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irina1246 [14]
3 years ago
12

Did all of the potential energy transfer to kinetic energy?

Chemistry
1 answer:
sergij07 [2.7K]3 years ago
3 0

Answer:

Gravitational Potential Energy to Kinetic Energy. When an object with Gravitational Potential Energy starts to fall, its G PE is transferred into Kinetic Energy .

Explanation:

The further the object falls, the less G PE it has and the more K E it has. When the object hits the ground, all of its G PE has been transferred into K E.

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What is the enthalpy of formation (?H?f) of NaHCO3(s) from its constituent elements.
vova2212 [387]

Answer:

Enthalpy of formation = -947.68KJ/mol

Explanation:

Enthalpy of formation is the heat change when one mole of a substance is formed from its element in its standard states and in standard conditions of temperature and pressure. it may be positive or negative, if positive, it is an endothermic reaction where the heat content of the product is greater than that of the reactants, and if negative, it is exothermic reaction - where the heat content of the reactants is greater than the products. the enthalpy of formation is measured in KiloJoule/Moles (KJ/Mole).

From the value of the enthalpy of formation of NaHCO3, it shows that the reaction is exothermic, that is the formation of NaHCO3 from its constituents elements. As such, the heat content of the reactants is greater than the products.

The step by step explanation is shown in the attachment.

7 0
3 years ago
Read 2 more answers
If you have 40 grams of potassium nitrate in 100 grams of water at 20 C:
anygoal [31]

Answer:

Explanation:The final homogenous solution, after cooling it to 40°C, will contain 47 g of potassium sulfate disolved in 150 g of water, so you can calculate the amount disolved per 100 g of water in this way:

[47 g of solute / 150 g of water] * 100 g of g of water = 31.33 grams of solute in 100 g of water.

So, when you compare with the solutiblity, 15 g of solute / 100 g of water, you realize that the solution has more solute dissolved with means that it is supersaturated.

To make a saturated solution, 15 grams of potassium sulfate would dissolve in 100 g of water.

Read more on Brainly.com - brainly.com/question/5143785#readmore

7 0
3 years ago
What is the voltage for the nonspontaneous reaction between silver (Ag) and copper (Cu) and their ions?
gayaneshka [121]
For an non spontaneous reaction between silver (Ag) and copper (Cu) and their ions, Cu is the oxidizing agent while Ag+ is the reducing agent,
The following reactions will take place;
Anode Cu = Cu+2 + 2e-   E= +0.34 volts
Cathode; Ag+ + e = Ag    E = +0.80 volts
The net reaction will be Cu + 2Ag+ = Cu+2 + 2Ag
Thus, the voltage will be
  = +0.80 - (+0.34)
5 0
3 years ago
The molecular mass of a substance refers to the:
ololo11 [35]

Answer:

A

Explanation:

it's the sum of the masses of all the atoms in the molecule

please like and Mark as brainliest

3 0
3 years ago
Which description identifies the correct charge of each atomic particle?
SVETLANKA909090 [29]
The main atomic partilces are electrons, protons and neutrons.

Electrons are around the nuclei and have negative charge.

Protons and neutrons are in the nulei of the atoms. Protons are positive and their charge balance the charge of the electrons, so the atom is neutral.

Neutrons have no charge.

So, the answer is:

the charge of electrons is negative, the charge of the protons is positive and the neutrons have no charge.
3 0
2 years ago
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