CHEMISTRY HIGH SCHOOL

Which of the following pairs share the same empirical formula? Select one:
a. CH4 and C2H4
b. PbCl2 and PbCl4
c. N2O5 and NO2
d. C2H6 and C4H12

Answers

Answer 1
Answer:

Answer: The correct option is d.

Explanation: Empirical formula is a chemical formula which has the simplest ratio of elements present in a chemical compound.

From the given following pairs, the pair which shares the same empirical formula is C_2H_6\text{ and }C_4H_(12)

Empirical formula of C_2H_6 is CH_3 (by dividing the coefficients of C_2H_6 by 3)

Empirical formula of C_4H_(12) is CH_3 (by dividing the coefficients of C_4H_(12) by 3)

Both the chemical formulas have same empirical formula. Hence, the correct option is d.
Answer 2
Answer: C2H6 and C4H12 share the same emperical formula of CH3 as the both compounds can be reduced by the smallest subscript in each compound. So C2H6 will be reduced by 2 making CH3 and C4H12 can be reduced by 4 making CH3

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Is sodium element a metal nonmetal or metalloid

Answers

Sodium Na is a soft, low-density member of the alkali metal family. The element sodium is a very delicate silvery-white.

Sodium makes up 2.8 percent of the Earth's crust and is the most prevalent alkali metal and sixth most plentiful element on the planet.

A metal is a substance that has a shiny look when freshly processed, polished, or shattered, and conducts electricity and heat rather effectively. Typically, metals are malleable and ductile.

Ionic linkages mix metals with non-metals, whereas metallic connections happen between metal atoms. The metallic bonding joins metal atoms.

Learn more about metal, here:

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Sodium Na is a metal that belong to the alkali metal with low density and soft 

If the [H+] in a solution is 1*10^-1 mol/L, what is the [OH]?

Answers

K(w)=[OH⁻][H⁺]  (K(w)=1×10⁻¹⁴)

[OH⁻]=K(w)/[H⁺]
[OH⁻]=(1×10⁻¹⁴)/0.1
[OH⁻]=1×10⁻¹³M

I hope this helps.  Let me know if anything is unclear.

How many atoms of carbon are present in a molecule of :
Fructose and galactose

Answers

In Fructose, there are 4 carbon atoms. Fructose is a 5 atom molecule, and one of these is oxygen, therefore, the other 4 are carbon.
In Galactose, there are 6 carbon atoms.
Hope this helps :) 

Answer:

the answer is starch

Explanation: i chose fructose but got it wrong and showed that starch is correct

Why would a person could jump further on moon than on Jupiter?

Answers

In short, because the moon is smaller, its gravitational force is too. Therefore, if there is less gravity, it would be easier to jump further than on a bigger planet like Jupiter.

Explanation:
The Moon has less mass than the world, which implies it's less gravity than the world further.

Since the gravity is not propulsion on the U.S. as powerfully on the moon because it is on Earth, we are able to jump higher and with a lot of ease.
That's as a result of our muscles (and all alternative body elements concerned, like our bones and joints and heart and lungs) all were developed and conditioned to figure within the stronger gravity on the surface.
In short, because the moon is smaller, its gravitational force is too. Therefore, if there is less gravity, it would be easier to jump further than on a bigger planet like jupiter

What does sulfur supposedly smell like?

Answers