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
elena-s [515]
3 years ago
11

How many moles are in 345g of Re

Chemistry
1 answer:
andre [41]3 years ago
4 0

Answer:

The number of mole is 1.852moles

Explanation:

To calculate the number of mole, using the formula

n = m/Mm

n - number of mole

m - number of mass

Mm - number of molar mass

The molar mass of Re = 186.207

Then, n = 345g/ 186.207g/mol

n = 1.852mol

You might be interested in
Which sentence explains why gases can change volume but liquids cannot?
choli [55]

Answer: Molecules of gas are usually far apart and can be compressed unlike molecules of liquids.

Explanation:

The molecules of gases are usually far apart, moving freely and randomly, occupying extra space in the containing vessel. Hence, when compressed to become closely packed, gases have lower volume.

However, unlike gases, the molecules of a liquid are restricted, move less freely and occupy no extra space. Hence, liquids cannot be compressed, and their volume remains the same in their containing vessel.

8 0
3 years ago
Read 2 more answers
Which of these describes an exothermic reaction?
Paul [167]

A nswer: -

C. Energy is released by the reaction

Explanation:-

An exothermic reaction is one in which during the progress of the reaction heat is evolved.

So energy is released by the reaction.

It cannot be created as energy is neither created nor destroyed as per the Law of conservation of energy. Energy is not transferred either.

The energy released during the progress of the reaction originates from the chemical bonds of the reactants as they break during their conversion into products.

3 0
2 years ago
Read 2 more answers
What substance is added during hydrolysis in order to break down food macromolecules?
TEA [102]
Hey there! :D

Look at the word hydrolysis. Hydro= water Lysis = split. (Root words) 

So, water (in terms of the word) is added to help split and breakdown macromolecules. 

I hope this helps!
~kaikers
3 0
3 years ago
Read 2 more answers
In photosynthesis-
In-s [12.5K]

Answer:

A.

Explanation:

7 0
3 years ago
What is happening when an oxygen molecule is formed from two separate oxygen atoms?
antoniya [11.8K]

Answer:

They form a double bond

Explanation:

3 0
3 years ago
Other questions:
  • In an experiment you are asked to react hydrochloric acid with sodium hydroxide. when measuring the volume of the reactants, whi
    5·2 answers
  • What is the molarity of a solution in which 0.732 moles of hcl are dissolved in 0.975 liters of solution?
    14·1 answer
  • Calculate the energy required to excite the hydrogen electron from n = 1 to level n = 2. Also calculate the wavelength of light
    15·1 answer
  • Please answer asap MUCH NEEDED!!
    15·1 answer
  • Calculate the amount of solute excess out when the 60 gm of saturated solution of
    7·1 answer
  • Match each energy transformation to the correct image. ANSWER FAST PLS!!! THIS IS FOR 20 POINTS!!! AND I WILL MARK BRAINLIEST IF
    12·2 answers
  • HELPPP!!! In reaction 2Sr+O2=2SrO how many moles of Oxygen will be needed to react with 36.9g of SrO?
    7·1 answer
  • A scientist adds iodine as an indicator to an unknown substance. What will this indicator reveal about the substance?
    9·1 answer
  • describe how knowledge of the periodic table would be important in three different careers, based on what you’ve read.
    12·1 answer
  • According to the Kinetic Molecular Theory, all substances contain entities that are in a continuous random motion.Could you plea
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!