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
vesna_86 [32]
2 years ago
5

Which of these is a sentence fragment?

Chemistry
1 answer:
aleksley [76]2 years ago
4 0

Answer:

the dog barked is the answer

You might be interested in
What is the mass of an original 5.60-gram sample of iron-53 that remains unchanged after 25.53 minutes?
olga_2 [115]
Answer is 0.7 g

Reason: Given: mass of Fe = 5.60 gWe know that, half life of Fe-53 = t1/2 (Fe-53) = 8.51 min.
Thus, after 25.53 mins, number of half life passed = 25.53/8.51= 3

Now, Amount left after first half life = 5.60g/2 = 2.80 g
Amount left after second half life = 2.80g/2 = 1.40 g
Amount left after third half-life = 1.40g/2 = 0.7g.
4 0
3 years ago
In the Energy and Specific Heat lab, what temperature should be recorded as the final temperature of the water when measuring th
Anon25 [30]

Answer:

B. The temperature of the water when the food sample has finished burning completely.

Explanation:

Heat or thermal energy is a form of energy that transfers from one object to another due to a temperature difference between the objects. The units for heat are joules or calories.

Calorimetry is the measurement of heat energy released or absorbed in a chemical  reaction. A calorimeter is used in calorimetry. The calorimeter operates on the Law of Conservation of Energy which states that energy is never created or destroyed but is transformed from one form to another or between objects.

In food calorimetry, the energy released when food is burned is measured by recording the rise in temperature of water in a calorimeter when a given mass of a food sample is burned completely.

Energy can be calculated using the formula: Q = mc ∆T

where Q = the energy in joules or calories, m = the mass in grams, c = specific heat and ∆T = the change in temperature (final temperature - initial temperature).

The temperature of the water when the food sample has finished burning completely is taken as the final temperature of the water. The sample is allowed to smolder for sometime before recording the final  water temperature. This is because the water temperature will continue to rise after the  flame has gone out.

6 0
3 years ago
Hi, pls can someone answer<br> I'll give brainliest
Temka [501]

D is the answer so now we can understand

6 0
2 years ago
Read 2 more answers
Given the reaction: HNO2 (aq) &lt;-&gt; H+ (aq) + NO2- (aq); write the ionization constant for the reaction.
Nuetrik [128]

Answer:

see explanation

Explanation:

HNO₂ ⇄ H⁺ + NO₂⁻

Ka = [H⁺][NO₂⁻]/[HNO₂]

4 0
3 years ago
The majority of the elements in the Periodic Table are
Lena [83]
Most elements are metals. A.
3 0
3 years ago
Read 2 more answers
Other questions:
  • Using the Henderson-Hasselbalch equation, calculate the amount of HEPES (sodium salt) and HEPES (free acid) required to prepare
    6·1 answer
  • 10. What is the energy of x-radiation with a 1 x 10-m wavelength?<br> Esho
    8·1 answer
  • Need to fill in blank with choice above
    6·1 answer
  • Using the accepted value for the specific heat of tungsten (See the References tool), calculate the final temperature of the wat
    5·1 answer
  • you make ammonia in a factory and a large order just arrived. to increase your rate of production, or rate of the reaction to pr
    14·1 answer
  • Calculate the number of different atoms in 0.2 mol ethene​
    8·1 answer
  • What is the energy of an electron in a Li+ ion when an electron moves from n = 2 to n =3?
    12·1 answer
  • How many millimeters are in 4.69 miles? Show work!
    15·2 answers
  • The "clusters" of Democritus are like what kind of material<br> that we know of today?
    15·1 answer
  • 73 m is equal to how many dm?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!