CHEMISTRY HIGH SCHOOL

Place the terms compounds; mixtures, and elements in the proper sequence according to increasing complexity

Answers

Answer 1
Answer:

The basic form of matter is the atom. Atoms can be distinguished from each other and they are known as elements. When elements combined, they form compounds. The can either contain two or more elements. When you combined compounds of different types or classes, they form mixtures.

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Why are cells small?​

Answers

Because if a cell grows beyond a certain limit, not enough material will be able to cross the membrane fast enough to accommodate the increased cellular volume.
They are also small so they can maximize the ratio of surface area to volume. Smaller cells have a higher ratio which allows more molecules and ions move across the cell membrane per unit of cytoplasmic volume.

basically cells are small because they need to be able to get the nutrients in and waste out quickly.

Answer:

you know what i really dont know but imagine if they were huge

Explanation:

Which molecule would you expect to be more soluble in water, CH3CH2CH2OH or HOCH2CH2CH2OH? Explain.

Answers

Answer:

HOCH2CH2CH2OH.

Explanation:

HOCH2CH2CH2OH is more soluble in water than CH3CH2CH2OH because propandiol  have two alcoholic group attached to it hence, it can form more efficient hydrogen bonding with water whereas the hydrogen bonding in CH3CH2CH2OH  would be less prominent as it has only one alcoholic group.

Answer:

HOCH2CH2CH2OH

The true color of water isa. clear.
b. greenish blue.
c. sky blue.
d. green. E. white.

Answers

a. clear.
Water is transparent. 

The way in which an atom can bond with other atoms depends on the atoms?

Answers

Electrons, and Protons
                                                       I hope this helps :)

Define the following symbols that are encountered in rate equations: [A]0, t1/2 [A]t, k.

Answers

A rate equation can be written based on the rate constant k, concentration of reactants and half life time t1/2 of reactant if given. [A⁰] is the initial concentration of reactant A and  [A]t be the final concentration.

What is rate of reaction?

Rate of a reaction is the rate of decrease in concentration of reactants or rate of increase in concentration of products. Rate of the reaction written in terms of molar concentration of reactants is called the rate law.

Consider the simplest reaction A gives B. Here the only one reactant is A. The molar concentration of A is written as [A]. The rate constant k is then,

k = [B] / [A]

If any coefficients attached with them it is written as power of the concentration term. Now, the rate of the above reaction is written as follows:

rate r = k [A]

Sometimes the initial and final concentrations of A can be considered. Where, [A⁰] is the initial concentration and [A]t be the final concentration.

The half life t1/2 is the time taken to consume half of the reactants concentration.

To find more about rate law, refer the link below:

brainly.com/question/4222261

#SPJ2
[A]0= Initial concentration
t1/2= half life
[A]= final concentration
k= rate constant

If it takes 54 mL of 0.1 M NaOH to neutralize 125 mL of an HCl solution,what is the concentration of the HCl ?

Answers

volume of NaOH = 54 mL / 1000 = 0.054 L

Molarity NaOH = 0.1 M

Number of moles NaOH :

n = M * v

n = 0.1 * 0.054

n = 0.0054 moles of NaOH

Finally we calculate the number of moles of HCl in the solution from the stoichiometry of the reaction :

HCl + NaOH = NaCl + H₂O

1 mole HCl -------- 1 mole NaOH
? moles HCl ------- 0.0054 moles  NaOH

moles HCl = 0.0054 * 1 /1

= 0.0054 moles of HCl

Volume of HCl = 125 mL / 1000 = 0.125 L

M ( HCl ) = n / V

M = 0.0054 / 0.125

 = 0.0432 M

hope this helps!
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