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3 years ago

What is the "mass number"? What does the mass number tell you?

1 answer:

6 0

Total number of protons and neutrons in the atomic nucleus. When you see a periodic table the order is usually the atomic number, the element symbol, the name, and then the atomic mass.

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In 1906 Harden and Young, in a series of classic studies on the fermentation of glucose to ethanol and CO2 by extracts of brewer

Ludmilka [50]

Answer:

Answers to the (B) Part

1. A

2. D

3. B

Explanation:

Explanation of the (A) Part

G-3-P, also known as Glyceraldehyde-3-Phozphate.

In the dehydrogenase process of G-3-P, phosphate is a compulsory requirement.

During this process, the G-3-P is hereby changed or converted into 1,3-bisphosphoglycerate in presence of NAD+ and Pi. Note that the exhaustion of Pi signal the end of the glycolysis process.

Because there's is glucose in abundance (excess), the glucose is thus, phosphorylated to ATP but no Pi gets released.

During fermentation, CO₂ and Ethanol are produced. But if there's no fermentation of ethanol in the absence of oxygen (anaerobic condition) , the NADP+ will piled up.. So, no new NAD+ would be available for further glycolysis.

Pyruvate is converted to ethanol and CO2 to replenish NAD+ for glycolysis to proceed.

The hexose phosphate is piled up or accumulated to fructose 1, 6 bisphosphate.

The point between the energy input reaction preceding it and the energy forming reaction after it serves as the intermediary of the reaction.

Because of unavailability of P, G-3-P is not broken down. Hence, the reaction will backflow to fructose 1, 6 bisphosphate, which is more stable.

5 0

4 years ago

What are the total balance electrons? PHOTO ABOVE

WINSTONCH [101]

Answer: H2O has 8 electrons, GeBr4 has 32 electrons, and RbHO has 37 electrons.

Hope this helped! :)

3 0

3 years ago

How much time will you save on a ten mile trip if u travel at 60mph rather than at 55mph?

elena-14-01-66 [18.8K]

Time = Distance/Rate

for 60 mph

Time = 10 miles/60 mph

= 0.1666 * 60 minutes = 10 minutes

for 55 mph

Time = 10 miles/55 mph

= 0.181818 * 60 minutes = 10.90 minutes

3 0

3 years ago

Read 2 more answers

The graph represents the amount of energy in the

Vitek1552 [10]

Answer: The correct answer is in an exothermic reaction the energy of the product is less than the energy of the reactants.

Explanation: got it

6 0

3 years ago

You placed 43.1 g of an unknown metal at 100 °C into a coffee cup calorimeter that contained 50.0 g of water that was initially

nika2105 [10]

Answer :

(a) The heat released by the metal is -312.48 J

(b) The specific heat of the metal is $0.0944J/g^oC$

Explanation :

For part A :

Heat released by the metal = Heat absorbed by the calorimeter + Heat absorbed by the water

$q=[q_1+q_2]$

$q=[c_1\times \Delta T+m_2\times c_2\times \Delta T]$

where,

q = heat released by the metal

$q_1$ = heat absorbed by the calorimeter

$q_2$ = heat absorbed by the water

$c_1$ = specific heat of calorimeter = $51.5J/^oC$

$c_2$ = specific heat of water = $4.184J/g^oC$

$m_2$ = mass of water = 50.0 g

$\Delta T$ = change in temperature = $(T_{final}-T_{initial})=23.2-22.0=1.2^oC$

Now put all the given values in the above formula, we get:

$q=[(51.5J/^oC\times 1.2^oC)+(50.0g\times 4.184J/g^oC\times 1.2^oC)]$

$q=312.48J$

Thus, the heat released by the metal is -312.48 J

For part B :

$q=m\times c\times \Delta T$

q = heat released by the metal = -312.48 J

m = mass of metal = 43.1 g

c = specific heat of metal = ?

$\Delta T$ = change in temperature = $(T_{final}-T_{initial})=23.2-100=76.8^oC$

Now put all the given values in the above formula, we get:

$-312.48J=43.1g\times c\times 76.8^oC$

$c=0.0944J/g^oC$

Thus, the specific heat of the metal is $0.0944J/g^oC$

8 0

4 years ago