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The amount of CaCO₃ that are consumed at the reaction is 6.7 grams.

Ideal gas equation will be represented PV = nRT from which we can calculate the moles of carbon dioxide, where

On putting all these values, we get

n = (1)(1.5) / (0.082)(273) = 0.0669 moles = 0.067 mol

Given chemical equation is:

CaCO₃ + 2HCl → CO₂ + CaCl₂ + H₂O

From the stoichiometry of the reaction it is clear that,

1 moles of CO₂ = produced by 1 moles of CaCO₃

0.067 moles of CO₂ = produced by 0.067 moles of CaCO₃

Now mass of CaCO₃ will be calculated as:

n = W/M, where

W = (0.067)(100) = 6.7g

Hence required mass of CaCO₃ is 6.7g.

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Answer:

Explanation:

Global warming is the unusually rapid increase in Earth's average surface temperature over the past century primarily due to the greenhouse gases released as people burn fossil fuels.

Answer:

You can find in the given attachemnet

Answer:

4.North to south

Explanation:

In magnetic fields, the north pole is considered negative while the south pole is considered positive. Hence the balloon will be attracted from the north towards the south pole since it is negatively charged.

Answer:

rust

Explanation:

Chemical rxn of iron and oxygen = rust

Answer: evaporate

Explanation:

Answer:

Producers.

Explanation:

Since the source of energy is the sun, the trophic level representing producers contains the most energy.

Answer:

101.98 L

Explanation:

Ideal Gas Law    PV = n R T          R = gas constant = .082057 L-atm/mol-K

6.35 (V) = 4 * .082057 * 1973  

  V = 101.98 L

The magnitude of the orbital angular momentum of the electron is doubled when the radius of the electron orbit increases by a factor of four.

The orbital angular momentum is the sum of angular momenta of all electrons, it is the rotational analog of the linear momentum.

The formula of angular momentum

[tex]\rm mvr = \dfrac{nh}{2 \pi}[/tex]

Thus, the magnitude of the orbital angular momentum of the electron is doubled when the radius of the electron orbit increases by a factor of four.

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Answer:

False.

Explanation:

The combining of the nuclei of atoms is known as nuclear fusion.

The statement that nuclear fission is the combining of small nuclei into larger ones is false.

Nuclear fission is a process in which one nucleus splits into two or more small nuclei. The process release large amount of energy and produce gamma photons.

Opposite to it, Nuclear fusion is a process of combining of small nuclei into larger ones.

Thus, the statement is false, because nuclear fission is a process of splitting of a nucleus.

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Answer:

X is an element in period 3 with two electrons in the outer shell. Draw a full diagram of the ion form by this element

Alkanes contain the maximum possible amount of hydrogen, they are known as being saturated hydrocarbon.

The easiest category of hydrocarbons would be the alkanes. They exclusively possess hydrogen as well as carbon. So every hydrogen atom produces one link, while each carbon atom generates four.

When all of a hydrocarbon's carbon-carbon bonds possess single bonds, the hydrocarbon was said to have been saturated. A hydrocarbon would be an organic substance with only carbon as well as hydrogen as its components.

Therefore, alkanes contain the maximum possible amount of hydrogen, they are known as being saturated hydrocarbon.

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Thats an alkane.

Option  B.

Answer:

option b) is the answer ..that an alkane

Answer:

→ 22.9 g of N2.

Explanation:

→ The molar mass of CuO is 63.5 + 16 = 79.5

→ The molar mass of N2 is 2×14 = 28

According to the equation, for every 3 molecules of CuO, one molecule of N2 is made.

Therefore,

3×79.5 g of CuO make 28 grams of N2.

Therefore,

195 g of CuO make

[tex]28×(195/3×79.5) = 22.9 g of N2.[/tex]

Answer:

Co²⁺ and PO₄³⁻

Explanation:

Strong electrolytes completely dissolve in water. Therefore, the ionic bonds between the cation and anion in Co₃(PO₄)₂ would break apart. The resulting ions would be Co²⁺ and PO₄³⁻. The phosphate (PO₄³⁻) would NOT further seperate because the phorphorus and oxygen bonds are covalent, not ionic. Phosphate ions are a type of polyatomic ion (ions which have covalent bonds).

The current required to accumulate the 1.22 grams of nickel in 0.5 hours is 2.23 A.

The current is given as the product of the charge with time. In the electrochemical analysis of the nickel, there will be a reduction of the nickel ion to nickel. The formation is given as:

[tex]\rm Ni^{2+}+2e^-\;\rightleftharpoons Ni[/tex]

There is the deposition of 1 mole of Ni with 2 electrons transfer. The transfer of charge for 1 mole that is 58.7 grams Nickel is:

[tex]\rm 58.7\;g=2\;\times\;96487\;C\\58.7\;g=192974\;C[/tex]

The mass of Ni to be deposited is 1.22 grams. The charge required is given as:

[tex]\rm 58.7\;grams\;Ni=192974\;C\\\\1.22\;grams\;Ni=\dfrac{192974}{58.7}\;\times\;1.22\;C\\\\1.22\;grams\;Ni=4010.7\;C[/tex]

The current required to transfer 4010.7 C of charge in 1800 seconds is given as:

[tex]\rm Charge=Current\;\times\;Time\\4010.7\;C=Current\;\times\;1800\;sec\\Current=2.23\;A[/tex]

Thus, the current required to accumulate the 1.22 grams of nickel in 0.5 hours is 2.23 A.

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Answer:

10 atm

Explanation:

There's a lot to do here, but lets take it one step at a time. First, let's write a balanced equation for the decomposition of potassium chlorate into potassium chloride and oxgyen gas.

2 KClO3 → 2 KCl + 3 O2

Now let's find the moles of the KClO3 (molar mass 122.55 g/mol) that we have take 10 g/122.55 g/mol, grams will cancel and we are left with 0.0816 moles. lets divide that by two since we have a two in front of the KClO3 in the equation, and then multiply that number by 5 since it's the total moles of products, in summary, multiply by 5/2 to get 0.204 moles.

Now that we know the moles of our products, let's plug some stuff into the ideal gas law PV = nRT. We are looking for P so let's solve for that. P = (nRT)/V, now let's plug in our values. Make sure V is converted to liters so 0.5 L. And convert celcius to kelvin by adding 273

P = ((0.204 moles)(318 K)(0.08206 L atm mol^-1 K^-1))/0.5 L

A lot of units cancel, and we get about 10.65 atm, if you don't want the answer in atm, you can find a conversion equation. But let's round to sig figs for now, which will bring us to 10 atm.

[tex]\huge{\green}\fcolorbox{blue}{cyan}{\bf{\underline{\red{\color{red}Answer}}}} [/tex]

The required elemental gas which has a mass of 10.3 g in the given conditions is helium gas.

Relation between the molar mass and moles of any substance will be represented as:

n = W/M, where

Moles of gas will be calculated by using the ideal gas equation:

PV = nRT, where

On putting all values, we get moles

n = (758)(58.4) / (62.363)(298) = 44,267.2 / 18,584.2

n = 2.38 moles

Molar mass of the gas will be calculated by using the above first equation is:

M = 10.3g / 2.38mol = 4.32 g/mol = 4g/mol (approx)

Hence given elemental gas is helium.

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Answer:

high I think

Explanation:

i just did it

Answer:

Bond forms to get stability. Stability will be maximum at low potential energy. So, in bond formation, atoms loose their potential energy to get stabilized and heat is evolved. Generally bond formation is also an exothermic reaction

Answer:

T=-166.8 C

Explanation:

PM=m/vRT

T=PMV/mR

T=5.8*14*1.3/12.1*0.08206

T=106.3K

=106-273.15=-166.8 C

The concentration of the hydrogen ions from molarity can be given with the number of hydrogen atoms in the molecular formula.

Molarity is given as the moles of the solute present in a liters of solution. The compound with the number of hydrogen atoms in the molecular formula with degradation possesses the equivalent concentration of the hydrogen ions.

The compound with molecular formula AH having molarity 2, will produce 2M of hydrogen ions.

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The entropy change if one mole of water is warmed from 0 degree C to 100 degree C is 1,316.7 J/K.

Change in entropy will be measured by using the below equation as:

ΔS = (n)(Cp)ln(T₂/T₁), where

n = moles of water = 1 mol

Cp = specific heat of water = 4180 J/mol.K

T₂/T₁ = ratio of temperatures in K = 373 / 273 = 1.37 K

On putting values, we get

ΔS = (1)(4180)ln(1.37) = (4180)(0.315)

ΔS = 1,316.7 J/K

Hence required value of entropy is 1,316.7 J/K.

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Answer:

Based on the electronegativity difference between them, K-C is ionic, and C-O is polar covalent.

What is a bond?

A bond is formed by the interaction of two atoms. A bond can be either ionic or covalent.

Now we have to look at the electronegatives on each bond. The electronegativity difference between the K-C bond is larger than that between the C-O bond hence, K-C is ionic, and C-O is polar covalent.

Explanation:

Answer:

heat increase,   pressue loss,  altitude gain,  

Explanation: