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Strike441 [17]
3 years ago
6

What method would be the best choice for a climatologist to find out what the ocean temperatures were like during the Pleistocen

e ice ages 30 million years ago?
1.Analyze ice core samples from pleistocene glaciers.
2.Analyze alkenones molecules of phytoplankton in rocks of that period.
3.Analyze the tree rings of petrified wood from the Pleistocene.
4.Analyze O-18 ratios from Antarctic glaciers.
Chemistry
1 answer:
Norma-Jean [14]3 years ago
7 0

Answer:

It is 2

Have a great day

:D

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What do you think would happen if a positive ion and a negative ion were close together? (What do opposite charges do?)
viktelen [127]

Answer: opposite charges attract

Explanation:

7 0
3 years ago
a metal weighing 50.0g absorbs 20.0j of heat when its temperature increases by 150.0°c . what is the specific heat of the metal
nadezda [96]

Answer:

2.677 J/g°C

Explanation:

Quantity of heat required to raise the temperature of the metal,

Q = mc∆T

where m is the mass of the metal, c is the metal's specific heat capacity, and ∆T is the change in temperature that accompanies the heat transfer process

20.0J = 50.0g × c × 150°C

c = 20.0J/(50.0g × 150°C)

c = 2.677 J/g°C

7 0
3 years ago
Explain the differences among nonpolar covalent bonds, polar covalent bonds, and ionic bonds.
docker41 [41]
Nonpolar covalent bonds are a type of chemical bond where 2 atoms share electrons with each other.
Polar covalent bonds are the same as nonpolar covalent bonds, but a pair of electrons are unequally shared between 2 atoms. 
Ionic bonds are a type of linkage formed from the electrostatic attraction between oppositely charged ions in a chemical compound.

Hope this helps! ^-^
3 0
3 years ago
CO2 and H2O are both compounds. How do you know
Eva8 [605]

Answer:

neutral groups of atoms formed by covalent bonds.

3 0
3 years ago
Write the cell notation for an electrochemical cell consisting of an anode where Mn (s) is oxidized to Mn2 (aq) and a cathode wh
morpeh [17]

Answer:

Mn(s)/Mn^2+(aq)//Co^2+(aq)/Co(s)

Explanation:

In writing the cell notation for an electrochemical cell, the anode is written on the left hand side while the cathode is written on the right hand side. The two half cells are separated by two thick lines which represents the salt bridge.

For the cell discussed in the question; the Mn(s)/Mn^2+(aq) is the anode while the Co^2+(aq)/Co(s) half cell is the cathode.

Hence I can write; Mn(s)/Mn^2+(aq)//Co^2+(aq)/Co(s)

8 0
3 years ago
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