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
Sunny_sXe [5.5K]
3 years ago
11

Can someone help me please

Chemistry
1 answer:
dsp733 years ago
6 0
I think silicon(Si) is the best example of semiconductors
You might be interested in
Does 1 gram of phosphorus react with 6 grams of iodine to form 4 grams of phosphorus triodine in P4(s)+6I2(s)=4PI3(s)
mafiozo [28]

Answer:

No

Explanation:

One mole of P₄ react with six moles of I₂ and gives 4 moles of PI₃.

When one gram phosphorus and 6 gram of  iodine react they gives 8.234 g ram of PI₃ .

Given data:

Mass of phosphorus = 1 g

Mass of iodine = 6 g

Mass of  PI₃ = ?

Solution:

Chemical equation:

P₄ + 6I₂    →  4PI₃

Number of moles of P₄:

Number of moles = Mass /molar mass

Number of mole = 1 g / 123.9 g/mol

Number of moles  = 0.01 mol

Number of moles of I₂:

Number of moles  = Mass /molar mass

Number of moles = 6 g / 253.8 g/mol

Number of moles = 0.024 mol

Now we will compare the moles of PI₃ with I₂ and P₄.

                I₂              :              PI₃

                  6              :               4

                 0.024       :             4/6×0.024 = 0.02

                  P₄            :               PI₃

                 1                :                4

                 0.01          :               4 × 0.01 = 0.04  mol

The number of moles of PI₃ produced by I₂ are less it will be limiting reactant.

Mass of PI₃ = moles × molar mass

Mass of PI₃ = 0.02 mol × 411.7 g/mol

Mass of PI₃ =  8.234 g

4 0
3 years ago
What happens when you increase the temperature of a reaction?
aalyn [17]
D. More collisions occur and the time required for the reaction decreases
This happens because according to collision theory, when energy (in this case, thermal energy) is applied to particles, they move/vibrate more quickly. 
7 0
3 years ago
Read 2 more answers
Is water wet? or is it just an experience?
polet [3.4K]
WATER is wet to make it a more marketable commodity
7 0
4 years ago
The change of phase from a vapor to a liquid is called _____.
dolphi86 [110]
The change of phase from a vapor to a liquid is called condensation.
Hope this helps~
4 0
4 years ago
Read 2 more answers
If a 2,000-kilogram car accelerates at a rate of 3 meters per second squared,
Likurg_2 [28]

Answer:

Explanation:

assuming there is no friction

fnet=ma

2,000 kg*3m/s=6,000 N

6 0
3 years ago
Other questions:
  • The Power powe and th
    10·1 answer
  • La primera célula de un nuevo ser es
    8·1 answer
  • How is gamma radiation different from other types of electromagnetic radiation
    12·1 answer
  • Question 7-Which of the following is not an acid-base neutralization reaction?
    13·2 answers
  • Which method is the first step when scientists communicate their scientific results?
    11·1 answer
  • Why should scientists be able to replicate an investigation?
    7·1 answer
  • How do elements on the right side of the periodic table differ from elements on the left side of the table?
    10·1 answer
  • Which experiment led to the idea that atoms contain a nucleus?
    13·1 answer
  • QUESTION 19
    5·1 answer
  • When non metals react with other elements and compounds what happens to their valence electrons?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!