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
tatiyna
4 years ago
8

A typical carbon monoxide detector will sound it’s alarm if it detects 0.050 g of CO, HOw many molecules of carbon monoxide are

need to sound the alarm
Chemistry
1 answer:
noname [10]4 years ago
6 0

1.10 x 10²¹molecules

Explanation:

Given parameters:

Mass of CO  =  0.05g

Unknown:

Number of molecules = ?

Solution:

To solve this problem, we must understand that the mole of substance is a unit that contains the Avogadro's number of particles.

    Now we need to find the number of moles of CO;

Number of moles of CO = \frac{mass}{molar mass}

Molar mass of CO = 12 + 16 = 28g/mol

Number of moles = \frac{0.05}{28}  = 0.0018moles

Number of molecules of CO = 0.0018  x 6.02 x 10²³ = 1.10 x 10²¹molecules

learn more:

Number of molecules brainly.com/question/10818009

#learnwithBrainly

You might be interested in
Do you think precipitation has a greater impact on the rate of chemical weathering or mechanical weathering? Explain
nexus9112 [7]

Greater rainfall has an greater increase on the rate of chemical weathering. Rain is a form of precipitation.

6 0
3 years ago
In the mathematical equation showing that pressure (P) multiplied by volume (V) remains equal to a constant (k) pressure and vol
hram777 [196]

Answer:

Inversely

Explanation:

pV = k

When p increases, V must decrease for k to remain constant.

When V increases, p must decrease for k to remain constant.

When the product of two variables is a constant, they are inversely proportional  to each other.

3 0
3 years ago
Which substance, when dissolved in water, forms a solution that conducts an electric current?
Margarita [4]
Missing question: 
<span>(1) C2H5OH (3) C12H22O11
(2) C6H12O6 (4) CH3COOH.

Answer is: 4) CH</span>₃COOH, acetic acid.
In water, acetic acid dissociates on ions, so it can conduct electricity:
CH₃COOH(aq) ⇄ CH₃COO⁻(aq) + H⁺(aq).
When we put electrodes (cathode and anode) in acetic acid solution, positive and negative ions migrate to electrodes.<span>
Negative acetate ions go to positive electrode and gives electrons to electrode.
<span>Positive hydrogen ions go to negative electrode and gain electrons.</span></span>
6 0
3 years ago
How can there be more than 1000 different atoms when there are only about 100 different elements?
LekaFEV [45]
Actually, there are only about 100 atoms that have been yet discovered. But each element has many different kinds of atom. For instance, carbon. Do you know carbon has more than 30 or 50 different types of atoms? Well, how? There are isotopes. Don't think that there is only one carbon atom which has 6 electrons and 6 protons and 6 neutrons. There are more. C-13 has 6 electrons and 6 protons and 7 neutrons. While, C-14 has 6 electrons and 6 protons and 8 neutrons. I just showed you three stable isotopes of carbon(element). But, what is really an isotope?? Did you notice that all of these atoms had the same number of protons and electron but different numbers of neutrons? This is really an isotope. Well, if an atom takes a few more electrons or gives off a few electrons, it still stays the same element/ atom type. Just like that an element can have atoms of different neutron number. It may be less or more. It doesn't affect the atom much: just makes an isotope. But it does affect the atomic mass number or radioactivity of an atom. So, an element can have many different forms of isotopes of its atoms. In this way, being only 100 atoms, there can 1000 atoms or (more than that!). 

To make it more clear-

Definition of ISOTOPE: <span>any of two or more forms of a </span>chemical<span> element, having the same number of protons and electrons in the nucleus, or the same atomic number, but having different numbers of neutrons</span>

HOPE YOU UNDERSTOOD THE MATTER:-))


8 0
3 years ago
Read 2 more answers
Balance the following H2 SO4 + NaOH ==== NaSO + H2O​
katrin [286]

Answer:

H2SO4 + 2NaOH --->   Na2SO4 + 2H2O

Explanation:

H2SO4 + NaOH --->   Na2SO4 + H2O

                Na1    --->     2Na

H2SO4 + 2NaOH --->   Na2SO4 + H2O

2H   +   2H =  4H       ---->                 2H

H2SO4 + 2NaOH --->   Na2SO4 + 2H2O

     4O  + 2O         ----->          4O   +     2O

4 0
3 years ago
Other questions:
  • Write the concentration equilibrium constant expression for this reaction. 2cui (s) + i2 (aq) → 2cu+2 (aq) + 4i− (aq)
    14·2 answers
  • CO is a primary pollutant. <br> a. True<br> b. False?
    7·2 answers
  • Which answer below correctly identifies the type of change and the explanation for the boiling of water? physical change because
    10·2 answers
  • Which of the following are the bark, roots, seeds, buds or berries of an aromatic plant?
    6·1 answer
  • Why do different chemicals emit different colors of light?​
    13·1 answer
  • A balloon has a volume of 10,500 liters, and the temperature is 15°C. If the temperature were -25°C, what would the volume of th
    10·2 answers
  • Consider an electron with a mass of 9.11 x 1051 kg and a 100.0 g tennis ball that are both moving with a velocity of 70.0 m s1.
    5·1 answer
  • What do wind turbines do to moving air? ​
    15·2 answers
  • How many moles of ammonia are produced by 5 moles of hydrogen.
    12·1 answer
  • What does food provide to organisms?<br><br> A-homeostasis<br> B-shelter<br> C-energy<br> D-air
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!