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Lubov Fominskaja [6]
3 years ago
13

What are the periods and epochs of the Cenozoic era? Please help!

Chemistry
1 answer:
Naya [18.7K]3 years ago
3 0

Answer:

The Cenozoic Era is generally divided into three periods: the Paleogene (66 million to 23 million years ago), the Neogene (23 million to 2.6 million years ago), and the Quaternary (2.6 million years ago to the present); however, the era has been traditionally divided into the Tertiary and Quaternary periods.

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How many grams of ammonia (NH3) will produce<br> 300 grams of N2?<br> 4NH3 + 6NO → 5N2 + 6H2O
jeka57 [31]
Molar mass

NH3 = 17 g/mol
N2 = 28 g/mol

4 NH3 + 6 NO = 5 N2 + 6 H2O

4 x 17 g NH3 ------------ 5 x 28 g N2
?? g NH3 --------------- 300 g N2

300 x 4 x 17 / 5 x 28 =

20400 / 140 => 145.71 g of NH3


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4 years ago
What is the PH of orthophosphoric acid?
Naily [24]

Answer:

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8 0
3 years ago
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a graduated cylinder is filled to 41.5 mL with water and a piece of granite is placed in the cylinder, displacing the level to 4
Maksim231197 [3]

Answer:

The answer is

<h2>6.1 cm³</h2>

Explanation:

To find the volume in cm³ we must first find the volume of the rock .

To find the volume of the rock , subtract the initial volume of water from the final volume of the water when the rock was dropped in it

That's

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volume of rock = 47.6 mL - 41.5 mL

= 6.1 mL

Next we use the conversion

<h3>1 mL = 1 cm³</h3>

If 1 mL = 1 cm³

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Hope this helps you

8 0
4 years ago
Where is the energy for cell division generated?
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Compound A, C6H12 reacts with HBr/ROOR to give compound B, C6H13Br. Compound C, C6H14, reacts with bromine and light to produce
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