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
larisa [96]
3 years ago
9

A student dissolves of sodium hydroxide in of water in a well-insulated open cup. He that observes the temperature of the water

rise from to over the course of minutes. Use this data, and any information you need from the ALEKS Data resource,
NaOH(s) rightarrow Na+(aq) + OH-(aq)
You can make any reasonable assumptions about the physical properties of the solution. Note for advanced students: it's possible the student did not do the experiment carefully, and the values you calculate may not be the same as the known and published values for this reaction.
1. Is this reaction exothermic, endothermic, or neither.
2. If you said the reaction was exothermic or endothermic, calculate the amount of neat that was released or absorbed by the reaction in this case.
3. Calculate the reaction enthalpy AW per mole of NaOH.
Chemistry
1 answer:
forsale [732]3 years ago
7 0

Answer:

This question is incomplete

Explanation:

This question is incomplete but the answer to (1) and steps involved in calculating (2) and (3) will be discussed in the attachment

1. The reaction is an exothermic reaction because heat was given off. Exothermic reaction is a reaction in which heat is released from a reaction into the surroundings. And according to the question, the student observed <em>that the temperature of the water increased during the course of the minutes.</em>

Download docx
You might be interested in
What element is solid at room temperature shiny malleable and a good conductor of heat
jekas [21]
From what i remember i believe it’s , D silicon
7 0
2 years ago
Do only chemical reactions get colder/hotter?
qwelly [4]
I did it for you I was at my moms and my dad and my mom and I were talking to
8 0
3 years ago
25. How is the information in an image sent through the digital signal system?
lawyer [7]
By binary codes or a whole image depending on the description of the image.
4 0
2 years ago
Read 2 more answers
A chemist prepares a solution of silver(I) nitrate by measuring out of silver(I) nitrate into a volumetric flask and filling the
leva [86]

Answer:

3.33 M

Explanation:

It seems your question is incomplete, however, that same fragment has been found somewhere else in the web:

" <em>A chemist prepares a solution of silver nitrate (AgNO3) by measuring out 85.g of silver nitrate into a 150.mL volumetric flask and filling the flask to the mark with water.</em>

<em>Calculate the concentration in mol/L of the chemist's silver nitrate solution. Be sure your answer has the correct number of significant digits.</em> "

In this case, first we <u>calculate the moles of AgNO₃</u>, using its molecular weight:

  • 85.0 g AgNO₃ ÷ 169.87 g/mol = 0.500 mol AgNO₃

Then we<u> convert the 150 mL of the volumetric flask into L</u>:

  • 150 / 1000 = 0.150 L

Finally we <u>divide the moles by the volume</u>:

  • 0.500 mol AgNO₃ / 0.150 L = 3.33 M
4 0
3 years ago
What substances make up water?
ziro4ka [17]
A water molecule consists of three atoms; an oxygen atom and two hydrogen atoms, which are bond together like little magnets.


An iron pot is made up of only one substance, iron. Iron is an element classified as a transition metal


Iron. Elementsare pure substances that are made up of one kind of atom. Pizza is not an element because it is a mixture of many substances. Water is a pure substance, but it contains two kindsof atom: oxygen and hydrogen.
8 0
3 years ago
Read 2 more answers
Other questions:
  • You are working with a specific enzyme-catalyzed reaction in the lab. You are a very careful experimentalist, and as a result, a
    11·1 answer
  • How many moles of electrons are transferred in the folllowing balanced chemical equation 4fe + 3o2?
    14·1 answer
  • 4. When benzene reacts with 1-chloro-2,2-dimethylpropane (neopentyl chloride) in the presence of aluminum chloride, the major pr
    11·1 answer
  • the grams of carbohydrate in one apple if the apple has no fat and no protein and provides 72 kcal of energy
    8·1 answer
  • How can I calculate the mass percent of carbon, nitrogen and oxygen in acetamide, C2H5NO?
    12·1 answer
  • Which of the following equations is NOT balanced properly? Which of the following equations is NOT balanced properly? Cr2(SO4)3
    10·1 answer
  • What quantity is represented by the metric system prefix deci-
    13·1 answer
  • Is it possible to identify something as an element, compound or pure substance
    15·1 answer
  • Aqueous copper (II) sulfate reacts with aqueous potassium fluoride to produce
    10·1 answer
  • Why do you add hydroxide to your hexanediamine solution? what would occur if you did not add it?.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!