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
wolverine [178]
2 years ago
9

How many silicon atoms are there in 28.09 g of Si?

Chemistry
2 answers:
irinina [24]2 years ago
8 0

Explanation:

28.09 g of silicon contains 6.02×1023 6.02 × 10 23 silicon atoms.

mixer [17]2 years ago
3 0

1 mole = 6.02.10²³ particles (atoms, moleculs, ions)

mole Si = mass : molar mass

mole Si = 28.09 : 28.09 = 1

number of atoms = 1 x 6.02.10²³ = 6.02.10²³ atoms

You might be interested in
Research help?
prisoha [69]

Answer:

They tenderize the product by coating and weakening the gluten bonds within the structure.

Even though they contain little or no moisture, they provide the illusion of wetness. ...

They enable browning.

They help move heat through the product, perpetuating the baking process.

Explanation:

4 0
3 years ago
The equation for molarity, M , is
Airida [17]

A solution with a molarity of 7.65 mol/L and a volume of solution of 0.690 L, contains 5.28 moles of solute.

<h3>What is molarity?</h3>

Molarity is the number of moles of solute per liter of solution.

A solution has a molarity (M) of 7.65 mol/L and a volume (V) of 0.690 L. We can calculate the number of moles of solute (n) using the following expression.

M = n / V

n = M × V = 7.65 mol/L × 0.690 L = 5.28 mol

A solution with a molarity of 7.65 mol/L and a volume of solution of 0.690 L, contains 5.28 moles of solute.

Learn more about molarity here: brainly.com/question/26873446

#SPJ1

7 0
1 year ago
NO2 is added to the reaction to speed it up. In which form would this substance be a homogeneous catalyst for this reaction?
sammy [17]

Answer: The correct answer is A

Explanation:

5 0
3 years ago
Which of the following happens to the particles when the temperature of liquid water drops?
Vikki [24]

Answer:

The Kinetic energy decreases

Explanation:

because the speed of the molecules slows down.

6 0
3 years ago
The part in the middle with a coil of wire wrapped around a metal shaft is part of an electric motor. What is it?
evablogger [386]

Answer:

  rotor

Explanation:

The part of the motor being pointed to is called the <em>rotor</em>.

4 0
3 years ago
Read 2 more answers
Other questions:
  • What is the difference between a cesium atom (Cs) and a cesium ion (Cs+1)?
    13·1 answer
  • How can you tell if an electric charge is present?
    13·1 answer
  • If a student needs to make exactly 2.5 liters of
    11·1 answer
  • Phosphorus pentafluoride, PF5, acts as a __________ during the formation of the anion PF−6. Select the correct answer below: A.
    6·1 answer
  • (please help ;-; 30 points)This is a diagram developed by Ejnar Hertzprung and Henry Russell that shows how the magnitude, tempe
    13·1 answer
  • What is accretion?????
    9·2 answers
  • It is used to lift water from a well​
    5·1 answer
  • Na2CO3 + CaCl2•2H2O -&gt; CaCO3 + 2NaCl + 2H2O
    15·1 answer
  • A trait that can be modified by diet and lifestyle is one’s lifespan<br><br> True or False?
    5·2 answers
  • A 30:70 (mole %) ratio of acetone:water is heated to 54.36 ∘C at 760 mmHg. What is the total vapor pressure of the system? The v
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!