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
vlada-n [284]
3 years ago
10

IN A TEST! NEED HELP

Chemistry
2 answers:
Debora [2.8K]3 years ago
8 0

Answer: A

Explanation:

iragen [17]3 years ago
8 0
Hey the correct answer is A good luck
You might be interested in
Joanne has to undergo a________ in order to repair her breasts.
IrinaVladis [17]
Joanne has to undergo a Breast Reconstruction Surgery in order to repair her breasts.
3 0
3 years ago
4.2g of cerium reacted with oxygen to form 5.16g of an oxide of cerium. Find
olganol [36]

Answer:

CeO₂

Explanation:

Hello!

In this case, since we are given the mass of both cerium and the cerium oxide, we can first compute the moles of cerium and the moles of oxygen as shown below:

n_{Ce}=4.2gCe*\frac{1molCe}{140.12gCe}=0.03molCe\\

m_O=5.16g-4.2g=0.96gO\\\\n_O=0.96g*\frac{1molO}{16.0gO} =0.06molO

Now, we simply divide each moles by 0.03 as the fewest moles in the formula to obtain the simplest formula (empirical formula) of this oxide:

Ce=\frac{0.03}{0.03}=1\\\\O =\frac{0.06}{0.03}=2

Thus, the formula turns out:

CeO_2

Regards!

6 0
3 years ago
Write the half-reactions as they occur at each electrode and the net cell reaction for this electrochemical cell containing tin
mojhsa [17]
  The  half  reactions    as  they  occur   at  each  electrode

is  as  follows

at  the  anode  Sn(s)  =sn^2+(aq)  +  2e  -
at  the  cathode  2  ag^+(aq)   + 2e -  =  2Ag (s)

net  cell  reaction  =   Sn (s)  +  2Ag^+(aq)  =  sn^2+ (aq) +  2  Ag  (s)
8 0
3 years ago
Which pair of elements do you expect to be most similar in their chemical properties?
Dmitry [639]
Isotopes of carbon or any element
7 0
3 years ago
Imprints of the shells of ocean clams are often found in the rocks of the Appalachian Mountains. What do these imprint fossils M
Anit [1.1K]
A. It is the most reasonable answer
7 0
2 years ago
Other questions:
  • Explain how the atoms of one element differ from those of another element. explain how the atoms of one isotope differ from thos
    13·1 answer
  • What is volcanoes be my friend
    7·2 answers
  • What changes might you observe in a rock as it is weathered
    12·2 answers
  • How to convert 13.14 in to ft
    7·1 answer
  • if you are working with a radioactive source emitting particles of several kinds all positively charged not necessarily of the s
    9·1 answer
  • In his experiment on spontaneous generation, Louis Pasteur changed only one thing between his experimental groups: whether or no
    13·1 answer
  • How does adding a lone pair affect the position of existing atoms and lone pairs?
    10·2 answers
  • Am i right??<br><br>if i'm not pls correct me if i am tell me too
    7·2 answers
  • What are answers to the questions shown below?
    15·1 answer
  • **URGENT!!*** Compare lithium (Li) in group Ia (1) to fluorine (F) is in group VIIa (17). Does each element want to give or take
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!