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ICE Princess25 [194]
3 years ago
9

What type of galaxy do we live in

Chemistry
1 answer:
strojnjashka [21]3 years ago
7 0
We live in the Milky Way Galaxy
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Sulfur trioxide, so3, is made industrially in enormous quantities by combining oxygen and sulfur dioxide, so2. what amount (mole
DedPeter [7]

The answer is 37.5 moles

The explanation:

1- when we have the mass of SO3 in Kg so, first we have to convert it to grams:

mass = 3 * 1000 = 3000 g

2- we need to get the molar mass of SO3 :

molar mass of SO3 = 32 + (16*3)

= 80 g/mol

3- then we can use this formula to get number of moles:

moles = mass / molar mass

= 3000 g / 80 g/mol

= 37.5 moles

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3 years ago
Two crates, one heavy and one light, are at rest on a waxed floor. Which crate will need the greater force to give the same chan
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The heavy one because mass times force is equal to speed. The lighter one has less mass to it goes faster without as much effort. I hope that helps!
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Less friction to stop the wheel from turning
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3 years ago
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What is the majority of 0.50 g of na dissolved in a 1.5 L solution
Oxana [17]

The correct answer is 0.014467 M.  

Molarity is defined as the number of moles present in a liter solution, that is, number of moles / liter solution.  

The molar mass of sodium (Na) is 23.0 g/mol

Thus, 1 mole of Na contains 23.0 g

Now, x moles of Na contains 0.50 g

Moles = 0.50 × 1 / 23.0

Moles = 0.50 / 23.0  

= 0.0217 moles of Na

Molarity = Number of moles / liters of solution

= 0.0217 / 1.5

= 0.014467 M


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3 years ago
Scientists have developed the Atomic Theory over a period of hundreds of years. What will help us further the development? A. in
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A. increasing the ability of technology, like microscopes, to see even smaller particles

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