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
Tanzania [10]
3 years ago
10

Please...help!

Chemistry
2 answers:
dimaraw [331]3 years ago
8 0
3.B
5.C

THERE!Hope it helps
Taya2010 [7]3 years ago
7 0
3. The answer is B. 11. This is because there are the same amount of electrons and protons in an atom, and since there are 11 protons, there are 11 electrons.
5. The formula H2O means that there are 2 hydrogen atoms (because the 2 is after the H), and 1 oxygen atom, so the answer is C.
Hope this helps!
You might be interested in
Which of the following compounds has an atom with an unfilled valence shell of electrons? And why?A. H3O+B. BF3C. CH3OHD. NaI
adoni [48]

Answer: BF3

Explanation: boron needs 4 electron to obtain octet and Fluorine has just one. For the valence shell to be completely filled it will have to form BF4- with 4 fluorine atom surrounding it.

8 0
3 years ago
9. Ibuprofen contain which of the following two functional groups: (1 point)
stira [4]

Answer:

A and C

I hope this helps you:)

4 0
3 years ago
What is nuclear fusion what role does it play in the sun
GalinKa [24]

Answer:

Nuclear fusion is when two atomic nuclei combine and form one nucleus. Nuclear fusion generates all of the Sun's energy. Inward pulling by the Sun's gravity is counteracted by outward pushing by the Sun's nuclear fusion; this balance keeps the sun from collapsing or exploding.

Explanation:

5 0
2 years ago
Read 2 more answers
PLEASE ANSWER BEFORE JAN 1, 2020!!!
True [87]

Answer: option C - The cells produced at the end of meiosis contain half the number of chromosomes as the parent cell

Explanation:

Meiosis is also known as REDUCTIVE DIVISION, simply because a parent cell with diploid number of chromosome (46) is divided into four daughter cells with haploid number of chromosome (23)

Thus, ONLY option C correctly defines meiosis

6 0
3 years ago
Read 2 more answers
Which organelle is marked with an X?
Natalija [7]
The Lysosome is marked with an x
4 0
3 years ago
Other questions:
  • Which of the following is the correct Lewis structure for ammonia ?
    13·2 answers
  • What is a material which cannot be broken down or changed into another substance using chemical matters?
    13·1 answer
  • What can group numbers on the periodic table help you determine?
    6·1 answer
  • An ice calorimeter measures quantities of heat by the quantity of ice melted. How many grams of ice would be melted by the heat
    13·1 answer
  • Describe the relationship between intrapulmonary pressure, atmospheric pressure, and air flow during normal inspiration and expi
    7·1 answer
  • How do the chemical properties of the halegons compare to those of the noble gases
    5·2 answers
  • Lysosomes are important for<br> digestion<br> cell division<br> reproduction<br> protein synthesis
    11·2 answers
  • Help this is so confusing like
    9·2 answers
  • Which statement best describes alpha decay?(1 point)
    14·1 answer
  • What compounds can you find in a whole wheat bread
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!