Increasing the _________________ of a reactant exposes more of it to the reaction taking place. a. catalyst
b. surface area
c. concentration
d. heat

Answers

Answer 1

Answer: I would go with B as more of the reactant is exposed per mol. A catalyst provides and alternate reaction path that reduces the activation energy but not necessarily exposes more of the reactant. Increasing the concentration wont increase the amount of exposed area nor will increasing the tempurature.

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Convert 338 L at 3.0 atm to its new volume at standard pressure. 1,014L

Answers

Answer:

1014 L

Explanation:

From the question,

Applying

PV = P'V'.................... Equation 1

Where P = initial pressure, P' = Final pressure, V = Initial volume, V' = Final volume

make V' the subject of the equation

V' = PV/P'........... Euqation 2

Given: P = 3 atm, V = 338L, P' = 1 atm (Standard pressure)

Substitute into equation 2

V' = (3×338)/1

V' = 1014 L

Hence the new volume is 1014 L

The SI unit for current is: joules

volts

ohms

amps

Answers

Ampere is the si unit of current

Given the balanced equation representing a reaction:H+(aq) + OH-(aq) ==> H2O(l) + energy
In this reaction there is conservation of
(1) mass, only
(2) mass and charge, only
(3) charge and energy, only
(4) charge, energy, and mass

Answers

Answer: option (4) charge, energy, and mass.

Justification:

1) Charge, energy, and mass are always conserved in every chemical reaction.

Charge, energy and mass are not created nor destroyed, but can be transferred.

2) The charge can only be transferred by the motion of electrons, so the charge can move and end up on a different atom, but when you add up all the charge is conserved.

The charge balance is verified in the given equation since:

left side right side

(1+) + (1-) = 1 - 1 = 0 0

∴ The total charge of the reactants equals the total charge of the products.

3) As for energy, the right side shows the "apparition" of some energy. That means that the reaction is exothermic, i.e. it releases energy.

The energy released is the net result of the difference in the potencial chemical energy of the bonds of the products and the reactants.

The reactants have more chemical energy stored than the reactants, so potential energy was transformed into heat energy.

4) As for the mass, its conservation is verified when you check that there are the same number of particles of each spieces: two particles of hydrogen in the reactand side, such as in the products; and the particles of oxygen are one in the reactants and one in the products.

A solution of hydrogen peroxide, H2O2, is titrated withpotassium permanganate, KMnO4, according to the following equation: 5H2O2 + 2KMnO4
+ 3H2SO4 = 5O2 + 2MnSO4 + 8H2O + K2SO4. It requires 46.0 mL of 0.145 Mol/L
KMnO4 to titrate 50.0 mL of the solution of H2O2. What is the mole per liter
concentration of H2O2 in the solution?

Answers

5H2O2 + 2KMnO4+ 3H2SO4 = 5O2 + 2MnSO4 + 8H2O + K2SO4

0,145 moles of KMnO4----------in--------1000ml
x moles of KMnO4---------------in------------46ml
x = 0,00667 moles of KMnO4

according to the reaction:
2 moles of KMnO4------------------5 moles of H2O2
0,00667 moles of KMnO4----------------x
x = 0,01668 moles of H2O2

0,01668 moles of H2O2---------in-----------50ml
x moles of H2O2--------------------in----------1000ml
x = 0,334 mol/L H2O2

the balanced chemical equation for one neutralization reaction. In your equation, which reactant contributed the salt's positive ion? Which one contributes the salt's negative ion?

Answers

Answer:

See the answer below

Explanation:

A neutralization reaction is a reaction that involves acid and base with the production of salt and water as the end products. An example is as below:

HCl + NaOH --> NaCl + H2O

The salt produced here is NaCl. In solution, NaCl will ionize as:

$NaCl --> Na^+ + Cl^-$

Hence, the salt's positive ion (Na+) was contributed by the base (NaOH) while its negative ion (Cl-) was contributed by the acid (HCl).

Final answer:

In a neutralization reaction involving Ba(OH)2 and HNO3, the salt's positive ion comes from the base and the negative ion comes from the acid. In the molecular and net ionic equations, spectator ions, which are unaltered in the process, are included and excluded respectively.

Explanation:

In a neutralization reaction, an acid and a base react to produce water and a salt. Taking the provided reaction of Ba(OH)2 (aq) + 2HNO3(aq) → Ba(NO3)2(aq) + 2H₂O(1), the salt's positive ion (Ba²+), also known as the cation, comes from the the base, Ba(OH)2. The salt's negative ion (NO3-), also known as the anion, comes from the acid, HNO3. This reaction also represents a molecular equation where all reactants and products are represented as neutral substances. A net ionic equation would exclude the spectator ions, ions whose presence is required to maintain charge neutrality but are chemically and physically unaltered by the process.

Learn more about Neutralization Reactions here:

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YOU GET 55 POINTS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! I am not afraid to report you and email a worker. 1) Name the type of energy we been discussing that is not found in the simulation.

2) Why doesn't the sun make the wheel move?

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