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jeka57 [31]
3 years ago
8

The earth is made up of?

Chemistry
1 answer:
ollegr [7]3 years ago
4 0

Answer:

The Earth is made out of many things❤✌✔

Explanation:

The Earth is made out of many things. Deep inside Earth, near its center, lies Earth's core which is mostly made up of nickel and iron. Above the core is Earth's mantle, which is made up of rock containing silicon, iron, magnesium, aluminum, oxygen and other minera

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How many atoms are in 6.3 moles of lead
densk [106]

Answer:

3.79 x 10²⁴atoms

Explanation:

Given parameters:

Number moles of lead  = 6.3moles

Unknown:

Number of atoms  = ?

Solution:

To solve this problem,

              1 mole of a substance contains  6.02 x 10²³ atoms

            6.3 mole of Pb  will contain 6.3  x 6.02 x 10²³ = 3.79 x 10²⁴atoms

4 0
3 years ago
Is table salt a compound
Anna11 [10]

Answer:

Yes it is a compound

Explanation:

NaCl sodium and chlorine

4 0
3 years ago
Read 2 more answers
How many moles of helium is required to blow up a balloon to 87.1 liters at 74 C and 3.5 atm?
marshall27 [118]

Moles of helium is required to blow up a balloon to 87.1 liters at 74 C and 3.5 atm is  021.65 mole

Mole is the unit of amount of substances of specified elementary entities

According to the ideal gas law he number of moles of a gas n can be calculated knowing the partial pressure of a gas p in a container with a volume V at an absolute temperature T from the equation

n =pV/RT

Here given data is volume = 87.1 liters

Temperature = 74 °C means 347.15 k

Pressure = 3.5 atm

R = 0.0821

Putting this value in ideal gas equation then

n =pV/RT

n =  3.5 atm×87.1 liters / 0.0821 ×347.15 k

n = 021.65 mole

Moles of helium is required to blow up a balloon to 87.1 liters at 74 C and 3.5 atm is  021.65 mole

Know more about mole of helium

brainly.com/question/23365554

#SPJ1

8 0
1 year ago
What is the pH of pure water?<br> 2.0<br> 5.0<br> 7.0<br> 12.0
stealth61 [152]
7.0 this is the correct answer
7 0
3 years ago
There are three ways that heat can move from one place to another. Use examples pertaining to how heat is transferred from the s
stealth61 [152]
Heat moves in Radiation, conduction, and convection. 
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3 years ago
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