CHEMISTRY HIGH SCHOOL

The bond between F and Cl would be:A) nonpolar covalent
B) polar covalent
C) ionic
D) metallic

Answers

Answer 1
Answer:  It would be a polar covalent bond. The two atoms have different electronegativities, and I'm pretty sure they are sufficiently different to classify the bond as polar.
Answer 2
Answer: i belive the answer is C) ionic

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A covalent bond forms a. when an element becomes a noble gas.
b. when atoms share electrons.
c. between metals and nonmetals.
d. when electrons are transferred from one atom to another.

Answers

B.) When atoms share electrons/......

Write M if the unit is that of a mass, V if the unit is that of a volume,and D if the unit is that of a density.

Answers

Answer:

6) V     7) M     8) V     9) D     10) D     11) M     12) D     13) V

Explanation:

Volume- cm^3, ml, etc.

Mass- g/cm^3, g/ml, etc.

Density- g, kg, etc.

How is an ionic bond formed

Answers

Ionic bonding is the complete transfer of valence electron(s) between atoms
An electron is transferred from one atom to another.

How many particles are in 3 moles?

Answers

\rm 1.81* 10^2^4 number of particles are present in 3 moles.

What are moles?

The mole is a SI unit of measurement that is used to calculate the quantity of any substance.

1 mol =

We know that 1 mol = 6.02* 10^2^3

so, 3 mol =

3 mol* (6.02* 10^2^3 )/(1 mol) = 1.81* 10^2^4 particles.

Thus, the number of particle is \rm 1.81* 10^2^4

Learn more about moles, here:

brainly.com/question/15209553
We know that 1 mol= 6.02*10^23 particles.

3 mol* (6.02*10^23 particles/ 1 mol)= 1.81*10^24 particles.

The final answer is 1.81*10^24 particles~

Which of the following is not a phase change?melting of snow
evaporation of water from the ocean
condensation of water vapor to form clouds
hydrogen and oxygen gas combining to form water vapor

Answers

Answer : The correct option is hydrogen and oxygen gas combining to form water vapor.

Explanation :

Phase change : It is a change from one state to another state without changes in chemical composition.

Phase change such as solid to liquid, liquid to vapor, vapor to liquid, liquid to solid, vapor to solid, solid to vapor.

  • Melting of snow is a fusion process in which phase changes from solid to liquid.
  • Evaporation of water from the ocean is a evaporation process in which phase changes from liquid to vapor.
  • Condensation of water vapor to form clouds  is condensation process in which phase changes from vapor to liquid.
  • Hydrogen and oxygen gas combining to form water vapor, there is no phase change in this reaction because a gas combine with another gas to form a water vapor as a gas.
hydrogen and oxygen gas combining to form water vapor is the correct answer.

What is the pressure in a gas container that is connected to an open-end u-tube manometer if the pressure of the atmosphere is 742 torr and the level of mercury in the arm connected to the container is 8.60 cm higher than the level of mercury open to the atmosphere?

Answers

First, know that 8.60 cm = 86.0 mm, which is equivalent to an 86.0 torr pressure difference between the atmosphere and the container. 

In this situation the pressure in the container is less than the atmosphere.  

742 - 86 = 656 torr

Answer: 656 mmHg

Explanation:

Manometers are used to measure the pressure in a container by comparing it to normal atmospheric pressure.

First convert the atmospheric pressure to mmHg

1 torr = 1 mmHg

Therefore, the atmospheric pressure = 742 mmHg

Since the arm connected is higher than the level of the Mercury open to the atmosphere, then the gas pressure is lower than the atmospheric pressure.

Hence,

Pgas = Patm - change in height

Pgas = 742 mmHg - 8.6 cmHg

Balance the unit: 10 mm = 1 cm

Then,

Pgas = 742 mmHg - 86 mmHg

Pgas = 656 mmHg

The gas pressure in the container is 656 mmHg.

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