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
rusak2 [61]
3 years ago
14

NEED HELP QUICK!!! pls give quick reason why

Chemistry
1 answer:
weqwewe [10]3 years ago
4 0

Answer:

- 20 J

Explanation:

Heat of Reaction = Heat of Products - Heat of Reactants

From the graph;

Heat of Products = 10

Heat of Reactants = 30

Heat of Reaction = 10 - 30 = -20 J

You might be interested in
What type of force is produced when two objects are in contact, then move (or try to move) past each other?
Gnesinka [82]

Answer:

A. Frictional

Explanation:

Friction is the force created when two solid objects in contact try to move past each other.

3 0
4 years ago
What is the chemical formula for the compound magnesium perchlorate? Use the list of polyatomic ions and the periodic table to h
8_murik_8 [283]

The chemical formula for the compound magnesium perchlorate is Mg(ClO₄)₂

Magnesium perchlorate or Mg(ClO₄)₂ is an ionic compound.

Perchlorate here is an anion which is represented by ClO₄⁻. Perchlorate is a polyatiomic anion, where one Cl atom is bonded to four O atoms.

The magnesium cation is represented by Mg²⁺

So one Mg²⁺ cation combines with two ClO₄⁻ anion to form one molecule of Mg(ClO₄)₂


6 0
3 years ago
2. What are the names of the products when you mix an equal strength acid and alkali
dexar [7]
I think the answer is water and hydrochloric acid
8 0
3 years ago
Balance<br> _C2H6() +<br> O2(g) →
nignag [31]

Answer:

2C2H6 + 7O2 → 4 CO2 + 6H20

Explanation:

3 0
3 years ago
Which group of elements has the most similar chemical properties? (1 point)
enot [183]

Answer:

carbon nitrogen and oxygen

6 0
3 years ago
Other questions:
  • Which of these does not describe the wright brothers first attempts at flight
    7·2 answers
  • How much water must be removed by steam distillation to recover this natural product from 3.0 g of a spice that contains 10% of
    8·1 answer
  • A certain liquid as a mass of 15 grams and a volume of 15 mL. This liquid must be.....​
    13·1 answer
  • Two masses exerting a force on each other is an example of What????
    7·1 answer
  • What is the force of gravity acting on an object? (3 points)
    13·1 answer
  • What is the mass of 6.14x10^25 atoms of gold
    7·1 answer
  • What is the standard atomic notation for an atom that has an atomic number of 4 and has 5 neutrons
    8·1 answer
  • Is benzene a solute or solvent
    8·1 answer
  • Name the following : [Ni(NH3) 4(H2O)2(NO3)2​
    7·1 answer
  • Which is easy to observe the physical properties or chemical properties of a object
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!