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2 years ago

If a compound has two atoms of aluminum (AI) and three atoms of oxygen (O) what would its chemical formula look like?

Chemistry

1 answer:

liberstina [14]2 years ago

3 0

Answer:

Al₂O₃

Explanation:

that's the molecular formula for aluminum oxide/alumina.

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A sample of He gas (3.0 L) at 5.6 atm and 25°C was combined with 4.5 L of Ne gas at 3.6 atm and 25°C at constant temperature in

In-s [12.5K]

Answer:

3.6667

Explanation:

For helium gas:

Using Boyle's law

${P_1}\times {V_1}={P_2}\times {V_2}$

Given ,

V₁ = 3.0 L

V₂ = 9.0 L

P₁ = 5.6 atm

P₂ = ?

Using above equation as:

${P_1}\times {V_1}={P_2}\times {V_2}$

${5.6}\times {3.0}={P_2}\times {9.0} atm$

${P_2}=\frac {{5.6}\times {3.0}}{9.0} atm$

${P_1}=1.8667\ atm$

The pressure exerted by the helium gas in 9.0 L flask is 1.8667 atm

For Neon gas:

Using Boyle's law

${P_1}\times {V_1}={P_2}\times {V_2}$

Given ,

V₁ = 4.5 L

V₂ = 9.0 L

P₁ = 3.6 atm

P₂ = ?

Using above equation as:

${P_1}\times {V_1}={P_2}\times {V_2}$

${3.6}\times {4.5}={P_2}\times {9.0} atm$

${P_2}=\frac {{3.6}\times {4.5}}{9.0} atm$

${P_1}=1.8\ atm$

The pressure exerted by the neon gas in 9.0 L flask is 1.8 atm

Thus total pressure = 1.8667 + 1.8 atm = 3.6667 atm.

6 0

3 years ago

An ion from a given element has 24 protons and 22 electrons

musickatia [10]

Hi,

An ion with unequal number of protons and electrons haves a name. A name depends on whether there are more protons than electrons (CATION) or if there are more electrons than protons (ANION).

Hope this helps.
r3t40

8 0

3 years ago

Question 1

luda_lava [24]

Answer : The name of the given hydrocarbon is, pentane.

Explanation :

The basic rules for naming of organic compounds are :

First select the longest possible carbon chain.
For the number of carbon atom, we add prefix as 'meth' for 1, 'eth' for 2, 'prop' for 3, 'but' for 4, 'pent' for 5, 'hex' for 6, 'sept' for 7, 'oct' for 8, 'nona' for 9 and 'deca' for 10.
A suffix '-ane' is added at the end of the name of alkane.
If two of more similar alkyl groups are present, then the words 'di', 'tri' 'tetra' and so on are used to specify the number of times these alkyl groups appear in the chain.

In the given hydrocarbon, the longest possible carbon chain number is 5 that means we add prefix 'pent' and suffix '-ane'. So, the name of given hydrocarbon will be, pentane.

Hence, the correct option is, pentane.

4 0

3 years ago

A balloonist begins a trip in a helium-filled balloon in early morning when the temperature is 15°C. By mid-afternoon, the tempe

german

The relationship between the answers to parts (d) and (e) is given that the system doesn't have constant pressure, ΔH(enthalpy change) and Q(heat transferred) can be stated to be equal to one another.

A thermodynamic system's enthalpy, which is one of its properties, is calculated by adding the system's internal energy to the product of its pressure and volume. It is a state function that is frequently employed in measurements of chemical, biological, and physical systems at constant pressure, which the sizable surrounding environment conveniently provides.

Q (Heat) is referred to as energy in motion. On the other hand, enthalpy (ΔH) represents the system's condition and total heat content. The change in internal energy is equal to the heat transmitted to, less the work done by, the system, according to the law of energy conservation. The enthalpy change(ΔH) is precisely equal to the heat transferred(Q) to the system if the sole work performed is a change in volume at constant pressure.

To know more about enthalpy refer to: brainly.com/question/13996238

#SPJ4

5 0

1 year ago

Why do elements in a group on the periodic table have similar chemical properties?

NARA [144]

Do elements in a group on the periodic table have similar chemical properties because their atoms have the same number of electrons

A. same number of outermost electrons

6 0

3 years ago