Net Force :
Direction:
Unbalanced or balanced

1.  We have to divide the coefficient of equation I by 2 to get equation II.

a. Both equations are balanced but equation II is the correct way to write a

balance equation.

b. It will be correct if we divide equation II coefficient by another factor

but  we will get fractions as coefficient. For example

\(\frac{1}{2}\)SnO₂ + H₂→  \(\frac{1}{2}\)Sn + H₂O

c. The correct method is checking if the number of moles of element on

the reactant side is same as the those on the product side. And the

conventional way is making sure the coefficients are whole numbers.

i.   2SnO₂ + 4H₂ → 2 Sn + 4H₂O

ii.  SnO₂ + 2H₂→  Sn + 2H₂O

We have to divide the coefficient of equation I by 2 to get equation II.

Both equations are balanced but equation II is the correct way to write a

balance equation.

If we divide the coefficients of equation II by another number, we will not

get a whole number coefficients. The coefficient will be fractions , it will

be  correct but its not conventional.  

The best method to know if equation is written the correct way is checking

if the coefficient are in the lowest whole number factors.

we also have to check if each moles of elements found in the reactant is

the same in the product side.

read more: https://brainly.com/question/16609984?referrer=searchResults

Answer:We have to divide the coefficient of equation I by 2 to get equation II.

Explanation:

Answer: Anaphylaxis

Explanation:

I have a nut allergy, and this has happened to me once. The doctors also told me a lot about anaphylaxis, and I like to learn about myself.

I hope this helps!! :)

In the equation 2HNO3 + 6 HI → 2 NO3 + I2 + 4 H2O, the element that is oxidized is iodine (I).

In the reaction 2HNO3 + 6 HI → 2 NO + 3 I2 + 4 H2O, the element that is oxidized is iodine (I) from HI. The oxidation number of a neutral atom is zero. When the atom is oxidized, it loses electrons (which have a negative charge), so the oxidation number goes up. When the atom is reduced, it gains electron (it gains negative charge), so the oxidation number goes down.

To know more about oxidized visit:

https://brainly.com/question/13182308

#SPJ11

Answer:

I (iodine)

Explanation:

In this redox reaction, I is oxidized because its oxidation number increases from −1 to 0.

Answer:

Explanation:

The formula for sodium is Na. It does not form a molecule in some way.

1 mol Na = 6.02*10^23 atoms

3.91 mol = x                                    Cross multiply

x = 3.91 * 6.02 * 10^23

x = 23.65 * 10^23

x = 2.365 * 10^24

Scientific notation is always expressed as a number 1 ≤ x < 10

To solve this problem, we must take into account Avogadro's number. Avogadro's number tells us that in one mole of any substance there are 6.022x10^23 atoms. Applying this relationship we have that the moles of potassium (K) are:

Now, to go from moles to grams, we must multiply the moles by the molar mass of potassium. The molar mass of potassium is 39.1g/mol. So, the grams of potassium will be:

Answer: In 3.4x10^23 atoms of potassium there are 22.1 grams

Answer:

b12 and d3

Explanation:

Double replacement or metathesis reaction involves the exchange of ions between two compounds.

Combination or synthesis reaction is a  type of reaction that  involves two or more reactants combining to form a single product. The general format is A + B → AB.

Decomposition reaction involves a single reactant breaking down into two or more products. The general format is AB → A + B.

The matching of the letters are;

1 - C

2 - H

3 - E

4 - F

5 - A

6 - B

7 - I

8 - J

9 - G

10 - D

1) False

2) False

3) True

4) False

5) True

6) True

7) True

Learn more about reaction:https://brainly.com/question/28984750

#SPJ1

Hydrazine is a chemical compound with the formula \(N_2H_4\). 120 molecules of\(NH_3\) will be formed if 60 molecules of \(N_2H_4\) decompose into \(N_2\) and \(NH_3\).

It is used as a rocket fuel and as a polymerization catalyst in the production of plastics and when hydrazine decomposes, it produces nitrogen gas (\(N_2\)) and ammonia (\(NH_3\)). If 60 molecules of hydrazine decompose into \(N_2\) and \(NH_3\), the number of molecules of \(NH_3\) that will be formed can be determined using the balanced equation for the reaction: \(N_2H_4 -- > N_2 + 2NH_3\). For every one molecule of hydrazine that decomposes, two molecules of ammonia are formed. Therefore, the number of ammonia molecules produced is twice the number of hydrazine molecules that decompose. Since 60 molecules of hydrazine are decomposing, the number of ammonia molecules formed is: 2 x 60 = 120 molecules of \(NH_3\)

To learn more about Hydrazine click here https://brainly.com/question/31035102

#SPJ11

Answer:

Groups I & II

Explanation:

The most reactive metal groups on the periodic table are metals of group 1 and II.

Group I elements are the alkali metals

Group II elements are the alkali earth metals

Therefore, elements in groups I and II are the most reactive metallic groups.

Group I elements prefers to lose one electron to attain an octet configuration.

Group II elements prefers to lose two electrons.

Answer:

Molecular formula = C₄H₆As₆Cu₄O₁₆

Explanation:

Given data:

Empirical formula = C₂H₃As₃Cu₂O₈

Molar mass of compound = 1013 g/mol

Molecular formula = ?

Solution:

Molecular formula = n (empirical formula)

n = molar mass of compound / empirical formula mass

Empirical formula mass  of C₂H₃As₃Cu₂O₈ is 506.897 g/mol

by putting values.

n = 1013 / 506.897

n = 2

Molecular formula = n (empirical formula)

Molecular formula = 2 (C₂H₃As₃Cu₂O₈)

Molecular formula = C₄H₆As₆Cu₄O₁₆

The periodic table's group 17 substance is probably a halogen. This element would appear metallic or black in solid form.

The six elements in Group 17 of the periodic table compose the halogen elements. In the periodic table, group 17 is represented by the elements fluorine (F), chlorine (Cl), bromine (Br), iodine (I), astatine (At), and tennessine (Ts).

From top to bottom, the group 17 elements are fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At). They are known as "halogens" because when they interact with metals, they produce salts.

The elements that make up group 17 of the periodic table are the halogens. They are nonmetals that are reactive, such as iodine, bromine, chlorine, and fluorine. Halogens are non-metals that are very reactive. These substances share a lot of characteristics with one another.

To know more about metals :

https://brainly.com/question/28650063

#SPJ9

Explanation:

i found this I hope it helps

The initial moles of HF are calculated by multiplying the volume of the solution by the molarity of the solution. The initial moles of NaOH are calculated in the same way. The calculation of the pH after the addition of 25 mL of 0.1 M NaOH to 50 mL of 0.2 M HF

Initial moles of HF = 50 mL * 0.2 M = 10 mmol

Initial moles of NaOH = 25 mL * 0.1 M = 2.5 mmol

After the addition of NaOH, the moles of HF remaining are 10 mmol - 2.5 mmol = 7.5 mmol

The concentration of HF is 7.5 mmol / 75 mL = 0.1 M

The pKa of HF is 3.14

The pH of the solution is pKa + log(1/[HF]) = 3.14 + log(1/0.1) = 4.14

The moles of HF remaining after the addition of NaOH are calculated by subtracting the moles of NaOH from the initial moles of HF. The concentration of HF is calculated by dividing the moles of HF by the volume of the solution. The pKa of HF is a measure of how acidic HF is.

The pH of the solution is calculated by adding the pKa to the log of the reciprocal of the concentration of HF.

To know more about pH , click here:-

https://brainly.com/question/2288405

#SPJ11

Answer:

Divide the distance the object traveled by the time it took to get there.

Explanation:

To calculate the speed on an object, start by determining how far the object has traveled. Next, figure out the amount of time that the object took to cover that distance. Finally, divide the distance the object traveled by the time it took to get there. Don't forget to label the speed with the correct units of measurement.

The equilibrium concentrations of the substances in the reaction A+B ->C+D is Keq = [C]x[D]/0.450 x 1.00.

Equilibrium is a state of balance between opposing forces. It occurs when two forces are equal and opposite in direction and magnitude, so that no net force exists. This can be seen in physical, chemical, and economic systems. In physical systems, equilibrium occurs when the total energy of the system is at a minimum or maximum, or when the forces in a system are balanced.

The equilibrium concentrations of the substances in the reaction A+B ->C+D can be determined by using the equilibrium expression. The equilibrium expression is given by:

K_eq = [C]x[D]/[A]x[B]

Since we know that the equilibrium concentration of A is 0.450 mol/L, and the initial concentrations of A and B are both 1.00 mol/L, we can solve for the equilibrium concentrations of the other substances using the equilibrium expression.

K_eq = [C]x[D]/0.450 x 1.00

K_eq = [C]x[D]/0.450

The equilibrium concentrations of the other substances can then be calculated by rearranging the equations.

[C] = K_eq x 0.450/[D]

[D] = K_eq x 0.450/[C]

The equilibrium constant, Keq, can then be solved for by substituting the equilibrium concentrations of C and D into the equilibrium expression.

K_eq = [C]x[D]/0.450 x 1.00

K_eq = [C]x[D]/0.450

Therefore, the equilibrium concentrations of C and D can be determined by substituting the value of Keq into the equations above.

[C] = K_eq x 0.450/[D]

[D] = K_eq x 0.450/[C]

The equilibrium constant, Keq, is equal to the product of the equilibrium concentrations of C and D divided by the initial concentrations of A and B.

Keq = [C]x[D]/0.450 x 1.00

To learn more about equilibrium

https://brainly.com/question/18849238

#SPJ1

Answer:

Two Helium atoms

If two carbon atoms underwent fusion (of 600 million kelvin) you would get two helium atoms.

An even distribution of electron density across the molecule, which means that the molecule has no distinct positive or negative ends. This lack of polarity makes the molecule symmetrical, and the forces of attraction between individual molecules are weak. Consequently, nonpolar molecules tend to have low boiling points and are generally insoluble in polar solvents.

When two oxygen atoms come together to form an oxygen molecule (O2), they share electrons to form a covalent bond. In this bond, each oxygen atom shares two electrons with the other oxygen atom, creating a stable molecule.

While it is true that the oxygen atoms in O2 molecule are electronegative and pull on the shared electrons in opposite directions, the two oxygen atoms are identical in terms of their electronegativity. This means that they pull on the electrons with equal strength, resulting in a balanced distribution of charge across the molecule. As a result, the molecule becomes nonpolar.

Click the below link, to learn more about Oxygen Atoms bond:

https://brainly.com/question/12442489

#SPJ11

Answer: Burning fuels?

Explanation: I’m not very sure actually

(i) The initial reaction rate is \(2*10^{-4} mol litre^{-1} sec^{-1.\)

(ii) The half-life period of the reaction is 1386 seconds.

(iii) The time taken to complete 75% of the reaction is approximately 2772 seconds.

We can use the first-order rate equation:

Rate = k[N2O5]

Where:

Rate is the reaction rate,

k is the rate constant,

[N2O5] is the concentration of N2O5.

Given:

Rate constant (k) = \(5*10^{-4} sec^{-1}\)

Initial concentration of N2O5 =\(0.4 mol litre^{-1}\)

(i) To find the initial reaction rate:

Substitute the given values into the rate equation:

Rate = k[N2O5]

Rate = \((5*10^{-4} sec^{-1})(0.4 mol litre^{-1})\)

Rate = \(2*10^{-4} mol litre^{-1} sec^{-1}\)

The initial reaction rate is \(2*10^{-4} mol litre^{-1} sec^{-1}\).

(ii) To find the half-life period:

The half-life of a first-order reaction is given by the equation:

t(1/2) = (0.693 / k)

Substitute the given value of k into the equation:

t(1/2) = \((0.693 / 5*10^{-4} sec^{-1})\)

t(1/2) = 1386 sec

The half-life period of this reaction is 1386 seconds.

(iii) To find the time taken to complete 75% of the reaction:

The time required to complete a certain percentage of a reaction can be found using the equation:

t = (ln(1 / (1 - x)) / k)

Where x is the fraction of the reaction completed (in this case, 75%).

Substitute the given values into the equation:

t =\((ln(1 / (1 - 0.75)) / 5*10^{-4} sec^{-1})\)

t = 2772 sec

The time taken to complete 75% of the reaction is approximately 2772 seconds.

To know more about reaction rate refer here

https://brainly.com/question/13693578#

#SPJ11

After your body food break down 'proteins, fats and carbohydrates are digested, absorption takes place in the small intestine'

Most of the digestion occurs in the first part of the small intestine while the absorption of broken down nutrients, water, vitamins, and minerals occurs in the rest of it and the small intestine absorbs most of the nutrient in food, and then circulator system passes them into other parts of body to store and use them

Know more about food break down

https://brainly.com/question/17293137

#SPJ1

The estimated equilibrium constant for the reaction Br2(g) + Cl2(g) ⇋ 2BrCl(g) at 610 K is 1.16.

To estimate the equilibrium constant, we can use the equation:

ΔG° = -RTln(K)

where ΔG° is the standard Gibbs free energy change, R is the gas constant, T is the temperature in Kelvin, and K is the equilibrium constant.

For the reaction 2NO2(g) ⇋ N2O4(g), the given ΔH°f for N2O4(g) is 9.16 kJ/mol. Using this value, we can calculate the standard Gibbs free energy change:

ΔG° = ΔH° - TΔS°

where ΔS° is the standard entropy change. We do not have this value, but we can assume it is roughly constant for this type of reaction. Thus, we can estimate ΔG° to be:

ΔG° ≈ ΔH° = 9.16 kJ/mol

At 610 K, we have:

ΔG° = -RTln(K)

-9100 J/mol = -(8.314 J/mol/K)(610 K)ln(K)

ln(K) ≈ 2.37

K ≈ e^2.37 = 10.7

Therefore, the estimated equilibrium constant for the reaction 2NO2(g) ⇋ N2O4(g) at 610 K is 10.7.

For the reaction Br2(g) + Cl2(g) ⇋ 2BrCl(g), we are given the ΔH°f for BrCl(g) as 14.6 kJ/mol and the ΔG°f for BrCl(g) as -1.0 kJ/mol. Using the same assumptions as before, we can estimate ΔG° to be:

ΔG° ≈ ΔH° = 14.6 kJ/mol

At 610 K, we have:

ΔG° = -RTln(K)

-1000 J/mol = -(8.314 J/mol/K)(610 K)ln(K)

ln(K) ≈ 0.15

K ≈ e^0.15 = 1.16

Therefore, the estimated equilibrium constant for the reaction Br2(g) + Cl2(g) ⇋ 2BrCl(g) at 610 K is 1.16.

Learn more about reaction here:

https://brainly.com/question/30464598

#SPJ11

The alpha allylic cleavage fragmentation of 5,5 dimethylhexen-1-ol would result in the formation of a 3-methylbut-2-enal fragment and a 2-methylbut-3-en-2-ol fragment. The ion mass of the product formed would be 114 amu (atomic mass units), which corresponds to the 3-methylbut-2-enal fragment.

The stability of the product formed can be attributed to the resonance stabilization of the carbocation intermediate formed during the fragmentation process. The alpha allylic cleavage leads to the formation of a tertiary carbocation, which can undergo resonance stabilization by delocalizing the positive charge over the adjacent carbon atoms. This resonance stabilization increases the stability of the carbocation intermediate, and hence, the overall stability of the product formed.

Know more about fragmentation here:

https://brainly.com/question/22794143

#SPJ11

Answer:

This answer is 108g mass of aluminum is produced from 100g of aluminum oxide

Answer:

110.88g

Explanation:

Given parameters:

Mass of CO₂   = 2.52mole

Unknown:

Mass of CO₂ in the given mole  = ?

Solution:

To solve this problem, we use the mole concept.

   Number of moles (mol)  = \(\frac{mass(g)}{molar mass(g/mol)}\)  

So;

     Mass (g)  = Number of moles(mol) x molar mass(g/mol)

 Molar mass of CO₂   =  12 + 2(16)  = 44g/mol

      Mass(g)  = 2.52 mole x   44g/mole

      Mass(g)  = 110.88g

Species CH3ONa and CH3MgBr are less basic than acetylide. The correct option is (d) both a and c.

Acetylide anion is a strong base due to the presence of a highly electronegative sp carbon adjacent to a very electropositive lithium or sodium. The lone pair of electrons on the carbon atom is highly delocalized and can easily abstract a proton from a suitable acid.

On the other hand, both CH3Li and CH3MgBr are weak bases. Although they have negative charges, the carbon atoms are not highly electronegative and they do not stabilize negative charge as effectively as the sp carbon in acetylide anion. Hence, they are less basic than acetylide anion.

CH3ONa is a stronger base than acetylide anion because the oxygen atom in CH3ONa is more electronegative than carbon, and can stabilize negative charge more effectively. The negative charge is localized on the oxygen atom and is not delocalized over a larger region, making it a weaker base than acetylide.

Visit here to learn more about carbon:

brainly.com/question/19083306

#SPJ11

The energy transformation takes places in a battery operated radio is chemical energy to electrical energy then to sound energy or acoustical. Thus, fifth option is correct.

Energy can be transformed from one form to the other, For example, when we produce current from solar cells there occurs the transformation of light energy to electrical energy.

A battery contains two electrodes immersed in a molten electrolyte. When a potential difference is applied between these electrodes one of the electrode undergo reduction and the second one to oxidation.

The chemical energy produced from the electrolyte produce current and thus the energy is transformed to electrical energy. Using this electrical current the radio produces sound energy.

Therefore, the basic three- stage energy transformation for a battery operated radio is chemical energy to electrical energy then to sound energy or acoustical  hence, fifth option is correct.

To find more about energy transformations,  refer the link here:

https://brainly.com/question/8210521

#SPJ1

Answer:

In the chemical industry.

Isotopes are the atoms of the same element with same atomic no: and different mass numbers. ... ⇒As isotope of uranium is used as a fuel in nuclear reactor. ⇒An isotope of iodine is used in the treatment of goitre. ⇒An isotope of cobalt is used in the treatment of cancer.

Answer:0

Explanation: zero because it is the most stable form of oxygen in its standard state