Can anyone help me on this please.

Answer:

In conclusion, the net ionic equation for the reaction between calcium carbonate and hydrochloric acid is CaCO3 solid plus two H+ aqueous react to form Ca2+ aqueous plus CO2 gas plus H2O liquid.

When calcium carbonate reacts with hydrochloric acid, calcium ions are transferred to the solution, the the net ionic equation is CaCO₃(s) + 2H⁺ → Ca²⁺ + CO₂ + OH⁻ + H⁺.

Net ionic equation of any reaction is the equation where all entities are written in the form of ions except spectator ions.

Given chemical reaction is:

CaCO₃(s) + 2HCl(aq) → CaCl₂(aq) + CO₂(g) + H₂O(l)

Ionic reaction for the above reaction will be written as:

CaCO₃(s) + 2H⁺ + 2Cl⁻ → Ca²⁺ + 2Cl⁻ + CO₂ + H⁺ + OH⁻

In the baove reaction Cl⁻ is the spectator ion as they are present on both sides of the given chemical reaction. So the net ionic reaction will be written as:

CaCO₃(s) + 2H⁺ → Ca²⁺ + CO₂ + OH⁻ + H⁺

Hence the net ionic reaction is CaCO₃(s) + 2H⁺ → Ca²⁺ + CO₂ + OH⁻ + H⁺.

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Germanium (Ge) has properties that are similar to silicon.

Suppose 5.0 mol of antimony (III) fluoride is added to 10.0 mol of carbon tetrachloride, and from the 100% reaction there are the equivalents of 0 moles of SbF₃, 5.0 moles of SbCl₃, 0 moles of CCl₄, and 15.0 moles of CClF₂.

A balanced reaction is one where the reactants and products are present in equal amounts, and if the 100% reaction takes place, then the reactant sides have 1 mol of SbF₃ and 3 mol of CCl₄ that make the product of 1 mol of SbCl₃ and 3 mol of CClF₂. After the 100% reaction, all the reactants get converted into the product. The complete reaction is the below.

SbF₃ + 3CCl₄ → SbCl₃ + 3CClF₂

Hence, suppose  5.0 mol of antimony (III) fluoride is added to 10.0 mol of carbon tetrachloride, and from the 100% reaction there are the equivalents of 0 moles of SbF₃, 5.0 moles of SbCl₃, 0 moles of CCl₄, and 15.0 moles of CClF₂.

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Answer:

Circuit 1 = ?

Circuit 2 = Parallel

Explanation:

Since circuit 1 isn't shown on the picture, it's probably a series circuit, but if circuit 1 is a box with symbols around it, then it's a series circuit. But if it has three or more horizontal lines/cables like circuit 2, then it's a parallel circuit - circuit 2 has a second horizontal line with an open switch and lamp.

Circuit 2 is a parallel circuit, as it has branches/horizontal lines (that were explained in the paragraph above).

Answer:

Well, by definition,

molarity = moles of solute

               volume of solution

Explanation:

Now the moles of solute are a constant. The volume of solution MAY change substantially with increasing or decreasing temperature. In some calculations molality is used in preference, which is defined by the quotien

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The genotypes are not found in the question, but p and q can be used to calculate genotypic frequencies by using the equation p2 + 2pq + q2 = 1.

The Hardy–Weinberg principle is a model used in population genetics to estimate allele and genotypic frequencies in a population.

According to the Hardy–Weinberg principle, the sum of p + q is equal to 1, where p and q represent the dominant and recessive alleles, respectively.

The Hardy–Weinberg principle considers the absence of different evolutionary forces acting on the population.

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The formula for calculating the probability of an offspring from a population having each of the following genotypes is p2 + 2pq + q2 = 1.

The number of people with a particular genotype divided by the total number of people in a population is known as genotype frequency.

p2 + 2pq + q2 = 1 is the Hardy Weinberg equation.

Thus, the formula for calculating the probability of an offspring from a population having each of the following genotypes is p2 + 2pq + q2 = 1.

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No of moles:-

[tex]\\ \tt\Rrightarrow Molarity (Volume)[/tex]

[tex]\\ \tt\Rrightarrow 0.00045(0.7)[/tex]

[tex]\\ \tt\Rrightarrow 0.000315mol[/tex]

Mass:-

The element which is likely to have a high thermal conductivity among given options is sodium.

Thermal conductivity of any substance is define as the capability of the substance to carry heat or transfer of heat.

As we know that metals are the good conductors of heat and non-metals are bad conductors, so we exclude carbon, antimony and chlorine atom from this group as they are non-metals. And sodium atom has the thermal capability.

Hence option (4) is correct.

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Answer: Option (4) is correct

Explanation:

The second quantum number of a 3p₃ electron in phosphorus 1s2, 2s2, 2p6, 3s2, 3p3 is 3.

Quantum numbers are a set of numbers that describe the position and energy of an electron in an atom.

Principal, azimuthal, magnetic, and spin quantum numbers are the four types of quantum numbers.

Thus, the second quantum number of a 3p₃ electron in phosphorus 1s2, 2s2, 2p6, 3s2, 3p3 is 3.

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An electric motor works by converting electrical energy to mechanical energy in order to create motion.

For example,Force is generated within the motor through the interaction between a magnetic field and winding alternating (AC) or direct (DC) current.

This works because…

Answer : When an electric current flows through the wire in the electromagnet, a magnetic field is produced in the coil.

[tex]\:\mathsf{Hope\:this\:helps\:you!}[/tex]

Answer:

when an electric current flows through the wire in the electromagnet , a magnetic field is produced in the coil .

Explanation:

Answer:

forward and reverse reaction rates

Explanation:

meaning the equilibrium is reached faster. So if the reaction is already at equilibrium there will be no effect on a concentration-time or moles-time graph.

6 important factors that affect evaporation are : 1. Wind assists evaporation; for example in clothes dry faster under a fan. 2. Heat assists evaporation; for example, in summer clothes dry faster than in winter.

Now have a free meme

Based on the data provided from the experiment using the calorimeter, the heat absorbed by water is 188.1 Joules

A calorimeter is an equipment used in the laboratory to enthalpy change of a reaction.

A calorimeter is insulated to ensure no heat losses or gain from the surroundings.

To determine the Joules of heat absorbed by water, the formula below is used:

Specific heat capacity of water = 4.18 J/g.°C

Heat absorbed by water = 15 × 4.18 × (55 - 25)

Heat absorbed by water = 188.1 Joules

Therefore, the heat absorbed by water is 188.1 Joules.

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Answer:

Chlorine

Explanation:

Answer:

Explanation:

15 moles of NaCl will be obtained from 15 moles of Na.

Answer:

D. a program on a computer

Explanation:

For a reaction  2Na + 2H2O --> 2NaOH + H2,  The moles of Na needed to produce exactly 5.6 liters of H2 is mathematically given as

moles of H2=0.125mole

Generally, the equation for the  Chemical Reaction is mathematically given as

2Na + 2H2O -> 2NaOH + H2(g)

Therefore, since 2Na gives 1H2

PV=nRT

Hence

n=PV/RT

n=1*5.6/0.0821 *273

n=0.249mols

In conclusion,The moles is

2Na=1H2

moles of H2=0.125mole

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Answer:

two electrons

Explanation:

Calcium atoms will lose two electrons in order to achieve the noble gas configuration of argon.

Answer:

An acidic oxide reacts with water and produces acid. They are also called acid anhydride, which are oxides that react with water to form an acid, or with a base to form a salt. They are oxides of either nonmetal or of metals in high oxidation states. An oxide is a binary compound that we obtain upon the reaction of oxygen with other elements. Their chemistry can be systematically understood by taking an oxoacid and removing water from it until only an oxide remains. The resulting oxide belongs to this group of substances. Usually, it is the oxide of non-metals. For example, sulfurous acid (SO2), sulfuric acid (SO3), and carbonic acid (CO2) are acidic oxides. Thus, CO2 dissolves in water to give carbonic acid, and NO2 gives a mixture of nitrous and nitric acids. An inorganic anhydride (a somewhat archaic term) is an acid anhydride without an organic moiety.

Explanation:

The concentration of NaOH that is used to completely neutralize is 0.25 Liters.

We will calculate the concentration in terms of molarity by using the below formula:

M₁V₁ = M₂V₂, where

M₁ = molarity of H₂SO₄ = 2m

V₁ = volume of H₂SO₄ = 0.25 L

M₂ = molarity of NaOH = ?

V₂ = volume of NaOH = 2 L

On putting all these values on the above equation, we get

M₂ = (2)(0.25) / (2) = 0.25 L

Hence required volume is 0.25 L.

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Answer:A single-replacement reaction is a chemical reaction in which one element replaces another in a compound. F₂ + 2NaCl → 2NaF + Cl₂, where F replaces Cl in NaCl. A double-replacement reaction is a reaction in which the metals in two ionic compounds exchange partners.

Answer:

a

Explanation:

it will help stop frictoin

Long Answer:

Ionic: Cation is named first followed by the anion.

If it's an ionic compound with a transition metal, there are more than one possible ion. Molecular - named with the least electronegative ion first + prefixes are given to both ions to indicate number of atoms in each element.

Short Answer: Ionic compounds- Cation is named first, followed by the anion.

Explanation:

those to arrows between states which makes the chemical unstable right now so you need to change both those signs good luck!

The volume of hydrochloric acid, HCl produced from the reaction when 3.7 L of Cl₂ are used is 7.4 L

H₂ + Cl₂ —> 2HCl

Since the reaction occurs at standard temperature and pressure (STP), we can say that:

From the balanced equation above,

1 L of Cl₂ reacted to produce 2 L of HCl

From the balanced equation above,

1 L of Cl₂ reacted to produce 2 L of HCl

Therefore,

3.7 L of Cl₂ will react to produce = 3.7 × 2 = 7.4 L of HCl

Thus, the volume of HCl produced from the reaction is 7.4 L

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Answer:

16.015668 M

Explanation:

Concentration is mols/L

nacl molar mass is 58.44277 g/mol

moles = mass/molar mass

moles = 4.00391699

4mol/0.250L = 16.015668 M solution

Answer:

What are 5 types of chemical reactions?

1. Combination (Synthesis) reaction. A + B → AB.

2. Decomposition reaction. AB → A + B.

3. Displacement reaction. A + BC → AB + C.

4. Double displacement reaction. AB + CD → AD + BC.

5. Combustion reaction. CH4 +2O2 → CO2 + 2H2O.

Explanation:

The molarity of a solution that has 0.05 moles of HCL are added to 2 L of H2O is 0.025M.

The molarity of a solution can be calculated using the following formula:

M = n/V

Where;

M = 0.05/2

Molarity = 0.025M

Therefore, the molarity of a solution that has 0.05 moles of HCL are added to 2 L of H2O is 0.025M.

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