How many moles are in 12.0 grams of O2

Arrange the following in order of size, from smallest to largest: polymer, monomer, carbon atom,

densk [106]

We can arrange the following entities from sizes smallest to largest in: 
1. Carbon atom. Consider the carbon atom in the periodic table which evidently small in size. Like any other atom such as hydrogen and oxygen. 
2. Monomer. Is a singular molecule that can combine itself with elongated chains and other molecules. And thus form,
3. Polymer. Polymers are made from a complex amalgamation of monomers.
4. Macromolecule. And thus the macromolecules from the word macro are the biggest component. Which forms the lipid, proteins, RNA enzymes in the cell.

8 0

3 years ago

(b) Which solution has a higher percent ionization of the acid, a 0.10M solution of HC2H3O2(aq) or a 0.010M solution of HC2H3O2(

boyakko [2]

Answer: The percent ionization is higher for 0.010 M solution of $HC_2H_3O_2$

Explanation:

$HC_2H_3O_2\rightarrow H^+C_2H_3O_2^-$

cM 0M 0M

$c-c\alpha$ $c\alpha$ $c\alpha$

So dissociation constant will be:

$K_a=\frac{(c\alpha)^{2}}{c-c\alpha}$

a) Given c= 0.10 M and $\alpha$ = ?

$K_a=1.8\times 10^{-5}$

Putting in the values we get:

$1.8\times 10^{-5}=\frac{(0.10\times \alpha)^2}{(0.10-0.10\times \alpha)}$

$(\alpha)=0.013$

$\%(\alpha)=0.013\times 100=1.3\%$

b) Given c= 0.010 M and $\alpha$ = ?

$K_a=1.8\times 10^{-5}$

Putting in the values we get:

$1.8\times 10^{-5}=\frac{(0.010\times \alpha)^2}{(0.010-0.010\times \alpha)}$

$(\alpha)=0.041$

$\%(\alpha)=0.041\times 100=4.1\%$

The percent ionization is higher for 0.010 M solution of $HC_2H_3O_2$

6 0

3 years ago

How many moles of AlCl3 are in 2.25L of a 0.15 molar solution?

Darya [45]

Answer:

Option C. 0.34 moles

Explanation:

Data obtained from the question include:

Molarity = 0.15M

Volume = 2.25L

Mole =

Molarity = mole /Volume

Mole = Molarity x Volume

Mole = 0.15 x 2.25

Mole = 0.34mole

The number of mole of AlCl3 present in the solution is 0.34mole.

5 0

3 years ago

DESCRIBE TROPICAL STORM; THUNDERSTORM; AND TORNADOES

Sergeu [11.5K]

Answer:

a tropical strom is when theres a lot of rain and it almost developed into a hurricane and a thunderstorm is rain with lightning and thunder but not that bad like a tropical storm and a tornado is when there is a huge gust of win that is formed in a circle like shape and could cause damage to homes

Explanation:

7 0

2 years ago

A sample of oxygen gas in one container has a volume of 20.0mililiter at 297 K and 101.3 kPa. The entire sample is transferred t

VashaNatasha [74]

Answer: $V_2=\frac{101.3kPa\times 20.0ml\times 283K}{297K\times 94.6kPa}$