Answer:
0.062 moles of hydrogen gas
Explanation:
We must first out down the reaction equation before we can attempt to solve the problem.
Mg(s) + 2HCl(aq) ----> MgCl2(aq) + H2(g)
Next we obtain the number of moles in 1.5 g of magnesium metal from;
Molar mass of magnesium = 24.3 gmol-1
Number of moles of magnesium= mass/molar mass = 1.5g/24.3gmol-1 = 0.062 moles
From the reaction equation;
1 mole of magnesium metal yields 1 mole of hydrogen gas
0.062 moles of magnesium metal will yield 0.062 moles of hydrogen gas
Therefore, reaction of 1.5g of magnesium metal with excess hydrochloric acid will yield 0.062 moles of hydrogen gas.
The body gets the needed mineral from the food we eat aka iron soduime and carbohydrates
In a plant cell, photosynthesis and cellular respiration can both take place simultaneously. Plants carry out both photosynthesis and cellular respiration during the day. Cellular respiration continues because it provides the energy required for essential cell functions.
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What role of photosynthesis and respiration in plant?</h3>
Water and carbon dioxide are changed into oxygen and glucose during photosynthesis. The plant consumes glucose and produces oxygen as a byproduct.
Oxygen and glucose are transformed into water and carbon dioxide during cellular respiration. By-products of the process include carbon dioxide, water, and ATP, which is turned into energy.
To power cellular respiration, photosynthesis uses the energy it produces. During photosynthesis, solar energy is used, collected, and stored in the bonds of glucose molecules.
Therefore, photosynthesis and respiration not involve energy formation cycle.
Learn more about photosynthesis and respiration here:
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Answer:
The answer is A!
Explanation:
Because liquids and gases move, soilds will stay in place unless you move it.
Answer:
The correct answer will be option-B.
Explanation:
Sertoli cells are the large somatic cells present in the testis which helps in the formation of spermatozoa. The Sertoli cells create a suitable environment for the production and maturation of the sperms as they produce certain molecules which nourishes the sperms.
The Sertoli cells act as a barrier between the testis and blood and secrete enzymes like inhibin. They eliminate the apoptotic germ cells and also produce seminiferous fluid to nourish the sperm. They do not play any role in primary spermatocytes.
Thus, Option-B is the correct answer.
