CHEMISTRY HIGH SCHOOL

calculate the molar mass of a gas if 3.30 grams of the has occupies 660 ml at 735mmHg and 27 degrees C

Answers

Answer 1
Answer:

The molar mass of the gas that occupies the given volume is 127.4 g/mol.

The given parameters;

  • mass of the gas, m = 3.3 g
  • volume of the gas, V = 660 ml = 0.66l
  • pressure of the gas, P = 735 mmHg
  • temperature of the gas, T = 27 ⁰C = 273 + 27 = 300 K

The number of moles of the gas is calculated form ideal gas law as follows;

PV = nRT

where;

  • n is the number of moles
  • R is the gas constant = 62.36 L.mmHg/mol.K

n = (PV)/(RT) \n\nn = (0.66 * 735)/(62.36 * 300) \n\nn = 0.0259 \ mole

The molar mass of the gas is calculated as follows;

no. \ mole = (reacting \ mass)/(molar \ mass) \n\nmolar \ mass = (reacting \ mass)/(no.\ mole) \n\nmolar \ mass =(3.3)/(0.0259) \n\nmolar \ mass = 127.4 \ g/mol

Thus, the molar mass of the gas that occupies the given volume is 127.4 g/mol.

Learn more here:brainly.com/question/24542515
Answer 2
Answer: Use the ideal gas law PV = nRT and manipulate it to solve for n. PV/RT = n.Convert to SI units:660ml -> 0.660 L27 degrees -> 300 KLeave Pressure as isUse 62.36368 for R becuase you are using mmHg for Pressure.Now plug into the equation to get about 0.025928 mols. Divide the 3.30 grams by the mols to get about 127 g/mol.

Related Questions

What is the force equation? A. F = ma B. F = md C. F = m/a D. F = m/d
Argon-39 has a half-life of 269 years. How long will it take for 52.5 g of a 60.0 g sample to decay to its daughter isotope?
What is the half-life of the substance as determined by the graph?​
As the pressure on the surface of a liquid decreases, the temperature at which the liquid will boil(1) decreases(2) increases(3) remains the same
adiation is spontaneously emitted from hydrogen-3 nuclei, but radiation is not spontaneously emitted from hydrogen-1 nuclei or hydrogen-2 nuclei. Which hydrogen nuclei are stable

Thewhich are represented by a single uppercase letter, or represented by an uppercase letter followed

by a lowercase letter. This tells you the types of elements in the compound.

Answers

Answer:

Elements

Explanation:

The   elements which are represented by a single uppercase letter, or represented by an uppercase letter followed  by a lowercase letter. This tells you the types of elements in the compound.

Elements are one of the simplest chemical substances that cannot be decomposed in a chemical reaction or by any chemical means. They are made up of small indivisible particles called atoms, all having the same number of protons.

Final answer:

Chemical symbols which can be single uppercase or one uppercase followed by a lowercase letter, are used in Chemistry to represent elements. They are used in the composition of compounds. For example, 'H' for Hydrogen and 'Ca' for Calcium.

Explanation:

In Chemistry, elements are represented by one or two letters. The first letter is always uppercase and the second letter, if present, is lowercase. These are known as chemical symbols and they correspond to the elements in the Periodic Table. For instance, the symbol for Hydrogen is H, and for Calcium it's Ca. These symbols are used to denote elements in chemical compounds. For example, water (H2O) is a compound consisting of Hydrogen and Oxygen.

Learn more about Chemical Symbols here:

brainly.com/question/11189571

#SPJ3

Where would the gravitational attraction between the earth and moon be the weakest

Answers

The gravitational attraction will be the weakest on the side of the Earth that is opposite the Moon. 

Water is called the “universal solvent.” Which statement best explains this description with respect to ionic compounds?

Answers

Answer is: C. Water can dissociate many ionic compounds through ion-dipole interactions.

For example, dissociation of potassium bromide: KBr(aq) → K⁺(aq) + Br⁻(aq).

Some ionic compounds cannot dissociate in water, for example calcium sulfate (CaSO₄), silver chloride (AgCl), lead(II)-carbonate (PbCO₃).

An ion-dipole is electrostatic interaction between a charged ion (cations and anions) and a molecule that has a dipole (in this example water).

Dipole is a separation of positive and negative charges. In water, hydrogen has positive and oxygen has negative charge.
It is called the universal solvent because it can dissolve a wide range of solutes. Generally speaking, water is good at dissolving ions and polar molecules, but poor at dissolving nonpolar molecules. Water molecules are polar, with partial positive charges on the hydrogens, a partial negative charge on the oxygen, and a bent overall structure. The unequal charge distribution in a water molecule allows the interaction with ions.

Are there any historical significance to Rosalind Franklin's contribution?

Answers

Rosalind Franklin made a crucial contribution to the discovery of the double helix ... Indeed, Franklin is in the shadows of science history, for while her work on DNA ... The two were to work together on finding the structure of DNA, but their ... No. This article has been posted to your Facebook page via Scitable LearnCast.

Is coffee a solution, colloid, or suspension?

Answers

Coffee is considered a colloid.

What is a colloid

A colloid is a type of mixture in which particles are dispersed throughout a medium, but they are not dissolved or settled. In the case of coffee, it is made up of small particles of coffee grounds suspended in water. These particles are not completely dissolved in the water but remain dispersed throughout, giving coffee its characteristic appearance and texture.

While some components of coffee, such as caffeine and other soluble compounds, are dissolved in the water, the presence of suspended coffee particles qualifies it as a colloid.

Read more on colloid here brainly.com/question/3003333

#SPJ6
Short Answer: Coffee are not solution but it is colloid and suspension.

Explanation:

The cream is a foam of air suspended in an emulsion composed of vegetable oils and water. Perhaps you decide to have an orange juice, rather than a coffee - that, too, is a colloid. It is a sol, a suspension of solid particles of pulp in an aqueous continuous phase.

Which of the following bodily organs or systems can be affected by ionizing radiation? Glands,
Eyes,
Genitals,
Nervous system,
Gastrointestinal system?

Answers

The correct answer is the fourth option. The nervous system is the system in the body which can be affected by ionizing radiation. Exposure to this kind of radiation may lead to changes in motor function or neurological disorders.
Other Questions
Exactly 15.0 g of a substance can be dissolved in 150.0 g of water what is the solubility of the substance in grams per 100 g of water
What would happen if more of the sun's heat became trapped in earth's atmosphere,and less heat was released into space
HELP ME with THIS I am time i have a little bit of time and still have more questions !!! CHEMISTRY!!
Which best describes the particles in a gas when the temperature rises from 23 °C to 46 °C? A. The average energy doubles. B. The average energy increases. C. The average velocity of the particles increases by a factor of sqrt 2 . D. The average energy remains constant but the velocity of some particles increases