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Vikentia [17]
3 years ago
13

The combination of the Adams of two or more elements is known as a/an?

Chemistry
1 answer:
Maslowich3 years ago
3 0
The combination of the of two or more elements is known as a compound. 

A homogenous mixture has a uniform composition all throughout. They are similar in terms of the amount of composition present in a solution. For example, oxygen is diatomic, O2. So oxygen is a compound because it has 2 elements combined in it. It is also a homogenous mixture if there are a lot of O2 gases present in let’s say tank. They only differ in the place where they are present. A compound is a representation of one molecule whereas a homogenous mixture is present in a a solution.

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At standard temperature and pressure, what volume does 0.5 mol of CO2 occupyAt standard temperature and pressure, what volume do
Zigmanuir [339]
<span>C. 11.2 L There are several different ways to solve this problem. You can look up the density of CO2 at STP and work from there with the molar mass of CO2, but the easiest is to assume that CO2 is an ideal gas and use the ideal gas properties. The key property is that a mole of an idea gas occupies 22.413962 liters. And since you have 0.5 moles, the gas you have will occupy half the volume which is 22.413962 * 0.5 = 11.20698 liters. And of the available choices, option "C. 11.2 L" is the closest match. Note: The figure of 22.413962 l/mole is using the pre 1982 definition of STP which is a temperature of 273.15 K and a pressure of 1 atmosphere (1.01325 x 10^5 pascals). Since 1982, the definition of STP has changed to a temperature of 273.15 K and a pressure of exactly 10^5 pascals. Because of this lower pressure, one mole of an ideal gas will have the higher volume of 22.710947 liters instead of the older value of 22.413962 liters.</span>
4 0
3 years ago
Question 21 of 25
RideAnS [48]

Answer:

7

Explanation:

7 0
3 years ago
The stability of an atom is determined by the: A strength of its gamma rays B ratio of neutrons to protons C number of electrons
Lyrx [107]

Your correct answer is (B) Ratio of neutrons to protons

Hope this helps! :)


6 0
3 years ago
Read 2 more answers
PLEASE HELP I WILL GIVE YOU 50 POINTS
Tamiku [17]
According to Raoult's law, Vapor pressure is directly proportional to the mole fraction of the solution. As 1.0 M CaF2 has least moles here, it has lowest vapor pressure.

In short, Your Answer would be Option D

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8 0
2 years ago
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What is the Golden Rule of Solubility? A. polar dissolves nonpolar. B. nonpolar dissolves polar. C. like dissolves unlike D. lik
DerKrebs [107]

Answer: D. like dissolves like

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The solubility of substances is governed by: Like dissolves like, which states that polar compounds are soluble in polar solvents and non polar compounds are soluble in non polar solvents.

Hydrocarbons are non polar in nature due to less difference between the electronegativities of carbon and hydrogen and thus are soluble in non polar solvents only.

Ionic compounds which are formed by elements with high electronegativity difference are polar in nature and thus dissolve in polar solvents.

Example: NaCl in water.

4 0
3 years ago
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