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baherus [9]
3 years ago
10

Question 4 (Mandatory) (3 points)

Chemistry
2 answers:
Andru [333]3 years ago
5 0
That would elements, elements are the most basic form
Molodets [167]3 years ago
3 0
It’s an element because elements are a form of pure substance.
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If an insufficient amount of liquid unknown had been used, how would this have effected the value of the experimental molar mass
Effectus [21]
<span>When the unknown liquid is heated and turned into vapor, it will not occupy the entire container. The volume in the molar mass (nRT)/PV will be greater than the actually volume of the unknown, and the calculated molar mass will be less than the actual molar mass.</span>
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4 years ago
Three grams of the same substance in different phases are stored in three different containers. Each container is barely large e
Marat540 [252]

Answer:

c.The atoms in the solid would be vibrating in position.

Explanation:

The properties of solid, liquid and gas which makes them different ares the intermolecular interactions between particles and the thermal energy.

Solids molecules are fixed in their position and may show vibrations.

Liquid molecules can move slowly as they have inter-molecular forces in between solid and gas,

Gas molecules can move vigorously here and there due very weak inter-molecular interactions and high thermal energy.

Thus the answer would be the atoms in the solid would be vibrating in position.

3 0
3 years ago
Read 2 more answers
Which of these is an example of a physical change?
vladimir2022 [97]

Answer:

Their isn't your examples but I will give you mine

Freezing, Evaporation and so on.

6 0
3 years ago
A marine biologist is preparing a deep-sea submersible for a dive. The sub stores breathing air under high pressure in a spheric
Luba_88 [7]

Complete Question

A marine biologist is preparing a deep-sea submersible for a dive. The sub stores breathing air under high pressure in a spherical air tank that measures 74.0 wide. The biologist estimates she will need 2600 L of air for the dive. Calculate the pressure to which this volume of air must be compressed in order to fit into the air tank. Write your answer in atmospheres. Round your answer to significant digits.

Answer:

The pressure required is P_2= 12.2 \ atm

Explanation:

Generally the volume of a sphere is mathematically denoted as

             V_s = \frac{4}{3} * \pi r^3

Substituting r =  \frac{d}{2} = \frac{74}{2} = 37cm

          V_s = \frac{4}{3} * 3.42 * (37)^2

               V_s = 2.121746 *10^5 cm^3

Converting to Liters

               V_s = \frac{2.121746 *10^5}{1000}

                V_s= 212.1746L

Assume that the pressure at which the air is given to the diver is 1 atm when the air was occupying a volume of 2600L

So

From Charles law

               P_1V_1 = P_2 V_s

Substituting  V_1 =2600 L ,   P_1 = 1 atm , V_s  =212.1746L , and making P_2 the subject we have

                 P_2 = \frac{P_1 * V_1}{V_s}

                     = \frac{1 * 2600}{212.1746}

                    P_2= 12.2 atm

               

6 0
3 years ago
How do you correctly put the number 0.00000000008759 in scientific notation with 3 sig figs?
vesna_86 [32]

Answer:

8.759×10-11

Explanation:

it may be to sure try to convert the answer

5 0
3 years ago
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