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3 years ago

What is the formula of Potential energy?

Chemistry

2 answers:

kaheart [24]3 years ago

6 0

PE =1/2mv^2

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lidiya [134]3 years ago

6 0

As we know that,

$(Potential \: Energy \: = \: \: mgh)$

$Potential \: Energy \: \alpha \: \: m$

Here, potential energy is directly proportional to the mass.

$Potential \: Energy \: \alpha \: \: g$

Here, potential energy is directly proportional to the gravity of the earth.

$Potential \: Energy \: \alpha \: \: h$

Here, potential energy is directly proportional to the height.

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When equal volumes of 0.5 M HCl and 0.5 M Ca(OH)2 are mixed, the resulting solution is

Mademuasel [1]

The concentration of mixed solution = 0.5 M

<h3> Further explanation </h3>

Given

0.5 M HCl

0.5 M Ca(OH)₂

Required

The concentration

Solution

Molarity from 2 solutions :

Vm Mm = V₁. M₁ + V₂. M₂

m = mixed solution

V = volume

M = molarity

V = mixed volume

1 = solution 1

2 = solution 2

Vm = V₁+V₂

Equal volumes⇒V₁=V₂, and Vm = 2V, then equation becomes :

2V.Mm = V(M₁+M₂)

2V.Mm = V(0.5+0.5)

Mm=0.5 M

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3 years ago

The final electron acceptor of the electron transport chain that functions in aerobic oxidative phosphorylation is The final ele

MissTica

Answer:

The final electron acceptor of the electron transport chain is oxygen

Explanation:

Four electrons gotten from cytochrome c are involved in the conversion of a molecule of oxygen (O2) to two molecules of water (H2O). This final electron transfer occurs in complex IV. Complex IV, also known as cytochrome c oxidase, facilitates the the use of four protons from the matrix of the mitochondrion, in the production of water molecules while pumping four protons to the intermembrane space of the mitochondrion.

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3 years ago

A scientist measures the standard enthalpy change for the following reaction to be -17.2 kJ : Ca(OH)2(aq) 2 HCl(aq)CaCl2(s)

elixir [45]

Answer: $\Delta H^{0}=-173.72$ kJ/mol

Explanation: Enthalpy Change is the amount of energy in a reaction - absorption or release - at a constant pressure. So, Standard Enthalpy of Formation is how much energy is necessary to form a substance.

The standard enthalpy of formation of HCl is calculated as:

$\Delta ^{0}=\Sigma H_{products}-\Sigma H_{reactants}$

$Ca(OH)_{2}_{(aq)}+2HCl_{(aq)}$ → $CaCl_{2}_{(s)}+2H_{2}O_{(l)}$

Standard Enthalpy of formation for the other compounds are:

Calcium Hydroxide: $\Delta H^{0}=$ -1002.82 kJ/mol

Calcium chloride: $\Delta H^{0}=$ -795.8 kJ/mol

Water: $\Delta H^{0}=$ -285.83 kJ/mol

Enthalpy is given per mol, which means we have to multiply by the mols in the balanced equation.

Calculating:

$-17.2=[-795.8+2(285.85)]-[-1002.82+2\Delta H]$

$-17.2=-1367.46+1002.82-2\Delta H$

$2\Delta H=17.2-364.64$

$\Delta H=-173.72$

So, the standard enthalpy of formation of HCl is -173.72 kJ/mol

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3 years ago

Why is there no set path that a scientific inquiry must follow

Marina CMI [18]

Due to the variables that each inquiry has, Scientific inquiry follows a path of questioning and testing a hypothesis, however this changes in response to specific details.

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3 years ago

Read 2 more answers

Balance the following chemical equation.

victus00 [196]

Answer:

a) C4H6+2H2=C4H10

b) 4Na+CF4=4NaF+C

c) 2Na+2NH3=2NaNH2+H2

d) 2H202=2H2O+O2

Explanation:

Try and make sure there is the same number of reactants as products

3 0

3 years ago

What is the formula of Potential energy?​

What is the formula of Potential energy?