# A gas has a volume of 590 mL at a temperature of –55.0 C. What volume will the gas occupy at 30.0 C?

To solve this we assume that the gas is an ideal gas. Then, we can use the ideal gas equation which is expressed as PV = nRT. At a constant pressure and number of moles of the gas the ratio T/V is equal to some constant. At another set of condition of temperature, the constant is still the same. Calculations are as follows:

T1 / V1 = T2 / V2

V2 = T2 x V1 / T1

V2 = 303.15 x 590 / 218.15

V2 = 819.89 mL

## Related Questions

A substance has a density of 4.5gmL. What is this in kgL? Report your answer with two significant figures.

4.5 kg/L

Explanation:

Density is 4.5g/mL and it means that in 1 mL of volume, the mass contained is 4.5 g.

Let's make a rule of three

1L = 1000 mL

1 mL has a mass of 4.5 g

1000 mL would have 4500 g

Our new density would be 4500 g/L, but we may convert the g to kg

1 kg / 1000 g . 4500 g = 4.5 kg

In conclusion 4.5 g/mL = 4.5 kg/L

An elemental analysis of the acid indicates that it is composed of 5.89% H , 70.6% C , and 23.5% O by mass. What is its molecular formula?

Empirical formula of acid is = C₄H₄O

In order to find the molecular formula we must have molar mass of compound. Because,

Molecular formula = n × (empirical formula)

n = molar mass of compound / empirical formula mass

Explanation:

No. of gram atoms of carbon = 70.6 g /12 g/mol = 5.88 g atom

No. of gram atoms of hydrogen =5.89 g / 1.008 g/mol = 5.84 g atom

No. of gram atoms of oxygen = 23.5 g / 16 g/mol = 1.47 g atom

Atomic ratio:

C :H :O               5.88/ 1.47    :   5.84/ 1.47   :  1.47 /1.47

C :H :O                4 : 4 : 1

empirical formula of acid is = C₄H₄O

Molecular formula:

Molecular formula = n × (empirical formula)

n = molar mass of compound / empirical formula mass

empirical formula mass= 4 × 12 + 4 × 1.008  + 1 × 16

empirical formula mass= 48+ 4.032 +16 = 68.032

Consider the reaction: 8H2S(g)+4O2(g)→8H2O(g)+S8(g). Δ[H2S]/Δt = -0.033M/s. Find Δ[O2]/Δt. Δ[H2O]/Δt. Δ[S8]/Δt. Find the rate of the reaction.

Rate of the reaction = 0.004125 M/s

Explanation:

For a general reaction,

Rate of the reaction =

So, for the given reaction,

Rate of the reaction =

Calculation of [ΔO2]/Δt

Calculation of [ΔH2O]/Δt

Calculation of [ΔS8]/Δt

Calculation of Rate of Reaction

Rate of the reaction =

Rate of the reaction =

The wavelength of a given region of the electromagnetic spectrum ranges from 1 x 10-11 - 1 x 10-8 meters. Which waves are found in this region?