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Ksenya-84 [330]
3 years ago
11

Please answer this I need it answered really soon thank you so much whoever answers this and I will give BRAINLIEST!!

Chemistry
2 answers:
max2010maxim [7]3 years ago
3 0

Answer:

B extinction

Explanation:

as the species does not exist any more, the species is extinct, therefore making the pictured fossil of an extinct species

hope this helps

LiRa [457]3 years ago
3 0

Answer:

B

Explanation:

As the species no longer exists, it is an example of extinction, the termination of a species.

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3 years ago
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What is the mass in grams of 1.5*10^-3 mol of sodium
Nutka1998 [239]
The Formula to find the number of moles is:
Number of Moles = Mass/ Molar Mass

Which means that Mass = Number of Moles * Molar Mass

We know that Number of Moles of Sodium Na = 1.5*10^_{-3} moles 
If you check the Periodic Table, Molar Mass of Sodium Na = 23g/mol

So, Mass = 1.5*10^_{-3} * 23 = 3.45 * 10^{-2} 

So, the mass in grams of  1.5*10^_{-3} mol of Sodium is 3.45 * 10^{-2}

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4 0
3 years ago
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A sample of diborane gas has a pressure of 345 torr at a temperature of -15c and volume of 3.48L if conditions are changed so th
kap26 [50]

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Explanation:

using

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where p1= 345torr

T1, tempertaure= -15c+ 273=258K

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4 0
3 years ago
Which response gives the products of hydrolysis
Pie

Answer:

NH₃ and H⁺

Explanation:

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Hence , the reaction is -

NH₄Cl  →  NH⁴⁺   +   Cl⁻

We can conclude that  NH₄Cl can be formed from the ions , NH⁴⁺  and Cl⁻

Hence ,

According to the reaction ,

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Therefore ,

The reactant that will lead to the formation of NH₄Cl are -  NH₃ and H⁺

8 0
3 years ago
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Help please number 7 and 8 the
Ira Lisetskai [31]

Answer:

Rover has wheels

Orbiter has neither

You need to pack all of your supplies up tightly. You need to bring a bunch of food in packages.  

Explanation:

7 0
3 years ago
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