1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ExtremeBDS [4]
3 years ago
6

When is a roman numeral most likely needed in the name of an ionic compound

Chemistry
2 answers:
DochEvi [55]3 years ago
8 0

Well to put it simply, its needed when the cation is a transition metal.

faltersainse [42]3 years ago
5 0
AN ionic compound with more than one charge uses a roman numeral. For example copper (III) sulfate and copper (II) sulfate nomenclature is used because copper has 2 charges +2 and +3. Among other metals are mercury, lead, tin, etc.
You might be interested in
What would be the concentration of a solution resulting when you dissolve 4.725g of nacl (molar mass = 58.45) in water to make a
aliya0001 [1]
<span>There are a number of ways to express concentration of a solution. This includes molarity. It is expressed as the number of moles of solute per volume of the solution.  To convert the mass of the solute to moles, we use the molar mass of the substance. We calculate as follows:

MOlarity = 4.725 g ( 1 mol / 58.45 g ) / .5 L = 0.162 mol / L</span>
3 0
3 years ago
Digestion is the process of breaking down food into substances that the can use. Which of the following is a physical change tha
Yuri [45]
C - Enzymes help break down carbohydrates.
8 0
3 years ago
Read 2 more answers
In a coffee cup calorimeter, 1.60 g of NH4NO3 is mixed with 75.0 g of water at an initial temperature of 25.00 degrees C. After
igomit [66]

Answer:

+26.6kJ/mol

Explanation:

The enthalpy of dissolution of NH₄NO₃ is:

NH₄NO₃(aq) + ΔH  → NH₄⁺ + NO₃⁻

Where ΔH is the heat of reaction that is absorbed per mole of NH₄NO₃,

The moles that reacts in 1.60g are (Molar mass NH₄NO₃:80g/mol):

1.60g * * (1mol / 80g) = 0.02 moles reacts

To find the heat released in the coffee cup calorimeter, we must use the equation:

Q = m×ΔT×C

Where Q is heat released,

m is mass of the solution

ΔT is change in temperature (Final temperature - Initial temperature)

C is specific heat of the solution (4.18J/g°C)

Mass of the solution is:

1.60g + 75g = 76.60g

Change in temperature is:

25.00°C - 23.34°C = 1.66°C

Replacing:

Q = m×ΔT×C

Q = 76.60g×1.66°C×4.18J/g°C

Q = 531.5J

This is the heat released per 0.02mol. The heat released per mole (Enthalpy change for the dissolution of NH₄NO₃) is:

531.5J / 0.02mol = 26576J/ mol =

+26.6kJ/mol

<em>+ because the heat is absorbed, the reaction is endothermic-</em>

7 0
3 years ago
A 2.00 L sample of gas at 35C is to be heated at constant pressure until it reaches a volume of 5.25 L. To what Kelvin temperatu
Anastaziya [24]

Answer:

The sample will be heated to 808.5 Kelvin

Explanation:

Step 1: Data given

Volume before heating = 2.00L

Temperature before heating = 35.0°C = 308 K

Volume after heating = 5.25 L

Pressure is constant

Step 2: Calculate temperature

V1 / T1 = V2 /T2

⇒ V1 = the initial volume = 2.00 L

⇒ T1 = the initial temperature = 308 K

⇒ V2 = the final volume = 5.25 L

⇒ T2 = The final temperature = TO BE DETERMINED

2.00L / 308.0 = 5.25L / T2

T2 = 5.25/(2.00/308.0)

T2 = 808.5 K

The sample will be heated to 808.5 Kelvin

7 0
3 years ago
Which two structures would provide a positive identification of a plant cell under a microscope
katovenus [111]
Lysosome, central vacuole
7 0
3 years ago
Read 2 more answers
Other questions:
  • Suppose you have 0.100 m3 of co2, at pressure of 2.00 atm, and a temperature of 30.0?c. How many grams of co2 do you have? Expre
    6·1 answer
  • What is the root word of heat
    11·1 answer
  • A sample of carbon 12 has a mass. Of 6.00g how many atoms of carbon 12 are in the sample
    6·1 answer
  • How many molecules are there in 79g of Fe2O3? how many atoms is thi
    8·1 answer
  • Draw Molecular diagrams of solid, liquid, gas and plasma phases of matter.
    9·1 answer
  • How did Democritus help our understanding of the atom?
    13·1 answer
  • what pressure will be needed to reduce the volume of 77.4 l of helium at 98.0 kpa to a volume of 60.0 l? 76 kpa 126 kpa
    9·1 answer
  • What is the formula for nickel(III) carbide?
    11·2 answers
  • Alkynes undergo many of the same reactions that alkenes do.<br><br> a. True<br> b. False
    8·2 answers
  • Differentiate between homogenous and heterogeneous catalysis​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!