HELP ASAP WHICH ONE IS THE ANSWE A OR B OR C OR D ???? ! !!!

Answer:

Decision making

Explanation:

A person who thinks before choosing is a person who makes decisions.

The limiting reactant would be the ammonium sulfide and the amount of the excess manganese (IV) fluoride would be 1.96 grams

From the equation of the reaction:

[tex]MnF_4(aq)+2(NH_4)_2S(aq)- > MnS_2(s)+4NH_4F(aq)[/tex]

The mole ratio of [tex]MnF_4[/tex] to [tex](NH_4)_2S[/tex] is 1:2

Mole of 70 g [tex]MnF_4[/tex] = 70/130.93

                                 = 0.53 moles

Mole of 70 g  [tex](NH_4)_2S[/tex] = 70/68.154

                                       = 1.03 moles

Equivalent mole of   [tex](NH_4)_2S[/tex] = 0.53 x 2

                                                = 1.06 moles

Thus,   [tex](NH_4)_2S[/tex] seems to be limiting while [tex]MnF_4[/tex] is in excess.

Excess [tex]MnF_4[/tex] = 0.53 - 1.03/2

                          = 0.015 mole

Mass of 0.015 mole [tex]MnF_4[/tex] = 0.015 x 130.93

                                             = 1.96 grams

More on limiting reactants can be found here: https://brainly.com/question/14225536

Answer:

Explanation:

1. There are fire and flashes at the top of an active volcano. No fire nor flashes for inactive volcano.

2. Smoke and debris come off an active volcano. No smoke nor debris from inactive volcano.

3. Magma flows from top of active volcano. No magma from inactive volcano.

4. There can be snow on top of inactive volcano. Active volcano is too hot for that.

5. There are plants and other wild lives around an inactive volcano.

Answer:

The mass of 1 mole LiOH has been 24 g. Thus, option D is correct.

The mass of a compound present in a mole of sample has been equivalent to the molar mass of the compound. The molar mass of the compound has been the sum of the constituent in a formula unit.

Explanation:

pls mark brainless i mean brainliest!

Answer: 24 g

Explanation:

Answer:which pictures?

Explanation:show the pictures first

answer: time

Explanation:

well the clouds are moving and the time is different or the seasons also make the background different

Answer:

Because chemists need to think outside the box for what they do, in other words, "science is not always black and white" which means science has color to it or many different aspects some of those which are not yet discovered and needs critical thinking chemists to figure out and discover.

Explanation:

(this was all in my own words and not actually cut and Paiste ○|￣|_ =3)

Answer:

3

Explanation:

That's the answer

I hope it helps

Answer:

0.52 mole

Explanation:

How many moles of Al2O3 will be formed when 27 grams of Al reacts with O2? Hence 0.78 mole of oygen react with Aluminium to give 0.52 mole of Al2O3.

Answer:

Li: 2

H2O: 2

LiOH: 2

H2: 1

Explanation:

Good luck

Based on the concentration of the solutions, the increase in volume is as follows:

Osmosis is the movement of water molecules from a region of low solute concentration to a region of high solute concentration through a semipermeable membrane.

The movement of water molecules in the solution pairs is as follows:

Therefore, the increase in volume depends on the concentration ofvthe solutions.

Learn more about osmosis at: https://brainly.com/question/2625460

The volume of the balloon is approximately 2652 liters.

Let suppose that flammable hydrogen behaves ideally. GIven the molar mass ([tex]M[/tex]), in kilograms per kilomole, and mass of the gas ([tex]m[/tex]), in kilograms. The volume occupied by the gas ([tex]V[/tex]), in cubic centimeters, is found by the equation of state for ideal gases:

[tex]V = \frac{m\cdot R_{u}\cdot T}{P\cdot M}[/tex]   (1)

Where:

If we know that [tex]m = 0.239\,kg[/tex], [tex]R_{u} = 8.314\,\frac{kPa\cdot m^{3}}{kmol\cdot K}[/tex], [tex]T = 273.15\,K[/tex], [tex]P = 101.325\,kPa[/tex] and [tex]M = 2.02\,\frac{kg}{kmol}[/tex], then the volume of the balloon is:

[tex]V = \frac{(0.239\,kg)\cdot \left(8.314\,\frac{kPa\cdot m^{3}}{kmol\cdot K} \right)\cdot (273.15\,K)}{\left(101.325\,kPa\right)\cdot \left(2.02\,\frac{kg}{kmol} \right)}[/tex]

[tex]V = 2.652\,m^{3}[/tex] ([tex]2652\,L[/tex])

The volume of the balloon is approximately 2652 liters. [tex]\blacksquare[/tex]

To learn more on ideal gases, we kindly invite to check this verified question: https://brainly.com/question/8711877

Answer:

recognition, intrusion and distraction

Explanation:

Answer:

9.16895 grams

Explanation:

cuz u have number of moles of silver which = 0.085

so u must know that molar mass of silver =107.87 g/mol

so the mass of silver = number of moles × molar mass =0.085×107.87= 9.16895 grams

Answer:

B. Because the planet travels slowly when it is far away from the sun

Answer:

The Earth's rotation means that we experience an apparent force known as the Coriolis force. This deflects the direction of the wind to the right in the northern hemisphere and to the left in the southern hemisphere.

Explanation:

Answer:

4

Explanation:

2+2=4

[tex]\Large \text{1)}[/tex]

[tex]\textbf{Use the formula and substitute the values}[/tex]

[tex]\displaystyle 0.3\ mol/L = \frac{n \ mol}{10 \times 10^{-3}\ L}[/tex]

[tex]\textbf{Solve for the number of moles}[/tex]

[tex]n = 0.003\ mol[/tex]

[tex]\textbf{Calculate final volume }[/tex]

[tex]40+10=50\ mL[/tex]

[tex]\textbf{Number of moles remains same. Solve for concentration}[/tex]

[tex]\displaystyle C=\frac{0.003\ mol}{50 \times 10^{-3}\ L} =0.06\ mol/L[/tex]

[tex]\Large \text{2)}[/tex]

[tex]\displaystyle DF=\frac{V_f}{V_i}[/tex]

[tex]\displaystyle DF=\frac{50}{10}=5[/tex]

Answer:

D

Explanation:

Heat sometimes gets "lost" when work is done

A, Scientists will use the structure of existing animals as a model :)

Answer:

Scientists will use the structure of existing animal as a model.

Explanation:

-lukelaws

please mark me brainliest I need one more please!!!

Answer:

The propane chemical structure, or chemical formula, is three carbon atoms branched with eight hydrogen atoms I.e C3H8

Answer:

432m/s

Explanation:

The rms speed (u) is related to the temperature (T) and molecular weight (M) by the expression

u=

M

3RT

u=

40×10

−3

kg/mol

3×8.314J/molK×(27+273.15)K

u=432.2m/s

Hence, the rms speed is 432.2 m/s

hope this is helpful

The concentration of the solution reduces and the number of moles of solute isn't affected.

Data;

1. When the solution is diluted, the concentration changes and this time, the concentration reduces.

Using dilution formula

[tex]c_1 v_1 = c_2 v_2\\12 * 50 = c_2 * 200\\c_2 = \frac{600}{200} \\c_2 = 3M[/tex]

The concentration of the solution reduces.

2. The number of moles remains the same.

When a solution is diluted, the number of moles remains the same because there's no change in the mass of the solute.

Learn more on concentration of a solution here;

https://brainly.com/question/2201903

Moles be n

[tex]\\ \rm\Rrightarrow PV=nRT[/tex]

[tex]\\ \rm\Rrightarrow n=\dfrac{PV}{RT}[/tex]

[tex]\\ \rm\Rrightarrow n=\dfrac{1.28(27.6)}{0.0821(302)}[/tex]

[tex]\\ \rm\Rrightarrow n=\dfrac{35.3}{24.8}[/tex]

[tex]\\ \rm\Rrightarrow n=1.42mol[/tex]

The number of moles of methane gas occupies in the given volume and pressure is 1.426 moles. It can be calculated using ideal gas law.

Ideal gas law relates the parameters temperature, pressure, volume and number of moles of  a gas by the equation given below:

PV = nRT.

Where, R is the universal gas constant equal to 0.082 L atm /(K .mol). This law is a combination of Boyle's law, Charles's law and Avogadro's law.

It is given that the pressure and volume of the gas is 1.28 atm and 27.6 liter respectively. Temperature is 29 degree celsius or 302 kelvin. Using these values the number of moles of methane gas is calculated as follows:

PV = nRT

n = PV/RT

Number of moles of methane n = (1.28 atm × 27.6 L) / ( 0.082 L atm /(K .mol) × 302 K )

= 1.426 moles.

Hence, the number of moles of methane gas in the given system is 1.426 moles.

To find more about ideal gases, refer the link below:

https://brainly.com/question/12281987

#SPJ2

they simply don't have the same characteristics

Explanation:

An acid produces a hydroxonium ion as positive which is part of the reason why they are corrosive

Bases are less corrosive which is why they can neutralize an acid to give salt and water

Answer:The colour and distribution of the organism's biochromes

Explanation:

The colour and distribution of the organism's biochromes (pigments), particularly the relative location of differently coloured areas; the shape, posture, position, and movement of the organism; and the quality and quantity of light striking the organism

Answer:

I would go with

B. Surface water at the poles is dense because of low temperatures and high salinity.

i could be wrong tho.

Explanation:

Answer:

c. they have the same number of valence electrons