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
kolbaska11 [484]
3 years ago
14

How many elements does a compound need to form?

Chemistry
2 answers:
Llana [10]3 years ago
8 0

Answer:

A compound is a substance that contains two or more elements chemically combined in a fixed proportion.

Vinvika [58]3 years ago
4 0

Answer:

two

Explanation:

When two distinct elements are chemically combined, chemical bonds form between their atoms. the result is called a chemical compound

You might be interested in
What is a single celled orginium able to do
vichka [17]
<span>Many life forms consist of a single cell. As well as simple bacteria, there are more complex organisms, known as protoctists. Unlike bacteria, they have complex internal structures, such as nuclei containing organized strands of genetic material called chromosomes. Most are single-celled, but some form colonies, with each cell usually remaining self-sufficient.</span>
4 0
3 years ago
Calculate the heat change involved when 2.00 L of water is heated from 20.0/C to 99.7/C in
IgorC [24]

Answer:

669.48 kJ

Explanation:

According to the question, we are required to determine the heat change involved.

We know that, heat change is given by the formula;

Heat change = Mass × change in temperature × Specific heat

In this case;

Change in temperature = Final temp - initial temp

                                       = 99.7°C - 20°C

                                       = 79.7° C

Mass of water is 2000 g ( 2000 mL × 1 g/mL)

Specific heat of water is 4.2 J/g°C

Therefore;

Heat change = 2000 g × 79.7 °C × 4.2 J/g°C

                      = 669,480 joules

But, 1 kJ = 1000 J

Therefore, heat change is 669.48 kJ

7 0
3 years ago
Potassium hydroxide is classified as an arrhenius base because koh contains
mixas84 [53]

Answer: hydroxide ions

Explanation:

According to the Arrhenius concept, an acid is a substance that ionizes in the water to give hydronium ion or hydrogen ion  and a bases is a substance that ionizes in the water to give hydroxide ion .

According to the Bronsted Lowry conjugate acid-base theory, an acid is defined as a substance which donates protons and a base is defined as a substance which accepts protons.

According to the Lewis concept, an acid is defined as a substance that accepts electron pairs and base is defined as a substance which donates electron pairs.

As KOH can give hydroxide ions on dissociation , it is considered as arrhenius base.

KOH\rightarrow K^++OH^-

8 0
3 years ago
Explain how to draw the electron-dot diagram for oxygen.
AlexFokin [52]

The electron dot diagram for the oxygen atom shows six electrons around the symbol of the atom.

<h3>What is the electron dot diagram?</h3>

The electron dot diagram is the diagram of atoms of elements showing only the valence electrons present in the atom represented with dots.

The electron dot diagram for the oxygen atom is drawn as follows:

  • The number of valence electrons in oxygen atom is determined; valence electrons = 6
  • The symbol for the oxygen atom is written
  • The valence electrons are shown as dots around the symbol of the element.

In conclusion, the electron dot diagram uses dots around the symbol of an atom to show the valence electrons in the atom.

Learn more about electron dot diagram at: brainly.com/question/5835591

#SPJ1

7 0
1 year ago
The basic principle in balancing a chemical equation is to ______. hints
Natalija [7]
Answer:  obey the "law of conservation of mass".
_____________________________________
5 0
3 years ago
Read 2 more answers
Other questions:
  • Which is an element? A) alcohol B) sodium C) sugar D) water
    12·2 answers
  • Balance the following reaction. A coefficient of "1" is understood. Choose option "blank" for the correct answer if the coeffici
    8·2 answers
  • Give the chemical formula and systematic name for aurous sulfide, which is named using the older nomenclature. spelling counts!
    12·1 answer
  • In the Arrhenius equation, temperature is directly proportional to which factor
    5·1 answer
  • Help. The answer to question 1 I didn't mean to click so please answer that as well.
    15·1 answer
  • Sterling silver contains 92.5% silver and 7.5% copper. A sterling silver dish weighs 185.0 g. What mass of copper is in the dish
    10·2 answers
  • A syringe contains 610 mL of CO at 310 K and 1.5 atm pressure. A second syringe contains 520 mL of N2 at 325 K and 3.5 atm. What
    7·1 answer
  • What characterizes an organism?
    15·2 answers
  • The solubility for KCl is 60 g at 40 C. If a solution of KCl contains 79.5 g, is the solution saturated, unsaturated, or supersa
    7·1 answer
  • What is the ph of H2?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!