3 years ago

Although almost 80% of the atmosphere is made up of nitrogen gas, most living things

1 answer:

6 0

Answer:

We don’t have the enzymes necessary to remove nitrogen from the atmosphere; we get our nitrogen from the food we eat. ^^

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On the periodic table, the average atomic mass for carbon is 12.01 g. Why is it not exactly 12.00?

KiRa [710]

The average the natural abundances of the various isotopes of carbon to arrive at the fractional mass.

5 0

3 years ago

2.0 L of oxygen gas and 8.0 L of nitrogen gas at STP are mixed together. The gaseous mixture is compressed to occupy 2.0 L at 29

otez555 [7]

Answer:

5.5 atm

Explanation:

Step 1: Calculate the moles in 2.0 L of oxygen at STP

At STP, 1 mole of an ideal gas occupies 22.4 L.

2.0 L × 1 mol/22.4 L = 0.089 mol

Step 2: Calculate the moles in 8.0 L of nitrogen at STP

At STP, 1 mole of an ideal gas occupies 22.4 L.

8.0 L × 1 mol/22.4 L = 0.36 mol

Step 3: Calculate the total number of moles of the mixture

n = 0.089 mol + 0.36 mol = 0.45 mol

Step 4: Calculate the pressure exerted by the mixture

We will use the ideal gas equation.

P × V = n × R × T

P = n × R × T / V

P = 0.45 mol × (0.0821 atm.L/mol.K) × 298 K / 2.0 L = 5.5 atm

3 0

3 years ago

The formulas for elements never contain a subscript true or not true

Andru [333]

The answer should be false. Elements contain only one atom.

7 0

3 years ago

Would you see more living things in a Biome or an Ecosystem?

kicyunya [14]

Answer:

A Biome is way bigger than a ecosystem

Explanation:

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3 years ago

Read 2 more answers

A transverse wave that has electrical and

Semenov [28]

Electromagnetic energy would be your answer :)

6 0

2 years ago