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ivann1987 [24]
4 years ago
14

Transition metal elements are in the "d block" on the periodic table, because the electron configuration of every transition met

al ends with electrons in "d" atomic orbitals. True False
Chemistry
2 answers:
goblinko [34]4 years ago
4 0
TRUE :) ;D;D;D;D;D ;J

MAVERICK [17]4 years ago
4 0

Answer:  TRUE

Explanation:  Transition elements are those which have electrons in the d orbitals in their outermost valence shell. They are also known as d block elements.

Thus Copper, Iron, Nickel etc are d block elements because their electrons are in the d orbital as shown-

Copper (Cu) = [Ar] 3d10 4s1

Iron (Fe) = [Ar] 3d6 4s2

Nickel (Ni) = [Ar] 3d8 4s2

Thus as shown in the electronic configuration above, the given stateent is true.

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Hydrogen iodide is not produced by the same method as for hydrogen chloride.why??
lara [203]

Answer:

Using Phosphoric acid will work perfectly for producing Hydrogen halides because its not an Oxidizing agent. ...

Using an ionic chloride and Phosphoric acid

H3PO4 + NaCl ==> HCl + NaH2PO4

H3PO4 + NaI ==> HI + NaH2PO4

H2SO4 + NaCl ==> HCl + NaHSO4

This method(Using H2So4) will work for all hydrogen hydrogen halide except Hydrogen Iodide and Hydrogen Bromide.

The Sulphuric acid won't be useful for producing Hydrogen Iodide because its an OXIDIZING AGENT. Whist producing the Hydrogen Iodide... Some of the Iodide ions are oxidized to Iodine.

2I-² === I2 + 2e-

Explanation:

4 0
3 years ago
A 50.0-g sample of liquid water at 25.0 °c is mixed with 35.0 g of water at 51.0 °c. The final temperature of the water is _____
bija089 [108]

[text]Solution:\\ Heat blance is gained by 50g =Heat balance lost by 25g of water\\ So,\\ \(M1 \times temp + M2 \times temp/M1+M2)\\\\\\\frac{(50.0g\times25.0^{.}c)+(23.0g\times57.0^{.}c)}{50.0g+23.0g}         =35.1^{.}c}[/tex]

3 0
3 years ago
Read 2 more answers
he Ostwald process is used commercially to produce nitric acid, which is, in turn, used in many modern chemical processes. In th
Vika [28.1K]

Answer:

148.2 g of H20

Explanation:

Equation of reaction: 4NH3 + 5O2 ---> 4NO + 6H20

From the equation above, 4 moles of ammonia reacts with 5 moles of oxygen gas to produce 6 moles water.

Molar mass of NH3 = 17 g/mol;

Molar mass of O2= 32 g/mol;

Molar mass of H2O = 18 g/mol

First, we determine the limiting reactant:

4*17 g of NH3 reacts with 5*32 g of O2

Mass Ratio = 68 : 160

Therefore, NH3 is the limiting reactant.

68 g of NH3 reacts to produce 6* 18 g of H20 = 108 g of H2O

93.3 g of NH3 will react to produce (93.3 * 108)/68 g of H20 = 148.2 g of H2O

Therefore, the maximum amount of H2O produced = 148.2 g

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3 years ago
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I mix 30 grams of a solid, 30 grams of another solid, and 5 milliliter of water together in a sealed container. A chemical react
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The same because it cant losers anything
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