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
lisov135 [29]
3 years ago
14

There are naturally occuring elements.

Chemistry
2 answers:
Salsk061 [2.6K]3 years ago
8 0

THERE ARE 92 NATURALLY OCCURING ELEMENTS :D

mr_godi [17]3 years ago
6 0
There are 94 naturally occurring elements
You might be interested in
In the oxidation reduction reaction 2FeCl2 + Cl2 = 2FeCl3 what substance is reduced? What substance is oxidized?
marishachu [46]

Answer:

Iron is oxidized while chlorine is reduced.

Explanation:

The oxidation reduction reactions are called redox reaction. These reactions are take place by gaining or losing the electrons and oxidation state of elements are changed.

Oxidation:

Oxidation involve the removal of electrons and oxidation state of atom of an element is increased.

Reduction:

Reduction involve the gain of electron and oxidation number is decreased.

Consider the following reaction:

2FeCl₂  + Cl₂  →  2FeCl₃

in this reaction the oxidation state of iron is increased from +2 to +3. That's why iron get oxidized and it is reducing agent because it reduced the chlorine. The chlorine is reduced from -2 to -3 and it is oxidizing agent because it oxidized the iron.

2Fe⁺²Cl₂⁻²

2Fe⁺³Cl₃⁻³

The iron atom gives it three electrons to three atoms of chlorine and gain positive charge while chlorine atom accept the electron and form anion.

4 0
3 years ago
What is the mass in grams of 2.00 10 5 atoms of naturally occurring neon
lesantik [10]

Answer:

2.00X10^5 x 20gNe/6.02x10^23=6.46x10^-18 but books answer is 797.

Explanation:

3 0
2 years ago
How many moles in 110g of nahco3?
kenny6666 [7]
Hope this helps you.

5 0
3 years ago
For a particular chemical reaction, the enthalpy of the reactants is -400 kJ. The enthalpy of the products is -390 kJ. The entro
Hunter-Best [27]

Answer:

For a particular chemical reaction, the enthalpy of the reactants is -400 kJ. The enthalpy of the products is -390 kJ. The entropy of the reactants is 0.2 kJ/K. The entropy of the products is 0.3 kJ/K. The temperature of the reaction is 25oC. What can you conclude about this reaction?

It is exergonic

It is endergonic

it is a redox reaction

It is being catalyzed by an enzyme

6 0
2 years ago
An object was measured by a worker as
Gre4nikov [31]

Answer:

\boxed{2.8 \, \%}

Explanation:

\text{Percent error} = \dfrac{\lvert \text{Measured - Actual}\lvert}{ \text{Actual}} \times100 \, \%

Data:

Predicted = 17.4 cm

     Actual = 17.9 cm

Calculation:

\text{Percent error} = \dfrac{\lvert 17.4 - 17.9\lvert}{17.9} \times 100 \, \% \\\\= \dfrac{\lvert-0.5\lvert}{17.9} \times 100 \, \% = \dfrac{0.5}{17.9} \times 100 \, \% \\\\= 0.028 \times 100 \, \% = \textbf{2.8 \%}\\\\\text{The percent error in the measurement is } \boxed{\textbf{2.8 \%}}

6 0
3 years ago
Other questions:
  • A reaction contains two reactants, A and B. If A is doubled, there will be a greater number of effective collisions between reac
    8·1 answer
  • When an ice cube melts what happens to the matter that once made up the cube
    12·1 answer
  • A student dissolves of urea in of a solvent with a density of . The student notices that the volume of the solvent does not chan
    12·1 answer
  • HS- is amphoteric; it can behave as either an acid or a base.
    13·1 answer
  • What me with this work sheet plllzz
    6·1 answer
  • 1.What zodiac sign is October 19,2006?<br> A). Sagittarius<br> B). Libra<br> C). Leo<br> D). Pisces
    7·2 answers
  • Quartz,SiO2,contains 46.7% silicon. What mass of silicon is present in 381 g of quartz?
    8·1 answer
  • Soda water is water that has bubbles of carbon dioxide in it,
    13·2 answers
  • A blu-ray laser has a wavelength of 405nm. In what region of the electromagnetic spectrum is this radiation? What is its frequen
    9·1 answer
  • A ball has a mass of 2.0 kg and travels a distance of 24 meters in 10 seconds what is the Velocity
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!