How many moles of ethane gas, C2H6(g), will occupy 15.0 L at 30 degrees Celsius and 5.0 atm?

Answer:

1: false

2: B

Explanation:

I do not know the 3rd one

Answer:

cup...................

Answer

oh you again?

Explanation:

Answer:

68

Explanation:

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Answer: 720 g

Explanation:

To solve this we must be knowing each and every concept related to mole. Therefore, shivani measures out 6.0 moles of epsom salt (MgSO[tex]_4[/tex]) to put her bath. 1,566g MgSO[tex]_4[/tex] went in the bath.

A mole is merely a measuring unit. In reality, it is one of its International System of Units' seven foundation units. When current units are insufficient, new units are created.

Chemical reactions frequently occur at levels where employing grams would be inappropriate, but using absolute quantities of atoms/molecules/ions would also be misleading.

For all practical reasons, one mole of a substance in grams is nearly equal to 1 molecule for the compound per daltons.

Mathematically,

number of mole =given mass ÷ molar mass

number of mole=6.0 moles

molar mass of epsom= 261.47g/mol

substituting all the given values in the above equation, we get

6.0 moles =mass of epsom ÷ 261.47g/mol

mass of epsom =1,566g

Therefore, 1,566g  MgSO[tex]_4[/tex] went in the bath.

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Given

Reaction

C+02 = CO2

Required

The equilibrium constant

Solution

The equilibrium constant is the ratio of concentration or pressure between the product and the reactant with each reaction coefficient raised  

The equilibrium constant is based on the concentration (Kc) in a reaction  

pA + qB -----> mC + nD  

[tex]\large {\boxed {\bold {Kc ~ = ~ \frac {[C] ^ m [D] ^ n} {[A] ^ p [B] ^ q}}}}[/tex]

So for the reaction :

C+O₂ ⇔ CO₂

[tex]\tt Kc=\dfrac{[CO_2]}{[C][O_2]}[/tex]

Answer:

54.66 liters

Explanation:

First of all, remember this. 1 mole equals 22.4 liters.

Second of all, to show your work use dimensional analysis.

Write 2.44 moles and then put moles on the bottom and liters on top.

2.44 moles of O * 22.4 liters / 1 mol of O

Moles will cancel out.

2.44 x 22.4 = 54.656

Usually I would have used sig figs. But the question said to round your answer to two digits after the decimal point.

54.656 rounds to the hundreths place.

So 54.656 = 54.66

All in all, the final answer is 54.66 liters(don't forget the units).

Hope it helped!

Answer:

i think iron

Explanation:

i not sure with my ans

Answer:

3) Compound 1 is ionic, and compound 2 is molecular

Explanation:

Compound-1 is an ionic compound while Compound-2 is a molecular compound. Option 3 is correct.

Ionic Compound:

They are formed when an atom donates its electron to another atom. This results in one positive and one negative ion.

Hence, it is a very strong bond. These compounds have a very high melting and boiling point. They are very good electric conductors in the aqueous solution.

For example- NaCl.

Molecular compounds:

They are compounds that are made up of discrete molecular units. For example- [tex]\bold {H_2O}[/tex]

They have very weak intermolecular bonds hence have low boiling and melting point and do not conduct electricity.

SInce Compound-1 has higher MP and BP and Compound-2 has low melting and boiling point.

Therefore, Compound-1 is an ionic compound while Compound-2 is a molecular compound.

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Answer:

Hey okau

Explanation:

X/100% = part / whole

X/100% = 1.62 / (1.62 + 4.81) = 0.252

X = 25.2%

Answer:

D

Explanation:

The volume of carbon monoxide is produced when 1.20 L of dicyanoacetylene reacts is

Stoichiometry of any reaction tells about rhe relative amount of substance present before and after the completion of any chemical reaction.

Given balanced chemical reaction between dicyanoacetylene and ozone to produce carbon monoxide and nitrogen is:

3C₄N₂ + 4O₃ → 12CO + 3N₂

From the stoichiometry of the reaction it is clear that:
3 liters of C₄N₂ =  produces 12 liters of CO

1.20 liters of C₄N₂ =  produces 12/3×1.20=4.8 liters of CO

Hence option (d) is correct i.e. 4.8 liters.

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Answer:

The temperature at which rhenium becomes superconducting is -271.6 ºC.

Explanation:

We can convert the temperature given in Kelvin, which is an absolute scale, into degrees Celsius. which is a relative scale, by a simple algebraic translation, that is:

[tex]T_{C} = T_{K} - 273[/tex] (1)

Where:

[tex]T_{C}[/tex] - Temperature, measured in degrees Celsius.

[tex]T_{K}[/tex] - Temperature, measured in Kelvins.

If we know that [tex]T_{K} = 1.4\,K[/tex], then the temperature given in degrees Celsius is:

[tex]T_{C} = 1.4\,K-273[/tex]

[tex]T_{C} = -271.6\,^{\circ}C[/tex]

The temperature at which rhenium becomes superconducting is -271.6 ºC.

Answer:

The waves travel in a direction parallel to direction of the vibration of the medium

The waves travel in a direction parallel to direction of the vibration of the medium

A mechanical wave is defined as an oscillation of matter which is responsible for energy transfer via  medium.

The propagation of  wave is limited by the medium of transmission, the oscillating material which revolve around a fixed point with little translational motion.

A surface wave which is an example of  mechanical wave that propagate  along the interface of two different media in physics. other common examples are Gravity waves on the surface of liquids, ocean waves.

Surface wave can be propagated in a slow way through Earth material and are generally lower in frequency than body waves.

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Answer:

1st one

Explanation:

Answer:

Estoy triste, tuve que regalar a mi perro

Stock solutions contain a standardized concentration of the solute in a solution. To prepare 50 mL of solution with a ratio of 1:1000 solution, 5 gms of the drug will be required.

Dilution is the property of the solution with a less amount of solute concentration than the stock solution. A dilute solution is prepared by the addition of more solvent.

The addition of the solvent in a solution decreases the molar concentration which leads to dilution.

The ratio of 1:1000 means that 1 gm of the drug is present in 1000 mL (1L) of solution.

1000 mL = 1 gm × 500 mL × X gm

Here, the X represents the 0.5 gm of drug dissolved in 500 mL.

The amount of drug used is calculated as,

5 mL ÷ 50 ml = 0.5 g ÷ X g

X = 0.5 × 50 ÷ 5

= 5 gm

Therefore, 5 gm of the drug is required to prepare 50 mL of solution.

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Answer:

cause of the sun rotation

Explanation:

Answer:

The world is tilting on an edge that creates seasons.

Explanation:

And that's why different parts of the have different climates.

Answer:

4.935×10-1

Explanation:

Take away the 0

Answer:

i think it would be c

Explanation:

sorry if it is wrong

Answer:

2NaClO₃ -> 2NaCl + 3O₂

Explanation:

The number of atoms in the reactants has to equal the number of atoms in the products.

Hope that helps.

Answer:

Freezing points for water with freezing mixtures based on salt and ice: Ammonium Nitrate - Chrushed Ice or Snow in Water 1 part Ammonium Nitrate - 0.94 parts Ice/water : temperature -4 o C 1 part Ammonium Nitrate - 1.20 parts Ice/water : temperature -14 o C

Explanation:

Answer:

YIKES. a bit late. Answers include 1, 2, 3

Explanation:

Answer:

1.593 moles

Explanation:

Therefore, 1.593 moles are equal to 89.23 g of calcium oxide.

Answer:

9.64 × 10²³ molecules

Explanation:

Given data:

Mass of calcium oxide = 89.23 g

Number of molecules = ?

Solution:

First of all we will calculate the number of moles of calcium oxide.

Number of moles = mass/molar mass

Number of moles = 89.23 g/ 56.1 g/mol

Number of moles = 1.6 mol

Number of molecules;

1 mole contain 6.022 × 10²³ molecules

1.6 mol × 6.022 × 10²³ molecules / 1mol

9.64 × 10²³ molecules

The number 6.022 × 10²³ is called Avogadro number.

Answer:

The manner in which objects will move is determined by the answer to this question. Unbalanced forces will cause objects to change their state of motion

Explanation:

Since these two forces are of equal magnitude and in opposite directions, they balance each other.

Answer:

balance force are those force whose resultant force is zero and unbalanced force are those whose resultant are non zero

Answer:

Gravitational force between two objects depends on: a. The weight of the objects c. The mass of each object b. The distance between the objects d. Both b and c Please select the best answer from the choices provided A B C D

✓d

Answer:

B. Be, Mg, Ca, Sr

Explanation:

Be, Mg, Ca, Sr are parts of the alkaline Earth metal family/group. So they are the second most reactive elements following behind alkali metals. Furthermore, Be, Mg, Ca, Sr all have 2 valence electrons that lose them to form cations. They have low melting points, low boiling points, can conduct electricity, have high malleability and ductility.

Hope it helped!

Answer: 0.671614483912211

Explanation: A mole is 6.02214076×1023 (also known as the Avogadro number) I hope this helps!