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
alexgriva [62]
2 years ago
12

Predict the final temperature of 3.50 kg of water in a calorimeter if the water is at 27.5°C before 0.77 oz of noodles containin

g 81.0 kcal are burned
Chemistry
1 answer:
BaLLatris [955]2 years ago
6 0

The final temperature of the water is determined as 50.55 ⁰C.

<h3>Final temperature of the water</h3>

The final temperature of the water is determined from the following calculations;

Q = mcΔθ

Δθ = Q/mc

where;

  • Q is the amount of energy = 81 kcal = 338904 J
  • c is specific heat capacity of water = 4,200 J/kgC

Δθ = 338904 /(3.5 x 4200)

Δθ = 23.05 °C

Final temperature = T₁ + Δθ

Final temperature = 27.5°C + 23.05 °C = 50.55 ⁰C.

Learn more about final temperature here: brainly.com/question/16559442

#SPJ1

You might be interested in
What is chalk made of?
aksik [14]
I think it is calcium carbonate, from sedimentary rocks and such
7 0
3 years ago
Read 2 more answers
Based on the molar masses, how can you tell that an equation is balanced?
Ilya [14]
When you work with molar mass, you solve for the quantity of ''Moles'' within the substance by converting Mass. The way you can tell the equation is balanced would be by knowing whether the moles were equivalent on both sides or not. Therefore, if they are equal, it is balanced considering you have the same amount of moles on each side of the equation.
7 0
3 years ago
Read 2 more answers
An industrial chemist studying bleaching and sterilizing prepares several hypochlorite buffers. Find the pH of the following buf
8_murik_8 [283]
Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.

<span> I got (a). The answer was 7.53. But when I try to solve (d), I keep getting the wrong answer. I subtracted the moles of NaOH from the acid and added the moles to the base. Then I did Ka = (x*([NaClO]+x))/([HClO - x) and then I found the pH</span>

8 0
2 years ago
Enter the atomic symbol, including mass number and atomic number, for iodine-125.
ICE Princess25 [194]

Answer:

Explanation:

Iodine - 125

The atomic symbol of iodine is ¹²⁵₅₃ I

The symbol for iodine is I

The atomic number of iodine is 53,

and the atomic mass of iodine is 125 .

<u>The representation of the atomic symbol is as, the atomic mass is written in uppercase and the atomic number is written in lower case , followed by the symbol of the element .</u>

Iodine is a radio active element , used for many biological process .

It is the second largest -lived radioisotope of iodine .

The first is iodine-129 .

3 0
3 years ago
Acidity is a measure of the amount of dissolved hydroxide ions in a solution.
Gekata [30.6K]

The concentration of hydrogen ions in a solution is a measure of its acidity. So the correct option is (b) false.

When an Arrhenius acid is dissolved in water, hydrogen ions are produced:

H+(aq) + A- = HA + H2O (aq)

Here, H+ is the hydrogen cation, A- is the solvated anion, also known as the conjugate base, and HA is the non-dissociated acid. When an Arrhenius base is dissolved in water, hydroxide ions are produced:

BOH + H2O → B+(aq) + OH-(aq)

Is a material with at least one hydrogen atom that has the ability to split apart in an aqueous solution to produce an anion and an H + ion (a proton), creating an acidic solution. Bases are substances that, when dissolved in water, create hydroxide ions (OH) and a cation, resulting in a basic solution.

Learn more about hydrogen here:

brainly.com/question/16979348

#SPJ4

4 0
1 year ago
Other questions:
  • Dicing potatoes is a physical change. true or false?
    13·2 answers
  • All atoms of the same element have the same
    9·1 answer
  • What is the base metric unit for measuring volume
    11·1 answer
  • What would pressure be if volume was 0
    8·1 answer
  • The rate at which a reaction is proceeding at a specific point in time is called the:______
    12·2 answers
  • Animals adapted for lack of water and extremes in temperature are found in which biome?
    14·2 answers
  • Convert the following word equation into a formula equation
    13·2 answers
  • Changing the position of the .. increases or decreases your effort ..
    6·1 answer
  • Which of these compounds would most likely be found in a deposit of natural gas?
    6·1 answer
  • in a fatty acid, the hydrogen atoms are of the double bond, which produces a kink in the carbon chain. in a fatty acid, the hydr
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!