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
lions [1.4K]
3 years ago
5

Can SOMEONE HELPPPPPP?????

Chemistry
1 answer:
Gala2k [10]3 years ago
6 0

Answer:

the answer is 28.086amu

Explanation:

There are three isotopes of silicon. They have mass numbers of 28, 29 and 30. The average atomic mass of silicon is 28.086amu. sorry it took me so long.

You might be interested in
How many grams of H2 are needed to produce 13.33g of NH3?
Zanzabum

The reaction to form NH3 is : N2 + 3H2-> 2NH3 12,33g NH3 is 12,33/17,03=0,3 =0,724 moles of NH3 moles NH3. So you need 1,5*0,724 = 1,086 moles H2 1,086*2,016 = 2,189 g of H2 is needed ro form 12,33 g NH3

3 0
4 years ago
Five cell parts are listed below. Correctly match each cell part with its function. allows plant cells to trap light energy in o
topjm [15]
Vacuole - Stores Nutrients and Water.
Nucleolus - Where Ribosomes are made.
Chloroplasts - allows plant cells to trap light energy.
Cell Membrane - Controls which substances enter or exit a cell.
Cell Wall - Provides strength and Support for plant cells.
Hope I helped!

6 0
3 years ago
Predict the chemical formula of butyne, having one carbon-carbon triple bond.
Svet_ta [14]
Butyne is the alkyne with four carbon atoms, and, as the question states, it has one carbon-carbon triple bond. The general formula of an alkyne is CnH2n-2, that means that when there are 2 carbons the formula is C2H2, when there are 3 carbons the formula is C3H4, and when there are 4 carbons the formula is C4H6. So, <span>butyne is C4H6 or " CH3-C (triple bond) C - CH3" (note that I wrote the phrase triple bond between the two Cs in the middle of the formula because there is no way to draw the three hyphens stacked one over other").</span>
3 0
3 years ago
Each element in the periodic table is assigned an atomic number. This number is the same as ___.
Evgen [1.6K]

answer is D

hope that helped:)

4 0
3 years ago
Read 2 more answers
Please help me I’ll mark you brainiest
777dan777 [17]
C is the correct answer. Calcium chlorate is aqueous but barium sulfide forms a precipitate, so a reaction would occur
5 0
3 years ago
Other questions:
  • Explain the process of separating a mixture consisting of iron fillings and sand in a plastic bowl.
    8·2 answers
  • To show the electron configuration for an atom, when would it be better to use an orbital notation than to use a written configu
    9·1 answer
  • What is made of only one type of atom?
    12·2 answers
  • What does A pH of 10 denote?
    13·2 answers
  • The component which dissolves in a solution is called the?
    12·1 answer
  • Which of the following statements is the most accurate? A. Energy transfers are never 100% efficient. B. Energy transfer is comp
    14·2 answers
  • What is Darwin's name for species that do not appear to have changed for millions of years?
    6·1 answer
  • Work and energy unit test
    8·1 answer
  • Because the hot air balloon is _____ than the surrounding air, it will
    10·2 answers
  • How does the lithosphere affect wildfires
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!