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
Lubov Fominskaja [6]
3 years ago
8

A solution is formed by mixing 0.400 mol NaOH

Chemistry
1 answer:
leonid [27]3 years ago
6 0

Answer:

The correct answer is m= mol solute kg soivent

Explanation:

Molality is a measure of concentration, which indicates the moles of solute (in this case sodium hydroxide) in 1kg of solvent .

In this case:

0,800 kg water-----0,400 mol NaOH

1 ,000 kg water ---x=(1 ,000 kg water x 0,400 mol NaOH)/0,800 kg water

x=0,5 mol NaOH---> <em>The solution is 0,5 molal (0,5 m)</em>

You might be interested in
What is the mass in 0.25 mol of SO2
gulaghasi [49]

0.25 mols SO₂ x 64.058 g SO₂/ 1 mol SO₂ = 16.0145 g SO₂

molar mass of SO₂: 64.058 g

answer: 16 grams of SO₂ (2 sig figs)

check the question to see if its asked for a specific unit for mass (grams or kilograms, if they asked for kiligrams then convert 16 grams to kilograms by dividing it by 1000)


5 0
3 years ago
What are adipoyl chloride used for or uses?
Alexxandr [17]

Answer:

Explanation:

It is a colorless liquid. It reacts with water to give adipic acid. It is prepared by treatment of adipic acid with thionyl chloride.

Adipoyl Chloride can be used in the synthesis of nylon. Also it is used in the synthesis of chiral polymer for membrane application.

3 0
3 years ago
In order to design an experiment, you need a ____ about the scientific question you are trying to answer. A. decision B. procedu
kolbaska11 [484]

The correct answer is option C, that is, hypothesis.  

The hypothesis is the starting building block in the scientific method. It is also illustrated as an educated guess, based on previous observation and knowledge. A hypothesis refers to a recommended solution for an unexplained event, which does not fit into the present accepted scientific theory.  

The fundamental concept of a hypothesis is that there is no pre-determined result. For a hypothesis to be considered as scientific hypothesis, it has to be something, which can be refuted or supported via carefully crafted observation or experimentation.  


4 0
3 years ago
Identify all statements that accurately describe the structure of the pyruvate dehydrogenase ( PDH ) complex.
Nostrana [21]

Answer:

The statements that correctly describes pyruvate dehydrogenase includes:

- Several copies each of E 1 and E 3 surround E 2.

-A regulatory kinase and phosphatase are part of the mammalian PDH complex.

-E 2 contains three domains.

Explanation:

Pyruvate dehydrogenase is a hydrolase key enzyme in glucose metabolism which converts pyruvate to acetyl- ChoA. It also forms a complex that catalyzes an irreversible reaction that is the entry point of pyruvate into the TCA cycle. Pyruvate dehydrogenase complex contains E1, E2 and E3 enzymes that transform pyruvate, NAD+, coenzyme A into acetyl-CoA, CO2, and NADH. Also, A regulatory kinase and phosphatase are part of the mammalian PDH complex and E 2 contains three domains.

5 0
3 years ago
What causes clothes from a dryer to stick together?
leva [86]
Different fabrics rub together, and electrons may rub off 
8 0
3 years ago
Other questions:
  • A weight of 100 pounds moved a distance of 12 feet equals 120 240 1200 ft.-lbs. of work.
    8·1 answer
  • You can determine the concentration of acids or bases in a solution by using___________.
    10·1 answer
  • 200 grams of an organic sample which contains only carbon, hydrogen and oxygen is analyzed and found to contain 97.30grams of ca
    12·1 answer
  • When fossil fuels are burned, they produce______________, the main greenhouse gas responsible for global warming trends.
    7·2 answers
  • For this reaction S2O82-(aq) 3I-(aq)----2SO42-(aq) I3-(aq), we can use spectrophotometer to decide the concentration due to___is
    14·1 answer
  • How hot Will a 2.3L balloon have to get to expand to a volume of 250L?
    9·1 answer
  • Which of the following is an example of an endothermic process? (2 points) Gasoline burning in a combustion engine A chocolate b
    8·2 answers
  • Na3PO4+_CaCl2--&gt;_NaCl + __Ca3(PO4)2​. NEED HELP ASAP
    7·1 answer
  • Identify the number of core and valence electrons for each atom.
    8·1 answer
  • Write the net ionic equation for the reaction that occurs, if any, when gold is placed in a solution of hydrobromic acid
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!