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
jekas [21]
3 years ago
5

What is the correct name for this formula: AI2O3?

Chemistry
1 answer:
agasfer [191]3 years ago
5 0

Answer- A

Explanation- Because you have to look at the symbols and remember which symbol goes with each chemical, if you don't then you could get confused.

You might be interested in
How is an oscilloscope used to tune a musical instrument?
sp2606 [1]
It uses the voltages and sound freq. in the air to measure the wave lengthths
4 0
4 years ago
Who else dislikes there siblings?????
4vir4ik [10]

Answer:

i do lol

Explanation:

8 0
3 years ago
Read 2 more answers
04.05 mol
victus00 [196]

Answer:

34.8 g

Explanation:

Answer:

We have the masses of two reactants, so this is a limiting reactant problem.

We will need a balanced equation with masses, moles, and molar masses of the compounds involved.

1. Gather all the information in one place with molar masses above the formulas and masses below them.  

Mᵣ:         123.90    70.91      208.24

                 P₄   +   20Cl₂ ⟶ 4PCl₅

Mass/g:   46.0       32.0

2. Calculate the moles of each reactant  

\text{moles of P}_{4} = \text{46.0 g P}_{4} \times \dfrac{\text{1 mol P}_{4}}{\text{123.90 g P}_{4}} = \text{0.3713 mol P}_{4}\\\\\text{moles of Cl}_{2} = \text{32.0 g Cl }_{2} \times \dfrac{\text{1 mol Cl }_{2}}{\text{70.91 g Cl }_{2}} = \text{0.4513 mol Cl }_{2}

3. Calculate the moles of PCl₅ we can obtain from each reactant

From P₄:

The molar ratio is 4 mol PCl₅:4 mol P₄

\text{Moles of PCl}_{5} = \text{0.3713 mol P}_{4} \times \dfrac{\text{4 mol PCl}_{5}}{\text{4 mol P}_{4}} = \text{0.3713 mol PCl}_{5}

From Cl₂:

The molar ratio is 4 mol PCl₅:20 mol Cl₂

\text{Moles of PCl}_{5} =  \text{0.4513 mol Cl}_{2}\times \dfrac{\text{4 mol PCl}_{5}}{\text{20 mol Cl}_{2}} = \text{0.090 26 mol PCl}_{5}

4. Identify the limiting and excess reactants

The limiting reactant is chlorine, because it gives the smaller amount of PCl₅.

The excess reactant is phosphorus.

5. Mass of excess reactant

(a) Moles of P₄ reacted

The molar ratio is 1 mol P₄:20 mol Cl₂

\text{Moles reacted} = \text{0.4513 mol Cl}_{2} \times \dfrac{\text{4 mol P}_{4}}{\text{20 mol Cl}_{2}} = \text{0.090 26 mol P}_{4}

(b) Mass of P₄ reacted

\text{Mass reacted} = \text{0.090 26 mol P}_{4} \times \dfrac{\text{123.90 g P}_{4}}{\text{1 mol P}_{4}} = \text{11.18 g P}_{4}

(c) Mass of P₄ remaining

Mass remaining = original mass – mass reacted = (46.0 - 11.18) g = 34.8 g P₄

4 0
4 years ago
what is the suggested weight of the sample that should be disssolved in the beaker before it is transferred to the NMR tube
sukhopar [10]
The sample must be sufficiently soluble (fig. 2) to yield an NMR spectrum. For 1H and 1H observed NMR, it is recommended to dissolve between 2 and 10 mg in between 0.6 and 1 mL of solvent so that the sample depth is at least 4.5 cm in the tube (fig. 3).
3 0
2 years ago
True or false: Gravity plays an important role in the formation of stars.
KiRa [710]

Answer:

the the answer iss ( true )

8 0
3 years ago
Other questions:
  • For question number 7 please help
    13·2 answers
  • Which statement accurately describes the movement of Earth's plates due to convection currents?
    12·1 answer
  • Whats the volume of 2.5 moles of hydrogen
    6·1 answer
  • A 2.45-g sample of strontium completely reacts with oxygen to form 2.89 g of strontium oxide. Use this data to calculate the mas
    5·2 answers
  • Question 4 of 15
    9·2 answers
  • I need to know the element in group 15 in the periodic table .
    10·1 answer
  • Write a covalent compound formed by nitrogen and oxygen. what is its Lewis structure​
    5·1 answer
  • What do the number of protons determine for an element? (PLEASE HELP ME THIS IS TIMED!!!! PLEASE HELP!!!!!)
    8·2 answers
  • 4.All of these are types of radioactive decay except
    9·1 answer
  • A star's mass determines the A.length of its lifecycle b.location of the star c.galaxy it belongs to. D.shape of the star
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!