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bulgar [2K]
2 years ago
14

Why is environmental science called interdisciplinary

Chemistry
1 answer:
Xelga [282]2 years ago
8 0
Because it relates to more than one branch of knowledge. It combines more than one academic disiplines.
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Explain the difference between potential energy and kinetic energy.
exis [7]

Answer:

<u>Potential energy is</u> the stored energy in an object or thing, while <u>kinetic energy is</u> the energy which an object contains because of a particular motion.

Explanation:

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For each item, choose whether the change is a physical change or chemical change
Aleonysh [2.5K]

Sorry, but where are the ‘items’?

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What is the mass sample of 0.0500 moles of zinc chloride ?
vlabodo [156]

Answer:

6.82g

0.59moles

Explanation:

1. What is the mass sample of 0.0500 moles of zinc chloride ?

Given parameters:

Number of moles ZnCl₂ = 0.05moles

Unknown:

Mass of the sample  =  ?

Solution:

To find the mass of a substance using the number of moles, it would be pertinent to understand what mole is.

A mole is a substance that contains the avogadro's number of particles.

It relates to the mass using the expression below;

                Mass of a substance  = number of moles x molar mass

Molar mass of  ZnCl₂;

        Atomic mass of Zn  = 65.4g/mol

                                   Cl = 35.5g/mol

Molar mass = 65.4 + 2(35.5)  = 136.4g/mole

Mass of a substance  = 0.05 x 136.4  = 6.82g

2. How many moles of potassium sulfide are in a 65.50g sample?

Given parameters:

Mass of K₂S  = 65.5g

Unknown:

Number of moles  = ?

Solution:

The number of moles of any substance is related to mass using the expression below;

              Number of moles  = \frac{mass}{molar mass}

Molar mass of K₂S  = 2(39) + 32  = 110g/mol

              Number of moles  = \frac{65.5}{110}   = 0.59moles

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3 years ago
What are the four layers of earth made of?
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Answer:

crust, mantle, inner core, outer core

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uh oh stinky uh oh stinky

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