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2 years ago

A crane lifts a 75kg miss a height of 8m. Calculate the gravitational potential energy gained by the mass:

Chemistry

1 answer:

Nesterboy [21]2 years ago

8 0

2205J

Explanation:

Given parameters:

Mass of object = 75kg

height = 8m

Unknown:

Potential energy gained = ?

Solution:

Potential energy is the energy due to rest of a body. It derived using the expression below:

P.E = mgh

where m is the mass

g is the acceleration due to gravity()9.8m/s²)

h is the height

P.E = 75 x 9.8 x 3 = 2205J

Learn more:

Potential energy brainly.com/question/10770261

#learnwithBrainly

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2 years ago

Consider the balanced equation below.

Karo-lina-s [1.5K]

The correct option is (a) H₂S : SO₂ = 2 : 2 and O₂ : H₂O = 3 : 2

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Molar ratio also known as stoichiometry is the ratio in which the reactants and products are either formed or reacted in the given equation

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2H₂S + 3O₂ --> 2SO₂ + 2H₂O

molar ratio can be determined by the coefficients of the compounds in the balanced reaction.

coefficient is the number in front of the chemical compound

coefficients for the compounds in this reaction are as follows ;

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1 year ago

Which area of chemistry best links the use of titanium and plastics in artificial bone and joint replacements?

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Answer:I think it’s material chemistry

Explanation:

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Hellllppppp lons Worksheet

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The metals will lose electrons while the non metals will gain electrons in order to attain octet structure.

An ion can be cation (positively charged) or anion (negatively charged).

Cations attain octet structure (8) by losing electron(s) while anions become stable or attains octet structure (8) by gaining electron(s).

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O ------------ 6 ---------------------- 2 ------------------------ none -------------- $O^{2-}$

Ca -------- 2 ----------------------- none ---------------------- 2 ------------------ $Ca^{2+}$

Br ----------- 7 --------------------- 1 ------------------------ none --------------- $Br^{-}$

S ------------ 6 ----------------------- 2 ------------------------ none --------------- $S^{2-}$

Cl ------------ 7 ----------------------- 1 ------------------------ none ---------------- $Cl^{-}$

K -------------- 1 ----------------------- none ----------------------- 1 ------------------ $K^{+}$

Mg ------------ 2 ---------------------- none ---------------------- 2 ---------------- $Mg^{2+}$

Be ------------- 2 ---------------------- none ---------------------- 2 ---------------- $Be^{2+}$

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2 years ago