Under normal conditions, NaOH completely ionizes as: NaOH ->

Write a summary of the science of muscle growth?

frez [133]

Answer:Muscle growth or “skeletal muscle hypertrophy,” as it's called at science parties) is the result of a complex process that adds more myosin “filaments” to each muscle fiber. This makes the “engine” of the cell bigger and stronger over time. ... This process is called muscle protein synthesis, or MPS. Skeletal muscle is composed of thread-like myofibrils and sarcomeres that form a muscle fiber and are the basic units of contraction. The 650 skeletal muscles in the human body contract when they receive signals from motor neurons, which are triggered from a part of the cell called the sarcoplasmic reticulum.

4 0

3 years ago

Which statement is true about the following isotopes: Sulfur-34, Sulfur-33 and Sulfur-32? (Choose all that apply)

Step2247 [10]

Answer:

the different isotopes vary in their relative abundance in nature

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3 years ago

You mix 200. mL of 0.400M HCl with 200. mL of 0.400M NaOH in a coffee cup calorimeter. The temperature of the solution goes from

GuDViN [60]

Answer : The enthalpy of neutralization is, 56.012 kJ/mole

Explanation :

First we have to calculate the moles of HCl and NaOH.

$\text{Moles of HCl}=\text{Concentration of HCl}\times \text{Volume of solution}=0.400mole/L\times 0.200L=0.08mol$

$\text{Moles of NaOH}=\text{Concentration of NaOH}\times \text{Volume of solution}=0.400mole/L\times 0.200L=0.08mol$

The balanced chemical reaction will be,

$HCl+NaOH\rightarrow NaCl+H_2O$

From the balanced reaction we conclude that,

As, 1 mole of HCl neutralizes by 1 mole of NaOH

So, 0.08 mole of HCl neutralizes by 0.08 mole of NaOH

Thus, the number of neutralized moles = 0.08 mole

Now we have to calculate the mass of water.

As we know that the density of water is 1 g/ml. So, the mass of water will be:

The volume of water = $200mL+200L=400mL$

$\text{Mass of water}=\text{Density of water}\times \text{Volume of water}=1g/ml\times 400mL=400g$

Now we have to calculate the heat absorbed during the reaction.

$q=m\times c\times (T_{final}-T_{initial})$

where,

q = heat absorbed = ?

$c$ = specific heat of water = $4.18J/g^oC$

m = mass of water = 400 g

$T_{final}$ = final temperature of water = $27.78^oC=273+25.10=300.78K$

$T_{initial}$ = initial temperature of metal = $25.10^oC=273+27.78=298.1K$

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

$q=400g\times 4.18J/g^oC\times (300.78-298.1)K$

$q=4480.96J$

Thus, the heat released during the neutralization = -4480.96 J

Now we have to calculate the enthalpy of neutralization.

$\Delta H=\frac{q}{n}$

where,

$\Delta H$ = enthalpy of neutralization = ?

q = heat released = -4480.96 J

n = number of moles used in neutralization = 0.08 mole

$\Delta H=\frac{-4480.96J}{0.08mole}=-56012J/mole=-56.012kJ/mol$

The negative sign indicate the heat released during the reaction.

Therefore, the enthalpy of neutralization is, 56.012 kJ/mole

8 0

3 years ago

What will happen if fossil fuels don't exist??

Vilka [71]

Answer:

When fossil fuels are no longer available—especially if it happens abruptly, which it potentially will—we're going to see patients dying in hospitals and healthcare facilities due to electricity failure, and this will be particularly acute during natural disasters.”

6 0

3 years ago

Read 2 more answers

The balanced equation below represents the reaction between a 5.0 gram sample of zinc metal and 0.5 M of hydrochloric acid. The

mezya [45]

Answer:

1) Increasing the concentration of HCl [HCl] will increase the reaction rate.

2) The potential energy diagram is shown in the attached image.

3) Because of it is an irreversible reaction that goes to the forward direction . The reaction takes place till HCl dissolves Zn completely.

Explanation:

Q1: State one change in reaction conditions, other than adding catalyst, that will increase the rate of the reaction.

The rate of the reaction, dissolving Zn in HCl, depends on the concentration of HCl.

Rate = k[HCl]².

Rate ∝ [HCl]².

The rate is directly proportional to the concentration of HCl raised to the power 2,

So, increasing the concentration of HCl [HCl] will increase the reaction rate.

Q2: Draw a potential energy diagram for this reaction.

Since the reaction releases energy that appears in the products side. So, the reaction is an exothermic reaction.

In an exothermic reaction, the energy of the reactants is higher than that of the products.

The potential energy diagram is shown in the attached image.

Q3: Explain why this reaction will not reach equilibrium.

Because of it is an irreversible reaction that goes to the forward direction . The reaction takes place till HCl dissolves Zn completely.

5 0

3 years ago