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
kondaur [170]
3 years ago
5

Can you guys help me with 8&9 THANK YOUU

Chemistry
1 answer:
zlopas [31]3 years ago
8 0
number 8 the list is hydrogen,magnesium,silicon and oxygen and there are 4elements
You might be interested in
Which of the five type of equilibrium problems best applies to this question: Consider the following reaction at equilibrium. Wh
andreev551 [17]

Answer:

d

Explanation:

3 0
3 years ago
The solubility of copper(i) chloride is 3.91 mg per 100.0 ml of solution. calculate ksp for cucl (cucl=99.00 g mol-1).
garri49 [273]
Convert  Mg  to  grams
1g =1000mg  what  about  3.91  Mg
=  3.91mg  x  1g/1000mg=  3.91  x10^-3 g
moles= mass/molar mass
that  is  3.91  x10^-3g  /99 g/mol=3.95 x10^-5moles
concentration=   moles  /  vol   in  liters

that  is  3.95  x10^-5/100  x1000=  3.94  x10^-4M

equation for  dissociation  of  CUCl=   CUCl---->  CU^+   +Cl^-

Ksp=(CU+)(CI-)
that  is  (3.95  x10^-4)(3.95  x10^-4)
Ksp=  1.56  x10^-7
3 0
3 years ago
Read 2 more answers
Calculate the equilibrium constant K for the following reaction: H2(g) +
SIZIF [17.4K]

Answer:

192.9

Explanation:

From the question,

Ke = [HCL]²/[H₂][CL₂].......................... Equation 1

Where Ke = Equilibrium constant.

Given: [HCL] = 0.0625 M, [H₂] = 0.0045 M, [CL₂] = 0.0045 M

Substitute these values into equation 1

Ke = (0.0625)²/(0.0045)(0.0045)

ke = (3.90625×10⁻³)/(2.025×10⁻⁵)

ke = 1.929×10²

ke = 192.9

Hence the equilibrium constant of the system = 192.9

5 0
3 years ago
Help plz:)))I’ll mark u Brainliest
4vir4ik [10]
Matter is anything that has mass and occupies space, It can exist in 3 states, or phases: solid, liquid, and gas.

Solid molecules are closely packed together and retain a fixed shape.

Liquid molecules aren't packed very closely, and take the shape of the bottom of the container.

Gas molecules are far apart and fill the container

completely.
7 0
2 years ago
Read 2 more answers
A ___________________________ is made of two or more different substances.
Dmitry [639]
Mixture/ compound
hope this helps
6 0
3 years ago
Other questions:
  • Fe(s) + 2HCl(aq) --> FeCl2(aq) + H2(g)
    12·1 answer
  • How much organic chemistry do i need to know for polymers?
    10·1 answer
  • <img src="https://tex.z-dn.net/?f=H_2%28g%29%20%2B%20I_2%28g%29%20%5Clongrightarrow%202HI%28g%29" id="TexFormula1" title="H_2(g)
    11·1 answer
  • Divide 98.66 grams by 10.3 mL
    15·1 answer
  • A colligative property of a solution is one that depends 1. on the identity of the solute and the concentration of the solution.
    11·1 answer
  • Not a very good question but if anyone is good at chemistry, can you leave some tips below? I'm having lots of trouble in that s
    13·1 answer
  • Help please!!
    11·1 answer
  • How many grams of KOH are required to prepare 500. mL of 0.450 KOH solution?
    5·1 answer
  • Compare the orbital notations of the substances investigated in this experiment with their attraction to the magnet. What unique
    9·1 answer
  • Emperical formula for Al³⁺
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!