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tino4ka555 [31]
3 years ago
12

PLEASE I NEED HELP!!!!!!!!!!!!! I AM GIVING THE HIGHEST POINTS POSSIBLE! PLEASE, I AM FAILING, I JUST NEED HELP!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!
suppose you found a fossil of a clamshell. What can you conclude about the once-living organism and how it became a fossil?
Chemistry
2 answers:
NikAS [45]3 years ago
5 0

The organism was once a clam and most likely became a fossil after being buried by silt in its watery environment after death. Might need more clarification on what exact answer you need.

Vinvika [58]3 years ago
4 0

You already know what type of fossil it is. It is a sea animal which means you already know the general location of the animal which would of been the beach. It is possible to determine how it became a fossil since you can assume that it was either washed up on shore or buried by another animal. Clams generally live for about 400 years so in order for it to be a fossil it would have had to of been dead a long time ago which would be more than 400 years. It could of been around in the Silurian period or the Devonian period since that is when clams practically ruled the oceans. 252 million years ago is when clam like organisms were dominant so you have the general time it could of been around.

You might be interested in
8.3 miles of sodium chloride in 0.65 of water.
Allisa [31]

Answer:

12.77 M

Explanation:

8.3 moles of NaCl in .65 L of water ?    Looking for M ?

8.3 M / .65 L  =  12.77 M

4 0
2 years ago
The two boron atoms listed in the table are isotopes of the boron. The two carbon atoms and the two oxygen atoms are also called
Ivan

Answer:

A type of an atom which has a different number of neutrons but the same atomic number, therefore making it the same element. This atom would still have the same properties as well. (Ex: Vanadium-51 is an isotope of Vanadium that has 51 neutrons but still has 23 protons, as its atomic number is 23.)

3 0
2 years ago
For the following reaction, the equilibrium constant Kc is 2.0 at a certain temperature. The reaction is endothermic. What do yo
jeyben [28]

Answer:

The correct answer is : 'the concatenation of NO will increase'.

Explanation:

Any change in the equilibrium is studied on the basis of Le-Chatelier's principle.

This principle states that if there is any change in the variables of the reaction, the equilibrium will shift in the direction to minimize the effect.

If the temperature is increased, so according to the Le-Chatlier's principle , the equilibrium will shift in the direction where increase in temperature occurs.

2NOBr(g)\rightleftharpoons 2NO(g) + Br_2(g)

As, this is an endothermic reaction, increasing temperature will add more heat to the system which move equilibrium in the forward reaction with decrease in temperature. Hence, the equilibrium will shift in the right direction.

So, the concatenation of NO will increase.

7 0
3 years ago
Which of the following is NOT an example of a physical property?
olya-2409 [2.1K]

Answer:

The answer to your question is: B

Explanation:

Physical properties are properties that occurs in matter but there is not change in the composition.

A. Solid ice can be very brittle.   This is a physical property.

B. Water can form hydrogen and oxygen gas under electrolysis conditions.  Here there is a change in the composition of matter, this is an example of chemical property

C. Water can freeze solid at 32 degrees Fahrenheit. This is a physical property.

D. Liquid water can turn into steam in a heated tea kettle.  This is a physical property

E. none of the above This option is wrong because option B is correct.

8 0
3 years ago
Calculate the amount of heat in kilojoules required to vaporize 2.58 kg of water at its boiling point.
givi [52]

Answer:

The amount of heat required to vaporize 2.58 kg of water at its boiling point is 5,830.8 kJ.

Explanation:

A substance undergoes a change in temperature when it absorbs or gives up heat to the environment around it. However, when a substance changes phase it absorbs or gives up heat without causing a change in temperature. The heat Q that is necessary for a mass m of a certain substance to change phase is equal to:

Q = m*L

where L is called the latent heat of the substance.

In this case:

  • m=2.58 kg
  • The heat of vaporization of water is L=2260*10³ J/kg

Replacing:

Q= 2.58 kg* 2260*10³ J/kg

Q= 5,830,800 J = 5,830.8 kJ (Being 1,000 J= 1 kJ)

<u><em>The amount of heat required to vaporize 2.58 kg of water at its boiling point is 5,830.8 kJ.</em></u>

3 0
3 years ago
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