1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
rusak2 [61]
4 years ago
14

How many covalent bonds are predicted for each atom: (a) F; (b) Si; (c) Br; (d) O; (e) P; (f) S?

Chemistry
2 answers:
GuDViN [60]4 years ago
6 0

Answer:

1 for F

4 for Si

1  for Br

2 for O

3 for P

2 for S

Explanation:

Atoms form bonds with other atoms with the purpose of completing their outer energy levels. So a good strategy of predicting how many bonds an atom will form is to first establish how many electrons it needs to complete its valence shell.

F has 7 valence electrons, it needs one more electron to complete its valence shell so it forms one bond

Si has 4 valence electrons, it needs four more so it forms four bonds

O has 6 valence electrons, it needs two more so it forms two bonds  

evablogger [386]4 years ago
4 0
The <span>covalent bonds are predicted for each atom are :

</span>(a)F = 1
(b) Si = 4
(c) Br = 1
(d) O = 2
(e) P = 3
(f) S = 2
You might be interested in
6 trillion quadrn edgar
Mice21 [21]
6 trillion quadrant
7 0
3 years ago
The normal freezing point of water is 0.00 ⁰C. What is the freezing point of a solution containing450.0 mg of ethylene glycol (M
anyanavicka [17]

Answer:

Freezing T° of solution = - 8.98°C

Explanation:

We apply Freezing point depression to solve this problem, the colligative property that has this formula:

Freezing T° of pure solvent - Freezing T° of solution = Kf . m

Kf = 1.86°C/m, this is a constant which is unique for each solvent. In this case, we are using water

m = molality (moles of solute / 1kg of solvent)

We convert the mass of solvent from g to kg

1.5 g . 1kg/1000g = 0.0015 kg

We convert the mass of solute, to moles. Firstly we make this conversion, from mg to g → 450mg . 1g/1000mg = 0.450 g

0.450 g. 1mol / 62.07g = 7.25×10⁻³ moles

Molality → 7.25×10⁻³ mol / 0.0015 kg = 4.83 m

- Freezing T° of solution = 1.86°C /m . 4.83 m - Freezing T° of pure solvent

-Freezing T° of solution = 1.86°C /m . 4.83 m - 0°C

Freezing T° of solution = - 8.98°C

8 0
3 years ago
Read 2 more answers
Calculate the specific heat capacity of the unknown metal given the
Vedmedyk [2.9K]

Answer: The specific heat capacity of the unknown metal given is 0.466 J/g^{o}C.

Explanation:

Given: Mass = 225 g

Change in temperature = 13^{o}C

Heat energy = 1363 J

The formula used to calculate specific heat is as follows.

q = m \times C \times \Delta T

where,

q = heat energy

m = mass of substance

C = specific heat

\Delta T = change in temperature

Substitute the values into above formula as follows.

q = m \times C \times \Delta T\\1363 J = 225 g \times C \times 13^{o}C\\C = \frac{1363 J}{225 g \times 13^{o}C}\\= 0.466 J/g^{o}C

Thus, we can conclude that the specific heat capacity of the unknown metal given is 0.466 J/g^{o}C.

3 0
3 years ago
While Cameron is intensely working out, his muscles begin to get sore and start to burn. What type of cellular
max2010maxim [7]

Answer:

1) Anaerobic respiration

2) Lactic acid

3) Stop the work out

Explanation:

1) Anaerobic respiration

Muscular anaerobic respiration to produce energy during exercises or workout, takes place when the level of oxygen available for the amount of energy being generated is not sufficient, and the balance generated energy is produced along with lactic acid by anaerobic respiration

2) Lactic acid

The produced lactic acid from the anaerobic respiration at the muscle sites results in a burning sensation being felt during strenuous muscular activity in the presence of low oxygen supply

3) Stop the work out

In order to stop the burning, the muscular activity is to be stopped, to allow the resumption of the aerobic process of energy production, and to allow the produced lactic acid to be cleared

4 0
3 years ago
Compare and contrast continuous spectrum and emission spectrum
lions [1.4K]

the continuous spectrum of white light only deals with the frequencies and wavelengths of colors associated with the rainbow. and the emission spectrum is I think deals with the colors, frequencies, and wavelengths that are released by a particular atom.

5 0
3 years ago
Other questions:
  • A how many hydrogen atoms are in an acyclic alkane with 7 carbon atoms?
    10·1 answer
  • When heated, calcium hydroxide and ammonium chloride react to produce ammonia gas, water vapor, and solid calcium chloride.
    5·1 answer
  • Which is a characteristic of most nonpolar compounds?
    10·2 answers
  • What kind of force acts upon objects submerged in a fluid?
    6·2 answers
  • Which organism is a kind of phytoplankton?
    6·2 answers
  • Highlight the examples of radiation in the passage
    14·1 answer
  • Tutorial Service is considered as what type of product?
    10·1 answer
  • explain observation made when anhydrous calcium chloride and anhydrous copper (ii) sulphate are separately exposed to the atmosp
    10·1 answer
  • Select the correct answer.
    10·2 answers
  • Need help soon as possible
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!