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Arturiano [62]
3 years ago
8

Compare and contrast the uses of iron triad and the use of coinage metals

Chemistry
2 answers:
Arlecino [84]3 years ago
7 0
<span>Answer: Iron triad are used in the process to create steel and other metal mixtures. Coinage Metals are used for much more than just coins, and many other elements besides these are made into coins.</span>
ohaa [14]3 years ago
7 0

Iron triad is Iron , cobalt and nickel

the use of this iron triad is it is used as alloy as steel.

coinage metal is copper, silver and gold : in them all metals are transition metals and all are less reactive

coinage metals are used in jewellary (silver and gold)

copper is used in wiring of electricity.

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The Society of Automotive Engineers has established an accepted numerical scale to measure the viscosity of motor oil. For examp
natta225 [31]

Answer:

Most viscous to least viscous: (c)> (b)> (a)

Explanation:

For hydrocarbons, viscosity increases with increasing molar mass. Because increasing molar mass signifies increase in number of electrons in molecules.

We know that in non-polar hydrocarbons, only van der waal intermolecular force exists. Van der waal force is proportional to number of electrons in a molecule.

Therefore with increasing molar mass, van der waal force increases. hence molecules gets more tightly bind with each other resulting increase in viscosity.

Here molar mass order : (c)> (b)> (a)

Therefore viscosity order : (c)> (b)> (a)

5 0
3 years ago
A 5.00 L sample of helium expands to 12.0 L at which point the
mina [271]

Answer:

1.73 atm

Explanation:

Given data:

Initial volume of helium = 5.00 L

Final volume of helium = 12.0 L

Final pressure = 0.720 atm

Initial pressure = ?

Solution:

"The volume of given amount of gas is inversely proportional to its pressure by keeping the temperature and number of moles constant"

Mathematical expression:

P₁V₁ = P₂V₂

P₁ = Initial pressure

V₁ = initial volume

P₂ = final pressure

V₂ = final volume  

Now we will put the values in formula,

P₁V₁ = P₂V₂

P₁ × 5.00 L = 0.720 atm × 12.0 L

P₁ = 8.64 atm. L/5 L

P₁ = 1.73 atm

7 0
3 years ago
A person has a mass of 63.4kg. What is the weight in pounds?
Evgen [1.6K]
If a person weighs 63.4 KG they will weigh 139.773 but if you estimate it which in most cases you do it would be 139.8 :)
3 0
1 year ago
What are the sign and magnitude of the charge of atom containing 14 protons, 15 neutrons, and 12 electrons?
Karo-lina-s [1.5K]
<span>We know that protons gives positive charge, neutrons no charge and electrons negative, then +14 - 12 = +2 So the charge of the atom is sign positive and magnitude 2</span>
7 0
3 years ago
Which are components of cell theory? Check all that apply.
STatiana [176]

Answer:

All living things are made up of cells.

cells are the basic unit of structure and function of ll living things.

All cells are come from other cells.

Explanation:

The cell theory is historic scientific theory and is universally accepted. This theory was given by Robert Hook in 1665. According to this theory all living things are made up cells.

Cell:

Cell is the smallest unit of life and it is building block of life.

This theory consist of following points:

All living things are made up of cells.

Cells are the basic unit of structure and function of ll living things.

All cells are come from other cells. Which means that cells are originated from pre-existing cells.

The other given options:

Cells comes from nonliving matter.

Cells make up most organisms bu not all.

These are two are not the postulate of cell theory because all living organisms are made of cells.

8 0
3 years ago
Read 2 more answers
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