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Which gas property in the chart above is extensive and cannot be used to identify the gas?



Specific heat of 0.98 J/g·°C

Density is 0.5 g/mL

Volume of 12.7 mL

Boils at -223°C

Each compound and its chemical formula will be as follows:

chromium(VI) oxide -  [tex]CrO_3[/tex].

chromium(IV) oxide -  [tex]CrO_2[/tex].

chromium(III) oxide -  [tex]Cr_2O_3[/tex].

chromium(II) oxide - [tex]CrO[/tex].

Chromium being a transition metal means that it can assume variable oxidation states in different compounds. Oxygen has a valence of 2.

Thus, when deriving the formula of a compound formed by chromium and oxygen, each atom will take the mole that is equivalent to the oxidation number of the other.

For chromium(VI) oxide, chromium is taking 6 as the oxidation number. Thus the formula of the compound will be [tex]Cr_2O_6[/tex] or [tex]CrO_3[/tex].

For chromium(IV) oxide, chromium takes 4 as the oxidation number. Thus the formula is either  [tex]Cr_2O_4[/tex] or [tex]CrO_2[/tex].

For chromium(III) oxide, chromium takes 3. The formula becomes [tex]Cr_2O_3[/tex].

For chromium(II) oxide, chromium takes 2. The formula is either [tex]Cr_2O_2[/tex] or [tex]CrO[/tex].

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Answer:

By heating or freezing the water

Explanation: Hope this helps

Answer:

efflorescence is the migration of a salt to the surface of a porous material, where it forms a coating.

Answer: Efflorescence is a crystalline or powdery deposit of salts often visible on the surface of concrete, brick, stucco, or natural stone surfaces. It occurs when water leaves behind salt deposits on the masonry surface.

Explanation:  NO EXPLANTATION SORRY!

Answer:

Hexaflourine Pentaiodide?

Explanation:

f = flourine (6 = hexa)

i = iodine (5 = penta) + ide

Answer:

an be found by determining the electronic configurations of elements. Thereafter the number of electrons in the outermost shell gives the total number of valence electrons in that element.

the gas mixture is at STP, what is the partial pressure of the argon?

(A) 152 torr (B) 228 torr (C) 380. torr (D) 760. torr

2.) Compared to the average kinetic energy of 1 mole of water at 0 oC, the average kinetic energy

of 1 mole of water at 298 K is

(A) the same, and the number of molecules is the same

(B) the same, but the number of molecules is greater

(C) greater, and the number of molecules is greater

(D) greater, but the number of molecules is the same

3.) If the pressure on a given mass of gas in a closed system is increased and the temperature

remains constant, the volume of the gas will

(A) decrease (B) increase (C) remain the same

4.) Which gas has approximately the same density as C2H6 at STP?

(A) NO (B) NH3 (C) H2S (D) SO2

5.) At a temperature of 273 K, a 400. milliliter gas sample has a pressure of 760. millimeters of

mercury. If the pressure is changed to 380. millimeters of mercury, at which temperature will

this gas sample have a volume of 551 milliliters?

(A) 100 K (B) 188 K (C) 273 K (D) 546 K

Get the answers to these questions

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Answer:

A. 0.089

Explanation:

Hope this helps :)

Answer:

B: Oganism is gonna be the right answer for this one hope I helped

Answer:

i think is c,im not sure

Explanation:

Answer:

Molarity = 0.08 M

Explanation:

Given data:

Mass of copper sulfate = 3.8 g

Volume of water = 250 cm³  (250/1000 = 0.25 L)

Concentration of solution = ?

Solution:

Number of moles of copper sulfate:

Number of moles = mass/molar mass

Number of moles = 3.8 g/ 159.6 g/mol

Number of moles = 0.02 mol

Concentration:

Molarity = Number of moles / volume in L

By putting values,

Molarity = 0.02 mol / 0.25 L

Molarity = 0.08 mol/L

Molarity = 0.08 M

Answer:

precipitate

that is the answer hope that helps

The volume of unreacted Oxygen = 1.25 L = 1.25 dm³ = 1250 cm³

Given

Combustion of propane

3.6 L CO2

7.25 L O2

Required

The volume of unreacted oxygen

Solution

Reaction

C₃H₈ + 5O₂ ⇒ 3CO₂ + 4H₂O

Avogadro's :  

In the same T,P and V, the gas contains the same number of molecules  

So the ratio of gas volume will be equal to the ratio of gas moles  

Vol O₂ = 5/3 x vol CO2 = 5/3 x 3.6 = 6 L

The unreacted : 7.25 - 6 = 1.25 L

The magnesium is the anode of a magnesium and zinc galvanic cell.

The magnesium is the anode means the site of oxidation, where magnesium ions flow into solution. Here the electrons leave the electrode and flow through the voltmeter as they move to the zinc cathode.

While on the other hand, zinc is the cathode i.e. the site of reduction, where zinc ions flow onto the electrode in order to pick up electrons so we can conclude that magnesium is the anode of a magnesium and zinc galvanic cell.

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Answer:ANSWER IS MG(s)

Explanation:

Answer:

do we have to answer all of them I'm new to this

Answer:

2(mass no of magnisium)+mass of barium

plug in the values

There are 37 grams of hydrogen present in the 100 g sample given that compound is composed of 37% hydrogen and 63% oxygen.

MASS OF AN ELEMENT:

According to this question, a compound is said to be composed of 37% hydrogen and 63% oxygen.

This means that in 100g of the compound, its elemental constituents are as follows:

This means that hydrogen will contain 37g in 100g of the given compound.

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Answer:

Kinetic energy is always 12mv2 , which in this case, is 3.2 J. Explanation: 12mv2=12(0.1 )(8.0)2=3.2J.

Answer:

Using the formula cards again, add the coefficient of 2 in front of the formula and have them recalculate the number of each element and the total number of atoms in each element.

Explanation:

The number of elements in a compound is counted by identifying and counting the chemical symbols represented in the chemical formula

A compound is a substance that is a mixture of more than one elements.

Compounds are made of two or more elements. These elements are represented by their symbols. These symbols can be identified and the number of elements represented by these symbols are counted.

For example, in the compound [tex]H_2O[/tex]:

H represents Hydrogen

O represents Oxygen

The elements in Water ( [tex]H_2O[/tex]) are Hydrogen and Oxygen

Therefore, the number of elements in  [tex]H_2O[/tex] is 2

Also in, [tex]NaCl[/tex]

The elements are Sodium(Na) and Chlorine(Cl)

There are two elements in NaCl

Hence, the number of elements in a compound is counted by identifying and counting the chemical symbols represented in the chemical formula

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Answer:

Bird eating worm: The bird gains energy from eating its proteins.

Plant recieving sunlight: The plant gains energy from the sunlight and transfers it into sugar and energy for it to continue its cycle.

Light bulb attached to battery: The lightbulb gains electricity and power from the battery until it runs out completely.

Answer: Motion, providing a burst of power that can move a specific part of the device.

Explanation: Hope this helps

Answer:

D > C > B> A

Explanation:

i solved this on study island

Answer:

6.6666666667 feet per second I believe

Answer:

4.5 miles per hour.

Explanation:

30* 2= 400 feet in 1 min

24,000 per hour

5280 feet is 1 mile.

Answer:

Rutherford atomic model of atom

Explanation:

lord lutherford

Answer:+2 -2

Explanation:

Answer:

ionic

Explanation:

i just know i ❤️❤️]

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.

Answer:

the first energy level is closest to nuclear the second energy level is a little farther away than the first

There are various kind of elements that are present in periodic table. Some elements are harmful, some are radioactive, some are noble gases. Therefore, The energy level where an electron is located, is shown by the period on the periodic table

Periodic table is a table in which we find elements with properties like metals, non metals, metalloids and radioactive element arranges in increasing atomic number.

The energy level where an electron is located, is shown by the period number on the periodic table. The number of the period represents the number of orbits or shells. Shells represents the energy levels of an element.

Therefore, the energy level where an electron is located, is shown by the period on the periodic table.

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Answer:

The movement of air through Earth's -- or any planet's -- atmosphere is called wind, and the main cause of Earth's winds is uneven heating by the sun. This uneven heating causes changes of atmospheric pressure, and winds blow from regions with high pressure to those with low pressure.

Explanation:

Answer:

The answer is 2, 3, 6, and 1

Explanation:

Write down the coefficients of 2, 3, 6, and 1. Try them out and then multiply the atoms together.

2AlBr3 = Al2Br6

3K2SO4 = K6(SO4)3

6KBr = K6Br6

1Al2(SO4)3 = Al2(SO4)3

Al2Br6 + K6(SO4)3 = K6Br6 + Al2(SO4)3

All the reactants and products have the same number of atoms/molecules in each element. Therefore, this equation is balanced.

So the final answer is 2, 3, 6, and 1.

Hope it helped!