help me, it’s pretty easy science moon stuff !

1. Ionic compounds are formed by the transfer of electrons that are positively and negatively charged, whereas, covalent compounds are formed by sharing the electrons. 2. In an ionic compound, bonding involves a metal and nonmetal, whereas, in the covalent compound, bonding is between nonmetals.

HCl will be the limiting reactant for the above question

When HCl and Ca(OH)2 are mixed, they react to form water and calcium chloride (CaCl2) according to the following equation: HCl(aq) + Ca(OH)2(aq) -> CaCl2(aq) + 2H2O(l). To determine which species is the limiting reactant, we need to compare the amount of HCl and Ca(OH)2 present in the reaction.The number of moles of HCl present in the reaction is given by the equation n=CV, where n is the number of moles, C is the concentration of the solution and V is the volume. Hence  number of HCL moles is:

n = 3.00 M 6.00L = 18.0 moles The number of moles of Ca(OH)2 present in the reaction is given by the equation n=CV, where n is the number of moles, C is the concentration of the solution and V is the volume. So the number of moles of Ca(OH)2 is: n = 2.00 M 5.00L = 10.0 moles. The number of moles of HCl is greater than the number of moles of Ca(OH)2, so HCl will be the limiting reactant.

Learn more about limiting reactant here:

https://brainly.com/question/14225536

#SPJ4

Atomic Number of the periodic table is needed to determine why KCl tastes like NaCl.

What is the Periodic Table?

The Periodic Table is a tabular arrangement of the chemical elements organized by atomic number, electron configuration, and recurring chemical properties. It is one of the most important tools in chemistry, providing a useful framework to classify, systematize, and predict the properties of elements.

Atomic numbers are used to identify each element in the periodic table, and they are also used to determine the number of protons in the nucleus of an atom. The number of protons in an atom determines its chemical properties, and the similarity in the number of protons between two elements can explain why they have similar properties. In this case, the similarity in the atomic number of potassium (K, atomic number 19) and sodium (Na, atomic number 11) explains why the salts of both elements, potassium chloride (KCl) and sodium chloride (NaCl), taste the same.

Hence, Option D is correct.

To know more about the Periodic Table,

https://brainly.com/question/15987580

#SPJ4

Answer:   Desarrollar y ceñirse a un horario diario puede ayudar a estabilizar los cambios de humor del trastorno bipolar. Incluya horarios establecidos para dormir, comer, socializar, hacer ejercicio, trabajar y relajarse. Trate de mantener un patrón regular de actividad incluso durante los altibajos emocionales.

Explanation:

To solve this we must be knowing each and every concept related to chemical Compound. Therefore, The other 2 points of the water  molecule are the paired two electrons from the oxygen atom and one electron from each H atom.

Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.

There are two types of chemical compound one is covalent compound and other is ionic compound, covalent compound formed by sharing of electron and ionic compound formed by complete transfer of electron. The other 2 points of the water  molecule are the paired two electrons from the oxygen atom and one electron from each H atom.

Therefore, The other 2 points of the water  molecule are the paired two electrons from the oxygen atom and one electron from each H atom.

To learn more about chemical compound, here:

brainly.com/question/26487468

#SPJ1

Fluorine as well as chlorine are among the substances in group 17. Alkali metals as well as hydrogen are both part of group 1 on the periodic table.

Group 1 elements were extremely reactive due to the fact that they only contain one valence electron. As just a result, atoms were only ever combined with some other elements present in nature.

Due to their size as well as low ionisation enthalpy, alkali metals were extremely reactive metals. Moving lower in the group causes them to become more reactive. Reactivity to air: These metals discolor when exposed to dry air because oxides create, which then react with moisture to generate hydroxides.

To know more about Reactivity

https://brainly.com/question/1598581

#SPJ4

The heat of vaporization for water is 40.7 kJ/mol. the heat energy must 150.0 g of water absorb to boil away completely is 6106 kJ.

The expression is given as :

q = m ΔH

where ,

q is heat energy

m is the mass

ΔH is the heat of the vaporization.

q = heat = ?

m = mass  = 150 g

ΔH = heat of vaporization = 40.7 kJ/mol

q = 150 × 40.7

q = 6106 kJ

Thus , if the heat of vaporization is 40.7 kJ/mol ,the heat energy required for 150 g of water absorb to boil away completely is 6106 kJ.

To learn more about heat vaporization here

https://brainly.com/question/24569455

#SPJ4

Answer:

molecular recognition based on structural complementarity

Explanation:

Enzymes work on the basis of a lock and key model. The substrates on which enzymes act are specifically tailored to suit the shape of the enzyme.

As such, the enzyme just fits into the substrate in the same way as the right key fits into a lock.

Hence, molecular recognition based on structural complementarity is the basis for the specificity of enzyme activity.

Answer:

Real gases particles are smaller than ideal gases

In 1897, J.J. Thomson's discovery of the electron was revolutionary.

Thomson's concept of the electron showed that the atom was not indivisible, but instead was composed of smaller particles. This discovery provided the first piece of evidence to support the atomic theory, which states that all matter is made up of atoms.

Thomson's concept of the electron also allowed scientists to understand the behaviour of electricity better. Electrons are negatively charged particles, and Thomson's discovery showed that electricity is a flow of electrons. This knowledge allowed scientists to create new technologies based on the understanding of electrons, such as computers and cell phones.

The significance of Thomson's concept of the electron can be summed up in three words: evidence, electricity, and technology. Thomson's discovery provided the first piece of evidence for the atomic theory, allowed for a better understanding of electricity, and paved the way for the creation of many new technologies.

To know more about thomson's concept click-https://brainly.com/question/1569426
#SPJ4

Answer: Uhmmmm what dude i dont know what to say how the heck so i solve this?

Explanation:

Answer:

this reaction is an oxidation reaction

The chemical reactions involving both oxidation and reduction are known as redox reactions. The oxidation involves the loss of electrons. The reaction of lead with oxygen is an example of oxidation reaction.

According to the classical concept, oxidation is defined as a process which involves the addition of oxygen or electronegative element or the removal of hydrogen or electropositive element.

During electron transfer, the species which loses electrons is said to be oxidized and the species which gains electrons is said to be reduced.

The lead (IV) oxide is the formula of PbO₂. Here the oxidation state of lead is +4. The lead (IV) oxide is used in manufacturing dyes and also used to make explosives. It is a corrosive outcome that can evolve in lead pipes that are used for drinking water.

The formation of lead (IV) oxide is given as:

Pb (s) + O₂ (g) → PbO₂ (g)

Thus the reaction is an oxidation reaction.

To know more about oxidation reaction, visit;

https://brainly.com/question/29218241

#SPJ2

Answer: Magnesium is being oxidized, and the chloride ion is being reduced. ... solutions of the reactants lead(II) nitrate and potassium iodide.

Explanation:

Answer:

C may be the correct answer

Answer:

When waves travel from one medium to another the frequency never changes. As waves travel into the denser medium, they slow down and wavelength decreases. Part of the wave travels faster for longer causing the wave to turn. The wave is slower but the wavelength is shorter meaning frequency remains the same.

A decrease in temperature could account for the weakening of hurricanes when they reach the Atlantic Ocean. hence option A is the correct answer.

There must be warm ocean water and wet, humid air in the area for one to form. When humid air flows upward at a low-pressure zone over warm ocean water, water is released from the air, resulting in storm clouds. The air in a hurricane rotates as it rises.

Hurricanes begin with the evaporation of warm seawater, which causes water to be pumped into the lower atmosphere. When converging winds collide and turn upwards, this humid air is pulled aloft.

Hurricanes arise when warm, moist air rises over sea. Cooler air replaces the rising air. Large clouds and thunderstorms continue to form as a result of this process. Because of the Coriolis Effect, these thunderstorms continue to expand and begin to rotate.

Learn more about Hurricane here:

https://brainly.com/question/18221136

#SPJ1

Making people aware of how terrible hunger and poverty are in contemporary society is the aim of A Modest Proposal.

These kinds of problems are still important in today's culture and are not only confined to Swift's day. Jonathan Swift wrote an article titled "A Modest Proposal" that discusses hunger and poverty. Swift created it in 1729 as a means of drawing attention to how terrible these issues were.Most likely, this idea did seem excessive to many of his contemporaries, especially if they failed to grasp the text's satirical and sarcastic tone. Swift is trying to make a point about how things between the rich English and the poor Irish have gotten out of hand.

To learn more about Swift's please click on below link

https://brainly.com/question/15272045

#SPJ4

ΔS∘ for Ti(s)+2Cl2(g)→TiCl4(g) is 659.6J/mol.. It is important to note that, as a general rule, a positive ΔS° indicates an increase in disorder and a negative ΔS° indicates a decrease in disorder.

The change in entropy (ΔS) for a chemical reaction can be calculated using the standard entropies (S°) of the reactants and products.

ΔS° = S°(products) - S°(reactants). For the reaction Ti(s) + 2Cl2(g) → TiCl4(g)S° of Ti(s) = 29.1 J/mol·K, S° of Cl2(g) = 223.1 J/mol·K, S° of TiCl4(g) = 167.4 J/mol·K. Therefore, ΔS° = (S°(TiCl4) + 2S°(Cl2)) - S°(Ti)ΔS° = (167.4 + 2*223.1) - 29.1 = 659.6 J/mol·K. So the ΔS∘ for Ti(s) + 2Cl2(g) → TiCl4(g) is 659.6 J/mol·K with four significant figures. It is important to note that, as a general rule, a positive ΔS° indicates an increase in disorder and a negative ΔS° indicates a decrease in disorder. So in this case, the process of going from solid titanium and gaseous chlorine to gaseous titanium tetrachloride increases disorder, which is consistent with a positive ΔS°.

To learn more about ΔS here:

https://brainly.com/question/3784176

#SPJ4

Diatomic elements are elements that exist as pairs of atoms. Unlike other elemental substances, diatomic elements cannot exist as single atoms, but must exist as a pair of atoms bound together.

Elemental refers to an element or substance made up of one kind of atom, such as oxygen, carbon, or hydrogen. Elements are the basic building blocks of matter, and they are combined in different ways to form the molecules of different materials. Elemental substances are the most basic form of matter, and they are essential for life on Earth. There are currently 118 known elements, and they are found in nature and in many products. Each element has unique properties, and they can be used in different ways. For example, oxygen is essential for human respiration, while carbon is found in many materials, such as plastics and diamonds.

Examples of diatomic elements include nitrogen (N2), oxygen (O2), hydrogen (H2), chlorine (Cl2), fluorine (F2), and bromine (Br2).

To learn more about elemental
https://brainly.com/question/18096867
#SPJ4

Answer:

Sources of air pollutants from the industry include: power generation plant, boilers, bleaching plants and caustic soda/chlorine plant. Pollutants include particulate matter, chlorine, sulfur dioxides, hydrogen sulfides, carbon dioxide, carbon monoxides and nitrous oxides.

Answer:

the answer is 2.75 but since that isn't an option I'd go with 1 because I just took a test with this question and it was the right answer.. hopefully that helps

The most electronegative atom is Flourine and the least is Hydrogen

The attached image indicates how the highly electronegative Fluorine atom takes away most of the electron density (red-to-blue colored cloud) from a hydrogen–fluoride covalent bond.

An electronegative atom is an atom that has a tendency to attract electrons towards itself when it is part of a chemical bond. The most common example is the oxygen atom. The ability of an atom to attract electrons is known as its electronegativity.

The higher the electronegativity of an atom, the more it will pull electrons towards itself. The electronegativity of an atom is determined by its atomic number and the number of electrons in its outermost shell.

Therefore, the correct answer is as given above

learn more about electronegative atom: https://brainly.com/question/24977425

#SPJ1

The prefixes you provided do not correspond to any known chemical element or compound. The prefixes used in chemistry typically come from Greek or Latin and indicate the number of atoms present in a molecule of a certain element or compound.

For example, "mono-" indicates 1 atom, "di-" indicates 2 atoms, "tri-" indicates 3 atoms, "tetra-" indicates 4 atoms, and so on. prefixes let me know if you have any other question

Mono - 1 - montui, chloride

di - 2 atoms - donde

tri - 3 atoms - triponthou

tetra - 4 atoms - tetrisdide

utra - 5 atoms - utracondo are prefixes .

Learn more about prefixes here:

https://brainly.com/question/13679502

#SPJ4

The price of the wax from the U.S. supplier in €/kg would be: €25.53 / 2.20 lb = €11.67/kg.

The price of the wax from the German supplier in $/lb would be $11.90 / 0.76 = $15.68/lb.

This price is calculated by taking the cost of the wax in US dollars and converting it to Euros using the current exchange rate of $1 = €0.76.

This price is calculated by taking the cost of the wax in Euros and converting it to US dollars using the current exchange rate of $1 = €0.76. It's important to note that the price of the wax from the German supplier is higher than the price from the US supplier when converted to dollars per pound.

This is because the price per kg is lower but the conversion to pound makes it higher.

The price of the wax from the U.S. supplier in €/kg would be: €25.53 / 2.20 lb = €11.67/kg.

The price of the wax from the German supplier in $/lb would be $11.90 / 0.76 = $15.68/lb.

To learn more about Pricing,

https://brainly.com/question/25716956

#SPJ4

Answer:

9.05L

Explanation:

Answer: 2.85 x 10^22

Explanation:

We can use stoichiometry to convert grams to atoms.

*Important quantities*

Original amount of Copper: 3 grams

Molar mass of Copper: 63.5 grams

Avogadro's number: 6.022x10^23 atoms/formula units/molecules

Process - [tex]\frac{3gramCu}{1}[/tex]×[tex]\frac{1 mole Cu}{63.5 gCu}[/tex]×[tex]\frac{6.022x10x^{23} }{1 moleCu}[/tex] = 2.84503937×10^22

After taking sig figs into account, the answer needs to be rounded to 3 decimal places

Final answer: 2.85 x 10^22

Answer:

I know this is very late I am sorry, but

I believe your answer would be C) 4.00 mol.

Correct me if I am wrong.

Explanation:

9040 divided by 2260= 4

0.222 moles of water  released 9040 J of energy.

The heat of vaporization is defined as the heat required to convert 1 g of a substance from liquid to vapor. We are told that the heat of vaporization of water is 2260 J/g.

Hence;

1g of water releases  2260 J of heat

xg of water releases  9040 J of heat

x = 1g ×  9040 J /2260 J

x = 4 g

1 mole of water contains 18 g

x moles of water contains 4 g

x = 1 mole  × 4 g/18 g

x = 0.222 moles

Learn more: https://brainly.com/question/10165688

Answer:

a) Double replacement

b) Synthesis

Explanation:

a) For A, we have two ionic reactants that form two ionic products, where the anion (or cation) is swapped. This is a characteristic of a double replacement reaction.

b) For B, two elements, this time two elements, react together to form one product that's unlike the reactants. This is a characteristic of a synthesis reaction.

Na+ has one fewer electron than Na, making it smaller and possessing a higher effective nuclear charge.

The fact that sodium ions have just two electron shells makes them smaller than sodium atoms for the main reason (the atom has three). Because they both have the same number of nucleons, the Na+ ion and Na atom have the same nuclear charge. Na+, on the other hand, has a smaller nuclear charge than Na because it has one fewer electron. Na+ is therefore smaller than Na because there is more attraction on the electrons that are already there. A sodium ion's size is smaller than that of a sodium atom.

Learn more about Nuclear Charge

brainly.com/question/17102072

#SPJ4