Examine the following reaction: 5FeCl2(aq) + KMnO4(aq) + 8HCl(aq) → 5FeCl3(aq) + MnCl2(aq) + KCl(aq) + 4H2O(l) Which element has undergone reduction?

The reactants of the reaction will be solid gold (III) sulfide and hydrogen gas, while the products will be pure solid gold and hydrogen sulfide gas.

Reactants react together during reactions to arrive at products.

In this case, solid gold (III) sulfide and hydrogen gas react according to the following equation:

[tex]Au_2S_3(s) + 3 H_2 (g)-- > 2 Au(s) + 3H_2S(g)[/tex]

Reactants = solid gold (III) sulfide, hydrogen gas

Products: pure solid gold, hydrogen sulfide gas

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Answer:

you find your bmi by dividing your weight in kg by your height in Meters then square it

this is the formula kg/m2

Explanation:

Answer:

This is the answer to the question 0.1734

Explanation:

3.5/20.18

=0=1734

Answer:

b and d show electric force in action

Explanation:

Answer:

Answer: C3H8 + 5O2 → 3CO2 + 4H2O.

Explanation:

Answer:

May be its correct bro

Explanation:

take it easy

Answer:

They are big rocks that fly through space and are made of most commonly chondrite. When they collide, they collide with such force that they create craters on places like the moon.

Answer: Decreases

Explanation: Electronegativity decreases because the valence electrons are farther from the nucleus.

Answer:

The enthalpy change for the solution process [tex]\Delta H_{rxn}[/tex] = - 158.34 kJ/mol

Explanation:

Given that:

The mass of salt AX = 2.499 g

The mass of water = 135.3 g

The mass of the solution = ( 2.499 + 135.3 ) g = 137.799 g

The specific heat of salt solution s is known to be = 4.18 J/g° C

The change in temperature i.e. ΔT = 35.2 °C -  23.6 °C = 11.6 °C

Thus, the amount of heat raised is equal to the heat absorbed by the calorimeter.

∴

[tex]q_{reaction} = q_{solution}[/tex]

[tex]q_{reaction} = -ms_{solution} \Delta T[/tex]

[tex]q_{reaction} = -137.799 \ g \times 4.18 \dfrac{J}{g^0C}\times 11.6^0C[/tex]

[tex]q_{reaction} = - 6682 \ J[/tex]

[tex]q_{reaction} = - 6.682 \ kJ[/tex]

Recall that the mass of the salt = 2.499 g

The number of moles of the salt = [tex]2.499 \ g \times \dfrac{1 \ mol \ of \ AX}{59.1097 \ g}[/tex]

= 0.0422 mol of AX

Finally the enthalpy change, [tex]\Delta H_{rxn} = \dfrac{- 6.682 \ kJ}{ 0.0422 \ mol}[/tex]

= - 158.34 kJ/mol

The enthalpy change for the solution process [tex]\Delta H_{rxn}[/tex] = - 158.34 kJ/mol

Based on the reactants and products,

A precipitate is a solid product formed in when two solutions of salts react by double replacement.

The molecular equation of the reaction of Al(NO3)3 solution with a KOH solution is:

Al(NO3)3 + 3 KOH ---> Al(OH)3 + NaNO3

The complete ionic equation of the reaction of Al(NO3)3 solution with a KOH solution is:

Al3+ 3NO3- + 3 K+ 3OH- ---> Al(OH)3(s) + 3 Na+ 3 NO3+

The net ionic equation of the reaction of Al(NO3)3 solution with a KOH solution is:

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Answer:

The free neutron has a mass of 939,565,413.3 eV/c2, or 1.674927471×10−27 kg, or 1.00866491588 u. The neutron has a mean square radius of about 0.8×10−15 m, or 0.8 fm, and it is a spin-½ fermion.

Mass: 1.67492749804(95)×10−27 kg; 939.56542052(54) MeV/c2; 1.00866491588...

Composition: 1 up quark, 2 down quarks

Electric charge: 0 e; (−2±8)×10−22 e (experimental limits)

Magnetic polarizability: 3.7(20)×10−4 fm3

Answer:

22.8 L

Explanation:

Step 1: Given data

Step 2: Convert "T" to Kelvin

We will use the following expression.

K = °C + 273.15 = -6 + 273.15 = 267 K

Step 3: Calculate the volume of the gas

We will use the ideal gas equation.

P × V = n × R × T

V = n × R × T / P

V = 1.35 mol × (0.0821 atm.L/mol.K) × 267 K / 1.30 atm

V = 22.8 L

Answer:

A. More mass

C. Shorter distance between them

Explanation:

The two characteristics of a body experiencing greater gravitational force are that they have mass and a shorter distance between them.

This is conformity with Newton's law of universal gravitation.

The law states that "every object attracts one another with a force that is directly proportional to their masses and inversely proportional to the square of the distance between them".

This law implies that the more the mass of two bodies, the more the gravitational force of attraction. And that the shorter the square of the distance between them, the more the attraction.

Answer:

A. More Mass And

C. Shorter Distance Between Them

Explanation:

I Know This Is Already Answered But I'm Ok With It.

Answer:

32 g

Explanation:

the molar mass of oxygen is 16 g

if it's asking o2 then 64

Answer:

c

Explanation:

carbon dioxide oxygen cycle is basically photosinthesis

photosinthecis is where carbon dioxiode is turned to oxygen

Answer:

HCO3− + OH− ⇌ CO32− + H2O (fast)

Between pH values of 8 and 10, all the above equilibrium reactions are significant

Answer:

I say.... C.

Explanation:

Ionic compounds dissolve in water if the energy given off when the ions interact with water molecules compensates for the energy needed to break the ionic bonds in the solid and the energy required to separate the water molecules so that the ions can be inserted into solution.

Hope it helps!~ (Sorry if you get it wrong or I got it wrong-)

~The Confuzzeled homan

Answer:

Wt. Avg. Atomic Weight => 63.35457 amu

Explanation:

Given              Isotopic             %Abundance     fractional          Wt Avg

                  At. Mass (amu)                                  abundance      contribution                    

Cu-63              62.93                      69.09              0.6909            43.4783

Cu-65              64.9278                  20.0668        0.200668        20.0668

Wt Average of all isotopes = ∑Wt Avg Contributions

=  43.4783 amu + 20.0668 amu = 63.35457 amu

The solution for the arithmetic problems are​ is mathematically given as

23.27-72.058=-48.79

0.0853+0.05477+0.0002=0.14

35/0.0622=562.7

3400*0.00800=27.2

(43.1+27.250)*(22.514-18.0)​=317.56

Question Parameter(s):

23.27-72.058

0.0853+0.05477+0.0002

35/0.0622

3400*0.00800

(43.1+27.250)*(22.514-18.0)​

Generally,

23.27-72.058=-48.79

0.0853+0.05477+0.0002=0.14

35/0.0622=562.7

3400*0.00800=27.2

(43.1+27.250)*(22.514-18.0)​=317.56

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Answer:

Your answer is

D. Protons and Neutrons

Hope you have a great day!

Answer:

Protons and neutrons

Explanation:

Let's know some

Mass number of a element=No of protons+No of neutrons

Answer:

a) there are three transition states

b) there are two intermediates; carbocation and protonated alcohol

c) The first step in the forward direction

Explanation:

The acid-catalysed hydration of alkenes proceeds via a carbocation mechanism.

Three transition states can be identified in this mechanism for the acid-catalyzed hydration of alkenes.

The three transition states are derived from the three steps in the reaction sequence:

1) Protonation of the alkene by hydronium ion

2) Addition of water to the carbocation

3) loss of a proton to yield the alcohol

The first step involves the breaking of a pi bond, hence it is a slow step hence it has the smallest rate constant. The other two steps are fast steps.

After series of conversion from one unit to another, the number of gallons was found to be 12 litres

Given Data

Conversion from pounds to Gram

1 kg ---------2.204 lb

x kg ---------184.33 lb

x = 184.33/2.204

x = 83.634 kg

hence the mass in gram = 83.634*1000

mass in gram = 83634 g

Now let us find the volume

We know that density = mass/volume

volume = mass/density

volume = 83634/1.84

volume = 45453.26 cm^3

Convert cm^3 to litres

Volume in litres = 45453.26 /1000

Volume in litres = 45.45 Litres

Convert from Litres to Gallons

1 gallon = 3.79 L

x gallons =  45.45 L

x =  45.45/3.79

x gallons = 11.99 L

Approx = 12 Litres

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Answer:

True

Explanation:

Answer:

Yes

Explanation:

They are produced by heating metal salts eg. Aluminium it is used to produce silver and white flames and sparks.

HOPE IT HELPED

Answer:

According to mass and volume,  block density is 2 g/ml

Explanation:

Density is a measure, usually used in physics and chemistry, that relates the mass and volume of a solid or compound.

In general terms, the density is directly proportional to the mass, and inversely proportional to the volume, so increasing the mass will also increase the density.

The formula used to calculate the density is

ρ = [tex]\frac{m}{V}[/tex]

Therefore, according to the mass and density of the block

ρ = [tex]\frac{12}{6}[/tex] = 2g/ml

Being the density of the block equal to 2 g/ml.

The other options are not possible, because the values given do not correspond to the result of the equation.

Answer:

i think it would be

Explanation:

What is the unit rate of the better deal? (Number answers only.)

LaTeX: \frac{160\:miles}{5\:gallons}\:or\:\frac{315\:miles}{9\:gallons}160 m i l e s 5 g a l l o n s o r 315 m i l e s 9 g a l l o n s

The better deal has a unit rate of [m] miles per gallon.

Diphenhydramine medications should be taken by person who operate heavy machinery.

Medications refers to drugs or substances taken into the body to relieve of pains or symptoms of diseases.

Diphenhydramine is also called Benadryl and is antihistamine take to relieve symptoms of pains, allergy, hay fever, and the common cold symptoms like cough, sneezing, sore throat, cold , cattarh and so on. It is used to treat dizziness, nausea, vomiting and motion sickness. Diphenhydramine can be taken to relax the body and fall asleep.

Therefore, Diphenhydramine medications should be taken by person who operate heavy machinery because it will help relive pains and symptoms of cold which can be due to vigorous activity of operating heavy machinery.

Learn more about Diphenhydramine from the link below.

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Answer:

true

Explanation:

Heat travels from the hot cocoa in the cup to your hands. No energy is transferred. Heat is transferred from your hands to the hot cocoa in the cup.

If you are holding a really hot cup of hot chocolate, the heat from the mug will transfer to your hand is a true statement.

Heat transfer is any or all of a variety of processes that are thought to function as mechanisms to move entropy and energy from one place to another. Common names for the specific mechanisms include convection, heat radiation, and conduction (see thermal conduction).

The heat always transfers from a hot body to a cold body. The heat transfer from hot the cup to the hands until the temperature of the hand and the cup will be the same. There are three types of transfer of heat.

Therefore, it is true that the heat from the mug will travel to your hand if you are holding an extremely hot cup of hot chocolate.

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#SPJ2

Explanation:

k

ca

mg

zn

fe

sn

pb

h

cu

hg

ag

pt

au

the answer is calcium or magnesium

because that metal's activity will be higher than al and

lower than Na. so that the metal will be ca or mg.

Answer:

The molar mass of an element is the mass in grams of one mole (6.02 x 1023 particles) of the element.

Hope it help

Explanation:

good luck