answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ira Lisetskai
4 months ago
10

Hydrogen gas has a density of 0.090 g/L, and at normal pressure and -1.72 C one mole of it takes up 22.4 L. How would you calcul

ate the moles in 900. g of hydrogen gas? Set up the math. But DONT DO ANY OF IT. Just leave your answer as a math expression.
Chemistry
2 answers:
Tems11 [2.7K]4 months ago
8 0

Respuesta:

n = \frac{900}{0.090*22.4}

Explicación:

Dado que 1 mol de gas hidrógeno ocupa 22.4 L, se puede calcular la cantidad de moles de hidrógeno (n) a partir del volumen (V):

1 mol ----- 22.4 L

n ------ V

Aplicando una simple regla de tres:

22.4n = V

n = V/22.4

El volumen se encuentra al dividir la masa (m) por la densidad (d)

V = m/d

<pas>

n = \frac{m}{22.4*d}

Se tiene una masa de 900 g y una densidad de 0.090 g/L:

n = \frac{900}{0.090*22.4}

</pas>
Anarel [2.9K]4 months ago
6 0

Answer:

n= \frac{m}{ \rho }* \frac{1 mol}{22.4 L}

Explanation:

Assuming all calculations occur at standard pressure and a temperature of -1.72°C :

n= \frac{m}{ \rho }* \frac{1 mol}{22.4 L}

Where

n is the number of moles of hydrogen

n is the mass of hydrogen

\rho is the density of hydrogen

You might be interested in
A 0.0200 M NaCl solution was formed when 38.0 grams of NaCl was dissolved in enough water. What was the total volume of the solu
Tems11 [2777]

Start by determining the number of moles, which is obtained by dividing 38 grams by the molar mass of 58.43 g/mol. This calculation yields 0.65 moles. The concentration is calculated by dividing the number of moles by the volume in liters. Using this formula, we can derive the total volume by dividing the number of moles by the concentration. Thus, 0.65 moles divided by 0.02M (mol/L) results in a total volume of 32.5 L.

4 0
3 months ago
Read 2 more answers
Water's surface tension and heat storage capacity are accounted for by its ______. A) orbitals B) weight C) hydrogen bonds D) ma
lorasvet [2795]
The answer is C: hydrogen bonds. Explanation: The surface tension and the capacity for heat storage in water are due to its hydrogen bonds. Water molecules have a strong attraction to one another through hydrogen bonding. These bonds are continuously forming and breaking within water molecules. The result of this hydrogen bonding is surface tension, which allows water to have a greater capacity for heat retention. Consequently, during the night, the temperature on Earth drops much faster than it does for water, as water gradually releases heat, helping maintain a moderate atmospheric temperature at night.
5 0
3 months ago
An alkene with the molecular formula C8H16 undergoes ozonolysis to yield a mixture of (CH3)2C=O and (CH3)3CCHO. The alkene is:
eduard [2782]
The ozonolysis of 2,4,4-trimethyl-2-pentene produces a combination of (CH_{3})_{2}C=O and (CH_{3})_{3}CHO

Explanation: In ozonolysis (where a reducing agent like Zn is involved during hydrolysis), a pi bond cleaves to generate ketones or aldehydes.

Ketones arise from the double bond's disubstituted side, whereas aldehydes come from the monosubstituted side of the same bond.

Notably, ozonolysis comprises two steps: (1) the formation of an ozonide, followed by (2) the hydrolysis of the ozonide.

Hydrolysis can transpire with or without a reducing agent. When it occurs without a reducing agent, carboxylic acid, carbon dioxide, or ketones can be produced.

In this case, 2,4,4-trimethyl-2-pentene yields a mixture of (CH_{3})_{2}C=O and (CH_{3})_{3}CHO

The reaction process is illustrated below.

8 0
3 months ago
A 0.307-g sample of an unknown triprotic acid is titrated to the third equivalence point using 35.2 ml of 0.106 m naoh. calculat
Alekssandra [3086]
A triprotic acid is a type of Arrhenius acid that has the ability to donate three protons per molecule during dissociation in aqueous solutions. Thus, the chemical reaction, as outlined in the question, at the third equivalence point, can be expressed as: H3R + 3NaOH ⇒ Na3R + 3H2O, where R denotes the counter ion of the triprotic acid. Consequently, the ratio of reacted acid to base at this point is 1:3.
The moles of NaOH are calculated as 0.106M*0.0352L = 0.003731 mole. Therefore, the amount of H3R is 0.003731mole/3=0.001244mole.
Subsequently, the molar mass of the acid can be determined: 0.307g/0.001244mole=247 g/mol.
6 0
2 months ago
Other questions:
  • The [H3O+] in a solution is increased to twice the original concentration. Which change could occur in the pH? 2.0 to 4.0 1.7 to
    14·2 answers
  • A laboratory analysis of an unknown sample yields 74.0% carbon, 7.4% hydrogen, 8.6% nitrogen, and 10.0% oxygen. What is the empi
    14·1 answer
  • For the chemical reaction HCN ( aq ) + KOH ( aq ) ⟶ H 2 O ( l ) + KCN ( aq ) HCN(aq)+KOH(aq)⟶H2O(l)+KCN(aq) write the net ionic
    8·1 answer
  • Simon has collected three samples from the coral reef where he observes marine life. He must determine whether each one is a pur
    13·2 answers
  • Determine the number of bonding electrons and the number of nonbonding electrons in the structure of cs2.
    14·2 answers
  • How many molecules of PF5 are found in 39.5 grams of PF5?
    8·1 answer
  • If the same amount of heat is added to 50.0 g samples of each of the metals which are all at the same temperature, which metal w
    11·1 answer
  • A tank containing both HF and HBr gases developed a leak. The ratio of the rate of effusion of HF to the rate of effusion of HBr
    10·2 answers
  • One way in which elements differ from each other is the structure of the electron cloud in each element’s atoms. In an electron
    5·2 answers
  • The properties of two elements are listed below. Element Atomic radius (pm) Ionic radius (pm) First ionization energy (kJ/mol) E
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!