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
FrozenT [24]
3 years ago
14

Approximately _____ elements occur naturally on earth.

Chemistry
1 answer:
Anna11 [10]3 years ago
4 0
90 elements occur naturally on earth
You might be interested in
Fill in the blank: After a chemical reaction, the atoms of the reactant _____ to form new products.
Wewaii [24]
The atoms of the reactant rearrange to form new products.
8 0
3 years ago
How much heat is added if 0.0318g of water is increased in temperature by 0.364 degrees C?
SSSSS [86.1K]

Answer:

0.04838J

Explanation:

Heat is a form of energy that is transferred from one body to another as the result of a difference in temperature between the bodies , here heat is added to the water as a result of temperature change of 0.364 degreesC

Given:change in temperature=0.364

Mass of water=0.0318g

But we need specific heat capacity of water which is

4.2 J/g°C

Then we can calculate How much heat is added by using below formula

Energy = Mass * specific heat capacity *(change in temperature)

energy =0.0318g* 4.18g*0.364

=0.04838J

8 0
3 years ago
All the following are signs of a chemical reaction, except
hodyreva [135]
C. a change of state. It can be a physical or a chemical state of change.
8 0
3 years ago
Read 2 more answers
Without the sun, life on earth would not exist. There would be no warmth, no plants, no animals, no night and day.
zvonat [6]

Answer: Option (A) is the correct answer.

Explanation:

The process in which two or more small nuclei combine together to result in the formation of a larger nuclei is known as fusion.

In Sun, four hydrogen nuclei combine together to result in the formation of helium atom. This combining of small hydrogen nuclei to form a large helium nuclei represents fusion process occurring inside the Sun.

Thus, we can conclude that to power itself, the sun is constantly generating a nuclear reaction in its core, in which hydrogen nuclei are combined to form helium. This process is known as fusion.

7 0
3 years ago
Read 2 more answers
Is flat soda mixture or pure substance?
Nesterboy [21]
The answer should be Pure substance
5 0
3 years ago
Other questions:
  • The U.S. requires automobile fuels to contain a renewable component. The fermentation of glucose from corn produces ethanol, whi
    5·1 answer
  • Why do lone pairs of electrons repel other electrons pairs farther away than bonding pairs of electrons do?
    11·1 answer
  • Scientists define work as the spending of energy.<br><br> True<br> False
    7·1 answer
  • What are the limitations of Bronsted-Lowery concept???
    5·2 answers
  • State three reasons why air is <br>•Chassifield as a mixture<br>One is through sublimation<br>​
    15·1 answer
  • What cannot be changed by turning 100 grams of ice into water?
    11·1 answer
  • Sound waves? like what they do.
    7·1 answer
  • Please help me with these questions
    10·1 answer
  • the combustion of 17.41 grams of a compound known to only contain carbon, hydrogen, and oxygen produced 25.61 grams of carbon di
    14·1 answer
  • Which substance cannot be decomposed by a chemical change?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!