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SCORPION-xisa [38]
3 years ago
12

I neeeeed helppppp pleaaaase

Chemistry
1 answer:
Len [333]3 years ago
6 0
The only way to guarantee a spontaneous reaction is to have the enthalpy decrease, and the entropy increase.
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The alternative pathways of photosynthesis using the c4 or cam systems are said to be compromises. why?
frosja888 [35]
 It is because C4 compromises on water loss and CAM compromises on photorespiration. and Both minimize photorespiration but expend more ATP during carbon fixation. 
7 0
4 years ago
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Balanced Chemical Equation: 2H2(g)+O2(g)——> 2H2O(g)
Tcecarenko [31]

You must use 134 g O₂ to produce 118 g H₂O.

\%\text{ yield} = \frac{\text{actual yield}}{\text{theoretical yield}} \times 100 \%

\text{Theoretical yield} = \text{Actual yield}\times \frac{100\%}{\%\text{ yield}} = \text{118 g }\times \frac{100 \%}{78.2 \%} = \text{150.9 g}

M_r:          32.00    18.02  

         2H₂ + O₂ ⟶ 2H₂O

Moles of H₂O = 150.9 g H₂O × (1 mol H₂O/18.02 g H₂O) = 8.374 mol H₂O

Moles of O₂ = 8.374 mol H₂O × (1 mol O₂/2 mol H₂O) = 4.187 mol O₂

Mass of O₂ = 4.1877 mol O₂ × (32.00 g O₂/1 mol O₂) = 134 g O₂

6 0
4 years ago
Is the following reaction feasible at 340K? Mg + ZnO -> MgO + Zn Enthalpy Data: Mg: 0 kJ/mol ZnO: -348 kJ/mol MgO: -602 kJ/mo
USPshnik [31]
The answer is A
Explanation
3 0
4 years ago
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How are water-based solutions formed?
drek231 [11]

Answer:

D. Solutions are formed when the water’s polar molecules separate the polar molecules of an ionic or molecular compound.

Explanation:

Solutions are homogeneous mixtures formed by interaction between solutes and solvents.

Water based solutions have water as the solvents and mostly ionic and molecular compounds as their solutes.

Water is a polar solvent that is capable of dissolving many compounds by hydrating them. The molecules of water surrounds the solute and forces them  to separate.

6 0
3 years ago
What is one way to test weather an unknown solution is acidic or basic ?
alisha [4.7K]

Use indicators such as :

Indicator                   Color in acid          Color in alkali

<em>methy lorange</em>                red                           yellow

<em>phenolphthalein</em>           colorless                     pink

5 0
4 years ago
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