CHEMISTRY HIGH SCHOOL

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?

Answers

Answer 1
Answer:

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

HIGH SCHOOL

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

Answers

Answer:

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

HIGH SCHOOL

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?

Answers

Answer:

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

               

HIGH SCHOOL

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.

Answers

Answer:

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 =

HIGH SCHOOL

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?

Answers

The electromagnetic spectrum consists of the full range of known electromagnetic waves. And among them, X-rays has the wavelength of the region 1*10-11 to 1*10-8 meters.
Hope this helps.
Random Questions
Read the excerpt. Which phrase is a context clue that can help determine the meaning of the word demographic? Plenty of evidence exists about the hazards invRead the excerpt. Which phrase is a context clue that can help determine the meaning of the word demographic? Plenty of evidence exists about the hazards involved with smoking, leading experts to believe that quitting smoking at any point will result in improved health. But due to the addictive nature of smoking cigarettes, many people will find quitting to be difficult, if not totally impossible. Still, if a person cannot quit, he or she should consider the impact smoking may have on those around them, particularly young children and infants. The lungs, nervous system, and immune system of young children are still developing. This development places children as a demographic group at an even greater risk of being harmed by secondhand smoke than people in older age groups. Young children are more likely to develop lung problems, allergies, and other medical conditions when they are frequently in the presence of a smoker. Some evidence has even linked sudden infant death syndrome (SIDS) to secondhand smoking.olved with smoking, leading experts to believe that quitting smoking at any point will result in improved health. But due to the addictive nature of smoking cigarettes, many people will find quitting to be difficult, if not totally impossible. Still, if a person cannot quit, he or she should consider the impact smoking may have on those around them, particularly young children and infants. The lungs, nervous system, and immune system of young children are still developing. This development places children as a demographic group at an even greater risk of being harmed by secondhand smoke than people in older age groups. Young children are more likely to develop lung problems, allergies, and other medical conditions when they are frequently in the presence of a smoker. Some evidence has even linked sudden infant death syndrome (SIDS) to secondhand smoking.