What is the mass of 1.2 mol IrI3?​

Answers

Answer 1

Answer:

690 g IrI₃

Explanation:

To convert from moles to grams, you have to use the molar mass of the compound. The molar mass of IrI₃ is 572.92 g/mol. You use this as the unit converter in this equation:

[tex]1.2molIrI3 * \frac{572.92g}{1mol} = 687.504 g IrI3[/tex]

Round to the lowest number of significant figures which is 2 to get 690 g IrI₃.


Related Questions

what "waste" does the blood cell drop off at the lungs .... ANSWER ASAP AND I POINT EXTRA

Answers

I believe the answer is carbon dioxide

Answer:

it drops off of carbon dioxide... but i believe when the blood returns to the heart it " travels" through the pulmonary veins...

use your brain :)  brainliest pweasee?

Temperature is a measure of the average _____energy of particles in a substance.

Answers

Answer:

kinetic energy

Explanation:

Answer:

kinetic energy

Explanation:

In physics, the kinetic energy of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes.

is it true that the atomic radius of A1 is greater than the atomic radius of In ?

Answers

Answer:

Yes

Explanation:

Yes it is true

In a solution, the particles of different substances are ___ a. mixed evenly, b. never mixed, c. mixed unevenly, d. separated from each other. PLEASE ANSWER ASAP TY

Answers

It should be D.

When creating a solution, the different particles break down and combine with each other, hence why it’s called a solution, it’s creating a new solution. You can evenly mix a mixture, but it wouldn’t create a substance. So it should be D, as that is the only one that would apply to substances.

A runner completes a 400m race in 43.9s. What is his average speed?

Answers

Answer:

average speed around 9.1 meters/second

Explanation:

400 divided by 43.9

How many joules of heat are absorbed when 70.0 grams of water is completely vaporized at its boiling point ?

Answers

Answer: The answer would be 158,200


Determine the mass of 31.4 moles of Sodium.

Answers

Answer:

721.9 grams

I hope this helps!

What is the mass of 18.5 moles of iron?

Answers

Answer:

1 mole =56 g

18.5 moles =56×18.5

=1036 moles

Hope this helps you Stay happy and safe Do mark as brainliest ✌️

A piece of gold has a mass of 21.7 kg and a volume of 5.78 cm3 . What is the density of gold? (Convert kgg)

Answers

Answer:

The answer is 3754.33 g/cm³

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume} \\ [/tex]

From the question

mass = 21.7 kg = 21700 g

volume = 5.78 cm³

We have

[tex]density = \frac{21700}{5.78} \\ = 3754.3252...[/tex]

We have the final answer as

3754.33 g/cm³

Hope this helps you

Conservation of Mass in Chemical Reactions: 7th grade Science


Question: In a chemical reaction, the total mass of the reactants is 10.0 grams. After the reaction, the total mass of the products must be

A. More than 10.0 grams
B. Exactly 20.0 grams
C. Exactly 10.0 grams
D. Less than 10.0 grams

Answers

Answer:

After the reaction, the total mass of the products must be D. Less than 10.0 grams

which of these is an element?

KBr
O2
2KCl
FeO2

Answers

Answer:

02

Explanation:

all the other options given are compounds

Why can two water molecules stick to each other?

Answers

I think Both of these atoms can form a hydrogen bond with oxygen atoms of different water molecules. If I’m wrong sorry . Have a nice day :)

Plz help! I’m on a timer!

Answers

Answer: c. ceabd

Explanation: Substances that are more dense move to the bottom of the beaker. Substances that are less dense float to the top.

PLEASE HURRY (WILL MARK BRAINLIEST)

What happens when the sound waves released by a bat hit an object?
The sound waves are diffused.
The sound waves are reflected.
The sound waves are refracted.
The sound waves are absorbed,

Answers

Answer:

B.) The sound waves are reflected.

Explanation:

On edge,

i also answered so the other person could get the brainliest

Answer:

b

Explanation:

Identify the techniques used to separate the components of the given mixtures.

1. Faucet with cloth
2. Nails attracted by magnets
3. Pouring off liquid from rice
4. Sorting buttons with different colors
5. Use of sieve to produce finer sand​

Answers

Answer: 1.valving  , 2. picking, 3. decantation , 4. sorting, 5. seiveing

Thank me later!

Help me please

Chemical energy is a form of_______ energy

A. heat
B. kinetic
C. potential
D. electromagnetic​

Answers

Answer:

potential

............

Answer:

Chemical energy is a form of potential energy.

1. The human eye can detect wavelengths of light as short as 0.000037 cm. What is this
wavelength in nanometers?

Answers

Answer:

0.000037 cm is 370 nanometers

Explanation:


With circulation, the heart provides your body with:
a. oxygen
b. nutrients
C. a way to get rid of waste
d. all of the above

Answers

Answer:  D) all of the above

Explanation:

The lungs pump oxygen in and carbon dioxide out, which goes through the blood stream to help with the cell's energy needs.

Nutrients pass through the blood stream as well. The nutrients start with the digestive system (mouth, esophagus, stomach, small intestine) before going into the blood stream. The nutrients are building blocks to help make new cells when old ones die off.

When those cells die off, the body sheds them like dead skin, but internal dead cells are passed off as waste. This waste and other byproducts the body doesn't need passes through the blood stream as well.

In short, the blood stream is basically the highway to help get desired materials (eg: oxygen and nutrients) and get rid of waste (eg: carbon dioxide and other unwanted byproducts or dead cell material)

So that's why the answer includes A, B and C.

organisms which contain only one cell are?​

Answers

Answer:

bacteria, protists, and yeast.

Explanation:Unicellular organisms are made up of only one cell that carries out all of the functions needed by the organism, while multicellular organisms use many different cells to function. Unicellular organisms

HELP ME ASAP PLEASE IDK THIS

Answers

Answer:

c

Explanation:

Calculate the density in grams per cubic centimeter of a material that has a mass of
720 milligrams and a volume of 10.0 cubic centimeters. =

Answers

Answer:

1.72 g/cm ^3

Explanation:

You find an old gold ring in your house. You are sure it is gold but you do not know what
karat it is. After chemistry class you determine the mass and volume of the ring. You
determine its mass is 14.3 g and its volume is 0.808 g. Next calculate the density of the ring and determine what karat gold it is.
Can someone me with this question plz

Answers

Answer:

find how much gold weighs by volume based on the karat and factor that in to find the answer  

Explanation:

A rock occupies a volume of 20 cm3 and has a mass of 54 grams. Find the density of this rock

Answers

Answer:

2.7 gm/cm cubed

Explanation:

To get the answer, you should divide the mass by the volume or 54 divided by 20 = 2.7

Balance the following chemical equations

Answers

Answer:

1) 3Fe + 2O(2, this is the subscript) - Fe(3)O(4)

2) 2Sr + O(2) - 2SrO

3) Sn + 2NaOH - Na(2)SnO(2) + H(2)

4) 2K + Br(2) -2KBr

5) 2C(8)H(18) + 25O(2) - 16CO(2) + 18H(2)O

How many miles are there in 12327 feet

Answers

Explanation:

2.3346591 miles is in 12327 feet

Answer:

2.3346591

Explanation:

Always remember, to convert

feet to miles, all you have to do is

divide the length by 5280 and then

you will get this much miles: 2.3346591

Hope this helps! <3

Which of the following happens to the particles when the temperature of liquid water drops?

Answers

Explanation:

when water is in liquid form and the temperature DROPS it becomes solid ice the process is melting , freezing and evaporation this goes in a circle

The characteristic bright–line spectrum of potassium is produced when electrons
A) jump to higher energy levels
B) return to lower energy levels
C) are lost by neutral potassium atoms
D) are gained by neutral potassium atoms
E) are released from the nucleus

Answers

Answer: B.

Explanation:

When the electron changes levels, it decreases energy and the atom emits photons. The photon is emitted with the electron moving from a higher energy level to a lower energy level. The energy of the photon is the exact energy that is lost by the electron moving to its lower energy level.

Hope this helps!

A car with a mass of 800 kg is accelerated with a force of 6000 N. If resisting forces are ignored, what is the acceleration of the car? yen​

Answers

Answer:

The answer is 7.5 m/s²

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

[tex]a = \frac{f}{m} \\ [/tex]

f is the force

m is the mass

From the question we have

[tex]a = \frac{6000}{800} = \frac{60}{8} = \frac{15}{2} \\ [/tex]

We have the final answer as

7.5 m/s²

Hope this helps you

Which of the following statements is true about atoms?

Answers

Answer:

D

Explanation:

HELP ME OUT PLEASE!! I NEED HELP !
This diagram represents one of the four levels of industry. Which term best
completes the diagram?
Factory employees
Oil refinery workers
Butchers
A. Quaternary sector
OB. Secondary sector
C. Tertiary sector
D. Primary sector

Answers

It’s b secondary sector

Answer: OB. Secondary Sectors.

Explanation: Make sure to study as the text provided, and study guide state manufacturers, butchers, and factory employees are apart of the secondary sector in the world economy. You’ll do great on Quiz 3.2.5! Make sure to study, have a g’day. Please don’t listen to people who say this answer is falsen as many other questions do, don’t be the one to spread false information as this people’s academics, here’s a picture as well ❤︎. Again, its B!

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