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
umka21 [38]
3 years ago
10

How to tell if an equation is exothermic or endothermic?

Chemistry
1 answer:
levacccp [35]3 years ago
3 0
The standard enthalpy change of a reaction is positive thus endothermic.

The standard enthalpy change of a reaction is negative thus exothermic.

Hope it helped!
You might be interested in
Which of the following are required for plants to carry out photosynthesis?
Vika [28.1K]

Answer:

Carbon dioxide, water, and sunlight

Explanation:

3 0
2 years ago
Power plants use carbonic acid to remove sulfur oxide gases.
likoan [24]
Is this a question or a statement?
7 0
3 years ago
Read 2 more answers
How many moles of chlorine (Cl) atoms are in a sample of 1.72 × 1022 atoms? 0.0286 mol Cl 35.0 mol Cl 1.03 × 1023 mol Cl 1.04 ×
kogti [31]

Given information : Sample of 1.72\times 10^{22} atoms

We need to find the moles of Chlorine in the given sample.

We can say that we need to find moles from the given atoms.

Relation between mole and atom is given by : 1 mole = 6.022\times 10^{23} atoms

Where 6.022\times 10^{23} is Avogadro number.

1.72\times 10^{22} atoms\times \frac{1 mole}{6.022\times 10^{23} atoms}

1.72\times 10^{22}\times \frac{1 mole}{6.022\times 10^{23}}

On solving the above equation , atoms(unit) gets cancelled out and we get 0.0286 mol.

In the given sample the moles of Chlorine (Cl) is 0.0286 mol , so option A is correct.

6 0
3 years ago
(ii) Describe another method for making ethanol.​
Aloiza [94]

Answer:

There are essentially three methods used to produce ethanol:

Manufacture from ethene using steam (the "synthetic" route)

Production from sugars and starches by fermentation, using yeasts.

Production from biomass waste, using bacteria.

Please give brainlist if this helped

7 0
2 years ago
How does earth atmosphere affect the motion of a meteroid
zaharov [31]
When a meteroid goes into the atmosphere the friction starts slowing it down and generating heat.
5 0
3 years ago
Other questions:
  • Chlorine gas (cl2) forms when two chlorine atoms share an electron. what type of bonding is present in chlorine gas?
    7·2 answers
  • What symbol is used for a beta particle?
    5·2 answers
  • Boiling and evaporation aren't the same. Can you explain the difference????? ☺
    5·2 answers
  • Describe the range of radii of most atoms in nanometers (nm)
    14·1 answer
  • If a sample of KF has a mass of 100.0 grams, how many moles of KF are present in the sample?
    8·2 answers
  • Which of the following statements could be true regarding polar molecules? Choose one or more: A polar molecule will not contain
    7·1 answer
  • What is an aqueous solution compound
    8·1 answer
  • Whats the awnser? i cant find it and i need it asap! anyone i will crown you the brainleist!
    15·1 answer
  • Na2o3 is nitrogen trioxide why​
    12·1 answer
  • What is it I need help​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!