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
Reil [10]
3 years ago
6

Does the energy go from the surrounding to the chemicals or from the chemicals to the surround in an exothermic reaction?

Chemistry
1 answer:
Karo-lina-s [1.5K]3 years ago
4 0
In general terms, exothermic reactions release energy, so the energy goes from the system to the surroundings.
You might be interested in
3. A PS6 plugged into a 120 V outlet uses 3 Amps. What is the Resistance rating of
blondinia [14]

Answer:

R = 40 ohms

Explanation:

Given that,

The voltage of outlet, V = 120 V

Current flowing through the device, I = 3 A

We need to find the Resistance rating of  the power cord. Let the resistance is R. We know that,

Ohm's law, V = IR

Put all the values,

R=\dfrac{V}{I}\\\\R=\dfrac{120}{3}\\\\R=40\ \Omega

So, the resistance rating of the power cord is equal to 40 ohms.

8 0
3 years ago
Which compounds are lewis bases? select all that apply. h―c≡c―h h− nh3 ch3ch2ch3?
Alisiya [41]

The Lewis bases are those which can donate electron pair to an acceptor. These electrons can be a pair of electron that is a lone pair, a negative charge or electrons in a \pi-bond.

  • In H-C\equiv C-H, the presence of \pi-bond make it a Lewis base.
  • In H^{-}, the presence of negative charge makes it a Lewis base.
  • In NH_3, the presence of lone pair on nitrogen makes it a Lewis base.
  • In CH_3CH_2CH_3, there is no lone pair, no \pi-bond, no negative charge so it is not a Lewis base.

Hence, H-C\equiv C-H, H^{-}, and NH_3 are Lewis bases.

8 0
3 years ago
Which of the following has to remain constant to allow you to use the combined gas law for calculations?
Mazyrski [523]

Answer:

Amount of gas

Explanation:

The combined gas law has to do with pressure, volume, and temperature. All of them can be a variable that you have to solve for. However, amount of gas is not a variable you can solve for, which means it must remain constant.

4 0
3 years ago
The Battle of Gettysburg proved to be the turning point of the war. true or false
xxTIMURxx [149]
The Battle of Gettysburg proved to be the turning point of the war.

TRUE
6 0
3 years ago
How do you prepare diluted acid from concentrated acid?
lidiya [134]
A dilute acid solution is prepared by adding the concentrated acid to water. If you do the reverse, i.e. add water to the acid it is possible that a small amount water could react with acid and boil and explode thus splashing the acid onto you or someone else near the activity. 
4 0
3 years ago
Other questions:
  • How many times heavier than c -12 is the average atom of this element?
    6·1 answer
  • 2 H2 (g) —> 2 H2O (g)
    9·1 answer
  • What do lines in an elements line spectrum represent?
    5·1 answer
  • Why do scientists prefer to describe matter by its mass rather than its weight?
    7·2 answers
  • 7) Explain how tsunamis are formed. How do tsunamis change the surface of the Earth?
    6·1 answer
  • According to the experiments of Ernest Rutherford, where can a majority of a given atom's mass be found?
    11·1 answer
  • 50 POINTSS !!!! HELP
    8·1 answer
  • Please help with this
    9·1 answer
  • What does dehydration cause?
    7·2 answers
  • At room temperature, compounds that are held together by covalent bonds tend to exist in what state?
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!