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
Natalija [7]
3 years ago
6

The continents are made up of mostly what type of rock

Chemistry
2 answers:
goblinko [34]3 years ago
4 0
The continents are made up of basalt
raketka [301]3 years ago
3 0
Granite and basalt is the answer
hope it helps
You might be interested in
The half life for the decay of carbon-14 is 5.73 x 10 years. Suppose the activity due to the radioactive decay of the carbon-14
Elena-2011 [213]

Answer:

Age of the atifact is 4.2\times 10^{2} years

Explanation:

  • For first -order radioactive decay- A_{t}=A_{0}(\frac{1}{2})^{\frac{t}{t_{\frac{1}{2}}}}
  • A_{t} represents activity of radioactive nuclide after t time, A_{0} represents initial activity of radioactive nuclide and t_{\frac{1}{2}} represents half-life
  • Here, A_{t}=19Bq, A_{0}=20Bq and t_{\frac{1}{2}}=5.73\times 10^{3}years

Plug-in all the given values in the above equation-

19=20\times (\frac{1}{2})^{\frac{t}{5.73\times 10^{3}}}

or, t=4.2\times 10^{2}

So, age of the atifact is 4.2\times 10^{2} years

6 0
3 years ago
Plz help! :) :D I will mark you as BRAINLIEST!!!
nadezda [96]

Answer:

Some of the physical and chemical properties of magnesium are:

-The term ‘magnesium’ is derived from the Greek word magnesia, which refers to the name of the place from where it was extracted.

-Magnesium is closely related to manganese and magnetite.

-About 2.1% of the Earth’s crust contains magnesium. This makes magnesium the 6th most found element.

-The biggest deposits of magnesium is found in the seawater. It has been calculated by scientists that a cubic mile of seawater contains about 6 million tons of this element

2nd answer:

Physical Properties of Magnesium: ”I’m a highly stable element, so you can count on me”

Chemical Properties of Magnesium: ”I love to travel but I do corrode aluminum so we won’t be flying off on adventures in airplanes planes anytime soon

Explanation:

Hope this helps you out! UwU

8 0
3 years ago
HELPP!!
ikadub [295]

Answer: C. CO₂ and H₂O

Explanation:

Combustion reactions produce carbon dioxide and water.

3 0
2 years ago
Boiling refers to which phase change?
Monica [59]
Boiling or also called evaporation is the conversion of liquid to gas through the application of heat. This phase change is an endothermic change and is the opposite of condensation from gas to liquid.
8 0
3 years ago
Which chemical equation below is balanced correctly?
Sveta_85 [38]
Al4C3 + 12H2O-----> 3CH4 + 4Al(OH)3
8 0
3 years ago
Read 2 more answers
Other questions:
  • Ludwig Boltzmann developed a model that relates entropy to _________.
    15·1 answer
  • What is the [OH-] concentration of a solution with a pH of 5.5?
    10·2 answers
  • What type of compound is fe3n2?
    11·1 answer
  • A student fills her burette with NaOH to the 2.5 mL mark. She titrated her sample of the NaOH until she reaches the endpoint (i.
    6·1 answer
  • ​I have a few questions from my homework and I was wondering if I can get some help ​
    12·1 answer
  • Hlo guys how are you all ​
    9·2 answers
  • Use the word bank to complete the charts about the metrics system measurement
    10·1 answer
  • When classified, all living things have
    13·1 answer
  • The van der waals equation is a modified version of the
    13·1 answer
  • Cassidee walks 1-mile north and then turns and walks 2 miles west. Distance Displacement
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!