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
NISA [10]
3 years ago
10

Jill said that when you are standing in front of a fire you are warm because you release the coolness of your body to the heat o

f the fire.
Greg said that when you are standing in front of a freezer with the door open you feel cool because you are releasing your heat into the freezer.
Who has made the accurate statement regarding heat transfer?

Jill is correct.
Greg is correct.
Both Jill and Greg are correct.
Neither Jill nor Greg are correct.
Chemistry
1 answer:
Tju [1.3M]3 years ago
6 0
Greg is correct, Jill is wrong. Only heat can be released.
You might be interested in
What is the mass in grams of one formula unit of aluminum chlonde?
In-s [12.5K]
Molar mass = 133.34 g/mol
5 0
3 years ago
How does one determine a percent composition from an empirical
rodikova [14]
_______________THE ANSWER IS D______________
3 0
2 years ago
Answer whats on the image PLEASE
kondaur [170]

Answer:

1.97201398 g

Explanation:

Multiply the theoretical yield by the percent yield. Don't forget to move the decimal over 2 on the percent before multiplying or to use the percent button on your calculator.

7 0
2 years ago
Which of the following would increase the volume of a gas?
iVinArrow [24]
According to Ideal Gas Equation, Volume is related to Pressure and Temperature as follow,

                                    P V  =  n R T
Or,
                                       V  =  n R T / P

This relation shows that Volume is directly related to Temperature and Inversely related to pressure. So,

<span>A. Chilling a can of soda: As temperature is decreased so the volume will also decrease.

</span><span>B. Heating a hot-air balloon: As temperature is increased, so Volume will also increase.

</span><span>C. Squeezing a balloon: As pressure is applied, so volume will decrease.

</span><span>D. Pressurizing an air tank: Again pressure is applied so volume will decrease.</span>
5 0
3 years ago
The mussel shells are eroding because the ocean is too acidic. More acidic oceans dissolve CaCO3 faster and change them into HCO
ahrayia [7]

This problem is providing information about possible causes whereby mussel shells are being eroded due to the acidity in the ocean. In such a way, it claims that more acidic oceans dissolve calcium carbonate in a faster way and produce hydrogen carbonate ions, and thus, a feasible explanation is required as well as a hypothesis according to the following choices:

a. Lower CO₂; this reduces the H₂CO₃ and increases the pH.

b. Add CO₃²⁻: this will add base and increase its concentration.

c. Add Ca²⁺: this will increase the precipitation rate of calcium carbonate (correct choice).

<h3>Equilibrium equations:</h3>

At first instance, we should recall the equilibrium equations that take place when acidic oceans dissolve calcium carbonate in a faster way:

CaCO_3(s)\rightleftharpoons Ca^{2+}(aq)+CO_3^{2-}(aq)\\\\CO_3^{2-}(aq)+H^+(aq)\rightleftharpoons HCO_3^-(aq)

CO_2(g)+H_2O(l)\rightleftharpoons H_2CO_3(aq)

<h3>Shifts from equilibrium:</h3>

Where we can see that the first choice is thoroughly discarded as the addition of CO₂ actually increases the ionizable carbonic acid (acidity). Moreover, the addition of CO₃²⁻ may also lead to the formation of more protons-releasing carbonic acid which also contributes to the acidity of the ocean.

<h3>Hypothesis:</h3>

Thereby, the correct condition that, for sure, contributes to the preservation of mussel shells will be the addition of Ca²⁺ and the hypothesis will be that it shifts the equilibrium towards the formation of more CaCO₃, the active compound in these shells.

Learn more:

  • Acidity in oceans: brainly.com/question/9751926
  • Solubility equilibrium: brainly.com/question/10760976
3 0
2 years ago
Other questions:
  • Which of the following molecules may diffuse freely through a phospholipid bilayer? (select two answers) asparagine, an amino ac
    9·1 answer
  • Which type of star has the lowest density?
    7·2 answers
  • What elegant has 2 valence electrons
    7·1 answer
  • Draw the structure of a compound of molecular formula C4H8O that has a signal in its 13C NMR spectrum at ≥ 160 ppm. Then draw th
    10·1 answer
  • Which of the following is a formal science?
    10·1 answer
  • what does the distance traveled by each component on the paper strip in paper chromatography depend on
    7·2 answers
  • Can anyone help me in my chemistry homework?​
    10·2 answers
  • Drug designers are usually
    7·1 answer
  • How many moles of KBr are present in 500 ml of a 0.8 M KBr solution?
    6·1 answer
  • Which pair of aqueous solutions can create a buffer solution if present in the appropriate concentrations?.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!