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dybincka [34]
3 years ago
12

(reply with the answer or get reported) Please help and thanks​

Chemistry
1 answer:
alexgriva [62]3 years ago
7 0
1. C) 10
2. C) 2.33 mole
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Water is stored where until it is used by the cell
Vadim26 [7]

Answer: The water Inside the cell is stored inside the vacuole(s)

Explanation:

Hope this helps :)

3 0
2 years ago
For the reaction PCl5(g) 4 PCl3(g) 1 Cl2(g) Kp 5 23.6 at 500 K a. Calculate the equilibrium partial pressures of the reactants a
ollegr [7]

Answer: Cl_2 = 42.9 atm, PCl_3 = 93.4 atm and PCl_5 = 7.66 atm

Explanation: The given balanced equation is:

PCl_5(g)\rightleftharpoons PCl_3(g)+Cl_2(g)

K_p=523.6

Initial pressure of PCl_5 = 50.560 atm  

initial pressure of PCl_3 = 50.500 atm

Let's say the change in pressure is p. Then:

equilibrium partial pressure of PCl_5 = (50.560 - p) atm

equilibrium partial pressure of PCl_3 = (50.500 + p) atm

equilibrium partial pressure of Cl_2 = p atm

K_p=\frac{(PCl_3)(Cl_2)}{PCl_5}

Let's plug in the values in it:

523.6=\frac{(50.500+p)(p)}{50.560-p}

on cross multiply:

26473.216-523.6p=50.500p+p^2

on rearranging the above equation:

p^2+574.1p-26473.216=0

It's a quadratic equation. On solving this equation:

p = 42.9

So, the equalibrium partial pressure of Cl_2 = 42.9 atm

equilibrium partial pressure of PCl_3 = 50.500 + 42.9 = 93.4 atm

equilibrium partial pressure of PCl_5 = 50.560 - 42.9 = 7.66 atm

6 0
3 years ago
A cylinder of iron has a mass of 23.45 g. If it is placed on an electronic balance that reports all masses 18.00% too low due to
Ganezh [65]
For the answer to the question above asking what mass will the balance report for the cylinder of iron if a <span>cylinder of iron has a mass of 23.45 g. If it is placed on an electronic balance that reports all masses 18.00% too low due to miscalibration,
</span>A cube has a volume of 8.0 cm3 and a mass of 21.6 grams
Using an electronic analytical balance of graduated cylinder.
The density of iron is 7.87 g/mL.
4 0
3 years ago
An atom of oxygen has six valence electrons. In nature, oxygen is a diatomic molecule and is usually found in the form O2. Why w
zheka24 [161]

Answer:

In order to attain stability

Explanation:

Every chemical bonds that are formed results from the desires of atoms to achieve stability like the inert and nonreactive noble gases. By so doing, their outer shell electrons must be completely filled to attain an octet configuration like the noble gases with eight outermost electrons.

An atom of oxygen has six outer electrons. To complete its octet, it will require just two more electrons.  

This desire will make it bond with another atom. In the vicinity of another oxygen atom, it will bond. The type of bond formed will be a covalent bond which results from each of the oxygen atom sharing two of their valence electrons.

The joint shared electrons will now be four electrons. This four electrons will make each of their octet complete and a covalent bond occurs.

3 0
3 years ago
7th grade science , please don’t get the answer from the internet :(
Liula [17]

Answer:

See the answer below

Explanation:

1. Organisms produce energy for cells by chemically breaking down and unlocking the energy locked-up within food materials in a process known as cellular respiration. The unlocked energy is then utilized for the cell's metabolic activities.

2. Cellular respiration can be aerobic or anaerobic.

Aerobic respiration involves the breakdown of carbohydrates in the presence of oxygen to yield energy in the form of ATP while carbon dioxide and water are produced as by-products.

        C_6H_1_2O_6 + 6O_2 --> 6CO_2 + 6H_2O + ATP

Anaerobic respiration involves the breakdown of carbohydrates in the absence of oxygen to produce ATP and lactic acid as a by-product. The lactic acid is later oxidized to carbon dioxide and water to prevent it from building up.

       C_6H_1_2O_6 -> 2C_3H_6O_3 + ATP

3. Photosynthesis and cellular respiration are both considered metabolic processes that take place in living organisms. However, photosynthesis is peculiar only to green plants and some algae while respiration is common to all living organisms. While photosynthesis is anabolic, that is, it involves the building up of materials; respiration is said to be catabolic because it involves the breaking down of materials.

During photosynthesis, inorganic products are utilized to produce carbohydrates for plants with oxygen gas released as a by-product according to the following equation:

       6CO_2 + 6H_2O --> C_6H_1_2O_6 + 6O_2

During respiration, the food taken by living organisms is broken down to unlock the energy in it for metabolic activities according to the following equation:

     C_6H_1_2O_6 + 6O_2 --> 6CO_2 + 6H_2O + ATP

7 0
2 years ago
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