In each term equation below a blank line shows one term missing the terms may be an elemental symbol a coefficient or a subscript decide which term would balance the equation write the missing term in the second column the. Determine the reactants third column and products forth column of the reaction some reactions may have only one reactant or product and other reactions may have only one reactant or product and other reactions may have multiple reactants or products write your answers in the spaces in the table the first reaction involves sodium chloride not sodium carbon and iodine

Answer:

1 , 2 , 3

Explanation:

Answer

Contributed by Paul Flowers, Klaus Theopold & Richard Langley et al.

General Chemistry at OpenStax CNX

Learning Objectives

Outline the general approach for the isolation of transition metals from natural sources

Describe typical physical and chemical properties of the transition metals

Identify simple compound classes for transition metals and describe their chemical properties

We have daily contact with many transition metals. Iron occurs everywhere—from the rings in your spiral notebook and the cutlery in your kitchen to automobiles, ships, buildings, and in the hemoglobin in your blood. Titanium is useful in the manufacture of lightweight, durable products such as bicycle frames, artificial hips, and jewelry. Chromium is useful as a protective plating on plumbing fixtures and automotive detailing.

Answer:

To tell if a chemical reaction has occurred look at its color change, temperature change, Precipitate formation, gas production, and light emission.

The balanced chemical equation among the given reactions is:

Sn²⁺ + 2Fe³⁺  →  Sn⁴⁺ + 2Fe²⁺

Therefore, option (C) is correct.

A chemical equation of a reaction can be defined as the representation of a reaction in terms of chemical symbols of the substances used in the given reaction. The number of atoms of substances on the balanced equation is equal on either side of the equation.

According to the law of conservation of mass, while balancing a chemical equation, the total mass (reactant side) should be equal to the total mass (product side) in a chemical equation.

In the given equation, the positive charge on reactant side should be equal to the positive charge on product side.

[tex]Sn^{2+ }+ 2Fe^{3+} \longrightarrow Sn^{4+} + 2Fe^{2+}[/tex]

The two electrons lost by the Sn²⁺ ions get converted into Sn⁴⁺ ions. These two electrons are accepted by two ions of Fe³⁺ and converted into Fe²⁺ ions.

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Answer:

Soap that was thrown out

Answer:

Heat reaction

Explanation:

Heat must be applied in order to melt a substance.

Answer:

If capital R is round, than the RR and Rr will mean round, and the two rr's are wrinkled. that means the answer to both is 50%

Explanation:

hope that helps

Answer:

during interphase the cells start to grow

cells grow, store up energy, and take in nutrients

hope it helped :)

Answer:  Unbalanced : H2O

Balanced : 2H2O

Explanation:

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H2O

Explanation:

Water (chemical formula: H2O) is a transparent fluid which forms the world's streams, lakes, oceans and rain, and is the major constituent of the fluids of organisms. As a chemical compound, a water molecule contains one oxygen and two hydrogen atoms that are connected by covalent bonds.

Answer:

Basically, fragrances reach other person through sense of smell. So, the strength of the fragrances depends a lot on its evaporation, which is strongly related to the boiling point. Esters with higher molecular weight do not have a strong fragrance because it has a higher boiling point.

Answer:

ΔH°r = -114.40 kJ

Explanation:

Let's consider the following balanced equation.

4 HCl(g) + O₂(g) ⇒ 2 H₂O(g) + 2 Cl₂(g)

We can calculate the standard enthalpy change of the reaction (ΔH°r) using the following expression.

ΔH°r = ∑np × ΔH°f(p) - ∑nr × ΔH°f(r)

where

ΔH°r = 2 mol × ΔH°f(H₂O(g)) + 2 mol × ΔH°f(Cl₂(g)) - 4 mol × ΔH°f(HCl(g)) - 1 mol × ΔH°f(O₂(g))

ΔH°r = 2 mol × (-241.82 kJ/mol) + 2 mol × 0 kJ/mol - 4 mol × (-92.31 kJ/mol) - 1 mol × 0 kJ/mol

ΔH°r = -114.40 kJ

Answer:

Carbon is moving into the air

Answer: C diamond has a different crystal structure from graphite

Explanation:

The difference between the properties of  two forms of carbon is that

Diamond has a crystal structure  different from graphite.

Graphite and Diamond are known as allotropes of Carbon as they have the

same chemical properties but different crystal structure.

Diamonds form a 3 crystal lattice with no flexibility while Graphite are

bonded to sheets which makes them slide easily within one another and

gives it its soft texture.

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Answer: The rate increases 3 times on raising the temperature from 20degree to 30 degree​

Explanation:

According to Arrhenius equation with change in temperature, the formula is as follows.

[tex]ln \frac{k_{2}}{k_{1}} = \frac{-E_{a}}{R}[\frac{1}{T_{2}} - \frac{1}{T_{1}}][/tex]

where [tex]k_2[/tex] = rate constant at temp [tex]T_2[/tex]

[tex]k_1[/tex] = rate constant at temp [tex]T_1[/tex]

[tex]E_a[/tex]= activation energy

R= gas constant

[tex]T_1[/tex]= temperature = [tex]20^0C=(20+273)K=293K[/tex]

[tex]T_2[/tex]= temperature = [tex]30^0C=(30+273)K=303K[/tex]

[tex]ln \frac{k_{2}}{k_{1}} = \frac{-85\times 1000J/mol}{8.314J/Kmol}[\frac{1}{303} - \frac{1}{293}][/tex]

[tex]ln \frac{k_{2}}{k_{1}}=1.15[/tex]

[tex]\frac{k_{2}}{k_{1}}=3[/tex]

Thus rate increases 3 times on raising the temperature from 20degree to 30 degree​

Answer:

1.022ppm is the unknown concentration of the metal

Explanation:

Based on Lambert-Beer law, the increasing in signal of a detector is directly proportional to its concentration.

The unknown concentration (X) produces a signal of 0.255

99mL * X + 1mL * 100ppm / 100mL produces a signal of 0.502

0.99X + 1ppm produce 0.502, thus, X is:

0.255 * (0.99X + 1 / 0.502) =

X = 0.503X + 0.508

0.497X = 0.508

X =

1.022ppm is the unknown concentration of the metal

Answer: The empirical formula and the molecular formula of the hydrocarbon is [tex]C_2H_3[/tex] and [tex]C_4H_6[/tex] respectivley.

Explanation:

The chemical equation for the combustion of hydrocarbon having carbon, hydrogen and oxygen follows:

[tex]C_xH_y+O_2\rightarrow CO_2+H_2O[/tex]

where, 'x', 'y'  are the subscripts of Carbon, hydrogen

We are given:

Mass of [tex]CO_2[/tex] = 12.74 g

Mass of [tex]H_2O[/tex]= 3.913 g

Molar mass of carbon dioxide = 44 g/mol

Molar mass of water = 18 g/mol

For calculating the mass of carbon:

In 44g of carbon dioxide, 12 g of carbon is contained.

So, in 12.74 g of carbon dioxide, =[tex]\frac{12}{44}\times 12.74=3.474g[/tex] of carbon will be contained.

For calculating the mass of hydrogen:

In 18g of water, 2 g of hydrogen is contained.

So, in 3.913 g of water, =[tex]\frac{2}{18}\times 3.913=0.435g[/tex] of hydrogen will be contained.  

Mass of C = 3.474 g

Mass of H = 0.435 g

Step 1 : convert given masses into moles.

Moles of C =[tex] \frac{\text{ given mass of C}}{\text{ molar mass of C}}= \frac{3.474g}{12g/mole}=0.289moles[/tex]

Moles of H=[tex]\frac{\text{ given mass of H}}{\text{ molar mass of H}}= \frac{0.435g}{1g/mole}=0.435moles[/tex]

Step 2 : For the mole ratio, divide each value of moles by the smallest number of moles calculated.

For C =[tex]\frac{0.289}{0.289}=1[/tex]

For H =[tex]\frac{0.435}{0.289}=1.5[/tex]

The ratio of C : H = 1: 1.5

The whole number ratio will be = 2: 3

Hence the empirical formula is [tex]C_2H_3[/tex].

The empirical weight of [tex]C_2H_3[/tex] = 2(12.01)+3(1.008)= 27.04 g.

The molecular weight = 54.09 g/mole

Now we have to calculate the molecular formula.

[tex]n=\frac{\text{Molecular weight }}{\text{Equivalent weight}}=\frac{54.09}{27.04}=2[/tex]

The molecular formula will be=[tex]2\times C_2H_3=C_4H_6[/tex]

Answer:

C. Precipitation

It made me put more on my answer.

Answer:

30.1 g NaCl

Explanation:

Your first conversion is converting grams NaOH to moles of NaOH using its molar mass (39.997 g/mol). Then, use the mole ratio of 1 mol NaCl for every 1 mol NaOH to get to moles of NaCl. Then finally multiply by the molar mass of NaCl (58.44 g/mol) to get grams of NaCl.

20.6 g NaOH • (1 mol NaOH / 39.997 g NaOH) • (1 mol NaCl / 1 mol NaOH) • (58.44 g NaCl / 1 mol NaCl) = 30.1 g NaCl

Answer:

Explanation:  Ethanol, CH3CH2OH, has the highest of the three boiling points because it has the strongest dipole–dipole forces between molecules due to hydrogen bonding. ... Dimethyl ether, CH3OCH3, has the second- highest boiling point because it has dipole–dipole forces between molecules.

Answer:

1.57 mol NaN₃

Explanation:

First we use PV=nRT to calculate the number of N₂ moles that need to be produced:

Inputing the data:

And solving for n:

Finally we convert N₂ moles into NaN₃ moles, using the stoichiometric coefficients of the balanced reaction:

Answer:

To split an atom a neutron, traveling at an accurate speed must be shot at the nucleus.

Explanation:

Answer:

liquid (s), gas (m)

Explanation:

In gas chromatography, the phase of stationary would be made of great molecular weight that have non-volatile coated on the packed i.e. inside a column also the mobile phase represent the inert gas that carries the components that should be volatilized.

Now the physical form and the mobile phase is the liquid and the gas

The same would be relevant and considered too

Answer:

4 a minor but very important component of the atmosphere corban dioxide is released through natural processes such as reputation.;

Explanation:

a minor but very important component of the atmosphere corban dioxide is released through natural processes such as reputation

Explanation:

The two main categories of energy are potential energy (stored

energy) and kinetic energy (energy presently doing

work or causing change)...I hope this helps.

Answer:

It is the closest sir.

Have an amazing day and enjoy. P.S Good luck!

Explanation:

Let's chek the orders where mercury and rest planets present

Mercury is closest to sun so gravitational force is most

Answer:  The chemical formula of the gas is Xenon.

Explanation:

From Graham's law of effusion rates, the rate of effusion of a gas is inversely proportional to the square root of its molar mass.

[tex]\frac{rate_1}{rate_2}=\sqrt{\frac{M_2}{M_1}}[/tex]

Given: Rate of unknown gas = [tex]0.392\times R_{Ne}[/tex]  

Putting the values in the formula:

[tex]\frac{rate_X}{rate_{Ne}}=\sqrt{\frac{M_{Ne}}{M_X}}[/tex]

[tex]0.392=\sqrt{\frac{20.17}{M_X}}[/tex]

Squaring both sides:

[tex]0.154=\frac{20.17}{M_X}[/tex]

[tex]M_X=131g/mol[/tex]

As Xenon (Xe) has molar mass of 131g/mol, Thus the chemical formula of the gas is Xenon.

Answer:

GIVEN IT'S A MULTI CHOICE QUESTION:

1. False

2. True

3. False

4. True

IF ITS NOT

2

Explanation:

We haven't made human clones because human cloning is extremely controversial and many people believe it is unethical.

Cloning is a genetic technique that can be used to reproduce genetically identical organisms in a laboratory.

In conclusion, we haven't made human clones because human cloning is extremely controversial and many people believe it is unethical.

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Nitrogen reacts with Hydrogen to form Ammonia gas by Haber's Process.

N₂ + 3H₂ → 2NH₃

This law states that Mass can neither be created, nor destroyed and it can just be transformed from one form to another. This law has application as balancing of the reaction.

Balancing of a reaction is done according to the "Law of conservation of mass" and balancing helps in solving stoichiometry questions correctly as if we will not balance the reaction then the quantitative results in a particular question doesn't come correctly.

Balancing of a reaction helps in mole concept as well and it is one of the laws of chemical reactions as well.

Some examples of balanced chemical reaction are-

2Mg(s) + O₂(g) ⟶ 2MgO(g)

According to the given picture,

Correct option is C. It consists 1 molecule of Nitrogen gas, 3 moles of Hydrogen gas and 2 moles of Ammonia gas.

Therefore, Nitrogen reacts with Hydrogen to form Ammonia gas by Haber's Process.

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Answer:

F<S<Na<Ga<Sr

Explanation:

Atomic radius increased from the right of the periodic table to left, and from the top to the down