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
Ierofanga [76]
3 years ago
10

Help asap i don’t understand at all lol

Chemistry
2 answers:
kvv77 [185]3 years ago
6 0

Answer:

a, to reduce air bubbles

Explanation:

all its asking, is what is the purpose of the cover. and a is the most reasonable out of all of them, even though none of them make any sense.

OleMash [197]3 years ago
4 0
To reduce air bubbles
You might be interested in
Are pickles a type of a fruit
zheka24 [161]

Technically, pickles may be considered both a fruit and a vegetable. While they are made from cucumbers, which are a vegetable, the U.S. Supreme Court ruled them a ‘fruit of the vine’ because of their seeds.

3 0
3 years ago
What change of state takes place when a gas loses energy?
Nataliya [291]
<span>When a gas is cooled, it loses it's energy (the energy associated with thermal motion of molecules</span>
7 0
3 years ago
How do people who supply their own water generally obtain it? (Site 1)
ale4655 [162]
They usually get it from an old well they dug up and have a pump and strainer that go to their house.
6 0
3 years ago
For a given reaction, ΔS = +106 J/mol ⋅ K, and the reaction is spontaneous at temperatures above the crossover temperature, 446
solniwko [45]

Answer:  47.276 kJ/mol

Explanation:

According to Gibb's equation:

\Delta G=\Delta H-T\Delta S

\Delta G = Gibbs free energy  

\Delta H = enthalpy change

\Delta S = entropy change  = +106 J/mol

T = temperature in Kelvin  = 446 K

\Delta G= +ve, reaction is non spontaneous

\Delta G= -ve, reaction is spontaneous

\Delta G= 0, reaction is in equilibrium

\Delta H=T\Delta S

\Delta H=T\Delta S

\Delta H=446K\times +106J/Kmol=47276J/mol=47.276kJ/mol   (1kJ=1000J)

Thus the value of ΔH = 47.276 kJ/mol, assuming that ΔH and ΔS do not vary with temperature.

7 0
3 years ago
What observations would lead you to believe that the ink is actually a mixture?
worty [1.4K]
When using filter paper chromatography to separate ink, one will observe that more colours are mixed into darker inks. The darker an ink is, the more the colours that will be separated out during chromatography process. Thus,  the observation that the darker the ink, the more colours are mixed into it will lead one to believe that ink is a mixture. 
3 0
3 years ago
Other questions:
  • Copy the lists of measurements shown below. Pay close attention to the units that follow each number. List 1: 150 mL 11 mL 200 m
    12·2 answers
  • How to calculate the number of moles of an element from percentage composition
    12·1 answer
  • What is true about ionic compounds?
    14·1 answer
  • plz, help me Lisa’s doctor tells her that she needs to eat more foods that contain calcium to maintain her bone health. What cou
    9·1 answer
  • Which element would mostly have chemical properties similar to that of magnesium (Mg)?
    14·1 answer
  • Laboratory equipment is cleaned and properly stored after use primarily so that
    15·1 answer
  • Cual de los elementos no metaleses el menos reactivo? ​
    8·1 answer
  • You are a school bus driver. What distance in miles can you drive if your bus gets 6.55 miles per gallon and you have 85.0 gallo
    13·1 answer
  • 123456789101112117348w8284
    8·1 answer
  • what are some of the main things a girl will do if she likes you (YES THIS IS CHEMISTRY) so I'm not breaking the rules
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!