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olya-2409 [2.1K]
3 years ago
14

Can someone please help me with this question??

Chemistry
1 answer:
dsp733 years ago
5 0
I think the answer is b
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Calling all chemists...please help me!  Ive attached a screen shot of the problem
Olin [163]
This is an acid-base reaction where HF is the acid and H2O is the base (it's amphoteric and can be an acid or a base). The products would then H3O+ (the conjugate acid) and F- (the conjugate base). Now, we can simply construct a reaction using the found products and reactants. This acid-base reaction would be HF + H2O <--> H3O+ + F-.

Hope this helps!
6 0
3 years ago
50.0 mL of an HNO^3 solution were titrated with 36.90 mL of a 0.100 M LiOH solution to reach the equivalence point. What is the
NISA [10]

Answer:

0.0738 M

Explanation:

HNO3 +LiOH = LiNO3 + H2O

Number of moles HNO3 = number of moles LiOH

M(HNO3)*V(HNO3) = M(LiOH)*M(LiOH)

M(HNO3)*50.0mL = 0.100M*36.90 mL

M(HNO3) = 0.100*36.90/50.0 M = 0.0738 M

6 0
3 years ago
The teacher shows students a pictorial model of an atom. Which element is
frutty [35]

Answer:

C. Fluorine because the model has 9 protons which is represented by the atomic number

Explanation:

We usually identify an element by the number of protons in them. The number of protons is the atomic number of an atom.

  • Every atom has a specific number of protons in them.
  • This number of protons is the atomic number.
  • According to the periodic law, atoms are arranged on the periodic table based on their atomic number.
  • The given fluorine atom has 9 protons which represents the atomic number of the atom.
  • This way, the given number clearly shows the right model for identifying the chemical specie.
4 0
3 years ago
A student was asked to name an element that reacts like chlorine (Cl). Which element should the student name?
kramer

Answer:

Bromine (BR2)

Explanation:

Cl2 + Br2 = ClBr

5 0
3 years ago
Why does the rate of most reactions decrease over time?
lions [1.4K]

hi there

your answer to this is :

When you lower the temperature, the molecules are slower and collide less. That temperature drop lowers the rate of the reaction. that is a greater density of molecules increases the number of collisions. When you decrease the pressure, molecules don't hit each other as often and the rate of reaction decreases.

i hope this helps you  out

the source  u needed was  the question enter it  in  google

have a great  afternoon

FaithRawlins14

3 0
3 years ago
Read 2 more answers
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