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Dmitry_Shevchenko [17]
3 years ago
13

What is earths surface made of?

Chemistry
2 answers:
hram777 [196]3 years ago
8 0
Earths surface is made of rock
PIT_PIT [208]3 years ago
5 0
The rocky surface layer of Earth, called the crust, is made up of mostly oxygen, silicon, aluminum, iron, calcium, sodium, potassium and magnesium.
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An automobile gasoline tank holds 25.0 gal when full. how many pounds of gasoline will it hold if the gasoline has a density of
lora16 [44]

The amount (in pounds) the gasoline tank will hold when full is 153.76 lb

<h3>What is density? </h3>

The density of a substance is simply defined as the mass of the subtance per unit volume of the substance. Mathematically, it can be expressed as

Density = mass / volume

<h3>How to convert gallon to milliliters </h3>

1 gallon = 3785.412 mL

Therefore,

25 gallon = 25 × 3785.412

25 gallon = 94635.3 mL

<h3>How to determine the mass </h3>
  • Density = 0.737 g/mL
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  • Mass =?

Mass = Density × Volume

Mass = 0.737 × 94635.3

Mass = 69746.2161 g

<h3>How to convert grams to pounds </h3>

453.592 g = 1 lb

Therefore,

69746.2161 g = 69746.2161 / 453.592

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4 0
2 years ago
1.Convert 2.37 moles of Al(NO3)3 to grams.. Single choice.
aleksley [76]

Answer:

1.   504.8 g Al(NO3)3

2.   14.3 moles O2

Explanation:

1.

g = moles x molar mass = 2.37 x 212.996 = 504.8 g Al(NO3)3

MM Al(NO3)3 = 212.996 g/mol

2.

moles = mass : molar mass = 456.89: 32 = 14.3 moles O2

7 0
3 years ago
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