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
Sever21 [200]
3 years ago
9

What is the molality (m) of a solution that contains 76.5 g of KCl dissolved in 85.0 g of water?

Chemistry
1 answer:
ladessa [460]3 years ago
5 0

Answer:

76.5g KCl/74.55 grams per mole Kcl = x

molality= x/.085 kg H2O

Explanation:

well remember molality is moles of solute/kilograms of solvent. So it's the moles of KCl over 85 g of h20 converted into kg. if this makes sense.

You might be interested in
Write the net ionic equation for the reaction that occurs when a solution of hydrochloric acid (hcl) is mixed with a solution of
kap26 [50]
Ionic Equation:
H⁺(aq) + Cl⁻(aq) + Na⁺(aq) + CHO₂⁻(aq) → HCHO₂(aq) + Na⁺(aq) + Cl⁻(aq)

Net ionic equation:
H⁺(aq) + CHO₂⁻(aq) → HCHO₂(aq)
5 0
3 years ago
Read 2 more answers
Tell me a hypothesis for the corrosion experiment for iron nails?
Nastasia [14]
The more acidic the substance is, the more the iron nails will corrode (this obviously depends on what your experiment is but hope this helped in some way)
5 0
3 years ago
Properties of elements within a blank on the periodic table change in a predicatable way from one side of the table to the other
Vitek1552 [10]

Answer: oxygen

Explanation:

7 0
3 years ago
Balance this nuclear reaction by supplying the missing nucleus: 249/98 Cf +__ --> 263/106 Sg +4 1/0 n
Sholpan [36]
The total atomic number must be the same on each side. The total mass number must be the same on both side. 

<span>On the RHS, for the mass number, we have 257 + 4 = 261 (the 4 comes from the 4 neutrons). That means the mass number of the missing piece on the LHS is 261 - 247 = 14. </span>

<span>One the RHS, for the atomic number we have a total of 104 since the 4 neutrons are all neutral. On the LHS, we have this: 104 - 98 = 6. </span>

<span>The missing piece is a nucleus of carbon 14. Done in your style, it is 14/6C</span>
5 0
3 years ago
Read 2 more answers
All organic molecules have what element in common?
Sloan [31]
ALL organic molecules have carbon. 
Hope this helps :)
7 0
3 years ago
Read 2 more answers
Other questions:
  • How many grams of CaF2 are present in 1.25 L of a 0.15 M solution of CaF2? How do I find the grams I am confused on that part?
    10·1 answer
  • If 100. mL of 0.400 M Na2SO4 is added to 200. mL of 0.600 M NaCl, what is the concentration of Na+ ions in the final solution? A
    14·1 answer
  • MgBr2 + NaCl -&gt; MgCl2 + NaBr is the reaction between magnesium bromide and sodium chloride. What type of reaction is this?
    7·2 answers
  • The atomic number is determined only by the number of ________ in the nucleus of an atom. But, in a neutral atom it also represe
    6·1 answer
  • is a cation or anion. In the second row, write the symbol for the ion that an atom of fluorine is mostly likely to form and then
    7·2 answers
  • The clown, which your grandparents hire for your 18th birthday, is filling balloons with helium (He) to a volume of 2500 mL.
    14·1 answer
  • PLEASE HELP ME ASAP!
    14·1 answer
  • Instructions:
    14·1 answer
  • True or False; the atomic number always equals the number of protons, neutrons and electrons found in an atom.
    13·1 answer
  • How many moles of a gas are contained in 2.085 L at STP?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!