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BabaBlast [244]
3 years ago
12

Name the ionic compounds that contain transition metals.

Chemistry
1 answer:
Bumek [7]3 years ago
5 0
Salts of Transition elements.

CuSO4
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(HELP FAST )What occurs when a pure liquid substance is cooled?
12345 [234]

Answer:

The particles in the substance become less active

6 0
3 years ago
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A rigid cylinder with a movable piston contains a sample of gas. At 300. K, this sample has a pressure of 240. Kilopascals and a
iren [92.7K]

Answer:

The volume of this sample when the temperature is changed to 150 K and the pressure is changed to 160 kPa is 52.5 mL.

Explanation:

Boyle's law says that: "The volume occupied by a certain gaseous mass at constant temperature is inversely proportional to pressure" and is expressed mathematically as:

P * V = k

where k is a constant.

Charles's Law consists of the relationship that exists between the volume and the temperature of a certain quantity of ideal gas, which is maintained at a constant pressure, by means of a constant of proportionality that is applied directly. So Charles's law is a law that mathematically says that when the amount of gas and pressure are kept constant, the quotient that exists between the volume and the temperature will always have the same value:

\frac{V}{T}=k

Gay-Lussac's law states that the pressure of a fixed volume of a gas is directly proportional to its temperature. In other words, if the volume of a certain quantity of ideal gas remains constant, the quotient between pressure and temperature remains constant:

\frac{P}{T}=k

Combined law equation is the combination of three gas laws called Boyle's, Charlie's and Gay-Lusac's law:

\frac{P*V}{T}=k

Considering an initial state 1 and a final state 2, it is satisfied:

\frac{P1*V1}{T1}=\frac{P2*V2}{T2}

In this case:

  • P1: 240 kPa
  • V1: 70 mL
  • T1: 300 K
  • P2: 160 kPa
  • V2: ?
  • T2: 150 K

Replacing:

\frac{240 kPa*70 mL}{300 K}=\frac{160 kPa*V2}{150 K}

Solving:

V2=\frac{150 K}{160 kPa} *\frac{240 kPa*70 mL}{300 K}

V2= 52.5 mL

<u><em>The volume of this sample when the temperature is changed to 150 K and the pressure is changed to 160 kPa is 52.5 mL.</em></u>

6 0
4 years ago
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How many moles of aluminum is needed to react with 6.34 moles of Fe​3​O​4​ in the reaction below?
OLEGan [10]

Answer:

16.9 mol

Explanation:

8Al + 3Fe₃O₄ ⟶ 4Al₂O₃ + 9Fe

You want to convert moles of Fe₃O₄ to moles of Al.

The molar ratio is 8 mol Al:3 mol Fe₃O₄.     Calculate the moles of Al

Moles of Al = 6.34 × 8/3

Moles of Al = 6.34 × 2.667

Moles of Al = 16.9 mol Al

6 0
4 years ago
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The radius of a strontium atom is 215 pm. How many strontium atoms would have to be laid side by side to span a distance of 4.19
Solnce55 [7]

Answer:

0.97 ×  10⁹ strontium atoms

Explanation:

if       1 pm is equal with 10⁻⁹ mm

then  215 pm are equal to X mm

X = (215 ×  10⁻⁹) / 1 = 215 ×  10⁻⁹ mm

Now the diameter of the strontium atom is twice the radius:

diameter = 215 ×  10⁻⁹ × 2 = 430 ×  10⁻⁹ mm

if           1 strontium atom have a diameter of 430 ×  10⁻⁹ mm

then      X strontium atom are needed to be laid said by side to span a distance of 419 mm

X = (419 × 1) / (430 ×  10⁻⁹) mm = 0.97 ×  10⁹ strontium atoms

8 0
3 years ago
Which of the following is a layer of the solid Earth?
Roman55 [17]

Answer:

The inner core is solid. But the mantle is solid/plastic

Explanation:

I completed the class Earth science

6 0
3 years ago
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