CHEMISTRY HIGH SCHOOL

Which if the following questions can be answered by science?​

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Answer 1
Answer:

Answer:

Need the choices before i can give answers thanks

Explanation:

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How much energy (in Joules) would it take to warm 3.11 grams of gold by 7.7 oC(specific heat capacity of gold = 0.130 J/g °C)

Answers

Answer:

It would take 3.11 J to warm 3.11 grams of gold

Explanation:

Step 1: Data given

Mass of gold = 3.11 grams

Temperature rise = 7.7 °C

Specific heat capacity of gold = 0.130 J/g°C

Step 2: Calculate the amount of energy

Q = m*c*ΔT

⇒ Q = the energy required (in Joules) = TO BE DETERMINED

⇒ m = the mass of gold = 3.11 grams

⇒ c = the specific heat of gold = 0.130 J/g°C

⇒ ΔT = The temperature rise = 7.7 °C

Q = 3.11 g * 0.130 J/g°C * 7.7 °C

Q = 3.11 J

It would take 3.11 J to warm 3.11 grams of gold

Which phase of matter consists of particles that are held together but have the ability to flow past each other?

Answers

Explanation:

In solids, molecules are held together due to strong intermolecular force of attraction between them. These molecules do not move past each other as they are fixed at their position. As a result, solids have definite shape and volume.

In liquids, molecules are less tightly held as a result the molecules are able to move and hence they slide past each other. Liquids do not have fixed shape and volume.

In gases, molecules are held by weak Vander waal forces. Therefore, they move rapidly from one place to another with more collisions.

Thus, we can conclude that liquid is the phase of matter which consists of particles that are held together but have the ability to flow past each other.
liquid making it the correct answer

If 2a=3b and a=6 then b=

Answers

then b is 4

2a=3b since a=6

2x6=3b

12=3b

b=12/3

b=4

Answer:

b=4

Explanation:

2a=3b

2a=2*6

2*6=12

2a=12

12=3b

12/3=4

b=4

How many protons, neutrons, and electrons could an isotope of this atom contain?

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Explanation:

isotope are atom of the same elements with the same number of protons, electron and different number of neutrons.

Which substance can act as an arrhenius base in an aqueous solution

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The substance that can act as an Arrhenius base in aqueous solution is sodium hydroxide since NaOH dissociates in water giving the sodium ions and the hydroxide ions. An Arrhenius base is a substance that is characterized by forming hydroxide ions in an aqueous solution.

Which of these laboratory techniques is best to separate from a liquid to recover the liquid

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It depends on what you are separating from the liquid. If it is a solid you can just filter it or put it in a centrifuge. If it is a dissolved solvent you might need to use something like chromatography. I am not very sure though. I hope this helps. Let me know if anything is unclear.
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