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
MArishka [77]
3 years ago
10

Which of the following BEST represents 3.0 moles of an element?

Chemistry
1 answer:
Umnica [9.8K]3 years ago
7 0

Answer:  27 grams of Be

Explanation:  Berylium has a molar mass of 9.0 grams/mole

(9.0 grams/mole)*(3 moles Be) = 27 grams Be

You might be interested in
A sentence for desert
Tanya [424]
He knew he was in the desert when he saw the dust blowing and a cactus. /// He was trying to desert the field in which was dangerous.
5 0
3 years ago
Read 2 more answers
The pH pH scale for acidity is defined by pH = − log 10 [ H + ] pH=-log10[H+] where [ H + ] [H+]is the concentration of hydrogen
balu736 [363]

Answer:

2 51 × 10^-5mol/L

Explanation:

The concentration of hydrogen ions can be calculated using the formula below :

pH = -log [H+]

pH = 4.6

[H+] = ?

[H+] = Antilog (-4.6)

[H+] = 2 51 × 10^-5mol/L

7 0
4 years ago
Write the formula for the polyatomic ion in fe(hco3)3. express your answer as an ion.
Juliette [100K]
Ions can be atomic or molecular. If an atom contains either positive or negative charge it said to be atomic cation or atomic anion.

When a molecule carry positive or negative charge it is called as polyatomic cation or polyatomic anion. Generally charged or ionized molecules are called as polyatomic ions.

In given question Fe(HCO₃)₃ ionizes as follow,

                         Fe(HCO₃)₃    →    Fe³⁺  +  3 HCO₃⁻

The Ions produced are Fe³⁺ and HCO₃⁻. Fe³⁺ is said to be atomic (Ferric) ion and HCO₃⁻ (Bicarbonate) is polyatomic ion or molecular ion.

6 0
3 years ago
1. Identify at least two factors which influences periodic properties of elements in groups and periods
Elena L [17]

Answer:

I am really sorry but and I needed points urgently

Explanation:

Sorry sorry

4 0
4 years ago
Help me I’ll do anything
KIM [24]

Answer:

its not A B or C soo choose D *This is what i think*

3 0
3 years ago
Read 2 more answers
Other questions:
  • If you used the method of initial rates to obtain the order for no2, predict what reaction rates you would measure in the beginn
    10·1 answer
  • Heat that flows by conduction is the transfer of thermal energy between substances in contact. What must occur for this to happe
    15·2 answers
  • Both white phosphorus and red phosphorus are made up only of phosphorus atoms.Does this mean they are both pure substances? Coul
    14·1 answer
  • if lithium loses an electron to become li+ what is the average atomic mass of the lithium ion? explain how you arrived at your a
    14·2 answers
  • If you examined the human body on a chemical composition basis, which of the following combinations of elements would be most co
    9·1 answer
  • In order to use the gas laws, all temperatures must be in the _ scale.
    14·2 answers
  • Please Help mE!!!!!!!!!!!!!!!!!!!!!!
    10·2 answers
  • Compared to the particles in a gas, the particles in a solid move
    15·1 answer
  • List three facts or accomplishments of Modern India (India today)​
    14·1 answer
  • I need help yall ill mark brainliest :)
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!