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pychu [463]
2 years ago
15

Give an example of an object that has potential energy

Chemistry
1 answer:
fredd [130]2 years ago
4 0

Answer:

A book on a shelf

Explanation:

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a 15.0 kg chunk of ice falls off the top of an iceberg if the chunk of ice Falls 8.00 to the surface of the water what is the ki
kvv77 [185]
When we can get the Kinetic energy from this formula KE= 1/2 M V^2and we can get the potential energy from this formula PE =  M g H
we can set that the kinetic energy at the bottom of the fall equals the potential energy at the top so, KE = PE
1/2 MV^2 = M g H
1/2 V^2 = g H
when V is the velocity, g is an acceleration of gravitational force (9.8 m^2/s) and H is the height of the fall (8 m).
∴ v^2 = 2 * 9.8 * 8 = 156.8
∴ v= √156.8 = 12.5 m/s
8 0
2 years ago
When titrating 50.0 mL of 0.10 M H2SO4 with 0.10 M NaOH, how many mL of NaOH will you have added to reach the 1st equivalence po
Keith_Richards [23]

Answer:

50.0mL 0.10M NaOH

Explanation:

The chemical equation of H₂SO₄ with NaOH to reach the first equivalence point is:

H₂SO₄ + NaOH → HSO₄⁻ + Na⁺ + H₂O

<em>Where 1 mole of the H₂SO₄ reacts per mole of NaOH</em>

<em />

The initial moles of H₂SO₄ are:

50.0mL = 0.0500L × (0.10 mol / L) = 0.0050 moles of H₂SO₄

As 1 mole of the acid reacts per mole of NaOH, to reach the first equivalence point we need to add 0.0050 moles of NaOH. As molarity of NaOH is 0.10M, the volume that we need to add to reach 1st equivalence point is:

0.0050 moles NaOH ₓ (1L / 0.10 moles NaOH) = 0.050L NaOH 0.10M =

<h3>50.0mL 0.10M NaOH</h3>
5 0
3 years ago
+
Alex

Answer: 0.714 moles of PbI_2 will be produced from 237.1 g of potassium iodide

Explanation:

To calculate the moles :

\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}    

\text{Moles of potassium iodide}=\frac{237.1g}{166g/mol}=1.428moles

The balanced chemical reaction is:

Pb(NO_3)_2+2KI\rightarrow PbI_2+2KNO_3

According to stoichiometry :

2 moles of KI produce =  1 mole of PbI_2

Thus moles of KI will require=\frac{1}{2}\times 1.428=0.714moles  of PbI_2

Thus 0.714 moles of PbI_2 will be produced from 237.1 g of potassium iodide

6 0
2 years ago
Read 2 more answers
What is a difference between a decomposition ans synthesis/combination reaction
klasskru [66]

A composition reaction produces a single substance from multiple reactants. A decomposition reaction produces multiple products from a single reactant.

Hope This Helped

7 0
2 years ago
What would be the formula of the compound iron (III) phosphide?
elixir [45]

The formula for iron (iii) phosphide would be FeP

4 0
3 years ago
Read 2 more answers
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