCl

moles of NaCl = 2.22 g / 58.44 g/mol

moles of NaCl = 0.038 moles

Next, we can use the stoichiometry of the balanced equation to determine the number of moles of NaOH that reacted. Since the mole ratio between NaCl and NaOH is 1:1, the number of moles of NaOH is also 0.038 moles.

Now, we can calculate the molarity of the base (sodium hydroxide) using the given volume of sodium hydroxide solution (0.033 L):

Molarity of NaOH = moles of NaOH / volume of NaOH solution

Molarity of NaOH = 0.038 moles / 0.033 L

Molarity of NaOH ≈ 1.15 M

Therefore, the molarity of the base used in the experiment is approximately 1.15 M.

For more such question on experiment. visit :

https://brainly.com/question/20639065

#SPJ8

Metal atoms form metallic connections. Ionic bonds link metals to non-metals, whereas metallic bonds link a large number of metal atoms.

What distinctions may be made between metals and nonmetals?

The major distinction between metals and non-metals is that metals are frequently hard and effective heat- and electricity-conductors. Non-metals, however, are brittle and inadequate heat and electrical conductors.

While non-metals take electrons to produce anions, metals lose electrons and form cations. These ions' electrical attraction to one another causes them to form extraordinarily potent ionic connections. As a result, an ionic bond exists between a metal and a nonmetal.

To learn more about Ionic bonds :

https://brainly.com/question/977324

#SPJ4

The strongest type of intermolecular force between solute and solvent in the solution of CH\(_{3}\)Cl (g) in CH\(_{3}\)OCH\(_{3}\) (g) is dipole-dipole interaction.

In  CH\(_{3}\)Cl, the molecule has a polar covalent bond between carbon and chlorine atoms. Chlorine is more electronegative than carbon, resulting in a partial negative charge on chlorine and a partial positive charge on carbon. In  CH\(_{3}\)OCH\(_{3}\) , the molecule is also polar due to the oxygen atom's higher electronegativity compared to carbon and hydrogen. This creates a dipole moment in both molecules.

In the solution, the positive end of the  CH\(_{3}\)Cl molecule interacts with the negative end of the  CH\(_{3}\)OCH\(_{3}\) molecule, forming dipole-dipole interactions. These intermolecular forces are stronger than London dispersion forces, which are present in all molecules but are typically weaker. Therefore, the strongest intermolecular force in this solution is dipole-dipole interaction.

You can learn more about dipole-dipole interaction at

https://brainly.com/question/30437731

#SPJ11

True. Thermal energy, which is quantified as heat, is the movement of particles inside a material. Particles exchange energy in the form of heat as they travel more quickly or collide with one another.

Hence, thermal energy may be produced by the movement of particles.

The movement of particles within a material results in the production of thermal energy, often known as heat energy. Kinetic energy, which occurs when particles travel more quickly, or potential energy, which occurs when particles vibrate more quickly, might cause this movement. As particles contact, heat is transferred from one particle to the next, and this energy transfer lasts until the substance reaches thermal equilibrium. The temperature and quantity of heat energy within the material increase with particle mobility. Understanding this concept is crucial for comprehending a variety of phenomena, such as heat transport, thermodynamics, and the behaviour of matter in different states.

learn more about  Thermal energy here:

https://brainly.com/question/18989562

#SPJ4

Answer:

14cm

Explanation:

s x s=area

s²=200cm²

s=14.1421356237cm

s=14cm

Answer:

90.  

Explanation: yea and I will be back at your

Answer:

horizontal

Explanation:

To determine the nontrivial FD's and nontrivial MVD's in s(a, c, e) upon projecting relation r of problem 3 onto it, the main answer will be as follows:

Given: Relation r of problem 3:(a, b, c, d, e, f)ABCD → EFDE → AFD → C Nontrivial FD's and MVD's in s:(a, c, e)

Let's consider the projections of each of the FD's and MVD's present in the relation r of problem 3 onto the relation s(a, c, e).FD: A → E

Upon projecting FD A → E of relation r onto s(a, c, e), we get the following FD in s:(a) → (e)FD: E → A

Upon projecting FD E → A of relation r onto s(a, c, e), we get the following FD in s:(e) → (a)FD: C → Null

Upon projecting FD C → Null of relation r onto s(a, c, e), we get the following FD in s:(c) → NullMVD: AB → CDMVD AB → CD of relation r can be represented as follows:AB → C and AB → D

Upon projecting this MVD of relation r onto s(a, c, e), we get the following MVD in s:(a, b) → c and (a, b) → d

Thus, the nontrivial FD's and MVD's that hold in s(a, c, e) upon projecting relation r of problem 3 onto it are:(a) → (e)(e) → (a)(c) → Null(a, b) → c and (a, b) → d.

to know more about nontrivial FD's visit:

brainly.com/question/32261943

#SPJ11

Answer:

-415.5°F (-248.6°C)

Explanation:

Answer: The melting point/condensation point of neon is 24.53888889. Of course, I'm sure you can round that. The freezing point would be 521.74. All of this is in Kelvin

Answer: 2.9

Explanation:

Molar mass of Cu(NO3)2 = 187.5 g/mol

Molar mass of water = 18.0 g/mol

%H2O = (5.0 g - 3.9 g) / 5.0 g X 100 (100 is to get percent) = (1.1 g) / 5.0 g X 100

= 22.0 %

% H2O = ( mass of H20 alone) / (mass of total hydrate)

0.22 = 18.0n / (18.0n + 187.5)

n = 2.9 = (about) 3

When a 5.0g sample of Cu(NO₃)₂ . nH₂O is heated, and 3.9g of the anhydrous salt remains. The value of n is 3.

Water mass = Hydrate mass - Anhydrous mass

                    = 5.0 - 3.9

                    = 1.1 g water

Number of moles = \(\frac{\text{Given mass}}{\text{Molar mass}}\)

Now find the moles of H₂O and moles of Cu(NO₃)₂.

Moles of H₂O = \(\frac{\text{Mass of water}}{\text{Molar mass of water}}\)

                       =  \(\frac{1.1\ g}{18\ g/mol}\)

                       = 0.061 moles

Moles of Cu(NO₃)₂ = \(\frac{\text{Mass of}\ Cu(NO_{3})_{2}}{\text{Molar mass of}\ Cu(NO_{3})_{2}}\)

                               = \(\frac{3.9\ g}{187.5\ g/mol}\)

                               = 0.0208 moles

Ratio of moles of H₂O and moles of Cu(NO₃)₂.

= \(\frac{0.061}{0.0208}\)

= 2.9

≈ 3

The value of n is 3. So the formula will be Cu(NO₃)₂ . 3H₂O.

Thus, from above conclusion we can say that when a 5.0g sample of Cu(NO₃)₂ . nH₂O is heated, and 3.9 g of the anhydrous salt remains. The value of n is 3.

Lean more about the Number of moles here: https://brainly.com/question/15356425

#SPJ2

josh has 10 g of element a and 10 g or element b. when finished with the experiment, josh has 20 g of element a and b combined. This demonstrates ' Law of conservation of mass'.

In a closed system, mass cannot be created or destroyed, but it can be changed from one form to another. Thus, mass of a system remains same before and after the reaction.

To know more about 'Law of conservation of mass', click here,

brainly.com/question/24783543

#SPJ4

Answer:

Beryllium

Explanation:

They are in the same group

The volume of oxygen gas produced at STP when 3.81 g of Mg(ClO₃)₂ decomposes is 0.511 L.

When magnesium chlorate (Mg(ClO₃)₂) is decomposed, oxygen gas and magnesium chloride are produced. To find the volume of oxygen gas at STP when 3.81 g of Mg(ClO₃)₂ decomposes, follow these steps:

1. Write the balanced chemical equation for the decomposition of magnesium chlorate:
  Mg(ClO₃)₂ (s) → 2ClO₂ (g) + MgCl₂ (s)

2. Calculate the molar mass of Mg(ClO₃)₂:
  Mg: 24.31 g/mol
  Cl: 35.45 g/mol (2 Cl atoms)
  O: 16.00 g/mol (6 O atoms)
  Total: 24.31 + (2 x 35.45) + (6 x 16.00) = 167.21 g/mol

3. Determine the moles of Mg(ClO₃)₂:
  Moles = (mass of Mg(ClO₃)₂) / (molar mass of Mg(ClO₃)₂)
  Moles = 3.81 g / 167.21 g/mol ≈ 0.0228 mol

4. Use the balanced equation to find the moles of oxygen gas produced:
  From the equation, 1 mol of Mg(ClO₃)₂ produces 1 mol of O₂. Therefore, 0.0228 mol of Mg(ClO₃)₂ will produce 0.0228 mol of O₂.

5. Use the molar volume of a gas at STP (22.4 L/mol) to find the volume of O₂ produced:
  Volume of O₂ = (moles of O₂) x (molar volume at STP)
  Volume of O₂ = 0.0228 mol x 22.4 L/mol ≈ 0.511 L

To know more about volume of oxygen gas at STP :

https://brainly.com/question/21360097

#SPJ11

According to the information provided, ammonium chloride salt produces an acidic solution when dissolved in water.

Ammonium nitrate is used by animal farmers for fertilising pasture and hay since urea-based fertilisers have a tendency to volatilize first from soil before the plants can utilise them. Additionally, it is very soluble, making it a good choice for irrigation systems.

Ammonium nitrate is safe to handle under typical circumstances. However, breathing in large amounts or ammonium nitrate powder might irritate the respiratory system. Coughing, sore throats, breathing difficulties, and even suffocation are examples of symptoms.

To know more about ammonium nitrate visit:

https://brainly.com/question/13005973

#SPJ4

Answer: False

Explanation:

An acid is defined as the substance which looses hydrogen ion or hydronium ions when dissolved in water.

A base is defined as the substance which looses hydroxide ions when dissolved in water.

If the solution has higher hydronium ion concentration as compared to the hydroxide ion concentration, then the pH will be low and the solution will be acidic.

If the solution has low hydronium ion concentration as compared to the hydroxide ion concentration then the pH will be high and the solution will be basic.

n analysis, an equilibrium mixture for the reaction 2h2s(g) 2h2(g) s2(g) was found to contain 1.0 mol h2s, 4.0 mol h2, and 0.80 mol s2 in a 4.0 l vessel he equilibrium constant, kc, for this reaction is 3.2

2H2S(g) ---> 2H2(g) + S2(g), Kc = [H2]2[S2]/[H2S]2 ,[H2] = 4.0 mol / 4.0 L = 1.0 M,[S2] = 0.80 mol / 4.0 L = 0.2 M, [H2S] = 1.0 mol / 4.0 L = 0.25 M.Kc = 1.02 x 0.2 / 0.252 = 3.2. A chemical reaction's equilibrium constant is indeed the value of the its reflex quotient at chemical equilibrium, a state achieved by a dynamic chemical equilibrium after a sufficient amount of time has passed in which its structure has no measurable tendency to change further. For a chemical process, the equilibrium constant can be described as the ratio of reactant to product that is used to ascertain chemical behaviour. At equilibrium, the forward reaction rate equals the backward rate of the reaction. Equilibrium contains a root from of the Latin libra, meaning "mass" or "balance". Libra is commonly depicted as a set of stability scales, often kept by the bound and gagged goddess of justice, to represent fairness, equality, and justice as a constellation, astrology symbol, and astrological sign.

Learn more about equilibrium constant here:

https://brainly.com/question/15118952

#SPJ4

Answer:

hsbdgjvejsnshns gzjs svshs

Density is an intensive property as it does not depend on the quantity of the substances Whereas mass and volume are extensive property. Therefore, in the below given ways we can find density with radius, height, and mass.

Density tells about the compactness of the substances, how much dense is the substances in other words. Object that is more denser than water they just sink in the water.

Mathematically,

Density = Mass of the metal ball ÷volume marked on the graduated cylinder

In case of Sphere, density can be given as

Volume of sphere = (4/3) π R³

R= radius of the sphere.

In case of Cylinder, density can be given as

V = π R²L

R =radius of its base

L =length of base

Therefore, in the above given ways we can find density with radius, height, and mass.

To know more about density, here:

https://brainly.com/question/16894337

#SPJ2

Answer:

Below:

Explanation:

To calculate an energy change for a reaction: add together the bond energies for all the bonds in the reactants - this is the 'energy in' add together the bond energies for all the bonds in the products - this is the 'energy out.

Hope it helps....

It's Muska