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3 years ago

Which carbon atom has the most partial positive character?

1 answer:

4 0

A carbon atom would have a partial positive character if it is bonded with a much more electronegative element. The periodic trend for electronegativity is increasing as you go from right to left, and decreasing as you go down a group. Thus, a more electronegative element than carbon would either be nitrogen, oxygen and fluorine. Hence, bonds involving CN, CO and CF would have a partial positive character for carbon.

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In nerve impulse conduction, what happeris after the neurotransmitter is

AURORKA [14]

Answer:

The correct option is;

Action potentials travel the length of the axon

Explanation:

A dendrite are nerve cell projections that are used for receiving signals from other nerve cells

A neurotransmitter is the chemical, produced by the nerve cell to contain the message the nerve cell intends to transmits across a neural junction, to the cell for which the message is meant such as a muscle cell, gland cell, or other nerve cells

Therefore, the received message from the dendrite by the present neuron are transported using action action potential which is the means by which electrical signals are transported by a neuron through the length of the axon which is the projection of the nerve cell, known as the nerve fiber that conducts action potential which are electrical impulses to other destination by traveling the length of the of the axon to the location of the destination cell of the action potential

6 0

3 years ago

What is the boiling point of gold 1064.43°C 2970°C 1313°C 3266°C

Vikentia [17]

Answer:

The melting point of Gold is 1064.43 degrees celsius and the boiling point is 2807 degrees celsius.

8 0

4 years ago

Read 2 more answers

Suppose you have 81.8 g of Cd. How many Cd atoms are present? Report your answer in scientific notation using the format of 6.02

Lostsunrise [7]

Answer:

1. number of Cd atoms = 4.384 × 10²³

2. number of moles of Ti = 0.817 mol

3. molar mass of C₇H₆O₃ = 138.077 g/mol

4. moles of Sildenafil = 0.249 mmol

Explanation:

1. given data

mass of Cd = 81.8 g

number of Cd atoms = ?

molar mass of Cd = 112.411 g/mol

Solution

1st we find out the number of moles of Cd

number of moles = mass / molar mass

number of moles of Cd = 81.8 g / 112.411 g.mol⁻

number of moles of Cd = 0.728 mol

Now we find out the number of Cd atoms

number of atoms = moles × 6.022 × 10²³

number of Cd atoms = 0.728 (6.022 × 10²³)

number of Cd atoms = 4.384 × 10²³

2. Given data

Mass of Ti = 39.1 g

moles = ?

molar mass Ti = 47.867 g/mol

Solution

Now we will find out the number of moles

number of moles = mass / molar mass

number of moles of Ti = 39.1 g / 47.867 g.mol⁻

number of moles of Ti = 0.817 mol

3. Given data

chemical formula of Salicylic acid = C₇H₆O₃

molar mass of salicylic acid = ?

molar mass of carbon = 12.011

molar mass of hydrogen = 1.008

molar mass of oxygen = 15.999

molar mass of molecule = number of moles of atoms × molar mass of atoms

molar mass of C₇H₆O₃ = 7 (12.011) + 6 (1) + 3 (16)

molar mass of C₇H₆O₃ = 84.077 g + 6 g + 48 g

molar mass of C₇H₆O₃ = 138.077 g/mol

4. Given data

molar mass of Sildenafil = 474.5828 g/mol

mass given = 0.118 g

moles of Sildenafil = ?

Solution

Now we find out the number of moles

number of moles = mass / molar mass

number of moles Sildenafil = 0.118 g / 474.5828 g/mol

number of moles Sildenafil = 0.0003 mol

as this is very small amount we convert it into millimoles

millimoles = moles × 1000

millimoles of Sildenafil = 0.000249 × 1000

millimoles of Sildenafil = 0.249 mmol

4 0

3 years ago

A 1.00 L flask is filled with 1.15 g of argon at 25 ∘C. A sample of ethane vapor is added to the same flask until the total pres

tatiyna

Answer:

The partial pressure of argon in the flask = 71.326 K pa

Explanation:

Volume off the flask = 0.001 $m^{3}$

Mass of the gas = 1.15 gm = 0.00115 kg

Temperature = 25 ° c = 298 K

Gas constant for Argon R = 208.13 $\frac{J}{kg k}$

From ideal gas equation P V = m RT

⇒ P = $\frac{m R T}{V}$

Put all the values in above formula we get

⇒ P = $\frac{0.00115}{0.001}$ × 208.13 × 298

⇒ P = 71.326 K pa

Therefore, the partial pressure of argon in the flask = 71.326 K pa

4 0

4 years ago

Help asap

lorasvet [3.4K]

A suitable hypothesis might be that temperature affects the rate of chemical modification, and the independent variable is temperature.

<h3>What is a hypothesis?</h3>

A hypothesis is a given explanation about a question that emerged by observing form the real world.

In this case, the dependent variable is the rate of chemical modification because this variable is modified in the experiment.

In conclusion, a suitable hypothesis might be that temperature affects the rate of chemical modification, and the independent variable is temperature.

Learn more about the hypothesis here:

brainly.com/question/11555274

#SPJ1

5 0

2 years ago