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Lorico [155]
3 years ago
11

Why are scientific models important in the study of science?

Chemistry
1 answer:
telo118 [61]3 years ago
7 0

Answer:

In science, amodel is a representation of an idea, an object or even a process or a system that is used to describe and explain phenomena that cannot be experienced directly. Models are central to what scientists do, both in their research as well as when communicating their explanations.

Explanation:

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Which of the following is not equal to 0.0326 kilometers? 3.260 dkm 32.6 m 3260 cm 326000 mm
olya-2409 [2.1K]
326000 mm is incorrect as it is either the one in cm or mm. cm aligns with m so it must be mm
5 0
3 years ago
Read 2 more answers
What type of bond would be formed between hypothetical elements X and Y in the the compound XY based on their electronegativity
Mnenie [13.5K]

The bond is polar covalent because the difference in electronegativity is greater than 0.4, but  less than 1.7.

Electronegativity refers to the ability of an atom in a compound to attract the electrons of the bond towards itself. It is a periodic trend that increases across the period but decreases down the group.

The electronegativity difference between the two atoms as shown in the question is 1.55. This means that the bond is polar covalent because the difference in electronegativity is greater than 0.4, but  less than 1.7.

Learn more: brainly.com/question/2510654

5 0
2 years ago
How many moles of gas are contained in a 60.0L cylinder at a pressure of 200.0 atm and a temperature of 25.0? A.(490.48 mol) B.(
ExtremeBDS [4]

Answer: A. 490.48mol

Explanation:

Using the ideal gas equation; PV =nRT

where P = Presssure = 200 atm

          V = Volume = 60L

          n = Number of moles

          R = Gas constant = 0.08206 L.atm/mol/K

          T = Temperature = 25 °C  + 273 = 298K

Make "n" the subject of the formular;

n =  PV /  RT

   =  200   x    60   /    0.08206 x  298

   =  490.73  mol, which is closest to  option A. 490.48mol

5 0
3 years ago
A stretched spring has an elastic potential energy of 35 J when it is stretched 0.54 m. What is the spring constant of the sprin
Varvara68 [4.7K]

Answer:

240 N/m

Explanation:

Using the formula as follows:

U = ½kx²

Where;

U = elastic potential energy (J)

K = spring constant (N/m)

x = stretched displacement (m)

According to the information provided in this question,

U = 35J

x = 0.54m

k = ?

U = ½kx²

35 = ½ × k × 0.54²

35 = ½ × k × 0.2916

35 = 0.2916k/2

70 = 0.2916k

k = 70 ÷ 0.2916

k = 240.05

To 2s.f, the spring constant (k) = 240 N/m.

6 0
3 years ago
Which situation would violate the octet rule?
jolli1 [7]

Answer:

Explanation:

According to octet rule there should be 8 electrons in the atom's subshell/valence shell. Giving it the same electronic configuration as a noble gas.

among the options:

c) option is correct, as 5 bonds to carbon is violating the octet Rule, 5 bonds means 10 electrons exceeding the noble gas configuration and violets the octet rule.

All the other options are are incorrect, they are following

octet rule. Three bonds of carbon is possible in the case of carbocation.

6 0
3 years ago
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