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
Alika [10]
3 years ago
9

Which of these describes an exothermic reaction?

Chemistry
2 answers:
solong [7]3 years ago
8 0

In Endothermic reactions, energy is absorbed.

GenaCL600 [577]3 years ago
6 0

Answer:

The answer is "Energy is released by the reaction"

Explanation:

I took the test Trust me

If you get it wrong please mark wrong...

You might be interested in
Pb(NO3)2 + NH4Cl = PbCl2 + NH4NO3<br> how do i balance this??
Elden [556K]

Answer:

We have NH 4 and that's called the ammonium ion it also stays together.

Explanation:

7 0
3 years ago
The iupac name this compound​
MrRa [10]

Answer:

It's <em>HYDROXIDE</em><em> </em>

Explanation:

You do not call it as hydroxide <em>ion</em><em> </em>because ion always have + or -

I hope this helps

HAVE A GOOD DAY!

5 0
3 years ago
Read 2 more answers
Help for this practice work
allochka39001 [22]

Answer:

It's the third option.

Explanation:

In order for the chemical equation to be correctly it needs the same number of atoms of each element on both sides of the equal sign

8 0
2 years ago
Please help urgent Balance the following word equation:
LekaFEV [45]

Answer:

AlCl3 + 3Na > Al + 3NaCl

Explanation:

AlCl3+Na → Al + NaCl

Al =1 Al=1

Cl =3 Cl = 1

Na=1. Na = 1

so balance

and it would be

Alcl3 + 3Na → Al + 3NaCl

8 0
3 years ago
A chemical formula shows the kinds and numbers of _____ in the smallest representative unit of a substance.
Firdavs [7]

A chemical formula shows the kinds and numbers of <u>atoms</u> in the smallest representative unit of a substance.

<u>Explanation:</u>

In chemistry, a  formula unit is the empirical formula of "ionic or covalent network solid compound" that is used as an independent entity for "stoichiometric calculations". This formula is a representation of a molecule that uses chemical symbols.

The unit is the lowest whole number ratio of ions represented in an ionic compound. It gives the numbers of atoms representing the "smallest representative" unit of a substance. The number of atoms also tells us about the chemical and physical properties of the compound formed.

4 0
3 years ago
Other questions:
  • Are ionic compounds flexible or brittle​
    12·1 answer
  • The mineral magnesite contains magnesium carbonate, MgCO3 (molar mass= 84 g/mol), and other impurities. When a 1.26-g sample of
    9·2 answers
  • Sand at a beach becomes very warm after being exposed to sunlight for many hours due to what type of heat transfer?
    13·2 answers
  • How many moles of sodium are present in 17 g of Na?
    14·1 answer
  • What do the coefficients in the following balanced chemical equation mean?<br><br> 2H2 + O2 → 2H2O
    7·1 answer
  • PLEASE HELP DUE IN 52 MINUTES
    8·1 answer
  • A hypothesis is tested by ___.
    9·1 answer
  • All atoms of a given element must contain the same number of
    6·1 answer
  • Which of the following is TRUE about a physical change to a substance?
    5·1 answer
  • State at least three different properties of metallic compounds?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!