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
Pani-rosa [81]
3 years ago
7

Select which of the following are used to determine the age of the Earth. Select 3.

Chemistry
1 answer:
saveliy_v [14]3 years ago
7 0

Meteorites discovered on earth

You might be interested in
Are these synthesis decomposition single replacement or double replacement?
marishachu [46]

Answer:

1. Synthesis

2. Decomposition

3. Single replacement

4. Synthesis

5. Decomposition

6. Synthesis

Explanation:

Kind of a hard picture to look at but let me define each chemical reaction:

Synthesis:

a + b ---> ab   In synthesis elements/compounds come together to form new                compounds

Decomposition:

ab ---> a + b   In decomposition a compound breaks down to form 2 elements/compounds

Single replacement:

a + bc ---> b + ac   In a single replacement one element/compound takes the place of another element/compound.

Double replacement

ab + cd ---> ad + bc In a double replacement 2 compounds exchange different elements/compounds.

Now, let's go through the assignment

1. P + O2 --> P4O10  This is a synthesis reaction because the two elements (P and O) came together to form one compound.

2. HgO ---> Hg + O2  This is a decomposition reaction because HgO broke into separate elements Hg and O.

3. Cl2 + NaBr ---> NaCl + Br2  This is a single replacement reaction because chlorine (Cl) replaced the spot of bromine (Br) to bond with sodium (Na).

4.  Mg + O2 ---> MgO  This is a synthesis reaction because two elements (Mg and O) came together to form one compound.

5. Al2O3 ---> Al + O2  This is a decomposition reactions because Al2O3 broke into separate elements Al and O.

6. H2 + N2 ---> NH3  This is a synthesis reaction because two elements (H and N) came together to form one compound.

<em>I hope this helps!!</em>

<em>- Kay :)</em>

7 0
3 years ago
How is the nucleus of an atom split?
AnnZ [28]
Collision with a high-speed particle
8 0
3 years ago
A neutral pH level is _____.<br> 5<br> 7<br> 8
love history [14]
Neutral pH is level 7
5 0
3 years ago
I need help on my chemistry quiz
slamgirl [31]

Answer:

it could be 25degrees c... not sure

4 0
3 years ago
How does the skin help regulate body temperature?<br><br><br> HELP FAST
Gnom [1K]

Answer:

1. The body's immense blood supply (when blood vessels dilate or become larger heat loss occurs) When the blood vessels constrict it holds in heat

2. The skins blood supply also helps maintain body temperature (helps maintain homeostasis which is the "normal" state of our body)

3. Humidity in the air effects thermoregulation (heat regulation in the body) by limiting sweat evaporation (usually sweat evaporates into the environment when the humidity is low because the air has low "water levels" per say while you have high "water levels" because of your sweat

7 0
3 years ago
Other questions:
  • CaSO3 (s) → → → → CaO (s) + SO2 (g) What mass of CaSO3 must have been present initially to produce 14.5 L of SO2 gas at a temper
    12·1 answer
  • Does the biosphere have clear boundaries
    7·1 answer
  • Complete the statement to describe the calcium concentration that must be maintained in human body cells. ( fill in the blank )T
    8·2 answers
  • By what factor will the kinetic energy change if the speed of the baseball is decreased to 54.8 mi/h? Express your answer as an
    13·1 answer
  • If you have 670.0 g of water and wish to make a 2.13 m solution of KBr, how many grams of the solute would you have to add to th
    15·1 answer
  • In the reaction H2SO4 + 2 NaOH -&gt; Na2SO4 + 2H2O, an equivalence point occurs when 23.1 mL of 0.2055 M NaOH is added to a 25.0
    10·1 answer
  • What are substances called whose solutions conduct electricity?
    7·1 answer
  • Describe two observations you might make when a chemical change occurs
    14·1 answer
  • Complete the equation C14H30 = ________ + C7H14
    9·1 answer
  • What is the molar mass of just the O in CO2?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!