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Illusion [34]
3 years ago
13

Which level of organization is laWhich level of organization is largest?

Chemistry
1 answer:
Damm [24]3 years ago
4 0
Ecosystem is the largest of this list. It contains many populations and communities and organisms.
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Describe uses of H2S as analytical regent
konstantin123 [22]

Answer:

Hydrogen sulfide is used primarily to produce sulfuric acid and sulfur. It is also used to create a variety of inorganic sulfides used to create pesticides, leather, dyes, and pharmaceuticals. Hydrogen sulfide is used to produce heavy water for nuclear power plants (like CANDU reactors specifically).

Explanation:

Sana Po it's help

8 0
3 years ago
Biochemical reactions in your cells occur best at approximately which temperature
timama [110]

Answer:

38°c

Explanation:

Biochemical reactions takes place in our body at an approximate temprature of 38°c...

4 0
3 years ago
Read 2 more answers
An igneous rock is found on the ground and has no identifiable crystals. What is the most likely origin of this rock?
Ivan

Answer:

Its a Extrusive Igneous Rock

Explanation:

They form on the surface where they cool.

6 0
3 years ago
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A sample of oxygen gas has a volume of 36.7 L at 145 kPa and 65. ̊C. What volume will the sample have at STP?
xxTIMURxx [149]
Data Given:

                  Initial Volume = V₁ =  36.7 L

                  Initial Pressure = P₁ =  145 kPa

                  Initial Temperature = T₁ =  65 °C + 273 = 338 K

                  Final Volume = V₂ = ?

                  Final Pressure = P₂ = 101.325 kPa           (Standard Pressure)

                  Final Temperature = T₂ = 273 K                (Standard Temperature)

Formula used:
                      As number of moles are constant, so Ideal Gas equation in following form is used,
                                        P₁ V₁ / T₁  =  P₂ V₂ / T₂
Solving for V₂,
                                    V₂  = P₁ V₁ T₂ / T₁ P₂
Putting Values,

                  V₂ = (145 kPa × 36.7 L × 338 K) ÷ (273 K × 101.325 kPa)

                  V₂ = 1798667 ÷ 27661.25

                  V₂ = 65.02 L
8 0
3 years ago
Concentration of Cl ion of 72.24g NaCl in .862 L solution
Nady [450]

Answer:

Molarity_{Cl^-}=1.434\ M

Explanation:

Moles of NaCl :

Given, Mass of NaCl = 72.24 g

Molar mass of NaCl = 58.44 g/mol

The formula for the calculation of moles is shown below:

moles = \frac{Mass\ taken}{Molar\ mass}

Thus,

Moles= \frac{72.24\ g}{58.44\ g/mol}

Moles\ of\ NaCl= 1.2361\ mol

NaCl is a strong salt. So, moles of chloride ion = 1.2361 moles

Volume = 0.862 L

Molarity=\frac{Moles\ of\ solute}{Volume\ of\ the\ solution}

Molarity_{Cl^-}=\frac{1.2361}{0.862}

Molarity_{Cl^-}=1.434\ M

7 0
3 years ago
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