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ANTONII [103]
4 years ago
10

Give three examples of elements that are gases at room temperature

Chemistry
1 answer:
frez [133]4 years ago
3 0

Hydrogen, oxygen and nitrogen.

Also, chlorine and fluorine.

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What is the role of the fungus in the food web shown?
vredina [299]

A. to remove dead organisms

Explanation:

The role of the fungus is to remove dead organisms from the ecosystem.

Decomposers plays very important role in the ecosystem.

  • They allow for the continuous cycling of materials there in.
  • Fungus and other micro-organisms are decomposers.
  • They take up the remains of other plant and animal matter and breaks them down.
  • this releases nutrients back to the soil and useful gases to the atmosphere.

learn more;

Decomposers brainly.com/question/12823338

#learnwithBrainly

7 0
3 years ago
Select the correct answer.
jeyben [28]

Answer:

A. Second

Explanation:

The S.I unit of time is in Seconds.

The S. I unit is known as the metric system is the most commonly used system of reporting scientific measurements in the world today. Other units are the imperial units.

It is the international system of unit used in almost all countries. The seven basic SI units are:

        Quantities                                    Units

  • Length                                         meters(m)    
  • Time                                            seconds(s)
  • Amount of substance                 moles(mol)
  • Mass                                            kilograms(kg)
  • Luminous intensity                     candela(cd)
  • Temperature                               kelvin(K)
  • Electric current                            ampere(A)

The SI unit of time which measures the duration of an activity or event is therefore given as seconds(s)

3 0
4 years ago
What are the chemical processes used to make chloroquine?
4vir4ik [10]
You spell Chlorine wrong but the process is called electrolysis  
6 0
4 years ago
A 13.5 g sample of an unknown gas occupies 5.10 L at 149.83 kPa and 301 K. What is the molar mass of the gas ?
alisha [4.7K]

Answer:

The molar mass of the gas is 44.19 g/mol

Explanation:

Amount of sample of gas = m = 13.5 g

Volume occupied by the gas = V = 5.10 L

Pressure of the gas = P = 149.83 KPa

1 KPa = 0.00986 atm

P = 149.83 \textrm{ KPa} \times 0.00986 \textrm{ atm/KPa} = 1.48 \textrm{ atm}

Assuming M g/mol to be the molar mass of the gas

Assuming the gas is behaving as an ideal gas

\textrm{PV} =\textrm{nRT} \\\textrm{PV} = \displaystyle \frac{m}{M}\textrm{ RT } \\1.48 \textrm{ atm}\times 5.10 \textrm{ L} = \displaystyle \frac{13.5 \textrm{ g}}{M}\times 0.0821 \textrm{ L.atm.mol}^{-1}.K^{-1}\times 301\textrm{K} \\M = 44.19 \textrm{ g/mol}

The molar mass of gas is 44.19 g/mol

7 0
4 years ago
PLEASE HELP Describe at least two advantages and two disadvantages of using hydropower as a
Hatshy [7]

Answer:

Advantage: Hydropower is a fueled by water, so it's a clean fuel source.

Advantage: It is a domestic source of energy in the US.

Disadvantage: Fish populations can be impacted if fish cannot migrate upstream past impoundment dams to spawning grounds or if they cannot migrate downstream to the ocean.

Disadvantage: Hydropower plants can be impacted by drought. When water is not available, the  hydropower plants can't produce electricity.

Explanation:

3 0
3 years ago
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