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Gnesinka [82]
3 years ago
15

The taxonomic classification system contains three Domains . List all 3 Domains: (Hint: last 3 slides of the PDF Power Point wil

l all give the answer
Chemistry
1 answer:
tino4ka555 [31]3 years ago
4 0

Answer:

Archaea,  Bacteria, and Eukarya.

Explanation:

hope this helped

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A sample of gas occupies 250 mL at STP. What is the temperature if the gas expands to 1500 mL at a pressure of 0.500 atm? *
3241004551 [841]

Answer:

819 K

Explanation:

Given data

  • Initial pressure (P₁): 1 atm (standard pressure)
  • Initial volume (V₁): 250 mL
  • Initial temperature (T₁): 273.15 K (standard temperature)
  • Final pressure (P₂): 0.500 atm
  • Final volume (V₂): 1500 mL
  • Final temperature (T₂): ?

We can find the final temperature using the combined gas law.

\frac{P_1 \times V_1 }{T_1} = \frac{P_2 \times V_2 }{T_2}\\T_2 = \frac{P_2 \times V_2 \times T_1 }{P_1 \times V_1} = \frac{0.500atm \times 1500mL \times 273.15K }{1atm \times 250mL}=819K

6 0
3 years ago
A gas occupies a volume of 410 mL at 27°C and 740 mm Hg pressure. Calculate the volume the gas
murzikaleks [220]

Answer:

The volume of gas is 58.22 L which will occupy at 250.°C and 680 mm Hg pressure.

Explanation:

Given:

Temperature = 27°C

To make it into kelvin   = 27+273

 = 300K

Pressure  =740mm Hg

to make it in atm.  = \frac{740}{760}

= 0.973atm

n   = 2.3 moles

Volume of gas =?

 As we know according to the formula

 PV   = nRT

V= \frac{nRT}{P}

On substituting the values

 = \frac{2.3\times0.0827\times300}{0.973}

= 58.22 L

Therefore, 58.22L volume of gas will occupy at 250.°C and 680 mm Hg pressure.

8 0
3 years ago
the air pressure from the atmosphere measures 0.5atm at an altitude of 18,000 ft. How much pressure is this in pounds per square
Nutka1998 [239]

Answer:

7.5 pounds per square-inch

At sea level, one square-inch of any surface has about 15 pounds of air sitting on top of it. At 18,000 feet, that same square inch has only 7.5 pounds per square-inch (psi) exerted on it.

6 0
3 years ago
34.2 gram of sucrose is dissolved in 180 gram water. Calculate the number of hydrogen and oxygen atoms present in the solution.
Naddika [18.5K]

Explanation:

34.2g of C12H22O11 is dissolved in 180g of H20.

Molar mass of sucrose = 342g/mol

Moles of sucrose = 342 / 34.2 = 10 mol.

Molar mass of water = 18g/mol

Moles of water = 180 / 18 = 10 mol.

For hydrogen atoms, there are 22 * 10 in sucrose and 2 * 10 in water, which gives a total of 240.

For oxygen atoms, there are 11 * 10 in sucrose and 1 * 10 in water, which gives a total of 120.

8 0
3 years ago
I need help ASAP please<br> Calculating pH<br> See chart below
laila [671]

Answer:

12, basic, 9, basic

Explanation:

pH = -log[H+]

Using the data in the table, you can calculate the pH:

-log[1e-12] = 12

-log[1e-9] = 9

To find out whether it is acidic, basic, or neutral, use a pH scale. Anything less than 7 is acidic, anything over is basic. Knowing this, both will be basic.

5 0
3 years ago
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