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Marrrta [24]
3 years ago
5

What is the change found in melting and recasting iron

Chemistry
1 answer:
joja [24]3 years ago
8 0

Answer:

Since the melting point of iron (1538 C) is higher than the Curie point (770 C), the recast iron will lose its original magnetism. After the iron has cooled below the Curie point, it can be re-magnetized.

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A silver nitrate (AgNO3) solution is 0.150 M. 100.0 mL of a diluted silver nitrate solution is prepared using 10.0 mL of the mor
zheka24 [161]

Answer: The molarity of silver nitrate in the diluted solution is 0.015 M

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per Liter of the solution.

According to the dilution law,

M_1V_1=M_2V_2

where,

M_1 = molarity of concentrated solution = 0.150 M

V_1 = volume of concentrated solution = 10.0 ml

M_2 = molarity of diluted solution = ?

V_2 = volume of diluted solution = 100.0 ml

0.150\times 10.0=M_2\times 100.0

M_2=0.015M

Thus the molarity of silver nitrate in the diluted solution is 0.015 M

8 0
3 years ago
Which two rocks contain the mineral quartz?
Goshia [24]

Answer:

3. Granite and Gneiss.

Gneiss is a coarse to medium grained banded metamorphic rock formed from igneous or sedimentary rocks during regional metamorphism. Banded gneisses called migmatites are composed of alternating light colored layers of granite or quartz feldspar and dark layers rich in biotite.

Granite is a purely natural stone that comes directly from stone quarries and is then cut into thin slabs, polished, and fabricated into countertops. So-called quartz countertops are engineered stone products that may contain a large percentage of natural quartz but may also include other minerals.

3 0
3 years ago
Hydrogen sulfide and concentrated sulfuric acid react to form water and sulfur dioxide as shown in the following reaction:
Law Incorporation [45]

Answer:

2 moles of SO₂

Explanation:

Equation of reaction

H₂S + 3H₂SO₄ → 4H₂O + 4SO₂

From the equation of reaction above,

1 mole of H₂S will produce 4 moles of SO₂

1 mole of H₂S = 4 moles of SO₂

0.5moles of H₂S = zmoles of SO₂

z = (0.5*4) / 1

z = 2 moles of SO₂

0.5 moles of H₂S will produce 2 moles of SO₂

8 0
3 years ago
Please answer the doc <br><br> brainest to first answer
Tamiku [17]

Answer:Sarcastic with..

Explanation:none

6 0
3 years ago
Seawater has a salinity of 3.5%, i.e. 35 g of solid NaCl for one kilogram of seawater. For simplicity, assuming that all dissolv
artcher [175]

Answer:

π = 29.3 atm

Explanation:

The osmotic pressure π is given by

π = i MRT, where i=Vant Hoff factor =2 for NaCl ( 2 moles ions/mol NacL)

                            M = molarity

                            R = 0.0821 Latm/molK

                            T = temperature K

Assuming density of solution is 1 g/mL

M= 35 g/58.44 gmol / 1 L =  0.60 M

π = 2.0 x 0.60 mol/L x 0.0821 Latm/kmol x 300K = 29.3 atm

6 0
3 years ago
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