please Help ASASP i need help

Answer:

ionic bond

Explanation:

Answer:

Explanation:

The following equation describes the oxidation of ethanol to aceticacid by potassium permanganate:

3C2H5OH +4KMnO4-->3HC2H3O2 +4MnO2 + 4KOH + H2O

5.0 g of ethanol and an excess of aqueous KMnO4 arereacted, and 5.9 g HC2H3O2 result.What is the percent yield?

a. 100%

b. 91%

c. 67%

d. 30%

e. 5.9 g HC2H3O2 is impossible since it represcents more than a100% yield.

The percent yield of acetic acid is 91.9%

From the question,

We are to determine the percent yield of the acetic acid

To determine the percent yield of the acetic acid, we will calculate the theoretical yield first.

The balanced chemical equation for the reaction is

3C₂H₅OH + 4KMnO₄ → 3HC₂H₃O₂ + 4MnO₂ + 4KOH + H₂O

This means

3 moles of ethanol reacts with 4 moles of potassium permanganate to produce 3 moles of acetic acid

Now, we will determine the number of moles of ethanol that reacted

From the question

Mass of ethanol that reacted = 5.00 g

Molar mass of ethanol = 46.07 g/mol

Using the formula

[tex]Number\ of\ moles= \frac{Mass}{Molar\ mass}[/tex]

∴ Number of moles of ethanol = [tex]\frac{5.00}{46.07}[/tex]

Number of moles of ethanol that reacted = 0.10853 mole

Now,

From the balanced chemical equation,

3 moles of ethanol reacts with 4 moles of potassium permanganate to produce 3 moles of acetic acid

Then,

0.10853 mole of ethanol reacts with the excess potassium permanganate to produce 0.10853 mole of acetic acid

∴ 0.10853 mole of acetic acid will be produced

Now, for the mass of acetic acid that would be produced

From the formula

Mass = Number of moles × Molar mass

From the question

Molar mass of acetic acid = 60.05 g/mol

∴ Mass of acetic acid that will be produced = 0.10853 × 60.05

Mass of acetic acid that will be produced = 6.5172 g

This is the theoretical yield of acetic acid

Now, for the percent yield

[tex]Percent\ yield = \frac{Actual\ yield}{Theoretical\ yield} \times 100\%[/tex]

From the question,

Actual yield = 5.99 g

∴ [tex]Percent\ yield = \frac{5.99}{6.5172} \times 100\%[/tex]

[tex]Percent\ yield = \frac{599}{6.5172} \%[/tex]

Percent yield = 91.9106 %

Percent yield ≅ 91.9%

Hence, the percent yield of acetic acid is 91.9%

Learn more here: https://brainly.com/question/19655772

Answer:

CO2 should be 50.88 g

Explanation:

CH4 + 2 O2  -->  CO2 + 2 H2O

First, find the moles of CH4:

Molar Mass of CH4 (formular mass):

12+1*4=16 g/mol (actually just use the atomic mass in your periodic table to add them up)

Then we can find how many moles in CH4 = 18.5÷16=1.15625 mol

As we know 1 mole of methane(CH4) makes 1 mole of CO2, so if 1.15625 moles of methane is reacted, 1.15625 moles of CO2 will be made.

So the moles of CO2 is 1.15625 moles.

Calculate the mass of CO2:

Molecular mass: 12+16*2=44 g/mol

Mass=44*1.15625=50.88 g (cor. to 2 d.p.)

Answer:

a

Explanation:

It increases the reaction rate by lowering the activation energy for a reaction

Answer:

D because it is in a fixed position

Explanation:

Answer:

Boiling point, temperature at which the pressure exerted by the surroundings upon a liquid is equaled by the pressure exerted by the vapour of the liquid; under this condition, addition of heat results in the transformation of the liquid into its vapour without raising the temperature. Water at its boiling point.

Explanation:

g00gle worls

Answer: An ion with fewer electrons than its neutral atom is called a(n) cation. The charge of an ion with more electrons than its neutral atom is. negative.Name an ionic compound by the cation followed by the anion. ... Covalent compounds are formed when two or more nonmetal atoms bond by sharing valence electrons. Valence electrons are the outermost electrons of an atom.

Explanation:

Answer:

Extract DNA from the fertilizer to identify its origin.

Explanation:

Barnes find out that fertilizer was used in the explosive material. Barnes should now identify the origin of this type of fertilizer so that its root can be determined. When the origin is unable to be determined then Barnes should keep the traces of the fertilizer and try to identify the manufacturer.

Answer:

Track down where the fertilizer was sold and who bought it

Explanation:

I, myself, took this exam.

Answer: Q=104525J

Explanation: where Q is the heat energy required to heat a mass, m , though a change in temperature of Δ T and c is the heat capacity of the material (found in books!). Typical units are Q in Joules or J , m in k g and Δ T is in either Kelvin, K , or degrees Celsius o C . The units of c depend on the other units used but J / k g o C is typical.

Answer:

H2O + SO3 → H2SO4

this is the answer for

this question

Answer:

The energy transferred is known as kinetic energy, and it depends on the mass and speed achieved.

This equation reveals that the kinetic energy of an object is directly proportional to the square of its speed.

KE = 0.5 • m • v2

where m = mass of object

v = speed of object

That means that for a twofold increase in speed, the kinetic energy will increase by a factor of four. For a threefold increase in speed, the kinetic energy will increase by a factor of nine.

Answer:

the natural and man made thing which we can see around us is known as environment. not enviorement.

Answer:

Environment means anything that surrounds us. It can be living (biotic) or non-living (abiotic) things. It includes physical, chemical and other natural forces. ... In the environment there are different interactions between animals, plants, soil, water, and other living and non-living things.

Answer:

It's A because its almost like a personality its just a sexuallity / gender

Answer:

half of its genetic material from each parent.

Explanation:

Answer:

C

Explanation:

Alcoholism is the inability to control drinking due to both a physical and emotional dependence on alcohol.

Answer:

the same

Explanation:

due to the law of conservation of mass, the mass will not change

Answer: The mass will be the same it will not be able to change.

Explanation: due to the law of conservation of mass, the mass will not change telling us that the mass and the grams or whatever it was saying on there will stay exactly no change. so the 250 grams will not change.

Answer:

2.9 * 10^23 atoms Au

Explanation:

(95 g Au) * (1 mol Au/196.96657) * (6.02 * 10^23 atoms Au / 1 Mol Au)

2.9 * 10^23 atoms Au

Answer:

An electric current is created

An electric current is created when a wire moves between the poles of a magnet.

So, option A is correct.

learn about electric current,

https://brainly.com/question/2264542

#SPJ2

Answer:

Explanation:

Seismographs can detect quakes that are too small for humans to feel. During an earthquake, ground-shaking seismic waves radiate outward from the quake source, called the epicenter. Different types of seismic waves travel at different speeds and through different parts of the Earth during a quake.

Explanation:

cells, dna, chromosomes, body systems

Answer: B. a ball being held

Explanation: while your holding the ball the potential energy is greater than the kinetic

Explanation:

Elements contained. C. H

% by mass. 10.6. 4.4

/ each by its a.m. 10.6/12.0. 4.4/1.0

amount. 0.88. 4.4

/ each by the smaller. 0.88/0.88. 4.4/0.88

ratio of amount. 1.00. 5.00

simplest whole number ratio= 1 : 5

The empirical formula=CH5

Answer:

0.0389757845886336

Explanation:

Answer:

well it depends are they carnivors or eating soup or are they sucking on co2

Explanation:

all of them have a good day

Answer: the answer is selecting all three ( solids, liquids, gasses) (elements, compounds, and mixtures) (living things, and nonlinear things)

Explanation: I got it right:)

Answer:

24.47 L

Explanation:

Using the general gas law equation:

PV = nRT

Where;

P = pressure (atm)

V = volume (L)

n = number of moles (mol)

R = 0.0821 Latm/molK

T = temperature (K)

According to the provided information in this question,

P = 1.0 atm

V = ?

n = 1 mol

T = 25°C = 25 + 273 = 298K

Using PV = nRT

V = nRT ÷ P

V = 1 × 0.0821 × 298 ÷ 1

V = 24.465 ÷ 1

V = 24.465

V = 24.47 L

Answer:is D.the wave theory of light

Explanation:

cuz i got it wrong :( but the answer is correct :3

Answer:

D) wave theory of light

Explanation:

Answer: a. BaO

Explanation:

For formation of a neutral ionic compound, the charges on cation and anion must be balanced. The cation is formed by loss of electrons by metals and anions are formed by gain of electrons by non metals.

Here element barium is having an oxidation state of +2 called as [tex]Ba^{2+}[/tex] cation and [tex]O^{2-}[/tex] is an anion with oxidation state of -2. Thus they combine and their oxidation states are exchanged and written in simplest whole number ratios to give neutral [tex]BaO[/tex]

Answer:

Mercury chloride's(HgCI2) empirical formula is HgCI.

Explanation: