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3 years ago

What is the difference between a pulley and incline plane?

2 answers:

4 0

Pulley is a man made tool that helped people along tome to lift things they could not do by hand while a incline plane is like a car but flat and a machine that would let a person driving it to take thing froom one place to another.The difference is that a pulley lifts things whle a inclined plane moves supplies to another place.

erik [133]3 years ago

3 0

A incline plane is a flat inclined surface. You can stick a rope in the pulley and pull one side and the other side will lift something! They are both simple machines! The difference is a incline plane is a ramp and things go up or down and the pulley lifts something with force of your weight!!

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Which of the following choices best explains why glaciers move?

irinina [24]

D. Should be correct- the other ones don’t make sense

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3 years ago

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What is the mass of carbon dioxide formed when 36g of carbon is burnt?<br> C+O2 ------->C02

Anestetic [448]

Answer:

Mass = 132 g

Explanation:

Given data:

Mass of CO₂ formed = ?

Mass of C burnt = 36 g

Solution:

Chemical equation:

C + O₂ → CO₂

Number of moles of carbon:

Number of moles = mass/molar mass

Number of moles = 36 g/ 12 g/mol

Number of moles = 3 mol

now we will compare the moles of carbon and carbon dioxide.

C : CO₂

1 : 1

3 : 3

Mass of CO₂:

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3 years ago

Which solute, an electrolyte or a nonelectrolyte, has the greater effect on the boiling point when a given amount of each

m_a_m_a [10]

Answer:

Electrolyte

Explanation:

The electrolyte does because it dissociates into ions.

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The transfer of energy carried by light waves to particles in matter is called?

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Explanation:

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3 years ago

Draw the best lewis structure for bro4- and determine the formal charge on bromine

Svetach [21]

Answer :

Lewis-dot structure : It shows the bonding between the atoms of a molecule and it also shows the unpaired electrons present in the molecule. The electrons are represented by dot.

The given molecule is, perbromate ion.

Bromine has '7' valence electrons and oxygen has '6' valence electron.

Therefore, the total number of valence electrons in perbromate ion, $BrO_4^-$ = 7 + 4(6) + 1 = 32