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
morpeh [17]
3 years ago
7

A student makes the following two claims about chemical reactions:

Chemistry
1 answer:
Svet_ta [14]3 years ago
7 0
I would agree with the second one, not the first. You can't always see the chemical reaction, and it isn't always sudden. But the second claim is true. 
You might be interested in
How to tell the formula for elements compounds and mixtures?
Kay [80]
Search it up on google
3 0
3 years ago
What is the formula for tetrabromine decafluoride
Lyrx [107]

Answer:

Br_{4}F_{10}

The prefix "Tetra" implies 4 Bromine atoms. The prefix "Deca" implies 10 fluorine atoms.

4 0
3 years ago
Cacodyl, which has an intolerable garlicky odor and is used in the manufacture of cacodylic acid, a cotton herbicide, has a mass
Papessa [141]

Answer:

The molecular formula of cacodyl is C₄H₁₂As₂.

Explanation:

<u>Let's assume we have 1 mol of cacodyl</u>, in that case we'd have 209.96 g of cacodyl and the<u> following masses of its components</u>:

  • 209.96 g * 22.88/100 = 48.04 g C
  • 209.96 g * 5.76/100 = 12.09 g H
  • 209.96 g * 71.36/100 = 149.83 g As

Now we convert those masses into moles:

  • 48.04 g C ÷ 12 g/mol = 4.00 mol C
  • 12.09 g H ÷ 1 g/mol = 12.09 mol H
  • 149.83 g As ÷ 74.92 g/mol = 2.00 mol As

Those amounts of moles represent the amount of each component in 1 mol of cacodyl, thus, the molecular formula of cacodyl is C₄H₁₂As₂.

3 0
3 years ago
Which of these would provide the best evidence for the theory of evolution?
Nikolay [14]

C.

evolution is the change a species goes through

3 0
3 years ago
Plz 50 points and brainliest but give me the true answer with steps
Ilya [14]

Answer:

i think A...  

Explanation:

4 0
3 years ago
Other questions:
  • A weather balloon of known initial volume is released. The air pressures ar its initial and final altitudes are known. Why can't
    15·2 answers
  • Given that cao(s) + h2o(l) → ca(oh)2(s), δh°rxn = –64.8 kj/mol, how many grams of cao must react in order to liberate 525 kj of
    7·1 answer
  • QUICK!
    13·2 answers
  • Electrons have been shown to have both wavelike and particle-like properties. True or False
    13·2 answers
  • How do changes to genes affect the traits of an organism?
    6·1 answer
  • Consider the tables below.
    7·2 answers
  • What is the chief chemical property of ethers?
    10·1 answer
  • The measure of a right angle is
    13·1 answer
  • Does temperature stay the same when heat energy increases?
    10·2 answers
  • Cis-platin is a chlorine-containing chemotherapy agent with the formula pt(nh3)2cl2. What is the mass of one mole of cis-platin?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!