CHEMISTRY HIGH SCHOOL

The tetragonal crystal system below possesses how many faces?2 faces

4 faces

6 faces

8 faces

Answers

Answer 1
Answer:

The tetragonal crystal system below possesses two faces. The two axes are of equal length and are in the same plane, the main axis is either longer or shorter and all three intersect at right angles. The Crystal shapes include four-sided prisms and pyramids, hexacisochedron. 

Related Questions

Which of the following is not a colligative property of a solution?a. boiling point elevation b. density c. vapor pressure lowering d. freezing point depression
Ammonia and sulfuric acid react to form ammonium sulfate. Determine the starting mass of each reactant if 20.3 g of ammonium sulfate is produced and 5.89g of sulfuric acid remains unreacted.
Electronegativities of the elements Na, Al, P, and Cl follow a specific trend across the period. Based on this trend, an electron will be most strongly attracted toNa.Al.P.Cl.
Which compound is used to make asphalt?
Who wrote the banned book that Giordano Bruno read that gave him the idea that the Universe was infinite?

Convert 123 in scientific notation

Answers

✡ Answer: 1.23*10^2 ✡


- - Add a decimal at the end (to the right) and count till you get to the first number.
So now you have 1.23

- - Now you always want to times it by 10 to the power of how many times you moved it over, in this case, 2

Final answer: 1.23*10^2

✡Hope this helps✡
123= 1.23*10^2.

The coefficient should be >=1 and <10.

Hope this helps~

Chromium, calcium, and potassium are near each other on the periodic table and have some common characteristics but differ in chemical reactivity. Which lists these metals in order from most reactive to least reactive?calcium, chromium, potassium
chromium, calcium, potassium
potassium, calcium, chromium
potassium, chromium, calcium

Answers

Answer: The correct order is:

Potassium > calcium > chromium

Explanation:

Potassium belongs to the group of alkali metals with group number 1 in a periodic table. Potassium easily displaces hydrogen atom from the water molecule.

Where as calcium belongs to group (II) and easily displaces hydrogen atom from the water molecule.

In a reactivity series potassium is comes before the calcium metal which means that it is more reactive than calcium metal.

Potassium > calcium

Where as chromium metal is member of group 6 and chromium reacts with steam and acids to form hydroxides. But doesn't reacts with water(in liquid phase) which means it less reactive then potassium and calcium.

Potassium > calcium > chromium

potassium, calcium, chromium

What is the maximum amount of NaCl that can dissolve in 300 g of water? (the solubility of NaCl is 36.2 g/100 g H2O at 20 ⁰C.) please don't do the work.What chemistry equation do I have to use to solve this?

Answers

102g is the amount that can be dissolved   

Categorize each hydrocarbon as being saturated or unsaturated.

Answers

As you have not provided the options, still we can figure out the answer by understanding the key difference between saturated and unsaturated hydrocarbons.

SATURATED HYDROCARBONS are those hydrocarbons which only consist of a carbon carbon single bonds. All the bonds are sigma there are no pi bonds at all. Examples are shown below.

While, UNSATURATED HYDROCARBONS are those hydrocarbons which may contain either a double bond or triple bonds or both of them between the carbon atoms as shown below.

Final answer:

A saturated hydrocarbon has only single bonds, like methane (CH4), while an unsaturated hydrocarbon contains double or triple bonds, like ethene (C2H4).

Explanation:

To categorize a hydrocarbon as saturated or unsaturated, we need to look at the types of bonds it has. A saturated hydrocarbon, such as alkanes, has only single bonds between carbon atoms. For example, methane is a saturated hydrocarbon because it's formula, CH4, indicates only single bonds. On the other hand, an unsaturated hydrocarbon, such as alkenes and alkynes, contains double or triple bonds. An example of an unsaturated hydrocarbon is ethene (C2H4), an alkene which consists of a double bond between the two carbon atoms.

Learn more about Saturated and Unsaturated Hydrocarbons here:

brainly.com/question/33876217

#SPJ6

a mixture of oxygen, hydrogen, and nitrogen gases exerts a total pressure of 282 kpa. if the partial pressures of oxygen and hydrogen are 110 kpa and 106 kpa respectively, what is the partial pressure exerted by nitrogen?

Answers

Answer :  The partial pressure of N_2 is, 66 Kpa

Solution :

According to the Dalton's law, the total pressure of the gas is equal to the sum of the partial pressure of the mixture of gasses.

P_T=p_(N_2)+p_(O_2)+p_(H_2)

where,

P_T = total partial pressure = 282 Kpa

P_(N_2) = partial pressure of nitrogen = ?

P_(O_2) = partial pressure of oxygen = 110 Kpa

P_(H_2) = partial pressure of hydrogen = 106 Kpa

Now put all the given values is expression, we get the partial pressure of the nitrogen gas.

282Kpa=p_(N_2)+110Kpa+106Kpa

p_(N_2)=66Kpa

Therefore, the partial pressure of N_2 is, 66 Kpa
pressures oxygen and hydrogen +  pressure nitrogen

110 Kpa + 106 Kpa = 216 Kpa

Partial pressure:

total pressure -  exerted by nitrogen:

282 Kpa - 216 Kpa

= 66 Kpa

hope this helps!

In most aqueous reactions as temperature increases, the effectiveness of collisions between reacting particlesA. decreases
B. increases
C.remains the same

Answers

The reactions that occur in or in the presence of the water is called aqueous reactions. As the temperature increases, the collision of the particles also increases.

What kinetic energy and its relationship with temperature?

The increase of the temperature affects the collision rate of the particles which can be explained by the kinetic theory.  The increase in the temperature increases the collision of the particles.

The increased temperature increases the number of collisions and the kinetic energy that is enough to overcome the activation energy required by the particle to start the reaction.

Therefore, an increase in temperature option B. increases the particle collision.

Learn more about particle collision and kinetic theory here:

brainly.com/question/10209590
The more energy the more aqueous. Which can affect collision into increasing. Meaning B. increases :) 
Other Questions
Most metals are not?
The Great Migration during World War I refersto the movement of(1) factory workers from the Northeast to theSun Belt(2) communists deported to Russia asundesirable aliens(3) African Americans to northern cities to findwork(4) refugees fleeing from eastern Europe to theUnited States
Mendeleev is the scientist who first developed the atomic model the atomic theory elements the periodic table
What is the difference between an exothermic and an endothermic reaction?A. Endothermic reactions absorb heat. B. Exothermic reactions absorb heat. C. There are no changes in heat during either reaction. D. Endothermic reactions release heat.