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Yuri [45]
2 years ago
6

Click the link here to open the atom-building interactive, and click the atom square. Use the interactive to

Chemistry
2 answers:
olga55 [171]2 years ago
7 0

Answer:

2 protons, 1 electron, 7 neutrons, and 3 electrons

Explanation:

Make a He atom with a mass of 4. How many protons did you put in the nucleus?

2 protons

Make a Li atom with a mass number of 7. How many electrons did you place in the outermost orbital  (ring)?

1 electron

Make a N atom with a mass number of 14. How many neutrons are in the nucleus?

7 neutrons

Make a B atom with a mass number of 11. How many electrons did you put in the second orbital (ring)?

3 electrons

Yuliya22 [10]2 years ago
3 0

Answer:

Make a He atom with a mass of 4. How many protons did you put in the nucleus?  

✔ 2

Make a Li atom with a mass number of 7. How many electrons did you place in the outermost orbital (ring)?  

✔ 1

Make a N atom with a mass number of 14. How many neutrons are in the nucleus?  

✔ 7

Make a B atom with a mass number of 11. How many electrons did you put in the second orbital (ring)?  

✔ 3

Explanation:

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It takes 330 j of energy to raise the temperature of 14.6 g of benzene from 21.0 °c to 28.7 °c at constant pressure. What is the
Akimi4 [234]

The mathematical expression for heat capacity at constant pressure is given as:

Q=n\times C_{p}\times \Delta T   (1)

where, Q = heat capacity

C_{p} =  molar heat capacity at constant pressure

\Delta T = change in temperature

n = number of moles

Therefore, \Delta T = 28.7^{o}C-21^{o}C

= 7.7 ^{o}C

Number of moles  =\frac{given mass in g}{molar mass}

= \frac{14.6 g }{78.11 g/mol}

= 0.186 mole

Put the values in formula (1)

330 J=0.186 mole\times C_{p}\times (7.7 ^{o}C+ 273) (conversion of degree Celsius into kelvin)

C_{p} = \frac{330 J}{0.186 mole\times 280.7 K}

= \frac{330 J}{52.2102 mole K}

= 6.32 J /mol K

Hence, molar heat capacity of benzene at constant pressure  = 6.32 Jmol^{-1} K^{-1}

6 0
2 years ago
A scientist performs an experiment in which they create an artificial cell with a selectively permeable membrane through which o
lozanna [386]

Answer:

Water moves into the cell

Explanation:

As shown in the question above, the cell is high in glucose and placed in a glass filled with water. This cell has a semi permeable membrane that allows only water to pass through, as the concentration of water within the cell is low, the cell will attempt to strike a balance with the medium it is inserted into. For this reason, what is likely to happen is the passage of water from the most concentrated to the least concentrated medium, that is, the water will pass from the cup to the cell.

water moves into the cell through osmosis.during osmosis water moves from a region of low concentration of solute to a region of high concentration of solute.the glucose introduced into the cell makes it more concentrated.

In this case the cell is hypertonic and water would enter into the cell through the semi permeable membrane.this membrane allows water to pass through but not glucose.this movement of water into the cell causes the cell to become turgid.

8 0
2 years ago
Determine whether the statement is true or false, and why? “Climate change could cause many habitats to be destroyed, leading to
77julia77 [94]

Answer:

False. It should read that both plant and animal species are in danger of extinction, and climate change can destroy habitats.

Explanation:

8 0
2 years ago
Question 21 (2 points)
m_a_m_a [10]

Answer:

i would say sensory memory, aka muscle memory.

Explanation:

8 0
2 years ago
Read 2 more answers
A sample of gasoline contains various hydrocarbons, which comprise atoms of carbon, hydrogen, and oxygen. The hydrocarbons mix t
Naddika [18.5K]

Answer:

  • mixture
  • homogenous mixture  (of hydrocarbons)
  • compound

Explanation:

Mixture can be easily separated by physical methods. Homogeneity and heterogeneity of a mixture is determined by whether the components there in are in a single phase and evenly distributed or not.

A solution has a solute evenly dissolved in  solvent to form a liquid substance.

An element is the basic form of  substance which cannot be broke down into any other simpler unit.  

I hope this was helpful.

4 0
2 years ago
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