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Leviafan [203]
3 years ago
11

What types of metals require the use of a Roman numeral in the name of their iconic compounds

Chemistry
2 answers:
denis23 [38]3 years ago
3 0
The answer is transition metals because they have no specific charge except for 1 or 2 of them
Serggg [28]3 years ago
3 0

Answer: Transition metal compounds that are composed of a (positive) transition metal ion and a negative anion; those having more than a +1. Charge. Iron makes a good example, for Iron III or Iron IV.

Explanation:

You might be interested in
When 125.0 g of ethylene (C2H4) burns in 60.0 grams of oxygen to give carbon dioxide and water, how many grams of CO2 are formed
gizmo_the_mogwai [7]

Answer:

             66 g of CO₂

Solution:

The Balance Chemical Reaction is as follow,

                             C₂H₂  +  5/2 O₂    →    2 CO₂  +  H₂O

Or,

                             2 C₂H₂  +  5 O₂    →    4 CO₂  +  2 H₂O    -------  (1)

Step 1: Find out the limiting reagent as;

According to Equation 1,

            56.1 g (2 mole) C₂H₂ reacts with  =  160 g (5 moles) of O₂

So,

                  125 g of C₂H₂ will react with  =  X g of O₂

Solving for X,

                      X =  (125 g × 160 g) ÷ 56.1 g

                      X =  356.5 g of O₂

It means for total combustion of Ethylene we require 356.5 g of O₂, but we are only provided with 60.0 g of O₂. Therefore, O₂ is the limiting reagent and will control the yield.

Step 2: Calculate Amount of CO₂ produced as;

According to Equation 1,

              160 g (5 mole) O₂ produces  =  176 g (4 moles) of CO₂

So,

                  60.0 g of O₂ will produce  =  X g of CO₂

Solving for X,

                      X =  (60.0 g × 176 g) ÷ 160 g

                      X =  66 g of CO₂

8 0
3 years ago
Which statement most accurately compares the temperature of the core of the sun to its surface?
DochEvi [55]
<span>C) the core is more than a million times hotter than the surface</span>
3 0
3 years ago
Identify which trends in the diagrams below describe atomic radius, ionization energy, electron affinity, and electronegativity.
mihalych1998 [28]

a)  figure describe ionization energy , electron affinity & electron negativity

b) figure describe Atomic Radius

c) does represent anything

Electronegativity : An atom attracted the bond pair of electrons in a covalent bond is called electronegativity of an element.       H-->Cl

Ionization energy : The amount of energy is required to remove of an electron from an isolated gas atom is called Ionization energy.   M + IP-----> M+ + e-

Electron affinity: The amount of enery is released when an electron added to an isolated atom is called electron affinity.

   X + e- ------> X- =- EA

Atomic radius ; The distance between the center of neuclies and outer most shell is called atomic radius.

8 0
3 years ago
How can you tell the difference between a compound and a heterogeneous mixture?
skad [1K]

Answer:

If a substance can be separated into its elements, it is a compound. If a substance is not chemically pure, it is either a heterogeneous mixture or a homogeneous mixture. If its composition is uniform throughout, it is a homogeneous mixture.

Explanation:

I hope it may help u

7 0
3 years ago
Calculate the density of a substance for which 4.78 x 106 L of the substance has a mass of 1.50 x 107 kg. Express your answer us
valentinak56 [21]
7.89 is the correct answer I believe
4 0
2 years ago
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