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Greeley [361]
3 years ago
14

Which of these compounds would you expect to have the lowest melting point?

Chemistry
1 answer:
Leya [2.2K]3 years ago
5 0

Answer:

Hmmm. #3

Explanation:

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Perform the following operationand express the answer inscientific notation.7.00x10^5 - 5.00x10^4
11Alexandr11 [23.1K]

Taking into account the scientific notation,  the result of the subtraction is 6.5×10⁵.

<h3>Scientific notation</h3>

First, remember that scientific notation is a quick way to represent a number using powers of base ten.

The numbers are written as a product:

a×10ⁿ

where:

  • a is a real number greater than or equal to 1 and less than 10, to which a decimal point is added after the first digit if it is a non-integer number.
  • n is an integer, which is called an exponent or an order of magnitude. Represents the number of times the comma is shifted. It is always an integer, positive if it is shifted to the left, negative if it is shifted to the right.
<h3 /><h3>Subtraction in scientific notation</h3>

You want to subtract two numbers in scientific notation. It should be noted that when the numbers to be added do not have the same base 10 exponent, the base 10 power with the highest exponent must be found. In this case, the highest exponent is 5.

Then all the values ​​are expressed as a function of the base 10 exponent with the highest exponent. In this case: 5.00×10⁴=0.500×10⁵

Taking the quantities to the same exponent, all you have to do is subtract what was previously called the number "a". In this case:

7.00×10⁵ - 0.500×10⁵= (7.00- 0.500)×10⁵= 6.5×10⁵

Finally, the result of the subtraction is 6.5×10⁵.

Learn more about scientific notation:

brainly.com/question/11403716

brainly.com/question/853571

#SPJ1

3 0
2 years ago
An inherited characteristic of an organism is called a ___________________.
Firlakuza [10]

Answer:

fitness. the ability of an organism to survive and reproduce in its environment. adaptation. the inherited characteristic that increases an organism's chance of survival.

5 0
3 years ago
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A 5.0 L sample of gas is collected at 400. mmHg at 727 C. What is the volume if the temperature were cooled to 77 C and the pres
saul85 [17]

Answer:

u will equate and make V2 the subject because it's the one u are looking for ....

5 0
3 years ago
How many grams of H2O would be produced if you started with 7 moles of ethylene (C2H4 )?
nydimaria [60]

Answer:

Explanation:

so if the reaction is C2H4+3O2-->2H2O+2CO2

if there were 7 moles of C2H4:

(see the attachment)

4 0
3 years ago
When one metal mixes into the crystalline lattice of another it is called a(n)
ikadub [295]

Answer:

it would be an alloy

Explanation:

 It is a type of substance that is made by the melting of two or more elements together.

3 0
3 years ago
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