CHEMISTRY HIGH SCHOOL

Gases and liquids will both expand to fill their container true or faulse

Answers

Answer 1
Answer: gasses do not liquid can because it is not a gas
Answer 2
Answer: Gasses do expand because they have no absolute volume
Liquids do not expand but will fill a container because they have no set shape just a set volume

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Is cloth a good insulator

What’s the missing word

Answers

Answer:

crystallized by heating the salt solution

Salt solutions can be crystallized to give solid salts.

Which of the following is untrue concerning a reversible reaction?a. All reversible reactions will reach equilibrium.
b. The reaction always spends equal time in the forward and reverse direction.
c. There is equal processing for the concentration of reactants and products.
d. The reaction could spend more time in the reverse direction than in the forward direction.

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The statement that is untrue concerning a reversible reaction is The reaction always spends equal time in the forward and reverse direction. The answer is letter B. The reset of the statements are true concerning the reversible reaction.

What is the best way to compare a concentrated solution to a dilute solution, given the same volume of solution?The concentrated solution has less solute than the dilute solution.
a) The concentrated solution has the same amount of solute as the dilute solution.
b) The concentrated solution has more solute than the dilute solution.
c) The concentrated solution has a different amount of solute than the dilute solution.
d) The concentrated solution has the same amount of solute as the dilute solution.

Answers

The correct answer is B. Given a same volume of a solution, the concentrated solution has more solute than the dilute solution. For instance, we are given two NaOH solutions having a volume of 1L one has a concentration of 1M and the other is 2M. The latter has more solute since it has 2 moles of NaOH while the other only has 1 mole.

Answer: b) The concentrated solution has more solute than the dilute solution.

Explanation:-

Binary Solution is a homogeneous mixture of two components called as solute and solvent. Solute is the component which is present in smaller proportion and is solid for solid in liquid solution and solvent is the component which is present in larger proportion and is liquid for solid in liquid solution.

Concentrated solution is one in which there is more amount of solid.

Dilute solution is one in which there is more amount of liquid.

Which atomic model was proposed as a result of J. J. Thomson’s work?

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It should be the plum pudding model. c:

A chemical system that resists changes in pH and prevents large swings in the pH is called __________. a) A base b) An acid c) An anion d) A buffer

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Answer:

Explanation:

okay so first add two to four and the ten

Are blue stars young or old? How can you tell?.

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Astronomers measure the brightness of stars using light-years. This means that the light we see now left in that years ago, traveling through space in that distance at kilometer per second.

A star is born, it radiates energy for a long time, toward the end it expands, it may or may not explode, and then it dies. It vary in sizes, masses and surface temperature range. The colors of stars reflect their surface temperature. Their relative brightness is expressed in a scale of six magnitudes. The brightest the stars are first-magnitude stars, while the dimmest are sixth-magnitude stars.
 
The lower the number, the brighter the star.

For example:
                      Star color                        Surface Temperature
                     Blue-white                         around 25 000 K & higher
                     white                                  around 10 000 K
                     yellow                                around 7 000 K
                     Red                                    around 5 000 K & lower
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