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vodka [1.7K]
3 years ago
7

What is the result of cooled, solidified lava?

Chemistry
1 answer:
Dahasolnce [82]3 years ago
8 0
Cooled, solidified lava is called igneous rocks.
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Find the density of an object that has a mass of 12.69 grams and a volume of 3.5cm3
lutik1710 [3]

Answer:

3.62 g/cm³

Explanation:

density = mass ÷ volume

Therefore, do 12.69 divided by 3.5

6 0
3 years ago
Under which conditions of temperature and pressure does a real gas behave most like an ideal gas
Veseljchak [2.6K]
At higher temperature, and lower pressure. 
4 0
3 years ago
Use the value of the Avogadro constant (6.02 × 1023 mol–1) to calculate the total number of atoms in 7.10 g of chlorine atoms. (
kolbaska11 [484]

The total number of atoms in 7.10g of chlorine is 1.204 × 10²³atoms.

HOW TO CALCULATE NUMBER OF ATOMS:

  • The number of atoms in a substance can be calculated by multiplying the number of moles in that substance by Avogadro's number as follows:

  • no. of atoms = no. of moles × 6.02 × 10²³ mol-¹

  • The number of moles in 7.10g of Cl is calculated as follows:

no. of moles = mass ÷ molar mass

no. of moles = 7.10g ÷ 35.5g/mol

no. of moles = 0.2mol

no of atoms = 0.2mol × 6.02 × 10²³

no. of atoms = 1.204 × 10²³atoms.

  • Therefore, the total number of atoms in 7.10g of chlorine is 1.204 × 10²³atoms.

Learn more: brainly.com/question/15488332?referrer=searchResults

6 0
2 years ago
Which of the following chemical symbols represents the element sodium?
lina2011 [118]
Chemical symbols on the periodic table represent an element. 

Answer: D. Na
4 0
3 years ago
Determine the density of a substance having a mass of 57.2 g and a volume of 33.8mL
TEA [102]
Hey there!:

density = mass / volume

d =  57.2 / 33.8

d = 1.692 g/mL

hope this helps!
7 0
3 years ago
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