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
ella [17]
3 years ago
13

Scientists think the earth is approximately _____ years old.

Chemistry
2 answers:
gizmo_the_mogwai [7]3 years ago
5 0
Scientist thinks the earth is approximately 4 1/2 years old.

diamong [38]3 years ago
4 0

Answer is 4 ½ billion.

Scientists think the earth's age is 4 ½ billion. This calculation is based on the radioactive dating. Since the formation of the earth, the time period has been divided into 3 major geological time periods as eon. They are phanerozoic, proterozoic and archean.

You might be interested in
8 Fe + Sg → 8 Fes<br><br> How many grams of FeS is produced from 0.3 mol Sg?
frozen [14]

Answer:

Explanation:

Molar ratio for Sg : FeS = 1:8

If there are 0.3 moles for Sg

Therefore, 0.3 × 8 =2.4 moles of FeS

Mass = Moles/ Mr

Mr of FeS = 56+32=88

So mass = 2.4/88

Mass= 0.027g

6 0
2 years ago
What is the density of lead (in g/cm^3 3 ) if a rectangular bar measuring 0.500 cm in height, 1.55 cm in width, and 25.00 cm in
Viktor [21]

Answer:

Density = 11.4 g/cm³

Explanation:

Given data:

Density of lead = ?

Height of lead bar = 0.500 cm

Width of lead bar = 1.55 cm

Length of lead bar = 25.00 cm

Mass of lead bar = 220.9 g

Solution:

Density = mass/ volume

Volume of bar = length × width × height

Volume of bar = 25.00 cm × 1.55 cm × 0.500 cm

Volume of bar = 19.4 cm³

Density of bar:

Density = 220.9 g/ 19.4 cm³

Density = 11.4 g/cm³

3 0
3 years ago
Heliocentric theory:
Juliette [100K]
All of th above support the heliocentric theory.
7 0
3 years ago
Another name for a "oxidation-reduction" reaction is
anzhelika [568]
Redox (red for reduction and ox for oxidation)
8 0
3 years ago
The purpose of copper chloride and water. Please answer !!!!!!!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!!!!!!!!
egoroff_w [7]
Copper choruses purpose is its used as a catalyst for organic and inorganic reactions , mordant for dyeing and printing textiles, pigment for glass and ceramics, wood preservative, disinfectant, insecticide, fungicide, and herbicide. (Not sure if you want the actual purpose of water or not)
7 0
3 years ago
Other questions:
  • Which best describes a compound such as sodium chloride
    5·2 answers
  • Keeping the number of moles constant, what is the final pressure in atm if the temperature was cooled from -91.5°C to -239°C, th
    8·1 answer
  • Predict the sign of the entropy change of the system for each of the following reactions.
    15·1 answer
  • What happens if someone let's go of the button on an electric door bell
    6·1 answer
  • How many liters of a 6.0M solution Fe(SCN)2 are needed to prepare 2.0L of a 0.75M solution?
    9·2 answers
  • When a neutral atom loses an electron, it forms an ion with a positive charge called a _________? Question 1 options:
    6·2 answers
  • What is the [H+] if the pH of a<br> solution is 1.65?
    11·1 answer
  • How are sodium (Na) and potassium (K) similar?
    6·2 answers
  • Calculate the value of Key in the following reaction if the equilibrium concentrations are
    10·1 answer
  • What is the relationship between plants soil and nutrients?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!