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Otrada [13]
3 years ago
14

Select all the correct answers.

Chemistry
2 answers:
zloy xaker [14]3 years ago
5 0

the algal population will decrease.

vladimir1956 [14]3 years ago
4 0

Answer:

The population of predatory fishes will change.

The biodiversity of the ecosystem will decrease.

Explanation:

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A + c = r solve for a
Xelga [282]

Answer: A = -c + r

Explanation:

3 0
3 years ago
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According to newtons first law of motion, which of the following objects will change its motion?
mel-nik [20]
Well an object in motion will stay in motion unless acted upon by the force, but what are the objects?
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3 years ago
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For the equilibrium reaction 2so2(g) + o2(g) 2so3(g), δhºrxn = –198 kj/mol. which one of these factors would cause the equilibri
Airida [17]
Let's rewrite the reaction for clarity:

 2 SO₂(g) + O₂(g) ⇆ 2 SO₃(g)            δhºrxn = –198 kj/mol

The equilibrium constant of a reaction is the ratio of the concentration its products to its reactants which are raised to their respective stoichiometric coefficients. For this reaction, the K would be

K = [SO₃]²/[SO₂]²[O₂]

To get a larger K, the products must be greater than the reactants. This means that the forward reaction must be favored to yield more of the product SO₃. There are different ways to do this: by manipulating the pressure, concentration or temperature.

For the concentration, you should add more amounts of the reactants. For the pressure, we should increase it. This is because the product side has only 2 moles of gas compared to 3 moles of gas in the reactants. So, it wall have more room for the product even at a higher pressure. Lastly, since the reaction is exothermic manifested by the negative sign of δhºrxn , the reaction would favor the forward reaction at high temperatures.
5 0
3 years ago
At 25.0 °C the Henry's Law constant for sulfur hexafluoride (SP) gas in water is 2.4x 10 M/atm Calculate the mass in grams of SF
Dmitry_Shevchenko [17]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The mass is m =  0.0349 \ g

Explanation:

From the question we are told that

   The Henry's Law constant is  k = 2.4 *10^{10} M/atm

   The volume of water is V = 525 \ ml = 0.525 \ L

   The partial pressure is  P =  1.90 \ atm

   The temperature is T  = 25 ^oC

Henry's  law is mathematically represented as

       C  = P * k

Where C is  the concentration of sulfur hexafluoride(SP)

substituting value

        C = 1.90 * 2.4*10^{-4}

        C = 4.56*10^{-4} \ M

The number of moles of  SP is mathematically represented as

        n = C * V

substituting value

       n =  0.525 * 4.56*10^{-4}

       n =  2.39 *10^{-4} \ moles

The mass of SP that dissolved is

          m = n * Z

Where Z is the molar mass of SP which has a constant value of

           Z = 146 g/mole

So

         m =  2.394*10^{-4} * 146

         m =  0.0349 \ g

6 0
3 years ago
Metallic ions are best described as: anions giving up electrons and attracting each other anions together in a sea of electrons
Alex73 [517]

Answer: cations together in a sea of electrons

Explanation:

Metallic bonding is the type of chemical bonding occurs between the atoms of a metals. In this type of bonding arises due to electrostatic interaction between the electron cloud of de-localized electrons with positively charges metal ions called as cations.

These de-localized electrons are the valence electrons of metal atoms which are shared between them.

In ionic bonding , the cations are attracted to anions where cations are formed by loss of electrons by metals and anions are formed by gain of electrons by non metals.

5 0
3 years ago
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