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Stolb23 [73]
3 years ago
14

What is the term for the region where the north and south poles of atoms in a material will line up​

Chemistry
2 answers:
hjlf3 years ago
3 0

Answer:

ferromagnetic materials

Explanation:

neonofarm [45]3 years ago
3 0

Answer:

<u>Magnetic domains </u>are regions of matter where north and south poles of atoms line up in the same direction.

Only certain materials, called ferromagnetic materials, can be magnetized. They include iron, cobalt, and nickel.

Explanation:

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How many grams of As2S3 are in 3.25 moles?
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Answer:

Explanation:

Molar mass of As2S3= {75(2) + 32(3)}

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Amount = 3.25mole

And

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mass = 799.5g

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What does the chemical formula CaCI2 show about the compound or represents?
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Answer:

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3 years ago
Determining Density and Using Density to Determine Volume or Mass
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corrected question:

Determining Density and Using Density to Determine Volume or Mass

(a) Calculate the density of mercury if 1.00 × 10 g occupies a volume of 7.36 cm³

(b) Calculate the volume of 65.0 g of liquid methanol (wood alcohol) if its density is 0.791 g/mL.

(c) What is the mass in grams of a cube of gold (density = 19.32 g/cm) if the length of the cube is 2.00 cm?

(d) Calculate the density of a 374.5-g sample of copper if it has a volume of 41.8 cm³ A student needs 15.0 g of ethanol for an experiment. If the density of ethanol is 0.789 g/mL, how many milliliters of ethanol are needed? What is the mass, in grams, of 25.0 mL of mercury (density = 13.6 g/mL)?

Answer:

density = \frac{mass}{volume}

ρ=m/v ,m=ρv,    v=m/ρ

(a)m=1*10g  , v=7.36cm³

    ρ=10/7.36 =1.36g/cm³

(b) m=65g, ρ=0.791 g/mL.

   v= 65/0.791 =82.17g/mL

(c) ρ=19.32g/cm³, l=2cm, v=l³=8cm³

    m=19..32*8=154.56g/cm³

(d) mass of copper=374.5g , v=41.8cm³

   ρ=374.5/41.8 =8.96g/cm³

 mass of ethanol=15g,  density of ethanol=0.789g/mL

v=15/0.789 =19.01mL

volume of mecury=25mL, density of mercury=13.6g/mL

m=25*13.6=340g

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3 years ago
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