6. 220 mL of oxygen gas was collected over water. The total pressure of oxygen gas plus water vapor was 745.8 mmHg at 25.0°C. What is the pressure, in mmHg, exerted by only the oxygen gas? See Water Vapor Table. 7. A sample of nitrogen gas is collected over water at 20°C and a pressure of 1.00 atm. The volume of the collected gas is 250.0 L. What is the partial pressure of the nitrogen gas? (At 20°C, the vapor pressure of water is 17.5 torr) Dalton's Law: Ptotal = P; nitrogen + Pater Solving this problem: Pnitrogen = Ptotal - Pwater 8. A sample of hydrogen gas is collected over water at 22°C. The pressure of the resultant mixture is 765torr. What is the pressure that is exerted by the dry hydrogen alone?

Q: The element bromine forms a(n) _______cationanion with the charge . The symbol for this ion is ,…

A: Element is form by small atoms by combination of them Br form anion with -1charge.and it have 36…

Q: Which of the following is a characteristic of all nonmetals ?   Group of answer choices:   a. always…

A: Based on their properties elements can be classified into three types  Metals  Non metals…

Q: Which of the following contain(s) atoms? . • a. heat . b. energy • c. dust . d. light .e. all of the…

A: Atoms are the fundamental building blocks of matter, composing every tangible substance we…

Q: The density of carbon lellacinun tetrachloride? 3.3 x 1023 atoms b. 5.4 x 1023 atoms c. 1.4 x 1024…

A: Number of moles of a compound = number of moleculesavagadro number Number of moles of a compound =…

Q: How many sig figs are in the following numbers

A: All non-zeros are significant  Leading zeros are non-significant whereas trailing zeros are…

Q: 1. a) List the five main ideas of the particle theory. 1. b) Use the particle theory to explain why…

A: a)  The five main ideas of particle theory are - 1. All matter consists of extremely small…

Q: 12. An unknown element has the following properties: conducts heat and electricity, dull, brittle.…

A:

Q: Use a model to explain how subatomic particles interact to cause ONE of the following periodic…

A: Various atomic models were proposed from time to time to explain the structure of an atom and how…

Q: What would you multiply "grams of argon" by to get the units "atoms of argon" ? ((number) 9 Ar…

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Q: The element aluminum forms a a with the charge

A: The element aluminium forms a cation with the charge +3. The symbol for this ion is Al+3 with the…

Q: Carbon atom example: What is its atomic number? What is its atomic mass? How many electronic does…

A: Carbon is a Chemical element with symbol 'C' . It belongs to the group 14 of periodic table.

Q: Mention the existing types of distillation

A: Distillation is a process in which the liquid mixture is purified and separated into the pure…

Q: How many atoms of sulfur are there in 0.0120mol of S, molecules?

A: 1 mol = 6.22 × 1023 atoms  1 mol S8 = 8 mol S atoms

Q: Negatively charged atoms are called cations. A. True B. False

A: Ions are the species that carries charge. Ions can be an atom or a group of atoms carrying positive…

Q: A positively charged particle in the nucleus of an atom is    A. an electron    B. a neutron…

A: A positively charged particle in the nucleus of an atom is given below

Q: 8. What is the formula mass of a compound that forms between the fictitious element Marvinium and…

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A: Answer

States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates). 

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.