The beginning of modern science in the 1500s in Europe is
called the scientific
Enter the answer
Check it

The concentration of Sr2+ in the final solution is 7.9 x 10^-7 M.

To calculate the concentration of Sr2+ in the final solution, we need to use the equation:

Ksp = [Sr2+][F-]2

We can assume that all the F- ions come from the NaF solution, so we can calculate the initial concentration of F-:

0.080 M x 0.090 L = 0.0072 moles F-

Since we are adding volumes of solutions together, we can calculate the total volume of the final solution:

90 mL + 30 mL = 120 mL = 0.120 L

Next, we can calculate the moles of Sr2+ in the 30 mL of 0.20 M Sr(NO3)2 solution:

0.20 M x 0.030 L = 0.006 moles Sr2+

Now, we can use the Ksp equation to find the concentration of Sr2+ in the final solution:

Ksp = [Sr2+][F-]2

(Since we know the concentration of F-, we only need to solve for [Sr2+])

Ksp = [Sr2+](0.0072 M)2

4.0 x 10^-10 = [Sr2+](0.0072 M)2

[Sr2+] = 7.9 x 10^-7 M

Therefore, the concentration of Sr2+ in the final solution is 7.9 x 10^-7 M.

To know more about concentration click here:

https://brainly.com/question/10725862

#SPJ11

The ratio of magnesium to bromine in the compound will be 1:2 that is option D obtained by the electronic configuration.

The arrangement of electrons in an atom, molecule, or other physical structure is referred to as its electron configuration; for instance, the electron configuration of the neon atom is 1s2 2s2 2p6.

One orbital can accommodate a maximum of two electrons and comes in four different shapes: s, p, d, and f. Because they contain various sublevels, the p, d, and f orbitals may each hold more electrons. As previously mentioned, the electron configuration of each element depends on where it sits in the periodic table.

To know more about configuration visit :-

https://brainly.com/question/29757010

#SPJ1

The best way to take advantage of Catholic Schools Week is to volunteer and get involved in community events.

Catholic Schools Week is an annual celebration of Catholic education, typically held in the United States during the last week of January. To take advantage of this week, you can participate in the events and activities organized by your local Catholic school or parish.

Volunteer at your local Catholic school to help with events, projects, or activities. You can also offer to mentor students or assist teachers. Catholic Schools Week often includes events like open houses, talent shows, and sports games.

Find out more on Catholic Schools at https://brainly.com/question/16953262

#SPJ1

The types of the nonequivalent protons are present in each of the molecules is :

a) 4

b) 4

c) 2

The proton that is having the different environment and all the protons will give the different peaks is the non equivalent proton and if the proton will shares the same environment and all the protons will gave the same singles or the  peaks called as the  the equivalent protons.

a) 6 H will produce the same 1 signal and the 2 carbon and the 4 hydrogen will produce the 1 signal and same as the 3 carbon and the 4 hydrogen will produce the 1 signal and last 4 carbon will produce 1 signal.

b) The compound also contains the 4 non equivalent proton .

c)  The 1 signal and 1 equivalent proton and 2 will produce 1 signal so. The total 2 non equivalent proton.

To learn more about non equivalent proton here

https://brainly.com/question/30255368

#SPJ4

The solubility product constant is ksp = 2725.47 * 10⁻¹²

The dissociation reaction of SrF2 is given below:

SrF2 ----------------> Sr⁺² + 2F⁻

Let us make an ICE table for the reactant and product side:

I         1                  0               0

C       -s                 s                2s

E        1 - s             s                2s

where,

I denote initial.

C denotes change.

E denotes equilibrium.

ksp is called the solubility product constant.

It is the equilibrium constant for the dissolution of solid substances into an aqueous solution.

A solubility product is the product of the concentration of ions that are present in a saturated solution of an ionic compound.

The ksp can be calculated as follows:

ksp = [ Sr⁺²] * [2F⁻]^2

     =  (s) * (2s)^2

where s is the solubility.

m = 0.011 g

n = 0.011 / 125.62

where n is the number of moles.

molar mass of SrF2 = 125.62 g / mol

n = 8.8 * 10⁻⁵

This is for one mole.

For 2 moles it will be

2s = 17.6 * 10⁻⁵ / 0.1 mol / L

 = 17.6 * 10⁻⁴ mol / L

100 ml = 100 * 10⁻³ = 0.1 L

Therefore,

s = 8.8 * 10⁻⁵ / 0.1

 = 8.8 * 10⁻⁴ mol / L

ksp = (8.8 * 10⁻⁴ ) * (17.6 *10⁻⁴ )^2

ksp = 2725.47 * 10⁻¹²

The solubility product constant is ksp = 2725.47 *10⁻¹²

For more information on Solubility constant click on the link below:

brainly.com/question/1419865

# SPJ4

Answer: During succession, new species move into an area and colonize it.

Explanation: Ecological succession refers to the process of change in the composition and structure of an ecosystem over time. It occurs due to the interactions between the biotic (living) and abiotic (non-living) components of an environment. As succession progresses, new species gradually establish and thrive in the area, leading to a change in the species composition. This process can occur over a long period of time, ranging from decades to centuries, depending on various factors such as environmental conditions and the specific type of succession.

Answer:

Explanation:

The sketch of the curve for two Br atoms can be seen in the image attached below. From the image below, we can deduce the following:

On the periodic table, the Bromine (Br) atom is the fourth member in the halogen family group. The atomic size increases from top to bottom down the group, thus Br atom posses a larger atomic size than Cl atom. As a result of that, the bond length formation between the two Br atoms will be larger compared to that of the two Cl atoms.

Answer:

72.0366 gramos de Al

Explanation:

2.67 moles Al* 26.98 gramos Al/ 1 mol Al= 72.0366 gramos de Al

The atomic number of an atom that has six protons, six neutrons, and six electrons is 6. And the element is carbon.

Carbon is known as a tetravalent compound.

It has four electrons in its outermost shell. It forms a covalent bond with other compounds.

The number of neutrons. = 6

Number of electrons = 6

Number of protons = 6

So the atomic number of the compound is,

The atomic number of an element = Number of protons present in its nucleus

The number of protons given in the compound is 6.

So the atomic number of the compound is also 6.

Carbon has six atomic numbers.

Therefore, the atomic number of an atom that has six protons, six neutrons, and six electrons is 6. And the element is carbon.

To know more about electrons, refer to the below link:

https://brainly.com/question/1255220

#SPJ4

The pH of the buffer solution before adding NaOH is approximately 3.77. After adding 50.0 mL of 1.00 M NaOH solution, the pH of the buffer solution will increase.

To calculate the pH of the buffer solution, we need to consider the dissociation of formic acid (HCOOH) and the reaction with sodium formate (HCOONa). Formic acid acts as a weak acid, and sodium formate acts as its conjugate base.

Using the Henderson-Hasselbalch equation, pH = pKa + log([A-]/[HA]), where pKa is the logarithmic form of the acid dissociation constant, [A-] is the concentration of the conjugate base, and [HA] is the concentration of the weak acid.

In this case, the pKa of formic acid (HCOOH) is determined by its acid dissociation constant, K = 1.77 × 10⁻⁷. Thus, pKa = -log(K) = -log(1.77 × 10⁻⁷) = 6.75.

Before adding NaOH, the concentration of formic acid ([HA]) and sodium formate ([A-]) in the buffer solution is both 0.500 M.

Using the Henderson-Hasselbalch equation, pH = 6.75 + log(0.500/0.500) = 3.77.

When 50.0 mL of 1.00 M NaOH is added, it reacts with formic acid to form sodium formate and water. The balanced equation for this reaction is: HCOOH + NaOH → HCOONa + H₂O.

Since NaOH is a strong base, it completely dissociates, providing OH- ions that react with HCOOH. The stoichiometry of the reaction shows that for every mole of NaOH, one mole of HCOOH is neutralized.

The 50.0 mL of 1.00 M NaOH solution is equivalent to 0.0500 moles of NaOH. Thus, 0.0500 moles of HCOOH will be neutralized.

In the buffer solution, the initial concentration of formic acid ([HA]) is 0.500 M. After neutralization, the concentration of formic acid becomes 0.500 - 0.0500 M = 0.450 M.

The concentration of sodium formate ([A-]) remains the same at 0.500 M.

Using the Henderson-Hasselbalch equation again, pH = 6.75 + log(0.500/0.450) ≈ 3.90.

Therefore, after adding 50.0 mL of 1.00 M NaOH solution, the pH of the buffer solution increases to approximately 3.90.

To know more about neutralization, refer here:

https://brainly.com/question/14156911#

#SPJ4

Nitric acid weighs 15.0 g, and 31.0 g of magnesium carbonate is mixed with it to create 31.0 g of \(Mg(No_3)_2\).Nitric acid is present in excess.

The chemical element magnesium has the atomic number 12 and the letter Mg as its symbol. It is a highly reactive, silvery-white metal that plays a significant role in the composition of the Earth's crust. Magnesium is the eighth most common element in the crust of the Earth and the ninth most common element in the cosmos.

It makes up a significant portion of the Earth's mantle and is a crucial component of numerous minerals, such as dolomite, talc, and chlorite. Magnesium is necessary for life since it is involved in numerous vital biological processes, such as protein synthesis, DNA replication, and energy consumption.  

To learn more about magnesium, visit:

brainly.com/question/30333465

#SPJ1

In the above intermediate chemical equation, oxygen will appear as follows: O₂(g) as a reactant (option B).

A chemical equation in chemistry is a symbolic representation of a chemical reaction where reactants are represented on the left, and products on the right.

According to this question, an intermediate chemical equation is presented as follows:

As observed in the above chemical equation, oxygen will react in its gaseous form i.e. as a reactant.

Learn more about chemical equation at: https://brainly.com/question/28294176

#SPJ1

The question which is most useful for determining the name of the acid HNO₃ is "Does the acid formula contain hydrogen?"

Thus, option D is correct.

Nitric acid, HNO₃ , is a kind οf acid. In water, it separates intο nitrate iοns (NO₃ -) and hydrοgen iοns (H+). Any substance that releases H+ in an aqueοus sοlutiοn is an acid, accοrding tο the definitiοn. Nitric acid falls within the categοry οf an acid because οf this.

Befοre and after the reactiοn, cοunt the hydrοgen atοms οn each cοmpοnent tο determine if it is an acid οr a basic. The acid is the substance if the number has drοpped. If there are mοre hydrοgens nοw, the substance is the base.

To know more about acid visit:-

brainly.com/question/29769012

#SPJ1

The elements Bromine(Br) and Sulphur(S) undergo changes in oxidation number in the given reaction.

Given reaction:

\(2H_2SO_4(aq) + 2NaBr(s) - > Br_2(l) + SO_2(g) + Na_2SO_4(aq) + 2H_2O(l)\)

The elements that undergo changes in oxidation number are:

Bromine (Br):

In NaBr, the oxidation number of Br is -1.

In \(Br_2\), the oxidation number of Br is 0.

Sulfur (S):  

In \(H_2SO_4\), the oxidation number of S is +6.

In \(SO_2\), the oxidation number of S is +4.

All other elements in the reaction (H, O, Na) maintain a consistent oxidation number throughout the reaction.

To know more about oxidation number, refer here:

https://brainly.com/question/29100691

#SPJ4

Answer:

Crystal

Explanation:

Cause it is made of crystal

Answer: Network solid or network covalent solid

Explanation:

Answer:

Water is a remarkable substance, and its unique properties are largely due to the presence of polar covalent bonds and hydrogen bonds in its structure. These characteristics play a crucial role in the physical and chemical properties of water, making it essential for life as we know it.

Explanation:

The polar covalent bonds in water arise from the unequal sharing of electrons between oxygen and hydrogen atoms. This results in the oxygen atom having a partial negative charge (δ-) and the hydrogen atoms having partial positive charges (δ+). These charges create polarity within the water molecule, leading to the formation of hydrogen bonds.

Hydrogen bonds occur when the partially positive hydrogen atom of one water molecule is attracted to the partially negative oxygen atom of another water molecule. These hydrogen bonds are relatively weak individually, but when present in large numbers, they contribute to the cohesion, surface tension, and high boiling point of water.

The importance of these bonds is manifold. The cohesion between water molecules due to hydrogen bonding enables water to form droplets, have a high surface tension, and flow freely, facilitating transport within organisms and in the environment. Additionally, hydrogen bonding leads to the high specific heat capacity and heat of vaporization of water, making it an effective regulator of temperature in living organisms and ensuring stable environmental conditions.

Furthermore, hydrogen bonds play a crucial role in the unique properties of water as a solvent. The polar nature of water allows it to dissolve a wide range of substances, including ionic compounds and polar molecules, facilitating various biological processes such as nutrient transport and chemical reactions in cells.

Answer:

2=2.28*10^5

3=3.98*10^3

4=5.76*10^3

Answer:

C- The core is made up of dense elements, such as iron and nickel.

Metallic elements exist in a solid-state and they are opaque, have a shiny surface, good conductors of electricity and heat, malleable and ductile, and are dense. The structure of metals is formed by atoms that are held together by metallic bonds. These atoms have loosely bound valence electrons that can be shared between the neighboring atoms.

For such more question on valence electrons

https://brainly.com/question/371590

#SPJ8

Answer:

A) 2SO2 + O2 = 2SO3

B) Al2O3 + O2 = Al2O3

C) Ca + O2 = CaO2

D) Na (s) + Cl2 (g) = NaCl (s)

E) K + O2 = K2O2

brainliest please

The given reaction is already balanced, that is to say tha the number of atoms in the reactants matches the number of atoms in the products. In the reaction, we can see the relationship between CaC2 and H2O. For each mole of CaC2 two moles of H2O react.

So, if 4.8 moles of CaC2 are consumed the moles of H2O needed will be:

Mol of H2O = Mol of CaC2 x 2

Mol of H2O = 4.8 x 2 = 9.6 mol of H2O

Now, to calculate the grams of H2O we will use the following equation and the mass molar of H2O.

Mass molar of H2O =18.01 g/mol

So, if 4.8 moles of CaC2 are consumed in this reaction, 172.9 g of H2O are needed

A battery is a device that converts chemical energy into electrical energy through a process known as an electrochemical reaction.

When a battery is connected to a circuit, the electrochemical reaction causes a flow of electrons from the anode to the cathode, generating an electric current that can power a device.

The metal chosen for the anode must be capable of losing electrons easily, while the metal chosen for the cathode must be capable of accepting electrons. The choice of metals can also affect the voltage and capacity of the battery, as well as its overall efficiency.

In general, the metals used in a battery should have a large difference in their electronegativity values, which determines how easily an atom can attract electrons. Common metals used in batteries include zinc, lithium, nickel, and cadmium.

Find out more on batteries at https://brainly.com/question/16553902

#SPJ1

The entropy change for the system when the reaction below proceeds from reactants to products is Be(OH)₂ ⇒ BeO + H₂O is positive and feasibility.

The quantity of thermal energy per unit of temperature in a system that cannot be utilised for productive work is measured as entropy. Because work is created by structured molecular motion, entropy is a measure of a system's molecular disorder or unpredictability. For many everyday events, entropy theory provides a comprehensive insight of the direction of spontaneous change.

Entropy offers a mathematical approach to express the intuitive understanding of which operations are impractical even if they wouldn't go against the fundamental principle of energy conservation. For instance, a block of ice put on a hot stove would undoubtedly melt as the burner cools. Since no small change will cause the melted water to turn back into ice as the stove heats up, this process is known as irreversible. In contrast, if a tiny quantity of heat is introduced to the system or removed from it, a block of ice placed in an ice-water bath will either melt or freeze a little bit more.

Learn more about Entropy:

https://brainly.com/question/30481619

#SPJ4

Answer:

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question

3000 g = 3 kg

We have

net force = 3 × 5 = 15

We have the final answer as

Hope this helps you

Yeast is a type of fungus that can ferment certain substances, meaning it breaks down sugars and converts them into alcohol and carbon dioxide. The ease with which a substance is fermented by yeast depends on a few factors, including the type of yeast being used and the composition of the substance itself.

Generally speaking, substances that contain a high amount of simple sugars are more easily fermented by yeast. This is because yeast is able to quickly and efficiently break down these sugars into alcohol and carbon dioxide. Examples of substances that are easily fermented by yeast include fruit juices, honey, and molasses.

On the other hand, substances that are more complex or contain less sugar may be more difficult for yeast to ferment. For example, yeast may have a harder time breaking down starches, such as those found in grains, without additional processing steps.

It's worth noting that different strains of yeast may also have varying levels of ability to ferment certain substances. Some strains may be better suited for fermenting certain types of beer or wine, for example, while others may be more effective at fermenting bread dough.

Overall, the ease with which a substance is fermented by yeast depends on a variety of factors, and may require some trial and error to determine the best approach for a particular substance.

Learn more about simple sugars here:

brainly.com/question/984360

#SPJ11

Constitutional isomerism is a type of isomerism in which molecules have the same atoms, but the order in which the atoms are bonded is different. They can have the same molecular formula but different functional groups

The members of the following set of compounds are all alcohols:

2-Butanol

3-Methyl-1-pentanol

2-Methyl-2-butanol

Pentan-1-ol

2-Methyl-1-butanol

1-Pentanol

Therefore, we must recognize the structural formula that represents the same compound and the one that represents constitutional isomers of each other.The constitutional isomers are

2-Methyl-1-butanol, 3-Methyl-1-pentanol, and 2-Methyl-2-butanol.

The following two pairs of alcohols represent the same compound:

2-Butanol and Pentan-1-ol.

Their structural formulas contain five carbon atoms.

1-Pentanol and 3-Methyl-1-pentanol. They contain five carbon atoms and are primary alcohols as well.Each alcohol has its own unique structural formula that separates it from other compounds. Isomers are compounds that have the same chemical formula but differ in structure, and this includes constitutional isomers.Therefore, the structural formulas that represent the same compound are Pentan-1-ol and 2-Butanol. The structural formulas that represent constitutional isomers are 2-Methyl-1-butanol, 3-Methyl-1-pentanol, and 2-Methyl-2-butanol.

Constitutional isomers are compounds that have the same number and kind of atoms, but the atoms are connected differently.

To know more about constitutional isomers visit:

https://brainly.com/question/30556576

#SPJ11